技术领域technical field
本发明属于熔融纺丝领域，涉及一种聚合物纤维负压熔融纺丝成形方法。The invention belongs to the field of melt spinning and relates to a polymer fiber negative pressure melt spinning forming method.
背景技术Background technique
熔融纺丝是合成纤维中最高效的主导加工工艺，熔融纺丝理论是熔融纺丝科学与工程的研究核心。纤维从喷丝板微孔喷出到卷绕成形主要经历缓冷区、吹风区、自然冷却区。其中吹风区是保证纤维冷却过程的重要环节，包含了力场、温度场、速度场等。吹风区是纺丝过程中即纺丝动力学的研究，以及取向、结晶结构发展与演变机理的研究是纺丝理论研究的重要内容。目前吹风区主要形成了侧吹风、环吹风的冷却方式。纤维在吹风区的冷却效果直接关系到纤维品质指标。Melt spinning is the most efficient leading processing technology in synthetic fibers, and the theory of melt spinning is the core of melt spinning science and engineering research. The fibers are ejected from the spinneret micro-holes to coiled and formed mainly through slow cooling zone, blowing zone and natural cooling zone. Among them, the blowing area is an important link to ensure the fiber cooling process, including force field, temperature field, velocity field, etc. The blowing zone is the study of spinning kinetics during the spinning process, and the study of orientation, crystal structure development and evolution mechanism is an important content of spinning theory research. At present, the cooling mode of side blowing and ring blowing is mainly formed in the blowing area. The cooling effect of the fiber in the blowing area is directly related to the fiber quality index.
中国专利CN103952782A公开了一种长丝侧吹风装置及其吹风工艺。这种装置具有纺丝箱、上油装置和卷绕装置，纺丝箱底端设有喷丝板，喷丝板下方设有侧吹风装置，所述侧吹风装置包括冷风机，冷风机连接有送风管和整流风道，在送风管和整流风道之间设有过滤器和风量调节阀。侧吹风冷却的风速均匀，能够提高纺丝质量；设有侧吹风挡板，将侧吹风机的风向拦截且进行分解，使风的方向与丝束运动方向大体一致，减少了侧吹风机对丝束的干扰。Chinese patent CN103952782A discloses a filament side blowing device and blowing process thereof. This device has a spinning box, an oiling device and a winding device. A spinneret is provided at the bottom of the spinning box, and a side blowing device is provided below the spinneret. The side blowing device includes a cooling fan connected to a The air pipe and the rectifying air duct are provided with a filter and an air volume regulating valve between the air supply pipe and the rectifying air duct. The wind speed of the side blowing cooling is uniform, which can improve the spinning quality; there is a side blowing baffle, which intercepts and decomposes the wind direction of the side blower, so that the direction of the wind is generally consistent with the direction of the tow movement, reducing the impact of the side blower on the tow interference.
中国专利CN103820868B公开了一种生产超细旦、高品质纺丝的环吹风装置，包括纺丝箱体，纺丝箱体下方连接有环吹风箱，环吹风箱下方软连接有多孔整流板，多孔整流板下方设有风阀。环吹风风速均匀，通过实际生产试验，环吹风装置中加装多孔整流板后生产超细旦产品的AAA率由原来的88.3％上升到90.1％，产品的质量、尤其是超细旦产品的质量有了大幅度的提高。中国专利CN102199796B公开了一种可调式环吹风冷却系统，在环吹风装置的静压仓和风筒仓均装备高精度压力传感器，进风管处加装自动控制阀，整条生产线只由一台电脑控制，就能实现自动连锁调节风压，并设计环吹头可调节式环吹风装置，随时保证风筒仓风压和风量的稳定，最大的保证了产品质量。Chinese patent CN103820868B discloses a ring blowing device for producing ultra-fine denier and high-quality spinning, which includes a spinning box, a ring blowing box connected to the bottom of the spinning box, and a porous rectifying plate softly connected under the ring blowing box. An air valve is arranged under the rectifying plate. The wind speed of the ring blower is uniform. Through the actual production test, the AAA rate of the superfine denier products produced by the ring blower device increased from 88.3% to 90.1%. The quality of the products, especially the quality of the ultrafine denier products There has been a substantial improvement. Chinese patent CN102199796B discloses an adjustable ring blowing cooling system. Both the static pressure chamber and the air silo of the ring blowing device are equipped with high-precision pressure sensors, and an automatic control valve is installed at the air inlet pipe. The entire production line is controlled by only one computer. Control, can realize the automatic interlocking adjustment of wind pressure, and design the adjustable ring blowing device of the ring blowing head, to ensure the stability of the wind pressure and air volume of the wind silo at any time, and guarantee the product quality to the greatest extent.
然而，不管是侧吹风或是环吹风冷却方式都无法避免纤维气流形成的扰乱导致在冷却过程中发生冷却不充分、均匀。虽环吹风相比较侧吹风可以在一定程度上保证纤维的冷却效果，在超细旦、细旦纤维开发上品质指标得到提升，但对纤维冷却过程中纤维与空气边界层缺乏系统设计。能否突破现有的吹风冷却方式成为了熔融纺丝成形技术进一步发展的关键。However, neither the side blowing nor the surrounding blowing cooling method can avoid the disturbance of the fiber air flow, resulting in insufficient and uniform cooling during the cooling process. Although the surrounding air blowing can guarantee the cooling effect of the fiber to a certain extent compared with the side blowing, and the quality index has been improved in the development of ultrafine denier and fine denier fibers, but there is no systematic design for the fiber and air boundary layer during the fiber cooling process. Whether it can break through the existing blowing cooling method has become the key to the further development of melt spinning forming technology.
发明内容Contents of the invention
本发明的目的在于针对现有熔融纺丝成形冷却技术的不足，采用负压冷却替代传统的侧吹冷却和环吹冷却，实现初生纤维在恒温恒压封闭环境中充分、均匀冷却，同时减小冷却过程中空气阻力对纺丝速度的影响，提升纺丝加工速度和效率。The purpose of the present invention is to solve the deficiencies of existing melt spinning forming cooling technology, adopt negative pressure cooling instead of traditional side blowing cooling and ring blowing cooling, realize sufficient and uniform cooling of as-spun fibers in a constant temperature and constant pressure closed environment, and reduce The influence of air resistance on the spinning speed during the cooling process improves the spinning processing speed and efficiency.
为达到上述目的，本发明采用的技术方案为：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种聚合物纤维负压熔融纺丝成形方法，聚合物熔体从喷丝微孔挤出后首先经过缓冷形成初生纤维，然后初生纤维依次进行负压冷却和自然冷却；A polymer fiber negative pressure melt spinning forming method. After the polymer melt is extruded from the spinneret microhole, it is first slowly cooled to form nascent fibers, and then the nascent fibers are sequentially subjected to negative pressure cooling and natural cooling;
所述负压冷却是指在负压环境中冷却，所述负压环境是指压力为0.001～0.01MPa、温度为5～105℃的恒温恒压封闭环境，所述恒温恒压封闭环境内为空气气氛。The negative pressure cooling refers to cooling in a negative pressure environment. The negative pressure environment refers to a constant temperature and constant pressure closed environment with a pressure of 0.001 to 0.01 MPa and a temperature of 5 to 105°C. The constant temperature and constant pressure closed environment is air atmosphere.
作为优选的技术方案：As a preferred technical solution:
如上所述的一种聚合物纤维负压熔融纺丝成形方法，所述恒温恒压封闭环境的空间高度为1～2m。According to the above-mentioned negative pressure melt spinning forming method for polymer fibers, the space height of the constant temperature and constant pressure closed environment is 1-2m.
如上所述的一种聚合物纤维负压熔融纺丝成形方法，所述负压环境通过维持封闭环境中气氛的恒温恒压的装置实现，所述维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出；所述封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔。As mentioned above, a polymer fiber negative pressure melt spinning forming method, the negative pressure environment is realized by means of maintaining a constant temperature and constant pressure of the atmosphere in the closed environment, and the device for maintaining the constant temperature and constant pressure of the atmosphere in the closed environment includes Closed cavity, air inlet, air outlet and air pump, wherein the air inlet is located on both sides of the bottom of the closed cavity, the air outlet is located on the top of the closed cavity, the air flow is pumped in through the air pump, and enters the closed cavity from the air inlet Then it flows out from the air outlet; the closed cavity includes an upper sealing plate and a lower sealing plate, and the centers of the upper sealing plate and the lower sealing plate are respectively provided with through-holes for wire routing.
如上所述的一种聚合物纤维负压熔融纺丝成形方法，所述聚合物为聚酯或聚酰胺。According to the above-mentioned negative pressure melt spinning forming method for polymer fibers, the polymer is polyester or polyamide.
