交联剂用量对聚氨酯乳液膜性能的影响  

The Effects of the Amount of Crosslinking Agent on the Properties of PU Emulsion Film

作　　者：王念贵[1] 袁锐锋[1] 邓丽娟[1] 陈福和[1] 

机构地区：[1]湖北大学化学与材料科学学院,武汉430062

出　　处：《聚氨酯工业》1998年第4期16-18,共3页Polyurethane Industry

摘　　要：由聚醚、甲苯二异氰酸酯、二羟甲基丙酸及三羟甲基丙烷（TMP）等为原料制备交联型聚氨酯乳液。乳液胶膜的性能受交联剂TMP用量影响。交联剂用量越大，胶膜的玻璃化温度越高、断裂伸长率越小、在甲苯中溶胀性越小。当交联剂的摩尔分数约为3％时，拉伸强度最大，吸水率和浸水失重率最小。The crosslinking polyurethane emulsions were prepared from polyether,stoluene diisocyanate, dimethanol propionic acid, trimethanol propane (TMP), etc. The properties of emulsion film are affected by the amount of crosslinking agent TMP. The more the amount of crosslinking agent, the higher glass-transition temperature, the smaller the elongation and the lower the swellability in methylbenzene. When the molar percentage of crosslinking agent is about 3 %,the tensile strength is maximum,the water absorption and the losing weight in water is minimum.

关 键 词：交联剂 聚氨酯乳液 交联 性能 乳液共聚 

分 类 号：TQ323.807[化学工程—合成树脂塑料工业]