대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

DGEBA/MDA/SN/천연 제올라이트계의 절연파괴현상에 미쳐는 흡습의 영향

Effect of Moisture Absorption on Dielectric Breakdown Phenomena of DGEBA/MDA/SN/Natural Zeolite System

  • 김유정 (서울시립대학교 화학공학과) ;
  • 이홍기 (우석대학교 화학공학과) ;
  • 김상욱 (서울시립대학교 화학공학과)
  • 발행 : 1999.11.20
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초록

Hygrothermal aging at the elevated temperature induces the long-term degradation of the epoxy resin. We investigated the effects of hydrothermal stress on the dielectric breakdown phenomena of epoxy composite filled with natural zeolite. The cured specimens absorbed the moisture in the autoclave at $120^{\circ}C$. $T_g$ of the deteriorated composite by moisture absorption decreased. The dielectric breakdown strength decreased with the moisture absorption cycle. It was concluded that the thermal stress and the high water-vapour-pressure deteriorated the natural zeolite filled epoxy resin system, consequently and the tree growth rate increased.

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