Effective Modulation of Surface Conductivity of Epoxy Resin Insulators by Direct Fluorination

被引：0

作者：

Liu, Yaqiang ^{[1
,2
]}

An, Zhenlian ^{[1
]}

Yin, Qianqian ^{[2
]}

Zheng, Feihu ^{[1
]}

Zhang, Yewen ^{[1
]}

机构：

[1] Tongji Univ, Dept Elect Engn, Shanghai 200092, Peoples R China

[2] Tongji Univ, Sch Phys Sci & Engn, Shanghai, Peoples R China

来源：

PROCEEDINGS OF THE 2013 IEEE INTERNATIONAL CONFERENCE ON SOLID DIELECTRICS (ICSD 2013), VOLS 1 AND 2 | 2013年

基金：

中国国家自然科学基金;

关键词：

Epoxy resin insulator; surface fluorination; fluorination temperature; surface electrical properties; surface physicochemical characteristics; GIS;

D O I：

暂无

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：

Epoxy resin samples were surface fluorinated using a F-2/N-2 mixture at different temperatures for the same time. ATR-IR analyses indicate substantial changes in surface chemical composition and structure by the fluorinations. SEM observations show an increase of thickness of the fluorinated layer and a change of its surface morphology with fluorination temperature. Conductivity measurements reveal a large increase in surface conductivity and surface potential measurements consistently show a low initial surface potential and rapid potential decay after corona charging, strongly depending on fluorination temperature and environmental humidity. The initial surface potential was found to decrease dramatically above a critical surface conductivity and almost to zero when surface conductivity increased to 10(-12) S. Surface polarity of the epoxy sample was found to dramatically increase with fluorination temperature. An increase in degree of chain scission with fluorination temperature is considered to be the main cause for the increases of surface conductivity and surface polarity.

引用

页码：1072 / 1075

页数：4

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