CN113375996B - A kind of pitch-based carbon fiber multifilament tensile property sample preparation device and sample preparation method - Google Patents

Abstract

Translated fromChinese

本发明涉及一种沥青基碳纤维复丝拉伸性能制样装置及制样方法，包括至少两根直径＞50mm四氟外管（1）和纤维复丝（6），两根所述四氟外管（1）平行设置，两根所述四氟外管（1）之间通过T型支架（3）进行连接，所述纤维复丝（6）的一端通过一耐热胶带（7）固定在一根四氟外管（1）上，所述纤维复丝（6）的另一端通过另一耐热胶带（7）固定在另一根四氟外管（1）上，固定后的所述纤维复丝（6）依次进行浸胶和加热固化处理。

The invention relates to a sample preparation device and a sample preparation method for the tensile properties of pitch-based carbon fiber multifilaments, comprising at least two PTFE outer tubes (1) with a diameter of >50 mm and fiber multifilaments (6), two of the tetrafluoro outer tubes (6). The tubes (1) are arranged in parallel, the two tetrafluoro outer tubes (1) are connected by a T-shaped bracket (3), and one end of the fiber multifilament (6) is fixed on a heat-resistant tape (7). On a PTFE outer tube (1), the other end of the fiber multifilament (6) is fixed on another PTFE outer tube (1) through another heat-resistant tape (7), and the fixed The fiber multifilaments (6) are sequentially subjected to dipping and heat curing treatment.

Description

Translated fromChinese

一种沥青基碳纤维复丝拉伸性能制样装置及制样方法A kind of pitch-based carbon fiber multifilament tensile property sample preparation device and sample preparation method

技术领域technical field

本发明涉及一种沥青基碳纤维复丝拉伸性能制样装置及制样方法。The invention relates to a sample preparation device and a sample preparation method for the tensile properties of a pitch-based carbon fiber multifilament.

背景技术Background technique

沥青基碳纤维近些年发展很快，但是由于沥青基碳纤维的模量超高、断裂伸长率非常低，通常小于0.3%，所以沥青基碳纤维韧性很差，因此沥青基碳纤维复丝在按国标GB/T3362—2017制样过程中很容易产生断丝，制样成功率较低。Pitch-based carbon fiber has developed rapidly in recent years, but due to its ultra-high modulus and very low elongation at break, usually less than 0.3%, pitch-based carbon fiber has poor toughness. Therefore, pitch-based carbon fiber multifilament is in accordance with the national standard. During the preparation of GB/T3362-2017, it is easy to produce broken wires, and the success rate of sample preparation is low.

除此之外，现行碳纤维复丝拉伸性能测试标准GB/T 3362—2017是延续1982年和2005年的测试标准，因此其中制样细节是侧重于聚丙烯腈碳纤维的，用于沥青基碳纤维复丝会有些缺陷。In addition, the current carbon fiber multifilament tensile performance test standard GB/T 3362-2017 is a continuation of the test standard in 1982 and 2005, so the sample preparation details are focused on polyacrylonitrile carbon fiber, which is used for pitch-based carbon fiber Multifilaments will have some defects.

发明内容SUMMARY OF THE INVENTION

本发明设计了一种沥青基碳纤维复丝拉伸性能制样装置及制样方法，其解决的技术问题是沥青基碳纤维韧性很差，因此沥青基碳纤维复丝在按国标GB/T 3362—2017制样过程中很容易产生断丝，制样成功率较低。The invention designs a sample preparation device and a sample preparation method for the tensile properties of pitch-based carbon fiber multifilaments. The technical problem to be solved is that the pitch-based carbon fiber has poor toughness. Therefore, the pitch-based carbon fiber multifilaments are in accordance with the national standard GB/T 3362-2017 During the sample preparation process, it is easy to produce broken wires, and the success rate of sample preparation is low.

