高性能透明聚氨酯弹性体的合成研究  

Studies on Synthesis of High Performance Transparent Polyurethane Elastomer

作　　者：张晓华[1] 曹亚[1] 

机构地区：[1]高分子材料工程国家重点实验室,四川大学高分子研究所成都610065

出　　处：《塑料工业》2002年第6期8-11,共4页China Plastics Industry

摘　　要：以聚氧四亚甲基二醇、异佛尔酮二异氰酸酯、 1,4 丁二醇和不同的催化剂合成了透明聚氨酯弹性体 ,研究了合成方法、催化剂种类、异氰酸酯指数R、固化时间以及固化温度对该弹性体的力学性能、光学透明性、反应程度和热稳定性的影响。结果表明 :软段摩尔质量及硬段扩链剂的改变对体系的摩尔质量影响较小 ,但使力学性能有较大变化。采用复合催化剂 ,一步法制备的聚氨酯弹性体具有较好的综合力学性能、优良的热稳定性 ;与基体树脂聚碳酸酯的粘接性好 ,复合材材的光学透明性优良 ;Transparent polyurethane elastomers were synthesized from isophorone diisocyanate,polyoxytetramethylene glycol,1,4 butanediol(BD) and different catalysts The effects of the synthetic method,catalyst,isocyanate index( R ),and curing time and temperature on the properties of the prepared elastomer(PU)were studied The results showed that the molecular weight of PU was influenced little by the change of soft segment and hard segment,but the mechanical properties of PU changed obviously PU synthesized by one step method at the curing temperature of 120 ℃,in which composite catalyst(DBTDL+K or Sn oct+K)was used,exhibited good mechanical properties,light transparency and thermal stability

关 键 词：聚氧四亚甲基二醇 异佛尔酮二异氰酸酯 高性能 透明聚氨酯弹性体 合成 研究 

分 类 号：TQ334[化学工程—橡胶工业]