Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation and Properties of Aminosilane Terminated Waterborne Polyurethane

Aminosilane Terminated 수분산 폴리우레탄 코팅 용액의 제조 및 특성

  • Shin, Yong Tak (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Hong, Min Gi (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Choi, Jin Joo (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Lee, Won Ki (Technical Research Institute, Hanjin Chemical Co., LTD) ;
  • Lee, Gyoung Bae (Technical Research Institute, Hanjin Chemical Co., LTD) ;
  • Yoo, Byung Won (Technical Research Institute, Hanjin Chemical Co., LTD) ;
  • Lee, Myung Goo (Nanosphere Co., LTD) ;
  • Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
  • 신용탁 (건양대학교 화공생명학과) ;
  • 홍민기 (건양대학교 화공생명학과) ;
  • 최진주 (건양대학교 화공생명학과) ;
  • 이원기 (한진화학주식회사 기술연구소) ;
  • 이경배 (한진화학주식회사 기술연구소) ;
  • 유병원 (한진화학주식회사 기술연구소) ;
  • 이명구 (나노스피어(주)) ;
  • 송기창 (건양대학교 화공생명학과)
  • Received : 2010.03.29
  • Accepted : 2010.05.23
  • Published : 2010.08.31
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Abstract

NCO terminated polyurethane prepolymers were synthesized from isophorone diisocyanate(IPDI), poly(tetramethyleneglycol)(PTMG) and dimethylol propionic acid(DMPA). Subsequently, aminosilane terminated prepolymers were prepared by capping the NCO groups of polyurethane prepolymers with different moles of aminopropyl triethoxysilane(0~0.02 mole) as a coupling agent. The average particle size of the silylated polyurethane solutions increased with increasing APS content. Also, the prepared coating films showed better thermal stability and pencil hardness than pure waterborne polyurethane.

Isophorone diisocyanate(IPDI), poly(tetramethyleneglycol)(PTMG), dimethylol propionic acid(DMPA)를 출발물질로 하여 NCO terminated prepolymer가 합성되었다. 이 prepolymer의 NCO기를 silane으로 capping하기 위해 0~0.02 mole로 첨가량이 조절된 aminopropyl triethoxysilane(APS)이 첨가되었다. 제조된 용액의 평균 입경은 APS의 첨가량이 증가함에 따라 증가하였다. 또한 제조된 코팅 필름의 연필 경도 및 열적안정성은 순수한 수분산 폴리우레탄보다 우수하였다.

Keywords

Acknowledgement

Supported by : 지식경제부

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