为了解决上述存在的技术问题，本发明采用了以下方案：In order to solve the above-mentioned technical problem, the present invention adopts the following scheme:

一种沥青基碳纤维复丝拉伸性能制样装置，其特征在于：包括至少两根直径＞50mm四氟外管（1）和纤维复丝（6），两根所述四氟外管（1）平行设置，两根所述四氟外管（1）之间通过T型支架（3）进行连接，所述纤维复丝（6）的一端通过一耐热胶带（7）固定在一根四氟外管（1）上，所述纤维复丝（6）的另一端通过另一耐热胶带（7）固定在另一根四氟外管（1）上，固定后的所述纤维复丝（6）依次进行浸胶和加热固化处理。A device for preparing samples for the tensile properties of pitch-based carbon fiber multifilaments, characterized in that it comprises at least two PTFE outer tubes (1) and fiber multifilaments (6) with a diameter greater than 50 mm, and two of the PTFE outer tubes (1) ) are arranged in parallel, the two PTFE outer tubes (1) are connected by a T-shaped bracket (3), and one end of the fiber multifilament (6) is fixed on a four On the fluorine outer tube (1), the other end of the fiber multifilament (6) is fixed on another tetrafluoroethylene outer tube (1) through another heat-resistant tape (7), and the fixed fiber multifilament (6) Dip glue and heat curing treatment in turn.

优选地，两根所述四氟外管（1）最高圆周点在同一水平高度，所述纤维复丝（6）位于两个最高圆周点之间的区域为浸胶区域。Preferably, the highest circumferential points of the two PTFE outer tubes (1) are at the same level, and the region between the two highest circumferential points of the fiber multifilaments (6) is the dipping region.

优选地，所述四氟外管（1）内通过设有不锈钢内管（2）进行支撑。Preferably, a stainless steel inner tube (2) is provided in the tetrafluoro outer tube (1) for support.

优选地，所述不锈钢内管（2）为二根，每根所述不锈钢内管（2）被一根或多根所述四氟外管（1）包覆，所述T型支架（3）水平两端分别与两根所述不锈钢内管（2）固定连接。Preferably, there are two stainless steel inner tubes (2), each of the stainless steel inner tubes (2) is covered by one or more tetrafluoro outer tubes (1), and the T-shaped bracket (3) ) horizontal ends are respectively fixedly connected with the two stainless steel inner pipes (2).

优选地，所述T型支架（3）水平一端还设有挂钩（4），所述挂钩（4）用于将所述的沥青基碳纤维复丝拉伸性能制样装置悬挂在烘干装置中。Preferably, the horizontal end of the T-shaped bracket (3) is further provided with a hook (4), and the hook (4) is used to suspend the pitch-based carbon fiber multifilament tensile property sample preparation device in the drying device .

优选地，所述T型支架（3）的垂直端用于方便握持将所述沥青基碳纤维复丝拉伸性能制样装置放置在上胶槽（8）对所述纤维复丝（6）浸胶。Preferably, the vertical end of the T-shaped bracket (3) is used to facilitate holding, and the pitch-based carbon fiber multifilament tensile property sample preparation device is placed in the upper glue tank (8) for the fiber multifilament (6). Dipping.

优选地，还包括台钳（5），所述台钳（5）与所述T型支架（3）的垂直端固定，方便所述纤维复丝（6）与所述四氟外管（1）进行粘连。Preferably, a vise (5) is also included, and the vise (5) is fixed to the vertical end of the T-shaped bracket (3), so as to facilitate the multifilament fiber (6) and the tetrafluoro outer tube (1). ) for adhesion.

优选地，所述T型支架（3）的垂直端为方管。Preferably, the vertical end of the T-shaped bracket (3) is a square tube.

优选地，所述纤维复丝（6）为沥青基碳纤维。Preferably, the fiber multifilaments (6) are pitch-based carbon fibers.

一种沥青基碳纤维复丝拉伸性能制样方法，包括以下步骤：A method for preparing samples for the tensile properties of pitch-based carbon fiber multifilaments, comprising the following steps:

步骤1、将纤维复丝（6）两端分别固定在沥青基碳纤维复丝拉伸性能制样装置的根四氟外管（1）上；Step 1. Fix both ends of the fiber multifilament (6) on a tetrafluoro outer tube (1) of the pitch-based carbon fiber multifilament tensile property sample preparation device respectively;

步骤2、将所述沥青基碳纤维复丝拉伸性能制样装置放置在上胶槽（8）中，对纤维复丝（6）充分浸渍胶液；Step 2, placing the pitch-based carbon fiber multifilament tensile property sample preparation device in the gluing tank (8), and fully immersing the fiber multifilament (6) in the glue;

步骤3、将所述沥青基碳纤维复丝拉伸性能制样装置竖直悬挂在烘干装置中加热固化，制样完成。Step 3, vertically suspend the pitch-based carbon fiber multifilament tensile property sample preparation device in a drying device to heat and solidify, and the sample preparation is completed.

