环氧树脂与聚四氟乙烯表面性能的研究  

Study on surface properties of epoxy resin and PTFE

作　　者：王胜辉[1] 刘华琦 耿辉 马康 孙凯旋 律方成[1] WANG Shenghui;LIU Huaqi;GENG Hui;MA Kang;SUN Kaixuan;LÜFangcheng(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《绝缘材料》2023年第7期16-20,共5页Insulating Materials

基　　金：河北省重点研发计划项目(19212109D)。

摘　　要：为了研究不同材料绝缘子的表面性能,以环氧树脂和聚四氟乙烯(PTFE)为研究对象,首先通过表面能测试,获得不同材料绝缘子的粘附特性,然后通过试验研究不同粒径金属微粒在自然粘附状态下对绝缘子沿面闪络特性的影响。结果表明:PTFE绝缘子的表面能为30.44 mJ/m^(2),低于环氧树脂绝缘子的表面能,PTFE的黏度更小;随着附着在绝缘子表面的金属微粒粒径的减小,环氧树脂和PTFE绝缘子的沿面闪络电压逐渐增大,且两种材料的绝缘子沿面闪络性能相近;采用PTFE界面取代原有的环氧树脂界面,可以减少由金属微粒引起的绝缘故障。In order to study the surface properties of different materials of insulators,epoxy resin and polytetrafluoroethylene(PTFE)were used as research objects.Firstly,the adhesion characteristics of insulators made of different materials were obtained through surface energy test.Then,the influence of different particle sizes of metal patticles on the surface flashover characteristics of insulators under natural adhesion conditions was studied through test.The results show that the surface energy of PTFE insulators is 30.44 mJ/m2,which is lower than that of epoxy resin insulators,and the viscosity of PTFE is smaller.As the particle size of metal particles attached on the insulator surface decreases,the surface flashover voltage of epoxy resin and PTFE insulators increases gradually,and the surface flashover performance of the two materials of insulators is similar.The insulation failures caused by metal particles can be reduced by replacing the original epoxy resin interface with PTFE.

关 键 词：气体绝缘金属封闭输电线路 聚四氟乙烯 环氧树脂 表面性能 

分 类 号：TM214[一般工业技术—材料科学与工程]