한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)
- 한국전기전자재료학회 2003년도 춘계학술대회 논문집 유기절연재료 방전 플라즈마연구회
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- Pages.1-5
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- 2003
Effect of Surface Charge in Hydrophobicity of Insulating Material and Decay of Surface Voltage after Corona Charging
- Huh, Chang-Su (INHA University) ;
- Youn, Bok-Hee (LG Cable Ltd.) ;
- Seo, You-Jin (INHA University) ;
- Hwang, Sun-Mook (INHA University)
- 발행 : 2003.05.30
초록
This paper presented the effects of accumulation of surface charges on hydrophobicity level and the surface states of silicone polymer used for outdoor insulator treated by ultraviolet irradiation and corona discharge through measuring surface voltage decay of a corona-charged specimen were investigated. The surface resistivity by the method of the surface potential decay was compared with the value by the three electrodes methods. From this study, it was found that the accumulation of surface charges above a critical surface voltage on silicone insulating materials could lead to the temporary loss of surface hydrophobicity. In addtion, uv stress lead to a longer decay time of surface charges. We could conclude that the effects of surface charges on hydrophocity level and the changes of surface state by various artificial treatments were understood through a trend of surface potential decay.