Water Tree Characteristics of Crosslinked Polythylene

가교 폴리에틸렌의 수트리 특성

  • Nam, Jin-Ho (Polymer Technology Group, Advanced R&D Center, LS Cable) ;
  • Kim, Woong (Polymer Technology Group, Advanced R&D Center, LS Cable) ;
  • Kim, Hyeon-Seok (Polymer Technology Group, Advanced R&D Center, LS Cable) ;
  • Kim, Joon-Sun (Polymer Technology Group, Advanced R&D Center, LS Cable)
  • 남진호 (LS 전선 중앙연구소 고분자기술그룹) ;
  • 김웅 (LS 전선 중앙연구소 고분자기술그룹) ;
  • 김현석 (LS 전선 중앙연구소 고분자기술그룹) ;
  • 김준선 (LS 전선 중앙연구소 고분자기술그룹)
  • Published : 2008.11.06

Abstract

Water tree experiments were done for several types of cross-linked polyethylenes. Test method is followed by ASTM D6097. Polyethylene is divided for four subgroup. First One is chemically cross-linked general XLPE, and second one is chemically cross-linked tree-retardant XLPE, and the third one is silane cross-linked polyethylene made by monosil process, and the last one is silane cross-linked polythylene made by copolymer. Tree retardant XLPE shows the shortest water tree length. Cahemcally cross-linked general XLPE shows the longest water tree length. Silane cross-linked polyethylene by copolymer is similar to tree retardant XLPE and similar breakdown strength. So silane cross-linked XLPE by copolymer could be used for the the medium voltage cable which should have tree retardant characteristics.

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