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Issue
Korean Chemical Engineering Research,
Vol.49, No.3, 285-291, 2011
실란커플링제 종류 변화가 수분산 폴리우레탄의 특성에 미치는 영향
Effect of Types of Silane Coupling Agents on the Properties of Waterborne Polyurethane
신용탁, 황지현, 홍민기, 최진주, 이원기, 이경배, 유병원, 이명구, 송기창
Isophorone diisocyanate(IPDI), poly(tetramethylene glycol)(PTMG), dimethylol propionic acid(DMPA)를 출발물질로 하여 NCO terminated prepolymer가 합성되었다. 이 prepolymer의 NCO기를 실란으로 capping하기 위해 다양한 실란커플링제인 methyltrimethoxysilane(MTMS), glycidoxypropyl trimethoxysilane(GPTMS), methacryloxypropyl trimethoxysilane(MPTMS), aminopropyl triethoxysilane(APS)이 첨가되었다. 제조된 용액의 평균 입경은 실란커플링제가 첨가되 면서 증가하였다. 또한 실란커플링제인 GPTMS, MPTMS, APS의 첨가는 코팅 막의 연필경도를 향상시킬 수 있었으나, MTMS의 첨가는 코팅 막의 연필경도를 향상시킬 수 없었다.
NCO terminated polyurethane prepolymers were synthesized from isophorone diisocyanat(IPDI), poly(tetramethylene glycol)(PTMG) and dimethylol propionic acid(DMPA). Subsequently, waterborne polyurethanes were prepared by capping the NCO groups of polyurethane prepolymers with different types of silane coupling agents, such as methyltrimethoxysilane(MTMS), glycidoxypropyl trimethoxysilane(GPTMS), methacryloxypropyl trimethoxysilane (MPTMS) and aminopropyl triethoxysilane(APS). The average particle size of the waterborne polyurethane solutions was increased by adding silane coupling agents. Also, the coating films prepared from GPTMS, MPTMS and APS, exhibited better pencil hardness than those from pure waterborne polyurethane. On the other hand, the coating films from MTMS did not show an improved pencil hardness than those from pure waterborne polyurethane.
Keywords: Waterborne Polyurethane; Methyltrimethoxysilane; Glycidoxypropyl Trimethoxysilane; Methacryloxypropyl Trimethoxysilane; Aminopropyl Triethoxysilane
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[Cited By]
  1. Shin YT, Hong MG, Kim BS, Lee WK, Yoo BW, Lee MG, Song KC, Korean Chemical Engineering Research, 50(2), 191, 2012
  2. Hong MG, Kim BS, Lee YW, Song KC, Korean Chemical Engineering Research, 50(3), 427, 2012
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