该沥青基碳纤维复丝拉伸性能制样装置及制样方法具有以下有益效果：The pitch-based carbon fiber multifilament tensile property sample preparation device and the sample preparation method have the following beneficial effects:

（1）本发明将沥青纤维固定在四氟圆管上，用较少的环氧胶液就可以进行浸渍，然后垂直悬挂在烘箱里进行加热固化，样条在垂直状态下进行加热固化，多余的胶容易滴落，因此用本发明制样可以得到平滑没有胶珠的棍状样条用于拉伸测试。(1) In the present invention, the pitch fiber is fixed on the PTFE round tube, which can be impregnated with less epoxy glue, and then hung vertically in an oven for heating and curing. The spline is heated and cured in a vertical state, and the excess The glue is easy to drip, so the sample preparation of the present invention can obtain a smooth stick-shaped strip without glue beads for tensile testing.

（2）本发明浸胶时只是固定有纤维复丝的一面浸胶，在浸胶槽中用很少的胶液就能完成浸胶，每次废弃的胶液就少，标准中配制胶液都得用到丙酮，因此减少胶液的配制和废弃非常有利于环保。(2) During the dipping of the present invention, only the side where the fiber multifilaments are fixed is dipped, and the dipping can be completed with a small amount of glue in the dipping tank, and the glue that is discarded each time is less, and the glue is prepared in the standard. All have to use acetone, so reducing the preparation and disposal of glue is very beneficial to environmental protection.

（3）本发明将沥青纤维固定在直径＞50mm四氟圆管上，因而粘贴固定纤维的曲率半径较大，操作时发生断丝的可能性很小。(3) The present invention fixes the pitch fiber on a tetrafluoro tube with a diameter of more than 50 mm, so the radius of curvature of the fixed fiber is relatively large, and the possibility of wire breakage during operation is small.

附图说明Description of drawings

图1：本发明沥青基碳纤维复丝拉伸性能制样装置的主视图；Fig. 1: Front view of the pitch-based carbon fiber multifilament tensile property sample preparation device of the present invention;

图2：本发明沥青基碳纤维复丝拉伸性能制样装置的左视图；Figure 2: left side view of the pitch-based carbon fiber multifilament tensile property sample preparation device of the present invention;

图3：本发明沥青基碳纤维复丝拉伸性能制样装置的俯视图；Fig. 3: the top view of the pitch-based carbon fiber multifilament tensile property sample preparation device of the present invention;

图4：本发明沥青基碳纤维复丝拉伸性能制样装置进行固定示意图；Figure 4: Schematic diagram of fixing the pitch-based carbon fiber multifilament tensile property sample preparation device of the present invention;

图5：本发明沥青基碳纤维复丝拉伸性能制样装置进行粘贴纤维复丝示意图；Fig. 5: Schematic diagram of sticking fiber multifilament by the pitch-based carbon fiber multifilament tensile property sample preparation device of the present invention;

图6：图5的俯视图；Figure 6: Top view of Figure 5;

图7：本发明的纤维复丝示浸胶示意图；Fig. 7: the schematic diagram showing the dipping of the fiber multifilament of the present invention;

图8：本发明的纤维复丝示固化状态示意图。Figure 8: Schematic diagram showing the curing state of the fiber multifilament of the present invention.

附图标记说明：Description of reference numbers:

1—四氟外管；2—不锈钢内管；3—T型支架；4—挂钩；5—台钳；6—纤维复丝；7—耐热胶带；8—上胶槽。1—PTFE outer pipe; 2—Stainless steel inner pipe; 3—T bracket; 4—Hook; 5—Vise; 6—Fiber multifilament; 7—Heat resistant tape;

具体实施方式Detailed ways

下面结合图1至图8，对本发明做进一步说明：Below in conjunction with Fig. 1 to Fig. 8, the present invention is further described:

