聚氨酯脲微相分离程度及性能研究  

Effects of micro-phase separation degree and properties of Polyurethane-Urea

作　　者：罗明艳[1] 李再峰[1] 

机构地区：[1]青岛科技大学生态化工国家重点实验室培育基地,山东青岛266042

出　　处：《弹性体》2017年第2期19-23,共5页China Elastomerics

基　　金：国家自然科学基金资助项目(21676150;21176126)

摘　　要：以端羟基聚丁二烯丙烯腈(HTBN)和聚醚多元醇(N210)为软段,以甲苯二异氰酸酯(TDI)和异佛尔酮二异氰酸酯(IPDI)以及4,4′-二氨基-3,3′-二氯二苯甲烷(MOCA)和二甲硫基二胺基甲苯(DMTDA)为硬段,制备了一系列聚氨酯脲(PUU)弹性体。采用傅里叶变换红外光谱分析(FT-IR)、热重分析(TGA)、动态黏弹(DMA)、材料拉伸测试机等测试手段对合成的PUU进行了结构与性能表征,研究了聚氨酯体系中各组分对弹性体微相分离程度及各种性能的影响。结果表明,对称性较高且分子结构中含有刚性苯环的扩链剂和异氰酸酯有利于微相分离程度的提高。With hydroxyl-terminated polybutadiene acrylonitrile（HTBN）and polyether polyol（N210）as soft segment,toluene diisocyanate（TDI）,isophorone diisocyanate（IPDI）,4,4′-diamino 3,3′-dichloro diphenyl methane（MOCA）and dimethyl sulfonium 2amino toluene（DMTDA）as hard segment,a series of polyurethane urea elastomer were prepared.Through Fourier transform infrared spectroscopy（FTIR）,Thermogravimetric analyzer（TGA）,Dynamic viscoelastometer（DMA）and dynamic viscoelastic materials testing,the structures and properties were charactered.And effects of structure on micro-phase separation and properties of Polyurethane-Urea were studied.Results showed that molecular structure with high symmetry containing benzene ring chain extender and rigidity isocyanate was beneficial to the improvement of the micro phase separation degree.

关 键 词：聚氨酯脲 微相分离 软段 硬段 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]