水性聚氨酯的改性研究  

Study on the Properties of Modified Water-Borne Polyurethane

作　　者：王平华[1] 伍胜利[1] 刘春华[1] 

机构地区：[1]合肥工业大学化工学院高分子材料与工程系,230009

出　　处：《聚氨酯工业》2004年第5期26-29,共4页Polyurethane Industry

摘　　要：分别采用丙烯酸酯、环氧树脂合成 2种不同的改性水性聚氨酯 ,比较了改性前后及 2种不同的改性水性聚氨酯在乳液、涂膜性能及粘接性能方面的差异。结果表明 ,改性后的水性聚氨酯综合性能明显提高 ,其中环氧树脂改性水性聚氨酯 (EPU)在固化交联后涂膜的耐水、耐溶剂及力学性能又明显好于丙烯酸酯改性水性聚氨酯 (PUA) ,其粘接强度与溶剂型聚氨酯相当 ;Water-borne polyurethane dispersions(WPU)were prepared. The WPUs were modified with acrylic and epoxide resin E-44 respectively. Dispersions, cast films and adhesive strength properties of WPUs and two types of modified ones are compared, the results showed that :emulsion and cast film of modified WPUs present higher performance properties, and E-44 modified ones(EPU) have better properties than PUA in water and organic solution resistance, mechanic properties and adhesive strength, but its emulsions stability not as good as PUA hybrid emulsions.

关 键 词：水性聚氨酯 改性 丙烯酸酯 环氧树脂 合成 固化交联 过硫酸钾 

分 类 号：TQ317[化学工程—高聚物工业]