新型石墨碳纤维柔性复合接地材料制备与性能研究  

Preparation and Properties of A New Graphite Carbon Fiber Flexible Composite Grounding Material

作　　者：王湘汉 范冕 何慧雯 王磊 WANG Xianghan;FAN Mian;HE Huiwen;WANG Lei(China Electric Power Research Institute,Wuhan 430074,China;State Key Laboratory of Power Grid Environmental Protection,Wuhan 430074,China)

机构地区：[1]中国电力科学研究院有限公司武汉分院,武汉430074 [2]电网环境保护国家重点实验室,武汉430074

出　　处：《电瓷避雷器》2024年第4期98-105,共8页Insulators and Surge Arresters

基　　金：国家电网公司总部科技项目(编号:5500-202026088A-0-0-00)。

摘　　要：通过压制工艺将柔性石墨与碳纤维复合,制备了一种新型无胶石墨碳纤维柔性复合接地线,以解决传统石墨接地体使用聚合物胶带来的安全隐患与环保问题。采用SEM电镜观察了复合材料的微观形貌,研究了石墨与碳纤维质量比、成型压力、高低温处理等因素对复合材料机械性能和导电性能的影响,还研究了芯线编织角度和芯线直径与结构对复合接地线的性能影响。结果证明复合接地材料具有良好的抗拉强度和电阻率,复合接地线的单位长度电阻、工频电流耐受和雷电流耐受能力满足电力行业标准要求。The author combines flexible graphite with carbon fiber by pressing process to prepare a new polymer-glue free flexible composite grounding wire,solved the safety risks and environmental problems by abandoning the polymer-glue.The micromorphology of the composite was observed by using a SEM electron microscope.The effects of graphite carbon fiber mass ratio,molding pressure,and high and low temperature treatment on the mechanical and conductive properties of composite materials are studied.The effects of the knitting angle,diameter,and structures on the composite grounding wire are also studied.The results show that the composite grounding material has good tensile strength and resistivity.The resistance per unit length,power frequency current withstand and lightning current withstand test of the composite grounding wire meet the requirements of power industry standards.

关 键 词：接地材料 柔性石墨 碳纤维 无聚合物胶 复合导电材料 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM75