技术领域technical field
本发明涉及输电电缆领域，具体涉及一种输电线路用纤维复合芯导线。The invention relates to the field of power transmission cables, in particular to a fiber composite core conductor for power transmission lines.
背景技术Background technique
我国不仅发电业的发展滞后，输电业的弊端也凸现出来，输电线路已不堪承受传输容量快速扩容的需求，由于过负荷造成的停电、断电故障频频发生，电力传输成为电力工业发展的“瓶颈”，各国均在研究新型架空输电线路用导线，以取代传统的钢芯铝绞线，纤维复合芯导线由此应运而生。Not only is the development of the power generation industry lagging behind in my country, but the disadvantages of the power transmission industry are also prominent. The transmission lines have been unable to withstand the rapid expansion of transmission capacity. Power failures and power failures caused by overloading occur frequently. Power transmission has become a "bottleneck" for the development of the power industry. ", all countries are researching new types of wires for overhead transmission lines to replace traditional steel-cored aluminum stranded wires, and fiber composite core wires have emerged as the times require.
纤维复合导线是目前全世界电力输变电系统理想的取代传统的钢芯铝铰导线、铝包钢导线、铝合金导线及进口殷钢导线的新产品，通常的钢芯铝绞线的钢芯被用纤维制成的复合材料芯线所代替，纤维复合导线与传统导线相比具有重量轻、线膨胀系数小、强度大、低线损、弛度小、低弧垂、耐高温、耐腐蚀、与环境亲和等优点，实现了电力传输的节能、环保与安全，公认为一种新型节能型输电导线，广泛应用于线路增容改造和新建线路中。Fiber composite wire is an ideal new product to replace traditional steel-cored aluminum stranded wire, aluminum-clad steel wire, aluminum alloy wire and imported Invar wire in power transmission and transformation systems around the world. It is replaced by a composite material core wire made of fiber. Compared with the traditional wire, the fiber composite wire has light weight, small linear expansion coefficient, high strength, low line loss, small sag, low sag, high temperature resistance, and corrosion resistance. It has the advantages of being friendly to the environment and realizing energy saving, environmental protection and safety of power transmission. It is recognized as a new type of energy-saving transmission wire and is widely used in line expansion and reconstruction and new lines.
碳纤维是一种石墨的六方晶格层状结构，是一种全黑体材料，因此在电热应用中，表现出来的电热转换效率高。在特定的条件下，高温不氧化，单位面积的电流的负荷强度和机械强度不发生改变。目前世界上只有美国和日本开发出碳纤维导线，日本一家碳纤维导线企业的产量就占到世界40％左右。Carbon fiber is a hexagonal lattice layered structure of graphite, which is an all-black body material, so in electrothermal applications, it exhibits high electrothermal conversion efficiency. Under certain conditions, high temperature does not oxidize, and the load strength and mechanical strength of the current per unit area do not change. At present, only the United States and Japan have developed carbon fiber wires in the world, and the output of a carbon fiber wire company in Japan accounts for about 40% of the world.
但是，一方面纤维复合芯在服役环境下会受到紫外光、水汽、高温的长期作用，树脂材料会发生降解，导致复合芯性能劣化；另一方面，输电线路长期处于风振工况下，有时甚至会发生舞动等特殊工况，振动或舞动过程中，复合芯表面和铝绞线会发生摩擦，摩擦的结果使得复合芯表面发生磨损甚至破坏，导致复合芯安全性下降。因此，有必要对复合芯导线进行耐磨和耐环境腐蚀保护。However, on the one hand, the fiber composite core will be subjected to long-term effects of ultraviolet light, water vapor, and high temperature in the service environment, and the resin material will be degraded, resulting in deterioration of the performance of the composite core; Even special working conditions such as galloping may occur. During the vibration or galloping process, the surface of the composite core will rub against the aluminum stranded wire. As a result of the friction, the surface of the composite core will be worn or even damaged, resulting in a decrease in the safety of the composite core. Therefore, it is necessary to protect the composite core wire against wear and environmental corrosion.
