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Search / Korean Journal of Chemical Engineering
Korean Chemical Engineering Research,
Vol.49, No.4, 411-416, 2011
수분산 폴리우레탄의 물성에 미치는 Pentaerythritol Triacrylate의 첨가 효과
Effect of Addition of Pentaerythritol Triacrylate on the Properties of Waterborne Polyurethane
신용탁, 홍민기, 최진주, 이원기, 유병원, 이명구, 송기창
Isophorone diisocyanate(IPDI), polycarbonate diol(PCD), dimethylol propionic acid(DMPA)를 출발물질로 하여 NCO terminated prepolymer가 합성되었다. 이 prepolymer의 NCO기를 아크릴 단량체로 capping하기 위해 0~0.024 mole로 첨가량이 조절된 pentaerythritol triacrylate (PETA)가 첨가되었다. 제조된 acrylic terminated polyurethane 용액의 평균 입경은 PETA의 첨가량이 증가함에 따라 증가하였다. 또한 제조된 코팅 필름의 연필경도 및 내마모성은 순수한 수분산 폴리우레탄보다 우수하였다.
NCO terminated polyurethane prepolymers were synthesized from isophorone diisocyanat(IPDI), polycarbonate diol(PCD) and dimethylol propionic acid(DMPA). Subsequently, acrylic terminated prepolymers were prepared by capping the NCO groups of polyurethane prepolymers with different moles of pentaerythritol triacrylate (0~0.024 moles) as a acrylate monomer. The average particle size of the acrylic terminated polyurethane solutions was increased with increasing PETA contents. Also, the prepared coating films showed better abrasion resistance and pencil hardness than pure waterborne polyurethane.
Keywords: Waterborne Polyurethane; Pentaerythritol Triacrylate; Acrylic Terminated Polyurethane
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