친환경 1액경화형 하이브리드 폴리우레탄 탄성체의 열적 물리적 특성

Abstract

In this study, the one-component curable polyurethane resin was manufactured using blocked isocyanate and hybrid technology.

To prepare the one-component curable hybrid polyurethane, silica hybrids including hydroxyl group was synthesized, and the size, shape and distribution of hybrid particle in polyurethane resin were confirmed. Then the dissociation property, mechanical property and molding property of blocked isocyanate were investigated.

The dissociation property of blocked isocyanate in one-component curable polyurethane became better as the heating temperature and treatment time increased. The synthesized silica hybrid had spherical appearance and size of 23~27 nm in diameter, and it was observed that the hybrid particles were homogeneously distributed in polyurethane structure.

In the case of hybrid polyurethane, the mechanical property, anti-abrasion and thermal property were higher than those of general polyurethane, and it was observed that when the plasticizer was introduced, the mechanical property was maintained.