自乳化法制备水性聚氨酯丙烯酸酯核壳复合乳液  

Preparation of Waterborne Polyurethane-Acrylic Core-Shell Hybrid Emulsions by Self-Emulsifying Polymerization

作　　者：王青尧[1] 葛圣松[1] 赵玉花[1] 李家园[1] 

机构地区：[1]山东科技大学化学与环境工程学院,山东青岛266510

出　　处：《化学推进剂与高分子材料》2009年第4期43-45,共3页Chemical Propellants & Polymeric Materials

摘　　要：通过自乳化法制备了丙烯酸改性的水性聚氨酯复合乳液。FT-IR和TEM测试表征,聚氨酯丙烯酸酯乳液混合均匀,粒子呈核壳结构。研究结果表明:改性后聚氨酯的耐热性有一定程度提高。当n(甲基丙烯酸甲酯):n(聚氨酯)在1.5附近时,断裂伸长率、硬度及耐水性等综合指标最佳。Waterborne polyurethane（PU） hybrid emulsion modified with methyl methacrylate（MMA） was synthesized by self-emulsifying method. The FT-IR and TEM results show that the polyurethane-acrylic emulsions are uniformly mixable, and the particles are presented in core-shell structure. The study results show that thermal resistance of modified polyurethane increases in some degree. Comprehensive indexes of elongation at break, hardness and water resistance etc. are optimum when the molar ratio of MMA to PU is about 1.5.

关 键 词：自乳化法 聚氨酯乳液 核壳 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]