如上所述的一种聚合物纤维负压熔融纺丝成形方法，所述聚酯为PET(聚对苯二甲酸乙二醇酯)、PTT(聚对苯二甲酸丙二醇酯)或PBT(聚对苯二甲酸丁二醇酯)，所述聚酰胺为聚酰胺6、聚酰胺66、聚酰胺1010或聚酰胺56。A kind of polymer fiber negative pressure melt spinning forming method as mentioned above, described polyester is PET (polyethylene terephthalate), PTT (polytrimethylene terephthalate) or PBT (polyethylene terephthalate) Butylene phthalate), the polyamide is polyamide 6, polyamide 66, polyamide 1010 or polyamide 56.
如上所述的一种聚合物纤维负压熔融纺丝成形方法，所述喷丝微孔为圆孔和异形孔，所述异形孔为三角型、三叶型、中空型、扁平型、十字型、丰字型、“8”字型、“Y”型或“H”型微孔。A method for forming polymer fibers by negative pressure melt spinning as described above, the spinneret microholes are round holes and special-shaped holes, and the special-shaped holes are triangular, trilobal, hollow, flat, and cross-shaped , Feng font, "8" font, "Y" or "H" microporous.
如上所述的一种聚合物纤维负压熔融纺丝成形方法，所述缓冷是指在20～30℃的空气气氛中缓慢冷却，缓冷区域的空间高度为5～15cm。In the above-mentioned method for forming polymer fibers by negative pressure melt spinning, the slow cooling refers to slow cooling in an air atmosphere of 20-30° C., and the space height of the slow-cooling zone is 5-15 cm.
如上所述的一种聚合物纤维负压熔融纺丝成形方法，初生纤维经负压冷却和自然冷却后进行集束、上油和卷绕，具体纺丝工艺如下：A kind of polymer fiber negative pressure melt spinning forming method as described above, the as-spun fiber is bundled, oiled and wound after negative pressure cooling and natural cooling, and the specific spinning process is as follows:
聚酯POY丝：纺丝温度为270～300℃，纺丝速度为5000～10000m/min，集束点纤维的速度为4000～5000m/min，拉伸温度为60～80℃，总拉伸倍率为1.2～2.0，卷绕速度为5000～10000m/min；Polyester POY yarn: the spinning temperature is 270-300°C, the spinning speed is 5000-10000m/min, the speed of the fiber at the cluster point is 4000-5000m/min, the stretching temperature is 60-80°C, and the total draw ratio is 1.2～2.0, the winding speed is 5000～10000m/min;
聚酯DTY丝：聚酯POY丝经过8小时平衡后，分别经第一罗拉、第Ⅰ热箱、冷却板、PU盘式假捻器、第二罗拉、网络喷嘴、第Ⅱ热箱、第三罗拉和油轮，最后经过卷绕罗拉卷绕成型，制成聚酯DTY丝，其中第一罗拉的线速度为200～600m/min，第二罗拉的线速度为500～600m/min，第三罗拉的线速度为300～600m/min，卷绕罗拉的线速度为400～700m/min，牵伸比为1.1～1.8，PU盘式假捻D/Y比为1.2～2.5；Polyester DTY yarn: After 8 hours of balance, polyester POY yarn passes through the first roller, the first hot box, the cooling plate, the PU disc false twister, the second roller, the network nozzle, the second hot box, the third The rollers and tankers are finally wound and formed by winding rollers to make polyester DTY yarns. The linear speed of the first roller is 200-600m/min, the linear speed of the second roller is 500-600m/min, and the third roller The line speed is 300-600m/min, the line speed of the winding roller is 400-700m/min, the draft ratio is 1.1-1.8, and the D/Y ratio of PU disc false twist is 1.2-2.5;
聚酯HOY丝：纺丝温度为270～300℃，纺丝速度为15000～20000m/min，集束点纤维的速度为6000～8000m/min，卷绕速度为15000～20000m/min；Polyester HOY yarn: the spinning temperature is 270-300°C, the spinning speed is 15000-20000m/min, the fiber speed at the cluster point is 6000-8000m/min, and the winding speed is 15000-20000m/min;
聚酯FDY丝：纺丝温度为270～300℃，纺丝速度为12000～15000m/min，集束点纤维的速度为5000～7000m/min m/min，热辊GR1的速度为4000～6000m/min，温度为80～110℃，热辊GR2的速度为5000～7000m/min，温度为115～135℃，卷绕速度为12000～15000m/min；Polyester FDY yarn: the spinning temperature is 270-300°C, the spinning speed is 12000-15000m/min, the speed of the fiber at the converging point is 5000-7000m/min m/min, and the speed of the hot roller GR1 is 4000-6000m/min , the temperature is 80-110°C, the speed of the hot roller GR2 is 5000-7000m/min, the temperature is 115-135°C, and the winding speed is 12000-15000m/min;
聚酰胺纤维：纺丝温度为240～300℃，纺丝速度为8000～20000m/min，集束点纤维的速度为6000～8000m/min，拉伸温度为100～180℃，拉伸倍数为1.3～3.0，卷绕速度为8000～20000m/min。Polyamide fiber: the spinning temperature is 240-300°C, the spinning speed is 8000-20000m/min, the speed of the fiber at the aggregation point is 6000-8000m/min, the stretching temperature is 100-180°C, and the draw ratio is 1.3- 3.0, the winding speed is 8000-20000m/min.
传统熔融纺丝工艺过程中，纤维在缓冷区缓冷后再经吹风区进行充分冷却，吹风区的吹风包括了侧吹风与环吹风两种形式，侧吹风在过去相当长的时间内成为化纤冷却的主要方式，但是随着化纤朝着低纤度、异形等方向发展时，传统的侧吹风已经无法很好满足丝束的冷却成形，环吹风是侧吹风的进一步发展，尤其对开发高品质的细旦、异形纤维产品起到了关键的作用。但是传统的敞开式吹风冷却方式，是通过一定速度的吹风直接与纤维接触，通过加快空气流动，提高空气与纤维的热交换速度，增加热交换量，实现纤维的冷却，形象地描述成“电风扇”式冷却，敞开式吹风冷却过程中内外径分布的丝束所受到的风速与风温产生差异，导致冷却不均一，影响纤维的品质。总体来说，不管是侧吹风或是环吹风冷却方式都无法避免纤维气流形成的扰乱导致在冷却过程中发生冷却不充分、均匀。In the traditional melt spinning process, the fibers are cooled slowly in the slow cooling zone and then fully cooled by the blowing zone. The blowing in the blowing zone includes two forms of side blowing and surrounding blowing. Side blowing has become a chemical fiber for a long time in the past. The main way of cooling, but with the development of chemical fiber towards low denier, irregular shape, etc., the traditional side air blowing can no longer meet the cooling and forming of the tow, the ring air is a further development of the side blowing, especially for the development of high-quality Fine denier and profiled fiber products play a key role. However, the traditional open air blowing cooling method is to directly contact the fiber through the blowing at a certain speed. By accelerating the air flow, the heat exchange speed between the air and the fiber is increased, and the heat exchange amount is increased to realize the cooling of the fiber. It is vividly described as "electricity". "Fan" type cooling, during the open air blowing cooling process, the wind speed and wind temperature of the tow with inner and outer diameter distribution are different, resulting in uneven cooling and affecting the quality of the fiber. Generally speaking, neither the side blowing nor the surrounding blowing cooling method can avoid the disturbance of the fiber air flow, resulting in insufficient and uniform cooling during the cooling process.
本发明一种聚合物纤维负压熔融纺丝成形方法，聚酯熔体从喷丝微孔挤出后首先经过缓冷形成初生纤维，然后初生纤维依次进行负压冷却和自然冷却，负压冷却是在压力为0.001～0.01MPa、温度为5～105℃的恒温恒压封闭环境中进行的。本发明采用封闭式无气流扰动式负压冷却，完全区别于吹风冷却方式，通过一定温度气流对封闭腔体环境进行调控，封闭腔体环境与纤维之间进行热量交换，实现纤维的冷却，而不需要气流对纤维进行直接接触冷却，纤维可以形象比喻为“空调”式冷却。通过具有恒定压力和温度等特征的封闭腔体对纤维进行冷却，丝束全部处于相同的冷却环境下，均一性可以得到保证，克服了传统敞开式吹风冷却过程中由于纤维冷却不均一造成纤维品质下降的缺点。The invention discloses a polymer fiber negative pressure melt spinning forming method. After the polyester melt is extruded from the spinneret microholes, it is first slowly cooled to form nascent fibers, and then the nascent fibers are sequentially subjected to negative pressure cooling and natural cooling. It is carried out in a constant temperature and constant pressure closed environment with a pressure of 0.001-0.01MPa and a temperature of 5-105°C. The present invention adopts closed negative pressure cooling without air flow disturbance, which is completely different from the blowing cooling method. The closed cavity environment is regulated by a certain temperature air flow, and heat exchange is performed between the closed cavity environment and the fiber to realize the cooling of the fiber. There is no need for airflow to directly contact and cool the fibers, and the fibers can be compared to "air-conditioning" cooling. The fiber is cooled by a closed cavity with constant pressure and temperature, all the tows are in the same cooling environment, and the uniformity can be guaranteed, which overcomes the fiber quality caused by the uneven cooling of the fiber in the traditional open blowing cooling process Downsides.
