离子聚合物邻接交联端羟基丁腈橡胶/聚醚基聚氨酯弹性体的制备与性能（英文）  

Preparation and properties of ionic polymer adjacency cross-linked poly(hydroxyl terminated nitrile rubber/polyether glycol) urethane elastomer

作　　者：赵天宝[1] 蒋玉湘[1] 赵洪祥[1] 罗明艳[1] 周京福 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：《合成橡胶工业》2017年第4期326-326,共1页China Synthetic Rubber Industry

基　　金：Supported by National Natural Science Foundation of China(21676150)

摘　　要：以端羟基丁腈橡胶和聚醚二醇、甲苯二异氰酸酯为原料制备出预聚体,加入混合扩链剂氢氧化甲基丙烯酸锌盐、二甲硫基甲苯二胺和过氧化二异丙苯,在聚氨酯固化过程中氢氧化甲基丙烯酸锌盐在过氧化二异丙苯的引发下发生自由基聚合形成离子聚合物,同时离子聚合物自由基活性链与聚氨酯软段结构中的不饱和双键反应形成交联,制备了离子聚合物邻接交联型聚氨酯弹性体。研究了离子聚合物对聚氨酯氢键化作用和高温力学性能的影响。结果表明,随温度升高聚氨酯氢键化NH官能团的伸缩振动谱带逐渐向高波数方向移动,离子聚合物邻接交联型聚氨酯的氢键化作用破坏较慢,复合材料的高温拉伸强度保持率相对较高。With an increase in temperature, the hydrogen bondings interaction, associated with the mechanical performance of polyurethane （ PU）, was damaged rapidly. Improvement of the mechanical properties at high temperature and the heat resistance usually were the key technologies for PU industry. It was verified that adjacency crosslinking in soft segment matrix was a practical approach to improve the thermal stability for the PU elastomers. In this paper, a new type of adjacency cross-linked PU with ionic polymer instead of the traditional small molecular crosslinking agent, was prepared for the first time.

关 键 词：离子聚合物 聚氨酯弹性体 邻接交联 氢键化 耐高温性能 

分 类 号：TQ334.1[化学工程—橡胶工业]