GIL盆式绝缘子表面环氧树脂/石墨烯涂层热性能的分子动力学研究  

Study of Epoxy/Graphene Coating Thermal Properties on Surface of Basin Insulator in GIL by Molecular Dynamic Simulation

作　　者：李阳 张晓林 唐琰 江辉 王哲[2] LI Yang;ZHANG Xiaolin;TANG Yan;JIANG Hui;WANG Zhe(Lijiang Power Supply Bureau,Yunnan Power Grid Co.,Ltd.,Lijiang Yunnan 674100,China;North China Electric Power University,Beijing 102206,China)

机构地区：[1]云南电网有限责任公司丽江供电局,云南丽江674100 [2]华北电力大学,北京102206

出　　处：《当代化工》2025年第1期46-52,共7页Contemporary Chemical Industry

基　　金：云南电网有限责任公司2022年第一批(补充)科技项目(项目编号:051400KK52220003);国家自然科学基金面上项目(项目编号:52177140);国家自然科学基金重点项目(项目编号:51737005)。

摘　　要：盆式绝缘子是气体绝缘金属封闭输电线路(GIL)中的关键设备,但由于GIL中金属微粒的运动,绝缘子表面因电荷积聚而发生沿面闪络,在盆式绝缘子表面涂覆涂层可有效抑制微粒运动和沿面闪络。使用分子动力学方法,模拟了石墨烯(GN)、羟基功能化石墨烯(GNOH)、羧基功能化石墨烯(GNCOOH)和氨基功能化石墨烯(GNNH_(2))4种石墨烯对环氧树脂热导率的影响,结果表明:EP/GN、EP/GNOH、EP/GNCOOH和EP/GNNH_(2)较EP的热导率分别提高了30.88%、49.10%、36.72%和44.84%,并分析4种石墨烯对环氧树脂热裂解产物的影响;掺杂了GNOH、GNCOOH和GNNH_(2)的功能化石墨烯的环氧树脂归一化分子数更小,有更好的热稳定性。Basin insulator is the key equipment in gas insulated metal enclosed transmission line(GIL).However,due to the movement of metal particles in GIL,surface flashover occurs on the surface of insulator due to charge accumulation.Coating on the surface of basin insulator can effectively inhibit particle movement and surface flashover.In this paper,the effects of graphene(GN),hydroxyl functionalized graphene(GNOH),carboxyl functionalized graphene(GNCOOH)and amino functionalized graphene(GNNH_(2))on the thermal conductivity of epoxy resin were simulated by molecular dynamics method.It was found that the thermal conductivity of EP/GN,EP/GNOH,EP/GNCOOH and EP/GNNH_(2) increased by 30.88%,49.10%,36.72% and 44.84%,respectively,compared with EP.Theeffects of four kinds of graphene on the pyrolysis products of epoxy resin were analyzed.It was found that the epoxy resin doped with GNOH,GNCOOH and GNNH_(2) functionalized graphene had smaller normalized molecular number and better thermal stability.

关 键 词：盆式绝缘子 环氧树脂 功能化石墨烯 分子动力学 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]