此外，由于纤维冷却是在压力小于大气压的条件下进行的，纤维运动过程中受到的空气阻力降低明显，从而导致纤维加工速度显著提升，提高了生产加工的效率。In addition, since fiber cooling is carried out under the condition that the pressure is less than atmospheric pressure, the air resistance encountered during fiber movement is significantly reduced, which leads to a significant increase in fiber processing speed and improves the efficiency of production and processing.
有益效果：Beneficial effect:
1)本发明的聚合物纤维负压熔融纺丝成形方法，突破了现有的侧吹风或环吹风冷却方式，避免因为空气扰动对纤维成形过程的不利影响，实现纤维充分、均匀冷却，尤其适合细旦、超细旦纤维的成形加工。1) The polymer fiber negative pressure melt spinning forming method of the present invention breaks through the existing side blowing or surrounding blowing cooling methods, avoids the adverse effects of air turbulence on the fiber forming process, and realizes sufficient and uniform cooling of the fibers, especially suitable for Forming and processing of fine and ultrafine denier fibers.
2)本发明可以通过调节恒温恒压封闭环境中气流的温度调控纤维结晶速率和结晶过程，实现对纤维的力学性能的调控。2) The present invention can adjust the fiber crystallization rate and crystallization process by adjusting the temperature of the airflow in the constant temperature and constant pressure closed environment, so as to realize the regulation of the mechanical properties of the fiber.
3)本发明可以通过调节恒温恒压封闭环境的气压调控纺丝过程中纤维的阻力，实现对熔融纺丝速度的调控。3) The present invention can regulate the resistance of the fiber during the spinning process by adjusting the air pressure of the constant temperature and constant pressure closed environment, so as to realize the regulation and control of the melt spinning speed.
4)采用本发明的聚合物纤维负压熔融纺丝成形方法，实现了纤维的快速冷却，加快了纺丝成型加工的生产速度，提高了效率。4) By adopting the polymer fiber negative pressure melt spinning forming method of the present invention, the rapid cooling of the fiber is realized, the production speed of the spinning forming process is accelerated, and the efficiency is improved.
具体实施方式Detailed ways
下面结合具体实施方式，进一步阐述本发明。应理解，这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解，在阅读了本发明讲授的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。The present invention will be further described below in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
实施例1Example 1
一种PET POY丝负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为10000m/min的条件下将PET熔体细流从圆孔喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在20℃的空气气氛中缓慢冷却，缓冷区域的空间高度为5cm；A negative pressure melt spinning forming method for PET POY filaments. Firstly, under the condition of spinning temperature of 270°C and spinning speed of 10000m/min, the fine flow of PET melt is extruded from the circular orifice and then passed through the slow The primary fiber is formed by cold, slow cooling refers to slow cooling in an air atmosphere of 20°C, and the space height of the slow cooling area is 5cm;
然后初生纤维在压力为0.001MPa、温度为105℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.001MPa and a temperature of 105°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PET POY丝，集束点纤维的速度为5000m/min，拉伸温度为60℃，总拉伸倍率为2.0，卷绕速度为10000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PET POY yarns. The speed of the fibers at the clustering point is 5000m/min, the stretching temperature is 60°C, the total draw ratio is 2.0, and the winding speed is 10000m/min. min.
对比例1Comparative example 1
一种PET POY丝常压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为2500m/min的条件下将PET熔体细流从圆孔喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在20℃的空气气氛中缓慢冷却，缓冷区域的空间高度为5cm；然后采用环吹风对吹风冷却区的纤维进行冷却，吹风冷却区的空间高度为1m；最后自然冷却后进行集束、上油、拉伸和卷绕得到PET POY丝，集束点纤维的速度为1000m/min，拉伸温度为60℃，总拉伸倍率为2.0，卷绕速度为2500m/min。A method for PET POY filament melt spinning under normal pressure. Firstly, under the conditions of spinning temperature of 270°C and spinning speed of 2500m/min, the fine flow of PET melt is extruded from the circular orifice and then passed through the slow The primary fibers are formed by cold, and slow cooling refers to slow cooling in an air atmosphere of 20°C, and the space height of the slow cooling zone is 5cm; then, the fibers in the blowing cooling zone are cooled by ring blowing, and the space height of the blowing cooling zone is 1m; Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PET POY yarns. The speed of the fibers at the clustering point is 1000m/min, the stretching temperature is 60°C, the total draw ratio is 2.0, and the winding speed is 2500m/min. min.
将实施例1与对比例1对比可以看出，在保持其它工艺参数相同的条件下，采用负压冷却方式能够实现纺丝速度的显著提升，说明采用负压冷却比采用环吹风方式冷却更有利于高纺丝成型加工的生产速度，提高生产效率。Comparing Example 1 with Comparative Example 1, it can be seen that under the same conditions of keeping other process parameters, the negative pressure cooling method can be used to achieve a significant increase in spinning speed, which shows that the use of negative pressure cooling is more efficient than the cooling of the surrounding air blowing method. It is beneficial to the production speed of high spinning and forming processing, and improves the production efficiency.
实施例2Example 2
一种PTT POY丝负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为9000m/min的条件下将PTT熔体细流从三角型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在21℃的空气气氛中缓慢冷却，缓冷区域的空间高度为6cm；A PTT POY yarn negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 280°C and spinning speed of 9000m/min, the thin stream of PTT melt is extruded from the triangular spinneret micro-hole and then passed through the slow Cold formation of primary fibers, slow cooling refers to slow cooling in an air atmosphere of 21 °C, and the space height of the slow cooling area is 6cm;
然后初生纤维在压力为0.002MPa、温度为100℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.002MPa and a temperature of 100°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.1m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PTT POY丝，集束点纤维的速度为4500m/min，拉伸温度为65℃，总拉伸倍率为2.0，卷绕速度为9000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PTT POY yarns. The speed of the fibers at the clustering point is 4500m/min, the stretching temperature is 65°C, the total draw ratio is 2.0, and the winding speed is 9000m/min. min.
实施例3Example 3
一种PBT POY丝负压熔融纺丝成形方法，首先在纺丝温度为285℃，纺丝速度为8000m/min的条件下将PBT熔体细流从三叶型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在22℃的空气气氛中缓慢冷却，缓冷区域的空间高度为8cm；A negative pressure melt spinning forming method for PBT POY filaments. Firstly, under the conditions of spinning temperature of 285°C and spinning speed of 8000m/min, fine streams of PBT melt are extruded from three-lobed spinning micro-holes and passed through Slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 22°C, and the space height of the slow cooling area is 8cm;
然后初生纤维在压力为0.003MPa、温度为90℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.003MPa and a temperature of 90°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.2m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PBT POY丝，集束点纤维的速度为5000m/min，拉伸温度为70℃，总拉伸倍率为1.6，卷绕速度为8000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PBT POY filaments. The speed of the fibers at the clustering point is 5000m/min, the stretching temperature is 70°C, the total draw ratio is 1.6, and the winding speed is 8000m/min. min.
实施例4Example 4
一种PET POY丝负压熔融纺丝成形方法，首先在纺丝温度为290℃，纺丝速度为6000m/min的条件下将PET熔体细流从中空型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在23℃的空气气氛中缓慢冷却，缓冷区域的空间高度为9cm；A PET POY yarn negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 290°C and spinning speed of 6000m/min, the thin stream of PET melt is extruded from the hollow spinneret micro-hole and then passed through slow The primary fiber is formed by cold, and slow cooling refers to slow cooling in an air atmosphere of 23°C, and the space height of the slow cooling area is 9cm;
然后初生纤维在压力为0.005MPa、温度为80℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.3m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and pressure closed environment with a pressure of 0.005MPa and a temperature of 80°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.3m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PET POY丝，集束点纤维的速度为4200m/min，拉伸温度为75℃，总拉伸倍率为1.4，卷绕速度为6000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PET POY yarns. The speed of the fibers at the clustering point is 4200m/min, the stretching temperature is 75°C, the total draw ratio is 1.4, and the winding speed is 6000m/min. min.
