실란커플링제 종류 변화가 수분산 폴리우레탄의 특성에 미치는 영향 (Effect of Types of Silane Coupling Agents on the Properties of Waterborne Polyurethane)

서지정보

· 발행기관 : 한국화학공학회
· 수록지 정보 : Korean Chemical Engineering Research(HWAHAK KONGHAK) / 49권 / 3호 / 285 ~ 291페이지
· 저자명 : 신용탁, 송기창, 황지현, 홍민기, 최진주, 이원기, 이경배, 유병원, 이명구

초록

Isophorone diisocyanate(IPDI), poly(tetramethylene glycol)(PTMG), dimethylol propionic acid(DMPA)를 출발물질로하여 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 첨가되면서 증가하였다. 또한 실란커플링제인 GPTMS, MPTMS, APS의 첨가는 코팅 막의 연필경도를 향상시킬 수 있었으나,MTMS의 첨가는 코팅 막의 연필경도를 향상시킬 수 없었다.

영어초록

NCO terminated polyurethane prepolymers were synthesized from isophorone diisocyanate(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.

참고자료

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