Study on Crack Resistance Improvement of Epoxy Insulation

Epoxy 절연물의 내크랙성 향상에 관한 연구

  • Ha, Young-Kil (Electric Power Research Lab. & Technology Center LG Cable) ;
  • Kim, Su-Yon (Electric Power Research Lab. & Technology Center LG Cable) ;
  • Lee, Sang-Jin (Electric Power Research Lab. & Technology Center LG Cable) ;
  • Kim, Young-Seong (Electric Power Research Lab. & Technology Center LG Cable) ;
  • Park, Wan-Ki (Electric Power Research Lab. & Technology Center LG Cable)
  • 하영길 (LG 전선 전력연구소 전력연구실) ;
  • 김수연 (LG 전선 전력연구소 전력연구실) ;
  • 이상진 (LG 전선 전력연구소 전력연구실) ;
  • 김영성 (LG 전선 전력연구소 전력연구실) ;
  • 박완기 (LG 전선 전력연구소 전력연구실)
  • Published : 1999.07.19

Abstract

Epoxy Compound has been used as insulation material in cable accessories. During the applying voltage to cable, heat shock is induced to accessory by the temperature difference between atmosphere and conductor. In this study, crack resistance, thermal and mechanical properties were evaluated about conventional epoxy compound and rubber toughened epoxy compound. Because rubber absorbs the stress caused by heat shock, crack resistance of rubber toughened epoxy compound is high. In the case of low thermal expansion coefficient, the compound shows high crack resistance because of low volumetric change.

Keywords