Nonlinear Conduction and Surface Potential Decay of Epoxy/SiC Nanocomposites

被引：41
作者：
Han, Yongsen [1 ,2 ]
Li, Shengtao [1 ]
Min, Daomin [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Shaanxi, Peoples R China
[2] Harbin Univ Sci & Technol, Minist Educ, Key Lab Engn Dielect & Its Applicat, Harbin 150080, Heilongjiang, Peoples R China
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2017年 / 24卷 / 05期
基金：
美国国家科学基金会;
关键词：
Epoxy; SiC; nanocomposite; surface potential decay; nonlinear conduction; permittivity; interaction zone; CHARGE ACCUMULATION; INSULATORS; STRESS; POLYETHYLENE; TEMPERATURE; MECHANISMS; DYNAMICS; MOBILITY; FORM;
D O I：
10.1109/TDEI.2017.006454
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The nonlinear conduction of polymeric insulation may solve the surface charge accumulation, avoiding the distortion of electric field and the flashover phenomenon. As the silicon carbide (SiC) powder is usually used to improve the nonlinear conduction of polymer composites, the epoxy/SiC nanocomposites are prepared and the dc conductivity, permittivity and isothermal surface potential decay characteristics are investigated. The experimental results show that the conduction of high filler loading is field dependent and is attributed to a new conduction mechanism. The permittivity is closely related to the interaction zone around nanoparticles. The isothermal surface potential decay characteristics are greatly affected by the charging polarity, charging level and filler loading. The investigation indicates that the nonlinear conduction plays an important role in the surface potential decay.
引用
收藏
页码：3154 / 3164
页数：11
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