实施例5Example 5
一种PBT POY丝负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为5000m/min的条件下将PBT熔体细流从扁平型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在24℃的空气气氛中缓慢冷却，缓冷区域的空间高度为10cm；A PBT POY yarn negative pressure melt spinning forming method, firstly, under the conditions of spinning temperature of 300°C and spinning speed of 5000m/min, a thin stream of PBT melt is extruded from flat spinneret microholes and then passed through a slow process. The primary fibers are formed by cold, slow cooling refers to slow cooling in an air atmosphere at 24°C, and the space height of the slow cooling area is 10cm;
然后初生纤维在压力为0.006MPa、温度为70℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.4m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.006MPa and a temperature of 70°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.4m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PBT POY丝，集束点纤维的速度为4000m/min，拉伸温度为80℃，总拉伸倍率为1.2，卷绕速度为5000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PBT POY filaments. The speed of the fibers at the clustering point is 4000m/min, the stretching temperature is 80°C, the total draw ratio is 1.2, and the winding speed is 5000m/min. min.
实施例6Example 6
一种PTT DTY丝负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为10000m/min的条件下将PTT熔体细流从十字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在25℃的空气气氛中缓慢冷却，缓冷区域的空间高度为11cm；A PTT DTY yarn negative pressure melt spinning forming method, firstly, under the conditions of spinning temperature of 270°C and spinning speed of 10000m/min, the thin stream of PTT melt is extruded from the cross-shaped spinneret microholes and then passed through slow The primary fibers are formed by cold, slow cooling refers to slow cooling in an air atmosphere of 25°C, and the space height of the slow cooling area is 11cm;
然后初生纤维在压力为0.007MPa、温度为60℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.5m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.007MPa and a temperature of 60°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.5m, the atmosphere in the constant temperature and constant pressure closed environment is air;
然后进行集束、上油、拉伸和卷绕得到PTT POY丝，集束点纤维的速度为5000m/min，拉伸温度为60℃，总拉伸倍率为2.0，卷绕速度为10000m/min；Then bunching, oiling, stretching and winding are carried out to obtain PTT POY filaments, the speed of the fibers at the bunching point is 5000m/min, the stretching temperature is 60°C, the total draw ratio is 2.0, and the winding speed is 10000m/min;
最后自然冷却后将PTT POY丝经过8小时平衡后，分别经第一罗拉、第Ⅰ热箱、冷却板、PU盘式假捻器、第二罗拉、网络喷嘴、第Ⅱ热箱、第三罗拉和油轮，最后经过卷绕罗拉卷绕成型，制成PTT DTY丝，其中第一罗拉的线速度为200m/min，第二罗拉的线速度为500m/min，第三罗拉的线速度为300m/min，卷绕罗拉的线速度为400m/min，牵伸比为1.1，PU盘式假捻D/Y比为1.2。Finally, after natural cooling, the PTT POY yarn is balanced for 8 hours, and then passed through the first roller, the first hot box, the cooling plate, the PU disc false twister, the second roller, the network nozzle, the second hot box, and the third roller And the oil tanker, finally winded by winding rollers to make PTT DTY yarn, wherein the linear speed of the first roller is 200m/min, the linear speed of the second roller is 500m/min, and the linear speed of the third roller is 300m/min min, the line speed of the winding roller is 400m/min, the draft ratio is 1.1, and the D/Y ratio of PU disc false twist is 1.2.
实施例7Example 7
一种PTT DTY丝负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为8000m/min的条件下将PTT熔体细流从丰字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在26℃的空气气氛中缓慢冷却，缓冷区域的空间高度为12cm；A PTT DTY yarn negative pressure melt spinning forming method, firstly, under the conditions of spinning temperature of 280°C and spinning speed of 8000m/min, the PTT melt fine stream is extruded from the Feng-shaped spinneret micro-holes and passed through Slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere of 26°C, and the space height of the slow cooling area is 12cm;
然后初生纤维在压力为0.008MPa、温度为50℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.6m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.008 MPa and a temperature of 50°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.6m, the atmosphere in the constant temperature and constant pressure closed environment is air;
然后进行集束、上油、拉伸和卷绕得到PTT POY丝，集束点纤维的速度为4800m/min，拉伸温度为65℃，总拉伸倍率为1.8，卷绕速度为8000m/min；Then bunching, oiling, stretching and winding are carried out to obtain PTT POY filaments. The speed of the fibers at the bunching point is 4800m/min, the stretching temperature is 65°C, the total draw ratio is 1.8, and the winding speed is 8000m/min;
最后自然冷却后将PTT POY丝经过8小时平衡后，分别经第一罗拉、第Ⅰ热箱、冷却板、PU盘式假捻器、第二罗拉、网络喷嘴、第Ⅱ热箱、第三罗拉和油轮，最后经过卷绕罗拉卷绕成型，制成PTT DTY丝，其中第一罗拉的线速度为300m/min，第二罗拉的线速度为520m/min，第三罗拉的线速度为400m/min，卷绕罗拉的线速度为500m/min，牵伸比为1.3，PU盘式假捻D/Y比为1.5。Finally, after natural cooling, the PTT POY yarn is balanced for 8 hours, and then passed through the first roller, the first hot box, the cooling plate, the PU disc false twister, the second roller, the network nozzle, the second hot box, and the third roller And the oil tanker, finally winded and formed by winding rollers to make PTT DTY yarn, the linear speed of the first roller is 300m/min, the linear speed of the second roller is 520m/min, and the linear speed of the third roller is 400m/min min, the line speed of the winding roller is 500m/min, the draft ratio is 1.3, and the D/Y ratio of PU disc false twist is 1.5.
实施例8Example 8
一种PBT DTY丝负压熔融纺丝成形方法，首先在纺丝温度为288℃，纺丝速度为7000m/min的条件下将PBT熔体细流从“8”字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在27℃的空气气氛中缓慢冷却，缓冷区域的空间高度为13cm；A negative pressure melt spinning forming method for PBT DTY filaments. Firstly, under the conditions of spinning temperature of 288°C and spinning speed of 7000m/min, fine streams of PBT melt are extruded from "8"-shaped spinneret micro-holes Afterwards, primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 27°C, and the space height of the slow cooling area is 13cm;
然后初生纤维在压力为0.009MPa、温度为30℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.8m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.009MPa and a temperature of 30°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.8m, the atmosphere in the constant temperature and constant pressure closed environment is air;
然后进行集束、上油、拉伸和卷绕得到PBT POY丝，集束点纤维的速度为4600m/min，拉伸温度为70℃，总拉伸倍率为1.5，卷绕速度为7000m/min；Then clustering, oiling, stretching and winding are carried out to obtain PBT POY filaments. The speed of the fibers at the clustering point is 4600m/min, the stretching temperature is 70°C, the total draw ratio is 1.5, and the winding speed is 7000m/min;
最后自然冷却后将PBT POY丝经过8小时平衡后，分别经第一罗拉、第Ⅰ热箱、冷却板、PU盘式假捻器、第二罗拉、网络喷嘴、第Ⅱ热箱、第三罗拉和油轮，最后经过卷绕罗拉卷绕成型，制成PBT DTY丝，其中第一罗拉的线速度为400m/min，第二罗拉的线速度为550m/min，第三罗拉的线速度为500m/min，卷绕罗拉的线速度为500m/min，牵伸比为1.5，PU盘式假捻D/Y比为1.8。Finally, after natural cooling, the PBT POY yarn is balanced for 8 hours, and then passed through the first roller, the first hot box, the cooling plate, the PU disc false twister, the second roller, the network nozzle, the second hot box, and the third roller And the oil tanker, and finally go through winding rollers to make PBT DTY yarn. The linear speed of the first roller is 400m/min, the linear speed of the second roller is 550m/min, and the linear speed of the third roller is 500m/min. min, the line speed of the winding roller is 500m/min, the draft ratio is 1.5, and the D/Y ratio of PU disc false twist is 1.8.
