한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

열화 메커니즘 규명을 위한 옥외용 실리콘고무의 산성비 성분 열화특성 연구

A Consideration of Degradation Mechanism of a Effect of the Nitric Solution on the Aging Characteristics of the Outdoor Silicone Rubber

  • Lee, J.H. (Daegu Technical College, Dept. of Electrical Engineering)
  • 발행 : 2002.05.17
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초록

In this paper, aging characteristics of outdoor silicone rubber insulator resulting from the acid rain have been investigated with regards to nitrate ion $({NO_{3}}^{-1})$. For this purpose, silicone rubber was aged by immersing into the nitric solutions with different level pH during 1500 hours and various tests (tracking, $tan{\delta}$, breakdown voltage, SEM, EDS, contact angle) were performed. It was observed that the degradation was increased to pH 2.5 slightly and at pH 1.5 highly. And thus, it could be expected that there is certain critical point between pH 1.5 and 2.5, which leads to throught degradation.

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