例如申请号为CN201220142300.X，实用新型名称为“一种热塑性树脂碳纤维电缆”的实用新型专利申请，涉及一种热塑性树脂碳纤维电缆，由碳纤维增强环氧树脂复合材料内芯外覆盖的玻璃纤维增强环氧树脂复合材料外芯，在玻璃纤维增强环氧树脂复合材料外芯和第一层梯形铝导线之间设置聚四氟乙烯层或绝缘物质层构成的保护性涂层，在玻璃纤维增强环氧树脂复合材料外芯外覆盖第一层梯形铝导线，在第一层梯形铝导线外覆盖第二层梯形铝导线。聚四氟乙烯层或绝缘物质层主要使芯棒和铝线间完全绝缘，使二者之间不存在接触电位差，使铝导线免受电腐蚀。不能很好的起到耐磨和耐环境腐蚀的作用。For example, the application number is CN201220142300.X, and the utility model patent application named "a thermoplastic resin carbon fiber cable" relates to a thermoplastic resin carbon fiber cable, which is reinforced by glass fiber reinforced by carbon fiber reinforced epoxy resin composite material inner core and outer covering Outer core of epoxy resin composite material, a protective coating composed of a polytetrafluoroethylene layer or an insulating material layer is set between the outer core of glass fiber reinforced epoxy resin composite material and the first layer of trapezoidal aluminum conductors, and a protective coating composed of a glass fiber reinforced ring The outer core of the oxygen resin composite material covers the first layer of trapezoidal aluminum conductors, and the outer core of the first layer of trapezoidal aluminum conductors covers the second layer of trapezoidal aluminum conductors. The polytetrafluoroethylene layer or insulating material layer mainly insulates the mandrel and the aluminum wire completely, so that there is no contact potential difference between the two, and the aluminum wire is protected from electric corrosion. Can not play a good role in wear resistance and environmental corrosion resistance.
发明内容Contents of the invention
为了克服现有技术的上述缺陷，本发明针对输电线路用纤维复合芯导线纤维复合芯易磨损和受到环境腐蚀的问题，提供了一种输电线路用纤维复合芯导线，该输电线路用纤维复合芯导线制造过程中采用快速涂层涂覆技术，在纤维复合芯表面形成耐磨、耐环境腐蚀涂层。In order to overcome the above-mentioned defects in the prior art, the present invention aims at the problem that the fiber composite core of the fiber composite core wire for power transmission lines is easy to wear and is corroded by the environment, and provides a fiber composite core wire for power transmission lines, the fiber composite core for power transmission lines During the wire manufacturing process, rapid coating coating technology is used to form a wear-resistant and environmental corrosion-resistant coating on the surface of the fiber composite core.
为实现上述发明目的，本发明采取的技术方案为：For realizing above-mentioned purpose of the invention, the technical scheme that the present invention takes is:
一种输电线路用纤维复合芯导线，导线由依次设置的纤维复合芯、涂层和外层绞线组成，涂层为选自氟碳树脂涂料、聚脲弹性体涂料、聚氨酯涂料中的一种或多种涂料的涂覆层。A fiber composite core wire for power transmission lines, the wire is composed of a fiber composite core, a coating, and an outer stranded wire arranged in sequence, and the coating is one selected from fluorocarbon resin coatings, polyurea elastomer coatings, and polyurethane coatings. or coating layers of various paints.
进一步的，纤维复合芯为碳纤维复合芯或高强玻纤复合芯。Further, the fiber composite core is a carbon fiber composite core or a high-strength glass fiber composite core.
进一步的，高强玻纤复合芯为玻纤增强环氧树脂制芯。Further, the high-strength glass fiber composite core is made of glass fiber reinforced epoxy resin.
进一步的，涂层为单层，厚度为50～100μm。Further, the coating is a single layer with a thickness of 50-100 μm.
进一步的，涂层为多层，厚度为50～100μm。Further, the coating is multi-layered with a thickness of 50-100 μm.
进一步的，多层由内至外为耐腐蚀涂料层和耐磨涂料层，耐腐蚀涂料层为氟碳树脂涂料涂覆层，耐磨涂料层为聚脲弹性体涂料涂覆层或聚氨酯涂料涂覆层。Further, the multi-layers are corrosion-resistant coating layer and wear-resistant coating layer from inside to outside, the corrosion-resistant coating layer is a fluorocarbon resin coating layer, and the wear-resistant coating layer is a polyurea elastomer coating layer or a polyurethane coating layer. cladding.