实施例9Example 9
一种PET DTY丝负压熔融纺丝成形方法，首先在纺丝温度为290℃，纺丝速度为6000m/min的条件下将PET熔体细流从“Y”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在28℃的空气气氛中缓慢冷却，缓冷区域的空间高度为14cm；A negative pressure melt spinning forming method for PET DTY filaments. Firstly, under the conditions of spinning temperature of 290°C and spinning speed of 6000m/min, the fine flow of PET melt is extruded from the "Y" type spinning micro-hole After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 28°C, and the space height of the slow cooling area is 14cm;
然后初生纤维在压力为0.01MPa、温度为20℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.9m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is cooled under negative pressure in a constant temperature and constant pressure closed environment with a pressure of 0.01MPa and a temperature of 20°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.9m, and the atmosphere in the constant temperature and constant pressure closed environment is air;
然后进行集束、上油、拉伸和卷绕得到PET POY丝，集束点纤维的速度为4500m/min，拉伸温度为75℃，总拉伸倍率为1.3，卷绕速度为6000m/min；Then bunching, oiling, stretching and winding are carried out to obtain PET POY filaments, the speed of the fibers at the bunching point is 4500m/min, the stretching temperature is 75°C, the total draw ratio is 1.3, and the winding speed is 6000m/min;
最后自然冷却后将PET POY丝经过8小时平衡后，分别经第一罗拉、第Ⅰ热箱、冷却板、PU盘式假捻器、第二罗拉、网络喷嘴、第Ⅱ热箱、第三罗拉和油轮，最后经过卷绕罗拉卷绕成型，制成PET DTY丝，其中第一罗拉的线速度为500m/min，第二罗拉的线速度为580m/min，第三罗拉的线速度为500m/min，卷绕罗拉的线速度为600m/min，牵伸比为1.6，PU盘式假捻D/Y比为2.0。Finally, after natural cooling, the PET POY yarn is balanced for 8 hours, and then passed through the first roller, the first hot box, the cooling plate, the PU disc false twister, the second roller, the network nozzle, the second hot box, and the third roller And the oil tanker, and finally wind and shape through winding rollers to make PET DTY yarns. The linear speed of the first roller is 500m/min, the linear speed of the second roller is 580m/min, and the linear speed of the third roller is 500m/min. min, the line speed of the winding roller is 600m/min, the draft ratio is 1.6, and the D/Y ratio of PU disc false twist is 2.0.
实施例10Example 10
一种PET DTY丝负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为5000m/min的条件下将PET熔体细流从“H”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在30℃的空气气氛中缓慢冷却，缓冷区域的空间高度为15cm；A negative pressure melt spinning forming method for PET DTY filaments. Firstly, under the condition of spinning temperature of 300°C and spinning speed of 5000m/min, the fine flow of PET melt is extruded from the "H" type spinning microhole The primary fibers are formed after slow cooling. Slow cooling refers to slow cooling in an air atmosphere of 30°C, and the space height of the slow cooling area is 15cm;
然后初生纤维在压力为0.01MPa、温度为5℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.01MPa and a temperature of 5°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and pressure of the atmosphere in the closed environment. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 2m, the atmosphere in the closed environment with constant temperature and pressure is air;
然后进行集束、上油、拉伸和卷绕得到PET POY丝，集束点纤维的速度为4000m/min，拉伸温度为80℃，总拉伸倍率为1.2，卷绕速度为5000m/min；Then bunching, oiling, stretching and winding are carried out to obtain PET POY filaments, the speed of the fibers at the bunching point is 4000m/min, the stretching temperature is 80°C, the total draw ratio is 1.2, and the winding speed is 5000m/min;
最后自然冷却后将PET POY丝经过8小时平衡后，分别经第一罗拉、第Ⅰ热箱、冷却板、PU盘式假捻器、第二罗拉、网络喷嘴、第Ⅱ热箱、第三罗拉和油轮，最后经过卷绕罗拉卷绕成型，制成PET DTY丝，其中第一罗拉的线速度为600m/min，第二罗拉的线速度为600m/min，第三罗拉的线速度为600m/min，卷绕罗拉的线速度为700m/min，牵伸比为1.8，PU盘式假捻D/Y比为2.5。Finally, after natural cooling, the PET POY yarn is balanced for 8 hours, and then passed through the first roller, the first hot box, the cooling plate, the PU disc false twister, the second roller, the network nozzle, the second hot box, and the third roller And the oil tanker, and finally winded and formed by winding rollers to make PET DTY yarn, wherein the linear speed of the first roller is 600m/min, the linear speed of the second roller is 600m/min, and the linear speed of the third roller is 600m/min min, the line speed of the winding roller is 700m/min, the draft ratio is 1.8, and the D/Y ratio of PU disc false twist is 2.5.
实施例11Example 11
一种PET HOY丝负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为20000m/min的条件下将PET熔体细流从圆孔喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在20℃的空气气氛中缓慢冷却，缓冷区域的空间高度为5cm；A negative pressure melt spinning forming method for PET HOY filaments. Firstly, under the conditions of spinning temperature of 270°C and spinning speed of 20000m/min, the fine flow of PET melt is extruded from the circular orifice and then passed through the slow The primary fiber is formed by cold, slow cooling refers to slow cooling in an air atmosphere of 20°C, and the space height of the slow cooling area is 5cm;
然后初生纤维在压力为0.001MPa、温度为105℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.001MPa and a temperature of 105°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油和卷绕得到PET HOY丝，集束点纤维的速度为8000m/min，卷绕速度为20000m/min。Finally, after natural cooling, clustering, oiling and winding are carried out to obtain PET HOY yarns. The speed of the fibers at the clustering point is 8000m/min, and the winding speed is 20000m/min.
实施例12Example 12
一种PET HOY丝负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为19000m/min的条件下将PET熔体细流从三角型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在21℃的空气气氛中缓慢冷却，缓冷区域的空间高度为6cm；A negative pressure melt spinning forming method for PET HOY filaments. Firstly, under the conditions of spinning temperature of 280°C and spinning speed of 19000m/min, the thin stream of PET melt is extruded from the triangular spinneret micro-holes and then passed through slow Cold formation of primary fibers, slow cooling refers to slow cooling in an air atmosphere of 21 °C, and the space height of the slow cooling area is 6cm;
然后初生纤维在压力为0.002MPa、温度为100℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.002MPa and a temperature of 100°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.1m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油和卷绕得到PET HOY丝，集束点纤维的速度为7000m/min，卷绕速度为19000m/min。Finally, after natural cooling, clustering, oiling and winding are carried out to obtain PET HOY yarns. The speed of the fibers at the clustering point is 7000m/min, and the winding speed is 19000m/min.
实施例13Example 13
一种PTT HOY丝负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为18000m/min的条件下将PTT熔体细流从三叶型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在22℃的空气气氛中缓慢冷却，缓冷区域的空间高度为8cm；A PTT HOY yarn negative pressure melt spinning forming method, firstly, under the conditions of spinning temperature of 280°C and spinning speed of 18000m/min, the fine flow of PTT melt is extruded from the three-lobed spinning micro-hole and then passed through Slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 22°C, and the space height of the slow cooling area is 8cm;
然后初生纤维在压力为0.003MPa、温度为90℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.003MPa and a temperature of 90°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.2m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油和卷绕得到PTT HOY丝，集束点纤维的速度为6500m/min，卷绕速度为18000m/min。Finally, after natural cooling, clustering, oiling and winding are carried out to obtain PTT HOY filaments. The speed of the fibers at the clustering point is 6500m/min, and the winding speed is 18000m/min.
实施例14Example 14
一种PBT HOY丝负压熔融纺丝成形方法，首先在纺丝温度为290℃，纺丝速度为16000m/min的条件下将PBT熔体细流从中空型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在23℃的空气气氛中缓慢冷却，缓冷区域的空间高度为10cm；A negative pressure melt spinning forming method for PBT HOY filaments. Firstly, under the conditions of spinning temperature of 290°C and spinning speed of 16000m/min, fine streams of PBT melt are extruded from hollow spinneret micro-holes and passed through slow The primary fiber is formed by cold, and slow cooling refers to slow cooling in an air atmosphere of 23°C, and the space height of the slow cooling area is 10cm;
然后初生纤维在压力为0.004MPa、温度为75℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.3m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.004MPa and a temperature of 75°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.3m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油和卷绕得到PBT HOY丝，集束点纤维的速度为6200m/min，卷绕速度为16000m/min。Finally, after natural cooling, clustering, oiling and winding are carried out to obtain PBT HOY filaments. The speed of the fibers at the clustering point is 6200m/min, and the winding speed is 16000m/min.
实施例15Example 15
一种PBT HOY丝负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为15000m/min的条件下将PBT熔体细流从扁平型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在24℃的空气气氛中缓慢冷却，缓冷区域的空间高度为10cm；A negative pressure melt spinning forming method for PBT HOY filaments. Firstly, under the conditions of spinning temperature of 300°C and spinning speed of 15000m/min, fine streams of PBT melt are extruded from flat spinneret micro-holes and passed through slow The primary fibers are formed by cold, slow cooling refers to slow cooling in an air atmosphere at 24°C, and the space height of the slow cooling area is 10cm;
然后初生纤维在压力为0.005MPa、温度为60℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.4m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.005MPa and a temperature of 60°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.4m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油和卷绕得到PBT HOY丝，集束点纤维的速度为6000m/min，卷绕速度为15000m/min。Finally, after natural cooling, clustering, oiling and winding are carried out to obtain PBT HOY filaments. The speed of the fibers at the clustering point is 6000m/min, and the winding speed is 15000m/min.
