高电压技术2012，Vol.38Issue(10)：2611-2616,6.
直流污秽放电对硅橡胶表面特性破坏过程
Degradation Progress of Silicon Rubber Surface Properties Under DC Contamination Flashover
摘要
Abstract
To study the variation of surface properties under DC contamination discharge,focusing on three parts,i.e.,the loss and recovery of hydrophobicity,development of leakage current,and the characteristic of the substance generated,we experimentally researched the silicone rubber(SR) using inclined plane method.The experimental results showed that the development process of contamination discharge were through four stages,which were defined as random arcs along SR surface,damage within concentrated area,formation of hydrophobic substances,and the extinction of arcs.The hydrophobicity distribution along the SR surface was distinctive at each stage,meanwhile the peak value of leakage current changed with the variation of the surface damage.It was observed that a kind of hydrophobic substance was generated with the combustion of the DC arcs.This white powder-like substance was found on SR of several manufacturers,and it affected the location and duration of arcs.After the tests,the damaged SR samples were laid in the incubator for 48 hours,then the hydrophobicity of the damaged area was measured.It was found that the recovery of hydrophobicity of this area was quite good and the contact angle even exceeded the original level of the SR samples.关键词
硅橡胶（SR）/直流（DC）/斜面法/憎水性/泄漏电流/电弧Key words
silicone rubber(SR)/direct current(DC)/inclined plane test/hydrophobicity/leakage current/arc分类
信息技术与安全科学引用本文复制引用
王梓杨,朱正一,贾志东,关志成,李锐海,王国利..直流污秽放电对硅橡胶表面特性破坏过程[J].高电压技术,2012,38(10):2611-2616,6.基金项目
特高压工程技术（昆明、广州）国家工程实验室开放基金 （）