进一步的，氟碳树脂涂料包括热固性氟碳树脂和交联剂，热固性氟碳树脂的共聚链段包括三氟氯乙烯、醋酸乙烯酯、叔碳酸乙烯酯、羟烷基烯醚，交联剂为封闭异氰酸酯。Further, the fluorocarbon resin coating includes a thermosetting fluorocarbon resin and a crosslinking agent, and the copolymerized segment of the thermosetting fluorocarbon resin includes chlorotrifluoroethylene, vinyl acetate, vinyl tertiary carbonate, and hydroxyalkylene ether, and the crosslinking agent is Block isocyanate.
进一步的，聚脲弹性体涂料包括端胺基聚醚树脂、胺扩链剂和MDI预聚物。聚脲弹性体涂料选用喷涂型体系。Further, the polyurea elastomer coating includes amine-terminated polyether resin, amine chain extender and MDI prepolymer. Polyurea elastomer coatings are spray-on systems.
进一步的，聚氨酯涂料为外交联水性聚氨酯涂料，包括聚氨酯和交联剂，所述交联剂为氮丙啶。氮丙啶为多官能团氮丙啶。Further, the polyurethane coating is an externally linked waterborne polyurethane coating, including polyurethane and a crosslinking agent, and the crosslinking agent is aziridine. Aziridine is a polyfunctional group aziridine.
进一步的，纤维复合芯为圆柱形，直径为5～10mm。Further, the fiber composite core is cylindrical with a diameter of 5-10 mm.
进一步的，涂料为快速固化涂料，固化温度为170～190℃，固化时间为1～4min。Further, the coating is a fast-curing coating, the curing temperature is 170-190° C., and the curing time is 1-4 minutes.
本发明的另一目的为提供了一种制备输电线路用纤维复合芯导线的方法，包括如下步骤：Another object of the present invention is to provide a method for preparing a fiber composite core wire for transmission lines, comprising the steps of:
1)浸胶：经预处理的纤维束在牵引机牵引下，于浸渍胶槽充分浸渍树脂：1) Dipping: The pretreated fiber bundles are fully impregnated with resin in the dipping tank under the traction of the tractor:
过程中排除多余的树脂和气泡；Eliminate excess resin and air bubbles during the process;
2)热固化成型：将步骤1所得纤维束拉挤出高温固化模具脱模成型，温度为180～210℃，固化时间为30～90s；2) Thermal curing molding: pulling and extruding the fiber bundle obtained in step 1 into a high-temperature curing mold for demoulding, the temperature is 180-210°C, and the curing time is 30-90s;
3)涂覆涂层：将热固化成型的纤维复合芯快速冷却后经涂覆装置涂覆涂料；3) Coating: coating the thermally cured fiber composite core through the coating device after rapid cooling;
涂料粘度为300～600cps，涂层厚度为50～100μm；涂层太薄易被磨损，太厚在快速固化过程中易龟裂；The viscosity of the paint is 300-600cps, and the thickness of the coating is 50-100μm; if the coating is too thin, it is easy to be worn, and if it is too thick, it is easy to crack during the rapid curing process;
4)后固化成型：将涂覆有涂料的纤维复合芯经高温固化箱后固化，温度为160～200℃，固化时间为3～5min；与复合芯生产线相匹配，选用快速固化涂料，固化温度170-190℃，固化时间为1-4min；4) Post-curing molding: The fiber composite core coated with paint is cured after passing through a high-temperature curing box at a temperature of 160-200°C and a curing time of 3-5 minutes; matching with the composite core production line, a fast-curing coating is selected and the curing temperature is 170-190℃, curing time is 1-4min;
5)于后固化成型的纤维复合芯外包覆外层绞线。5) The outer layer stranded wire is covered with the post-cured fiber composite core.
进一步的，步骤3所述涂覆涂层为选用高压喷涂、料槽浸涂或排笔刷涂方法涂覆。Further, the coating coating described in step 3 is applied by high-pressure spraying, trough dipping or row brushing.