实施例16Example 16
一种PTT FDY丝负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为15000m/min的条件下将PTT熔体细流从十字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在25℃的空气气氛中缓慢冷却，缓冷区域的空间高度为11cm；A negative pressure melt spinning forming method for PTT FDY filaments. Firstly, under the conditions of spinning temperature of 270°C and spinning speed of 15000m/min, fine streams of PTT melt are extruded from cross-shaped spinneret micro-holes and then passed through slow The primary fibers are formed by cold, slow cooling refers to slow cooling in an air atmosphere of 25°C, and the space height of the slow cooling area is 11cm;
然后初生纤维在压力为0.006MPa、温度为50℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.5m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.006MPa and a temperature of 50°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.5m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PTT FDY丝，集束点纤维的速度为7000m/min，热辊GR1的速度为6000m/min，温度为80℃，热辊GR2的速度为7000m/min，温度为115℃，卷绕速度为15000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PTT FDY filaments. The speed of the fibers at the clustering point is 7000m/min, the speed of the hot roller GR1 is 6000m/min, the temperature is 80°C, and the speed of the hot roller GR2 The temperature is 7000m/min, the temperature is 115°C, and the winding speed is 15000m/min.
实施例17Example 17
一种PET FDY丝负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为14000m/min的条件下将PET熔体细流从丰字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在26℃的空气气氛中缓慢冷却，缓冷区域的空间高度为12cm；A negative pressure melt spinning forming method for PET FDY filaments. Firstly, under the conditions of spinning temperature of 280°C and spinning speed of 14000m/min, the fine flow of PET melt is extruded from the micro-holes of the Feng-shaped spinneret and passed through Slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere of 26°C, and the space height of the slow cooling area is 12cm;
然后初生纤维在压力为0.008MPa、温度为30℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.6m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.008MPa and a temperature of 30°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.6m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PET FDY丝，集束点纤维的速度为6500m/min，热辊GR1的速度为5000m/min，温度为90℃，热辊GR2的速度为6500m/min，温度为120℃，卷绕速度为14000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PET FDY yarns. The speed of the fibers at the clustering point is 6500m/min, the speed of the hot roller GR1 is 5000m/min, the temperature is 90°C, and the speed of the hot roller GR2 The temperature is 6500m/min, the temperature is 120°C, and the winding speed is 14000m/min.
实施例18Example 18
一种PBT FDY丝负压熔融纺丝成形方法，首先在纺丝温度为285℃，纺丝速度为13500m/min的条件下将PBT熔体细流从“8”字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在28℃的空气气氛中缓慢冷却，缓冷区域的空间高度为13cm；A negative pressure melt spinning forming method for PBT FDY filaments. Firstly, under the conditions of spinning temperature of 285°C and spinning speed of 13,500m/min, fine streams of PBT melt are extruded from "8"-shaped spinning micro-holes Afterwards, primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 28°C, and the space height of the slow cooling area is 13cm;
然后初生纤维在压力为0.008MPa、温度为20℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.8m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.008MPa and a temperature of 20°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.8m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PBT FDY丝，集束点纤维的速度为6000m/min，热辊GR1的速度为4500m/min，温度为100℃，热辊GR2的速度为6000m/min，温度为125℃，卷绕速度为13500m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PBT FDY filaments. The speed of the fibers at the cluster point is 6000m/min, the speed of the hot roller GR1 is 4500m/min, the temperature is 100°C, and the speed of the hot roller GR2 The temperature is 6000m/min, the temperature is 125°C, and the winding speed is 13500m/min.
实施例19Example 19
一种PTT FDY丝负压熔融纺丝成形方法，首先在纺丝温度为290℃，纺丝速度为13000m/min的条件下将PTT熔体细流从“Y”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在29℃的空气气氛中缓慢冷却，缓冷区域的空间高度为14cm；A PTT FDY yarn negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 290°C and spinning speed of 13000m/min, the fine flow of PTT melt is extruded from the "Y" type spinning microhole After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 29°C, and the space height of the slow cooling area is 14cm;
然后初生纤维在压力为0.009MPa、温度为10℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.9m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.009MPa and a temperature of 10°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.9m, and the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PTT FDY丝，集束点纤维的速度为5500m/min，热辊GR1的速度为4200m/min，温度为100℃，热辊GR2的速度为5500m/min，温度为130℃，卷绕速度为13000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PTT FDY filaments. The speed of the fibers at the clustering point is 5500m/min, the speed of the hot roller GR1 is 4200m/min, the temperature is 100°C, and the speed of the hot roller GR2 The temperature is 5500m/min, the temperature is 130°C, and the winding speed is 13000m/min.
实施例20Example 20
一种PET FDY丝负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为12000m/min的条件下将PET熔体细流从“H”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在30℃的空气气氛中缓慢冷却，缓冷区域的空间高度为15cm；A negative pressure melt spinning forming method for PET FDY filaments. Firstly, under the condition of spinning temperature of 300°C and spinning speed of 12000m/min, PET melt fine stream is extruded from "H" type spinning microholes The primary fibers are formed after slow cooling. Slow cooling refers to slow cooling in an air atmosphere of 30°C, and the space height of the slow cooling area is 15cm;
然后初生纤维在压力为0.01MPa、温度为5℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.01MPa and a temperature of 5°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and pressure of the atmosphere in the closed environment. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump, wherein the air inlet is located on the horizontal sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 2m, and the atmosphere in a closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕得到PET FDY丝，集束点纤维的速度为5000m/min，热辊GR1的速度为4000m/min，温度为110℃，热辊GR2的速度为5000m/min，温度为135℃，卷绕速度为12000m/min。Finally, after natural cooling, clustering, oiling, stretching and winding are carried out to obtain PET FDY yarns. The speed of the fibers at the clustering point is 5000m/min, the speed of the hot roller GR1 is 4000m/min, the temperature is 110°C, and the speed of the hot roller GR2 The temperature is 5000m/min, the temperature is 135°C, and the winding speed is 12000m/min.
实施例21Example 21
一种聚酰胺6纤维负压熔融纺丝成形方法，首先在纺丝温度为240℃，纺丝速度为20000m/min条件下将聚酰胺6熔体细流从圆孔喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在20℃的空气气氛中缓慢冷却，缓冷区域的空间高度为5cm；A polyamide 6 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 240°C and spinning speed of 20000m/min, the thin stream of polyamide 6 melt is extruded from the circular hole spinning micro-hole After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 20°C, and the space height of the slow cooling area is 5cm;
然后初生纤维在压力为0.001MPa、温度为105℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.001MPa and a temperature of 105°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为8000m/min，拉伸温度为120℃，拉伸倍数为2.5，卷绕速度为20000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 8000m/min, the stretching temperature is 120°C, the stretching ratio is 2.5, and the winding speed is 20000m/min.
实施例22Example 22
一种聚酰胺6纤维负压熔融纺丝成形方法，首先在纺丝温度为250℃，纺丝速度为15000m/min条件下将聚酰胺6熔体细流从三角型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在21℃的空气气氛中缓慢冷却，缓冷区域的空间高度为6cm；A polyamide 6 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 250°C and spinning speed of 15000m/min, fine streams of polyamide 6 melt are extruded from triangular spinneret micro-holes The primary fibers are formed after slow cooling. Slow cooling refers to slow cooling in an air atmosphere of 21°C, and the space height of the slow cooling area is 6cm;
然后初生纤维在压力为0.002MPa、温度为100℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.002MPa and a temperature of 100°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.1m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为7500m/min，拉伸温度为130℃，拉伸倍数为2.0，卷绕速度为15000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 7500m/min, the stretching temperature is 130°C, the draw ratio is 2.0, and the winding speed is 15000m/min.
实施例23Example 23
一种聚酰胺6纤维负压熔融纺丝成形方法，首先在纺丝温度为250℃，纺丝速度为12000m/min条件下将聚酰胺6熔体细流从三叶型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在22℃的空气气氛中缓慢冷却，缓冷区域的空间高度为8cm；A polyamide 6 fiber negative pressure melt spinning forming method. Firstly, under the conditions of spinning temperature of 250°C and spinning speed of 12000m/min, fine streams of polyamide 6 melt are extruded from the three-lobed spinning micro-holes Afterwards, primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 22°C, and the space height of the slow cooling area is 8cm;
然后初生纤维在压力为0.003MPa、温度为90℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.003MPa and a temperature of 90°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.2m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6400m/min，拉伸温度为140℃，拉伸倍数为1.9，卷绕速度为12000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6400m/min, the stretching temperature is 140°C, the draw ratio is 1.9, and the winding speed is 12000m/min.