如图1-3所示，本发明沥青基碳纤维拉伸性能制样装置就是用2根两端已经焊接密封、外径50mm不锈钢圆管对称地固定在1根长250mm、20x20 mm方管的两头，方管中心垂直向下焊接固定1根20x20 mm的短方管（也当把手用），其中1根圆管中间最外弧面焊有1个挂钩，4根内径50mm的四氟管分别套在2根不锈钢圆管两头，里端挨着方管，外端与不锈钢密封端平齐，方管和不锈钢圆管构成T型支架3，如图1-3所示。As shown in Figures 1-3, the pitch-based carbon fiber tensile property sample preparation device of the present invention is to use two stainless steel circular tubes that have been welded and sealed at both ends and have an outer diameter of 50mm and are symmetrically fixed at the two ends of a square tube with a length of 250mm and a length of 20x20mm. , the center of the square tube is welded vertically downward to fix a short square tube of 20x20 mm (also used as a handle), one of which is welded with a hook on the outermost arc surface in the middle of one round tube, and four PTFE tubes with an inner diameter of 50mm are respectively sleeved At both ends of the two stainless steel round tubes, the inner end is next to the square tube, and the outer end is flush with the stainless steel sealing end. The square tube and the stainless steel round tube form a T-shaped bracket 3, as shown in Figure 1-3.

除此之外，两根四氟外管1平行设置，两根四氟外管1之间通过T型支架3进行连接。In addition, two PTFEouter tubes 1 are arranged in parallel, and the two PTFEouter tubes 1 are connected by a T-shaped bracket 3 .

沥青基碳纤维复丝拉伸性能制样装置的制样方法如下：The sample preparation method of the pitch-based carbon fiber multifilament tensile property sample preparation device is as follows:

1、用台钳5夹持短方管，将沥青基碳纤维拉伸性能制样装置固定平放在台钳5上，如图4所示。1. Hold the short square tube with avise 5, and fix the pitch-based carbon fiber tensile property sample preparation device on thevise 5, as shown in Figure 4.

2、用适当长度的耐热胶带7将一段沥青基碳纤维的一头粘贴固定在四氟外管1上，在适当拉紧的状态下用耐热胶带7将沥青基碳纤维的另一头粘贴固定在对应的另一四氟管1上，用相同的方式平行固定若干根纤维，如图5和6所示。2. Use a heat-resistant tape 7 of an appropriate length to stick one end of the pitch-based carbon fiber on the PTFEouter tube 1, and use the heat-resistant tape 7 to stick and fix the other end of the pitch-based carbon fiber on thecorresponding PTFE tube 1 under proper tension. On anotherPTFE tube 1, several fibers are fixed in parallel in the same way, as shown in Figures 5 and 6.

3、从台钳5取下沥青基碳纤维复丝拉伸性能制样装置，手持短方管，粘贴有沥青基碳纤维的一面冲下浸入比装置平放尺寸略大的上胶槽8中，如图7所示，充分浸渍胶液后取出，控掉多余的胶液，然后竖直悬挂在烘箱里的格栅上加热固化，固化后剪去至少长250mm的样条用于测试。粘在四氟外管1上的余料一敲就掉，清理干净装置后备用。3. Remove the pitch-based carbon fiber multifilament tensile property sample preparation device from thevise 5, hold a short square tube, punch the side with the pitch-based carbon fiber pasted down and immerse it into the gluing tank 8, which is slightly larger than the flat size of the device, such as As shown in Figure 7, after fully immersing the glue, take it out, control the excess glue, and then hang it vertically on the grid in the oven to heat and solidify. After solidification, cut the splines with a length of at least 250mm for testing. The remaining material adhered to the PTFEouter tube 1 is knocked off as soon as it is knocked out, and the device is cleaned and used for later use.

本发明沥青基碳纤维复丝拉伸性能制样装置粘贴固定沥青基碳纤维复丝的四氟圆管直径大且有胶带粘贴，很明显可以减少和控制断丝的发生，浸胶后的样条在烘箱内是垂直悬挂的，升温时多余的胶会受热粘度降低而滴落，因此加热固化后可以得到平直没有胶珠的棍状样条。浸胶时只是固定有纤维复丝的一面浸胶，在浸胶槽中用较少的胶液就能完成浸胶，每次废弃的胶液就少，标准中配置胶液都得用到溶剂丙酮，因此大量减少胶液的配制和废弃非常有利于环保。The pitch-based carbon fiber multifilament tensile property sample preparation device of the present invention sticks the tetrafluoro tube for fixing the pitch-based carbon fiber multifilament with a large diameter and is pasted with adhesive tape, which can obviously reduce and control the occurrence of broken wires. The oven is hung vertically. When the temperature is raised, the excess glue will be heated and the viscosity will decrease and drip. Therefore, after heating and curing, a straight stick-shaped spline without glue beads can be obtained. When dipping, only the side where the fiber multifilament is fixed is dipped, and the dipping can be completed with less glue in the dipping tank, and less glue is discarded each time. In the standard configuration, the glue must use a solvent Acetone, so it is very beneficial to environmental protection to greatly reduce the preparation and disposal of glue.