料槽浸涂和排笔刷涂两种方法工艺简单、成本较低，涂层厚度均匀性稍差；The two methods of trough dip coating and row brush coating are simple in process, low in cost, and slightly poor in uniformity of coating thickness;
高压喷涂通过控制流量20-50ml/min，调节喷枪压力0.15-0.2MPa控制涂层的厚度和致密性；High-pressure spraying controls the thickness and compactness of the coating by controlling the flow rate of 20-50ml/min and adjusting the spray gun pressure of 0.15-0.2MPa;
涂覆装置为近密封结构，入线口和出线口大小控制为容纳纤维复合芯通过，近密封结构有利于防止喷涂过程中涂料的飞扬，可减少涂料浪费。The coating device has a near-seal structure, and the size of the wire inlet and outlet is controlled to accommodate the passage of the fiber composite core. The near-seal structure is conducive to preventing the paint from flying during the spraying process and can reduce paint waste.
纤维复合芯直径为5-10mm圆柱形结构，涂覆装置具备围绕纤维复合芯旋转功能，保证了表面涂层厚度均匀。The fiber composite core has a cylindrical structure with a diameter of 5-10mm, and the coating device has the function of rotating around the fiber composite core to ensure uniform thickness of the surface coating.
由于纤维复合芯采用拉挤工艺，涂覆过程速度是与线芯拉挤速度相同。Since the fiber composite core adopts the pultrusion process, the speed of the coating process is the same as the pultrusion speed of the wire core.
快速固化涂料具备耐磨与耐腐蚀，还与纤维复合芯表面具有较好的物理化学相容性，保证了涂料与纤维复合芯的结合强度。The fast-curing coating is wear-resistant and corrosion-resistant, and has good physical and chemical compatibility with the surface of the fiber composite core, which ensures the bonding strength between the coating and the fiber composite core.
氟碳树脂、聚氨酯涂料由于其憎水性强，抗湿热能力优异，可以用于酸雨或沿海常年湿度、腐蚀性较大的地域输电线路。Fluorocarbon resins and polyurethane coatings can be used for power transmission lines in acid rain or coastal areas with high humidity and high corrosion due to their strong hydrophobicity and excellent resistance to heat and humidity.
聚脲弹性体涂料由于耐磨性较强，可以作为耐磨涂层用在常年风力较大，易于发生振动和舞动地区输电线路。Due to its strong wear resistance, the polyurea elastomer coating can be used as a wear-resistant coating for transmission lines in areas with strong winds all year round and prone to vibration and galloping.
为了保证涂层的防护效果，涂层的耐磨性(1000g/1000r)小于90mg(GB/T1768-79(89))，结合力大于3MP(GB/T5210-2006)，长期耐热温度为160℃，耐湿热良好(QJ990.10-86)。In order to ensure the protective effect of the coating, the wear resistance (1000g/1000r) of the coating is less than 90mg (GB/T1768-79 (89)), the binding force is greater than 3MP (GB/T5210-2006), and the long-term heat resistance temperature is 160 ℃, good resistance to heat and humidity (QJ990.10-86).
由于采用了上述技术方案，与现有技术相比，本发明的有益效果包括：Owing to adopting above-mentioned technical scheme, compared with prior art, the beneficial effect of the present invention comprises:
1.本发明中的纤维复合芯导线的涂层固化速度快，涂覆成本低。1. The coating of the fiber composite core conductor in the present invention has a fast curing speed and low coating cost.
2.本发明中的纤维复合芯导线的涂层耐磨、耐腐蚀、耐湿热、耐水汽、抗紫外，保护纤维复合芯免受环境腐蚀和铝线磨损，提高了纤维复合芯抗老化性能，有效延长了纤维复合芯的使用寿命，提高了纤维复合芯导线的安全可靠性。2. The coating of the fiber composite core wire in the present invention is wear-resistant, corrosion-resistant, heat-and-humidity resistant, water vapor-resistant, and ultraviolet-resistant, protects the fiber composite core from environmental corrosion and aluminum wire wear, and improves the anti-aging performance of the fiber composite core. The service life of the fiber composite core is effectively extended, and the safety and reliability of the fiber composite core conductor is improved.
3.本发明中的纤维复合芯导线避免了双金属间腐蚀。3. The fiber composite core wire in the present invention avoids intermetallic corrosion.