实施例24Example 24
一种聚酰胺6纤维负压熔融纺丝成形方法，首先在纺丝温度为260℃，纺丝速度为10000m/min条件下将聚酰胺6熔体细流从中空型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在23℃的空气气氛中缓慢冷却，缓冷区域的空间高度为9cm；A polyamide 6 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 260°C and spinning speed of 10000m/min, fine streams of polyamide 6 melt are extruded from hollow spinneret micro-holes After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 23°C, and the space height of the slow cooling area is 9cm;
然后初生纤维在压力为0.005MPa、温度为80℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.3m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and pressure closed environment with a pressure of 0.005MPa and a temperature of 80°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.3m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6600m/min，拉伸温度为160℃，拉伸倍数为1.5，卷绕速度为10000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6600m/min, the stretching temperature is 160°C, the stretching ratio is 1.5, and the winding speed is 10000m/min.
实施例25Example 25
一种聚酰胺6纤维负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为8000m/min条件下将聚酰胺6熔体细流从扁平型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在24℃的空气气氛中缓慢冷却，缓冷区域的空间高度为10cm；A polyamide 6 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 270°C and spinning speed of 8000m/min, the thin stream of polyamide 6 melt is extruded from the flat spinneret micro-hole After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 24 ° C, and the space height of the slow cooling area is 10 cm;
然后初生纤维在压力为0.006MPa、温度为70℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.4m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.006MPa and a temperature of 70°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.4m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6000m/min，拉伸温度为180℃，拉伸倍数为1.3，卷绕速度为8000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6000m/min, the stretching temperature is 180°C, the stretching ratio is 1.3, and the winding speed is 8000m/min.
实施例26Example 26
一种聚酰胺66纤维负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为20000m/min的条件下将聚酰胺66熔体细流从十字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在25℃的空气气氛中缓慢冷却，缓冷区域的空间高度为11cm；A polyamide 66 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 270°C and spinning speed of 20000m/min, fine streams of polyamide 66 melt are extruded from cross-shaped spinning micro-holes Afterwards, primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 25°C, and the space height of the slow cooling area is 11cm;
然后初生纤维在压力为0.007MPa、温度为60℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.5m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.007MPa and a temperature of 60°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.5m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为8000m/min，拉伸温度为120℃，拉伸倍数为2.5，卷绕速度为20000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 8000m/min, the stretching temperature is 120°C, the stretching ratio is 2.5, and the winding speed is 20000m/min.
实施例27Example 27
一种聚酰胺66纤维负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为15000m/min的条件下将聚酰胺66熔体细流从丰字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在26℃的空气气氛中缓慢冷却，缓冷区域的空间高度为12cm；A polyamide 66 fiber negative pressure melt spinning forming method. Firstly, under the condition of spinning temperature of 280°C and spinning speed of 15000m/min, the thin stream of polyamide 66 melt is extruded from the micro-holes of the Feng-shaped spinneret. After being released, the primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 26°C, and the space height of the slow cooling area is 12cm;
然后初生纤维在压力为0.008MPa、温度为50℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.6m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.008 MPa and a temperature of 50°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.6m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为7500m/min，拉伸温度为140℃，拉伸倍数为2.0，卷绕速度为15000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 7500m/min, the stretching temperature is 140°C, the draw ratio is 2.0, and the winding speed is 15000m/min.
实施例28Example 28
一种聚酰胺66纤维负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为12000m/min的条件下将聚酰胺66熔体细流从“8”字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在27℃的空气气氛中缓慢冷却，缓冷区域的空间高度为13cm；A polyamide 66 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 280°C and spinning speed of 12000m/min, the fine flow of polyamide 66 melt is passed from the "8" shape spinning micro After the hole is extruded, it is slowly cooled to form primary fibers. Slow cooling refers to slow cooling in an air atmosphere at 27°C. The space height of the slow cooling area is 13cm;
然后初生纤维在压力为0.009MPa、温度为30℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.8m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.009MPa and a temperature of 30°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.8m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6400m/min，拉伸温度为150℃，拉伸倍数为1.9，卷绕速度为12000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6400m/min, the stretching temperature is 150°C, the draw ratio is 1.9, and the winding speed is 12000m/min.
实施例29Example 29
一种聚酰胺66纤维负压熔融纺丝成形方法，首先在纺丝温度为290℃，纺丝速度为10000m/min的条件下将聚酰胺66熔体细流从“Y”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在28℃的空气气氛中缓慢冷却，缓冷区域的空间高度为14cm；A polyamide 66 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 290°C and spinning speed of 10000m/min, the fine flow of polyamide 66 melt is passed through the "Y" type spinning microhole After extrusion, it is slowly cooled to form primary fibers. Slow cooling refers to slow cooling in an air atmosphere at 28°C. The space height of the slow cooling area is 14cm;
然后初生纤维在压力为0.01MPa、温度为20℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.9m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is cooled under negative pressure in a constant temperature and constant pressure closed environment with a pressure of 0.01MPa and a temperature of 20°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.9m, and the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6600m/min，拉伸温度为160℃，拉伸倍数为1.5，卷绕速度为10000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6600m/min, the stretching temperature is 160°C, the stretching ratio is 1.5, and the winding speed is 10000m/min.
实施例30Example 30
一种聚酰胺66纤维负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为8000m/min的条件下将聚酰胺66熔体细流从“H”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在30℃的空气气氛中缓慢冷却，缓冷区域的空间高度为15cm；A polyamide 66 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 300°C and spinning speed of 8000m/min, the thin stream of polyamide 66 melt is passed through the "H" type spinning micropore After extrusion, it is slowly cooled to form nascent fibers. Slow cooling refers to slow cooling in an air atmosphere of 30°C, and the space height of the slow cooling area is 15cm;
然后初生纤维在压力为0.01MPa、温度为5℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.01MPa and a temperature of 5°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and pressure of the atmosphere in the closed environment. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 2m, the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6000m/min，拉伸温度为180℃，拉伸倍数为1.3，卷绕速度为8000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6000m/min, the stretching temperature is 180°C, the stretching ratio is 1.3, and the winding speed is 8000m/min.
实施例31Example 31
一种聚酰胺1010纤维负压熔融纺丝成形方法，首先在纺丝温度为270℃，纺丝速度为20000m/min的条件下聚酰胺1010熔体细流从圆孔喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在20℃的空气气氛中缓慢冷却，缓冷区域的空间高度为5cm；A polyamide 1010 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 270°C and spinning speed of 20000m/min, polyamide 1010 melt fine stream is extruded from the circular hole spinning micro-hole After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 20°C, and the space height of the slow cooling area is 5cm;
然后初生纤维在压力为0.001MPa、温度为105℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.001MPa and a temperature of 105°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为8000m/min，拉伸温度为100℃，拉伸倍数为3.0，卷绕速度为20000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 8000m/min, the stretching temperature is 100°C, the stretching ratio is 3.0, and the winding speed is 20000m/min.
实施例32Example 32
一种聚酰胺1010纤维负压熔融纺丝成形方法，首先在纺丝温度为280℃，纺丝速度为15000m/min的条件下聚酰胺1010熔体细流从三角型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在21℃的空气气氛中缓慢冷却，缓冷区域的空间高度为6cm；A polyamide 1010 fiber negative pressure melt spinning forming method, firstly, under the conditions of spinning temperature of 280°C and spinning speed of 15000m/min, polyamide 1010 melt fine stream is extruded from triangular spinneret micro-holes The primary fibers are formed after slow cooling. Slow cooling refers to slow cooling in an air atmosphere of 21°C, and the space height of the slow cooling area is 6cm;
然后初生纤维在压力为0.002MPa、温度为100℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.1m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.002MPa and a temperature of 100°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.1m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为7500m/min，拉伸温度为120℃，拉伸倍数为2.2，卷绕速度为15000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 7500m/min, the stretching temperature is 120°C, the draw ratio is 2.2, and the winding speed is 15000m/min.
实施例33Example 33
一种聚酰胺1010纤维负压熔融纺丝成形方法，首先在纺丝温度为290℃，纺丝速度为12000m/min的条件下聚酰胺1010熔体细流从三叶型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在22℃的空气气氛中缓慢冷却，缓冷区域的空间高度为8cm；A polyamide 1010 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 290°C and spinning speed of 12000m/min, polyamide 1010 melt fine stream is extruded from the three-lobed spinning micro-hole Afterwards, primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 22°C, and the space height of the slow cooling area is 8cm;
然后初生纤维在压力为0.003MPa、温度为90℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.003MPa and a temperature of 90°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and constant pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.2m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6400m/min，拉伸温度为140℃，拉伸倍数为2.0，卷绕速度为12000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6400m/min, the stretching temperature is 140°C, the draw ratio is 2.0, and the winding speed is 12000m/min.
实施例34Example 34
一种聚酰胺1010纤维负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为10000m/min的条件下聚酰胺1010熔体细流从中空型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在23℃的空气气氛中缓慢冷却，缓冷区域的空间高度为10cm；A polyamide 1010 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 300°C and spinning speed of 10000m/min, polyamide 1010 melt fine stream is extruded from hollow spinneret micro-holes After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 23°C, and the space height of the slow cooling area is 10cm;
然后初生纤维在压力为0.004MPa、温度为75℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.3m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.004MPa and a temperature of 75°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.3m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6600m/min，拉伸温度为150℃，拉伸倍数为1.8，卷绕速度为10000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6600m/min, the stretching temperature is 150°C, the draw ratio is 1.8, and the winding speed is 10000m/min.
