不同种类催化剂对RIMPUU微相分离结构及性能的影响  

EFFECT OF DIFFERENT CATALYSTS ON THE MICROPHASE SEPERATION STRUCTURE AND PROPERTIES OF RIM PUUS

作　　者：毛立新[1] 潘碧莲[1] 

机构地区：[1]北京化工大学材料科学工程学院

出　　处：《高分子材料科学与工程》1999年第4期75-77,共3页Polymer Materials Science & Engineering

摘　　要：借助ＤＳＣ、ＴＥＭ、ＤＭＡ以及拉伸实验等现代测试手段，研究了不同种类催化剂对ＲＩＭＰＵＵ制品微相分离结构及性能的影响。实验结果表明，ＤＢＴＤＬ、ＴＤ及ＵＬ－２９３种催化剂所催化的ＲＩＭＰＵＵ体系的微相分离程度有ＴＤ催化体系＞ＵＬ－２９催化体系＞ＤＢＴＤＬ催化体系的趋势，并且ＤＢＴＤＬ的催化效果最佳。可以说，ＤＢＴＤＬ是ＲＩＭＰＵＵ反应体系最理想的催化剂。In RIM PUU systems, catalysts always take an important part. The effect of different catalysts on microphase separation structure and properties of RIM PUU samples was studied by means of a series of modern analytical technologies such as DSC, TEM, DMA and tensile experiment. As a result, the degree of microphase separation of different RIM PUU systems had a trend that was TD system>UL 29 system>DBTDL system. All experimental datas indicate that DBTDI system not only has smaller degree of microphase separation, but also has better mechanicla property, and this recommends that the catalytic effect of DBTDL is the best and it could be the idealest catalyst for RIM PUU systems.

关 键 词：聚氨酯 脲 微相分离 RIM PUU 结构 性能 催化剂 

分 类 号：O631.11[理学—高分子化学] O643.364[理学—化学]