4.本发明中的纤维复合芯导线提供了更高的载流容量，同时也有效的降低了工程成本。4. The fiber composite core conductor in the present invention provides a higher current carrying capacity, and at the same time effectively reduces the engineering cost.
5.本发明中的纤维复合芯导线具有高强度线芯，减少电缆架的数量，降低了电缆架的高度，节省用地，减少有色金属资源消耗，有助于构造安全、环保、高效节约型输电网络。5. The fiber composite core wire in the present invention has a high-strength wire core, which reduces the number of cable racks, reduces the height of the cable racks, saves land, reduces the consumption of non-ferrous metal resources, and contributes to the construction of safe, environmentally friendly, efficient and energy-saving power transmission The internet.
6.本发明中的纤维复合芯导线易于快速成型，成本较低、防护性能好。6. The fiber composite core conductor in the present invention is easy to form quickly, has low cost and good protection performance.
7.本发明中的纤维复合芯导线的涂层与纤维复合芯表面结合强度高。7. The coating of the fiber composite core wire in the present invention has high bonding strength with the surface of the fiber composite core.
8.本发明中的纤维复合芯导线的涂层不易剥落与开裂。8. The coating of the fiber composite core wire in the present invention is not easy to peel off and crack.
9.本发明中的纤维复合芯导线制备方法中涂层涂覆装置为近密封结构，入线口和出线口大小控制为容纳纤维复合芯通过，近密封结构有利于防止喷涂过程中涂料的飞扬，可减少涂料浪费。9. In the preparation method of the fiber composite core wire in the present invention, the coating coating device is a near-seal structure, and the size of the wire inlet and outlet is controlled to accommodate the passage of the fiber composite core. The near-seal structure is conducive to preventing the coating from flying during the spraying process , can reduce paint waste.
10.本发明中的纤维复合芯导线制备方法中涂覆装置具备围绕复合芯旋转功能，以保证涂层厚度的均匀性。10. In the preparation method of the fiber composite core wire in the present invention, the coating device has the function of rotating around the composite core to ensure the uniformity of the coating thickness.
具体实施方式detailed description
下面结合实例对本发明进行详细的说明。Below in conjunction with example the present invention is described in detail.
实施例1：Example 1:
经浸胶处理得到纤维束经190℃成型模具以0.7m/min的速度拉出直径为5mm碳纤维复合芯，经过1分钟风冷冷却后表面温度降至40℃，穿过0.5m密封结构的高压喷涂室，多喷头旋转结构持续动作，围绕复合芯以10转/秒的速度旋转，将料槽中的氟碳树脂涂料，高压喷涂通过控制流量30ml/min，调节喷枪压力0.15MPa均匀喷涂到碳纤维复合芯表面，涂料粘度为300cps，碳纤维复合芯在190℃下后固化不低于4min，测试涂层厚度为70um，漆膜耐磨性(1000g/1000r)为45mg(GB/T1768-79(89))，长期耐热温度为160℃，结合力为6MP(GB/T5210-2006)，耐湿热良好(QJ990.10-86)。The fiber bundle obtained by dipping treatment is pulled out of a carbon fiber composite core with a diameter of 5mm at a speed of 0.7m/min by a molding die at 190°C. After 1 minute of air cooling, the surface temperature drops to 40°C. In the spraying room, the multi-nozzle rotating structure continues to move, and rotates around the composite core at a speed of 10 revolutions per second. The fluorocarbon resin coating in the trough is sprayed evenly on the carbon fiber by controlling the flow rate of 30ml/min and adjusting the spray gun pressure to 0.15MPa. On the surface of the composite core, the viscosity of the coating is 300cps, the carbon fiber composite core is post-cured at 190°C for no less than 4min, the thickness of the test coating is 70um, and the abrasion resistance (1000g/1000r) of the paint film is 45mg (GB/T1768-79(89 )), the long-term heat resistance temperature is 160°C, the binding force is 6MP (GB/T5210-2006), and the heat and humidity resistance is good (QJ990.10-86).