实施例35Example 35
一种聚酰胺1010纤维负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为8000m/min的条件下聚酰胺1010熔体细流从扁平型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在24℃的空气气氛中缓慢冷却，缓冷区域的空间高度为10cm；A polyamide 1010 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 300°C and spinning speed of 8000m/min, polyamide 1010 melt fine stream is extruded from flat spinneret micro-holes After slow cooling to form primary fibers, slow cooling refers to slow cooling in an air atmosphere at 24 ° C, and the space height of the slow cooling area is 10 cm;
然后初生纤维在压力为0.005MPa、温度为60℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.4m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.005MPa and a temperature of 60°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.4m, and the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6000m/min，拉伸温度为160℃，拉伸倍数为1.5，卷绕速度为8000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6000m/min, the stretching temperature is 160°C, the stretching ratio is 1.5, and the winding speed is 8000m/min.
实施例36Example 36
一种聚酰胺56纤维负压熔融纺丝成形方法，首先在纺丝温度为265℃，纺丝速度为20000m/min的条件下将聚酰胺56熔体细流从十字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在25℃的空气气氛中缓慢冷却，缓冷区域的空间高度为11cm；A polyamide 56 fiber negative pressure melt spinning forming method. Firstly, under the conditions of spinning temperature of 265°C and spinning speed of 20000m/min, fine streams of polyamide 56 melt are extruded from cross-shaped spinning micro-holes Afterwards, primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 25°C, and the space height of the slow cooling area is 11cm;
然后初生纤维在压力为0.006MPa、温度为50℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.5m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.006MPa and a temperature of 50°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and pressure of the atmosphere in the closed environment, and the atmosphere in the closed environment is maintained. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.5m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为8000m/min，拉伸温度为120℃，拉伸倍数为2.5，卷绕速度为20000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 8000m/min, the stretching temperature is 120°C, the stretching ratio is 2.5, and the winding speed is 20000m/min.
实施例37Example 37
一种聚酰胺56纤维负压熔融纺丝成形方法，首先在纺丝温度为275℃，纺丝速度为18000m/min的条件下将聚酰胺56熔体细流从丰字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在26℃的空气气氛中缓慢冷却，缓冷区域的空间高度为12cm；A polyamide 56 fiber negative pressure melt spinning forming method. Firstly, under the conditions of spinning temperature of 275°C and spinning speed of 18000m/min, the fine flow of polyamide 56 melt is extruded from the micro-holes of the Feng-shaped spinneret. After being released, the primary fibers are formed through slow cooling. Slow cooling refers to slow cooling in an air atmosphere at 26°C, and the space height of the slow cooling area is 12cm;
然后初生纤维在压力为0.008MPa、温度为30℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.6m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.008MPa and a temperature of 30°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.6m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为7500m/min，拉伸温度为130℃，拉伸倍数为2.0，卷绕速度为18000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 7500m/min, the stretching temperature is 130°C, the draw ratio is 2.0, and the winding speed is 18000m/min.
实施例38Example 38
一种聚酰胺56纤维负压熔融纺丝成形方法，首先在纺丝温度为285℃，纺丝速度为14000m/min的条件下将聚酰胺56熔体细流从“8”字型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在28℃的空气气氛中缓慢冷却，缓冷区域的空间高度为13cm；A polyamide 56 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 285°C and spinning speed of 14000m/min, the fine stream of polyamide 56 melt is sprayed from the "8"-shaped spinning micro After the hole is extruded, it is slowly cooled to form primary fibers. Slow cooling refers to slow cooling in an air atmosphere at 28°C. The space height of the slow cooling area is 13cm;
然后初生纤维在压力为0.008MPa、温度为20℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.8m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.008MPa and a temperature of 20°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 1.8m, the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为7000m/min，拉伸温度为150℃，拉伸倍数为1.8，卷绕速度为14000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 7000m/min, the stretching temperature is 150°C, the draw ratio is 1.8, and the winding speed is 14000m/min.
实施例39Example 39
一种聚酰胺56纤维负压熔融纺丝成形方法，首先在纺丝温度为295℃，纺丝速度为10000m/min的条件下将聚酰胺56熔体细流从“Y”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在29℃的空气气氛中缓慢冷却，缓冷区域的空间高度为14cm；A polyamide 56 fiber negative pressure melt spinning forming method, firstly, under the condition of spinning temperature of 295°C and spinning speed of 10000m/min, the fine flow of polyamide 56 melt is passed through the "Y" type spinning micropore After extrusion, it is slowly cooled to form primary fibers. Slow cooling refers to slow cooling in an air atmosphere at 29°C. The space height of the slow cooling zone is 14cm;
然后初生纤维在压力为0.009MPa、温度为10℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为1.9m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fiber is subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.009MPa and a temperature of 10°C. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is is 1.9m, and the atmosphere in the constant temperature and constant pressure closed environment is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6500m/min，拉伸温度为160℃，拉伸倍数为1.5，卷绕速度为10000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6500m/min, the stretching temperature is 160°C, the stretching ratio is 1.5, and the winding speed is 10000m/min.
实施例40Example 40
一种聚酰胺56纤维负压熔融纺丝成形方法，首先在纺丝温度为300℃，纺丝速度为8000m/min的条件下将聚酰胺56熔体细流从“H”型喷丝微孔挤出后经过缓冷形成初生纤维，缓冷是指在30℃的空气气氛中缓慢冷却，缓冷区域的空间高度为15cm；A polyamide 56 fiber negative pressure melt spinning forming method, firstly, under the conditions of spinning temperature of 300°C and spinning speed of 8000m/min, the fine flow of polyamide 56 melt is passed through the "H" type spinning microhole After extrusion, it is slowly cooled to form nascent fibers. Slow cooling refers to slow cooling in an air atmosphere of 30°C, and the space height of the slow cooling area is 15cm;
然后初生纤维在压力为0.01MPa、温度为5℃的恒温恒压封闭环境中进行负压冷却，负压冷却的环境通过维持封闭环境中气氛的恒温恒压的装置实现，维持封闭环境中气氛的恒温恒压的装置包括封闭腔体、进气口、出气口和气泵，其中进气口位于封闭腔体底部的水平两侧，出气口位于封闭腔体的顶部，气流经由气泵泵入，从进气口进入封闭腔体后从出气口流出，封闭腔体包括上封板和下封板，上封板和下封板的中心处分别开有走丝通孔，恒温恒压封闭环境的空间高度为2m，恒温恒压封闭环境中的气氛为空气；Then the as-spun fibers are subjected to negative pressure cooling in a constant temperature and constant pressure closed environment with a pressure of 0.01MPa and a temperature of 5°C. The negative pressure cooling environment is realized by a device that maintains the constant temperature and pressure of the atmosphere in the closed environment. The constant temperature and pressure device includes a closed cavity, an air inlet, an air outlet and an air pump. The air inlet is located on both sides of the bottom of the closed cavity, and the air outlet is located on the top of the closed cavity. The air port enters the closed cavity and flows out from the air outlet. The closed cavity includes an upper sealing plate and a lower sealing plate. There are wire holes in the center of the upper sealing plate and the lower sealing plate respectively. The space height of the constant temperature and constant pressure closed environment is 2m, the atmosphere in the closed environment with constant temperature and pressure is air;
最后自然冷却后进行集束、上油、拉伸和卷绕，集束点纤维的速度为6000m/min，拉伸温度为180℃，拉伸倍数为1.3，卷绕速度为8000m/min。Finally, clustering, oiling, stretching and winding are carried out after natural cooling. The speed of the fibers at the clustering point is 6000m/min, the stretching temperature is 180°C, the stretching ratio is 1.3, and the winding speed is 8000m/min.
| Application Number | Priority Date | Filing Date | Title |
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| CN201611004295.5ACN106435784B (en) | 2016-11-15 | 2016-11-15 | A kind of polymer fiber negative pressure melt spinning manufacturing process |
| PCT/CN2016/106594WO2018090369A1 (en) | 2016-11-15 | 2016-11-21 | Method for forming polymer fiber by melt spinning under negative pressure |
| Application Number | Priority Date | Filing Date | Title |
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| CN201611004295.5ACN106435784B (en) | 2016-11-15 | 2016-11-15 | A kind of polymer fiber negative pressure melt spinning manufacturing process |
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| CN201611004295.5AActiveCN106435784B (en) | 2016-11-15 | 2016-11-15 | A kind of polymer fiber negative pressure melt spinning manufacturing process |
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