Synthesis and Properties of Poly(ester-imide) Resin for High Temperature Resistant Electrical Insulation

고내열성 전기 절연용 Poly(ester-imide) 수지의 합성 및 물성

  • Huh, Wansoo (Department of Chemical & Environmental Engineering, Soongsil University) ;
  • Lee, SangWon (Department of Chemical & Environmental Engineering, Soongsil University) ;
  • Kim, Jeongyeol (Department of Chemical & Environmental Engineering, Soongsil University) ;
  • Park, Leesoon (Department of Polymer Science, Kyungpook National University) ;
  • Kim, Soonhak (Department of Polymer Science, Kyungpook National University) ;
  • Haw, JungRim (Division of Chemical & Biochemical Engineering, Konkuk University)
  • 허완수 (숭실대학교 환경화학공학과) ;
  • 이상원 (숭실대학교 환경화학공학과) ;
  • 김정열 (숭실대학교 환경화학공학과) ;
  • 박이순 (경북대학교 고분자공학과) ;
  • 김순학 (경북대학교 고분자공학과) ;
  • 허정림 (건국대학교 화학생물공학부)
  • Received : 1999.05.17
  • Accepted : 1999.07.08
  • Published : 1999.08.10

Abstract

Poly(ester-imide)(PEI) for the electrical insulation coating was synthesized and evaluated with one-step method as well as two-step method. For the synthesis of poly(ester-imide), imide repeat unit of N,N'-(4,4'-diphenylmethane) bistrimellitimide(DID) was initially made from trimellitic anhydride(TMA) and methylene dianiline(MDA), followed by the second stage reaction of esterification. One-step reaction was performed by reaction of TMA, MDA, dimethyl terephthalate(DMT), ethylene glycol(EG), and 1,3,5-tris-(2-hydroxy ethyl) isocyanurate(THEIC) in m-cresol solvent at a time. The synthesized poly(ester-imide) was cured with xylene, P-5030K(phenol-formaldehyde resin), TK-8(TDI type blocked polyisocyanate) and tetrapropyltitanate(TPT). It was found that the content of hydroxyl group, amount of DMT, and imide repeat unit played important role for the properties of electrical insulation coating film.

Acknowledgement

Supported by : 한국과학재단

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