实施例2Example 2
经浸胶处理得到纤维束经180℃成型模具以0.4m/min的速度拉出直径为8mm碳纤维复合芯，经过1分钟冷却后表面温度降至35℃，穿过0.5m密封结构的排比刷涂装置的涂覆腔，自动排胶排笔围绕复合芯0.5转/秒旋转，将料槽中的聚脲弹性体涂料，均匀刷涂到碳纤维复合芯表面，涂料粘度为400cps，碳纤维复合芯在160℃下后固化不低于3min，测试涂层厚度为96um(GB/T13452.2-92)，漆膜耐磨性(1000g/1000r)为43mg(GB/T1768-79(89))，长期耐热温度为165℃，结合力为6MP(GB/T5210-2006)，耐湿热良好(QJ990.10-86)。The fiber bundle obtained after dipping treatment is pulled out of a carbon fiber composite core with a diameter of 8mm at a speed of 0.4m/min by a 180°C forming mold. After cooling for 1 minute, the surface temperature drops to 35°C, and the row ratio brushing through the 0.5m sealing structure In the coating chamber of the device, the automatic glue discharge and pen rotation revolves around the composite core at 0.5 rpm, and the polyurea elastomer coating in the trough is evenly brushed on the surface of the carbon fiber composite core. The viscosity of the coating is 400cps, and the carbon fiber composite core is at 160 After curing at ℃ for no less than 3min, the thickness of the test coating is 96um (GB/T13452.2-92), and the abrasion resistance (1000g/1000r) of the paint film is 43mg (GB/T1768-79(89)), long-term resistance The heating temperature is 165°C, the binding force is 6MP (GB/T5210-2006), and the heat and humidity resistance is good (QJ990.10-86).
实施例3Example 3
经浸胶处理得到纤维束经200℃成型模具以0.5m/min的速度拉出直径为10mm高强玻纤复合芯，经过1分钟冷却后表面温度降至30℃，穿过1m密封结构的料槽浸涂装置的涂覆腔，涂覆腔内有一对上下可调节滑轮装置，滑轮卡住高强玻纤复合芯施加向下压力，使高强玻纤复合芯浸入料槽中的高耐磨聚氨酯涂料，涂料粘度为600cps，高强玻纤复合芯在200℃下后固化5min，测试涂层厚度为90um(GB/T13452.2-92)，漆膜耐磨性(1000g/1000r)为42mg(GB/T1768-79(89))，长期耐热温度为165℃，结合力为5MP(GB/T5210-2006)，耐湿热良好(QJ990.10-86)。The fiber bundle obtained after dipping treatment is pulled out of a high-strength glass fiber composite core with a diameter of 10mm at a speed of 0.5m/min by a molding die at 200°C. After cooling for 1 minute, the surface temperature drops to 30°C and passes through a trough with a 1m sealed structure. In the coating chamber of the dip coating device, there is a pair of adjustable pulley devices up and down in the coating chamber. The pulleys clamp the high-strength glass fiber composite core to apply downward pressure, so that the high-strength glass fiber composite core is immersed in the high wear-resistant polyurethane coating in the material tank. The viscosity of the paint is 600cps, the high-strength glass fiber composite core is post-cured at 200°C for 5 minutes, the thickness of the test coating is 90um (GB/T13452.2-92), and the abrasion resistance of the paint film (1000g/1000r) is 42mg (GB/T1768 -79(89)), the long-term heat resistance temperature is 165°C, the binding force is 5MP (GB/T5210-2006), and the heat and humidity resistance is good (QJ990.10-86).
最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参照上述实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者等同替换，而未脱离本发明精神和范围的任何修改或者等同替换，其均应涵盖在本发明的权利要求范围当中。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310672144.7ACN103646718B (en) | 2013-12-12 | 2013-12-12 | A kind of fiber composite core conductive wire for power transmission line |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310672144.7ACN103646718B (en) | 2013-12-12 | 2013-12-12 | A kind of fiber composite core conductive wire for power transmission line |
| Publication Number | Publication Date |
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| CN103646718A CN103646718A (en) | 2014-03-19 |
| CN103646718Btrue CN103646718B (en) | 2016-01-20 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201310672144.7AActiveCN103646718B (en) | 2013-12-12 | 2013-12-12 | A kind of fiber composite core conductive wire for power transmission line |
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| CN1898085A (en)* | 2003-10-22 | 2007-01-17 | Ctc电缆公司 | Aluminum conductor composite core reinforced cable and preparation method thereof |
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