热塑性聚烯烃弹性体的单向形状记忆行为.PDF

第67 卷 第2 期 化 工 学 报 Vol.67 No.2 February 2016 2016 年2 月 CIESC Journal ·661 · 热塑性聚烯烃弹性体的单向形状记忆行为 黄丽媚，郭松，赵骞，谢涛，李伯耿 （浙江大学化学工程与生物工程学院，化学工程联合国家重点实验室，浙江杭州 310027 ） 摘要：以乙烯为单一原料采用串级催化体系制备了乙烯/1- 己烯无规共聚物，具有从60℃到120℃宽的熔融峰，其 储能模量在100 MPa 以下，研究此热塑性弹性体的形状记忆性质。采用DSC 、DMA 等手段定量表征，结果表明， 选择恰当的变形温度，共聚物的形状固定率和形状恢复率可达90%，实现较好的形状记忆性能。 关键词：热塑性；弹性体；无规共聚物；形状记忆；聚烯烃；催化剂；聚合物；碳氢化合物 DOI ：10.11949/j.issn.0438-1157 中图分类号：TQ 072 文献标志码：A 文章编号：0438—1157 （2016 ）02—0661—06 One-way shape memory behavior of thermoplastic polyolefin elastomers HUANG Limei, GUO Song, ZHAO Qian, XIE Tao, LI Bogeng (State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China) Abstract: Thermoplastic polyolefin elastomers which are soft and easy processing have potential usage for non-structural applications. The thermal, mechanical and shape memory properties of this thermoplastic elastomers were investigated with differential scanning calorimetric (DSC) and dynamic mechanic analysis (DMA). The results showed that was important for the better shape memory with both of the shape fixity rate and shape recovery rate up to 90% can be reached by choosing a proper deforming temperature in a broad range of melting temperature. Key words ：thermoplastic; elastomer; random copolymer; shape memory; polyolefin; catalyst; polymers; hydrocarbon 引 言 高分子，其具有一个可逆热转