上面结合附图对本发明进行了示例性的描述，显然本发明的实现并不受上述方式的限制，只要采用了本发明的方法构思和技术方案进行的各种改进，或未经改进将本发明的构思和技术方案直接应用于其它场合的，均在本发明的保护范围内。The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the implementation of the present invention is not limited by the above-mentioned manner, as long as various improvements made by the method concept and technical solutions of the present invention are adopted, or the present invention is not modified without improvement. It is within the protection scope of the present invention that the ideas and technical solutions of the invention are directly applied to other occasions.

Claims (7)

1. The utility model provides a pitch base carbon fiber multifilament tensile properties system appearance device which characterized in that: the device comprises at least two tetrafluoro outer pipes (1) with the diameter larger than 50mm and fiber multifilaments (6), wherein the fiber multifilaments (6) are asphalt-based carbon fibers, the two tetrafluoro outer pipes (1) are arranged in parallel, the two tetrafluoro outer pipes (1) are connected through a T-shaped support (3), and the vertical end of the T-shaped support (3) is used for being conveniently held to place a device for preparing the tensile property of the asphalt-based carbon fiber multifilaments into a gluing groove (8) to glue the fiber multifilaments (6); one end of the fiber multifilament (6) is fixed on one tetrafluoro outer tube (1) through a heat-resistant adhesive tape (7), the other end of the fiber multifilament (6) is fixed on the other tetrafluoro outer tube (1) through another heat-resistant adhesive tape (7), and the fixed fiber multifilament (6) is subjected to gum dipping and heating curing treatment in sequence; the highest circumferential points of the two tetrafluoro outer pipes (1) are at the same horizontal height, and the area, between the two highest circumferential points, of the fiber multifilament (6) is a gumming area.

2. The pitch-based carbon fiber multifilament tensile property sample preparation device according to claim 1, wherein: the polytetrafluoroethylene outer tube (1) is internally supported by a stainless steel inner tube (2).

3. The pitch-based carbon fiber multifilament tensile property sample preparation device according to claim 2, wherein: the stainless steel inner tubes (2) are two, each stainless steel inner tube (2) is coated by one or more polytetrafluoroethylene outer tubes (1), and the two horizontal ends of the T-shaped support (3) are fixedly connected with the two stainless steel inner tubes (2) respectively.

4. The pitch-based carbon fiber multifilament tensile property sample preparation device according to claim 3, wherein: the horizontal end of the T-shaped support (3) is further provided with a hook (4), and the hook (4) is used for hanging the asphalt-based carbon fiber multifilament tensile property sample preparation device in a drying device.

5. The pitch-based carbon fiber multifilament tensile property sampling device according to any one of claims 1 to 4, wherein: the novel polytetrafluoroethylene fiber composite pipe is characterized by further comprising bench clamps (5), wherein the bench clamps (5) are fixed with the vertical ends of the T-shaped supports (3), and the fiber multifilament (6) is conveniently adhered to the polytetrafluoroethylene outer pipe (1).

6. The pitch-based carbon fiber multifilament tensile property sample preparation device according to claim 5, wherein: the vertical end of the T-shaped support (3) is a square tube.

7. A method for preparing a sample of the tensile property of an asphalt-based carbon fiber multifilament comprises the following steps:

step 1, fixing two ends of a fiber multifilament (6) on a tetrafluoro outer tube (1) of an asphalt-based carbon fiber multifilament tensile property sample preparation device according to any one of claims 1 to 6;

step 2, placing the sample preparation device for the tensile property of the asphalt-based carbon fiber multifilament into a sizing tank (8), and fully dipping the fiber multifilament (6) with glue solution;

and 3, vertically suspending the asphalt-based carbon fiber multifilament tensile property sample preparation device in a drying device for heating and curing, and completing sample preparation.

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