热收缩聚氨酯材料的研究进展  

Recent progress in thermo-stimulative shape memory polyurethane materials

作　　者：王林生[1] 丁雪佳[1] 何金迎[1] 苏磊静[1] 李熙然[1] 雷晓慧[1] 

机构地区：[1]北京化工大学,北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《储能科学与技术》2013年第2期126-131,共6页Energy Storage Science and Technology

基　　金：科技部科技人员服务企业行动项目(2009GJA1004508)

摘　　要：阐述了热收缩聚氨酯(TPU)材料的记忆原理及具有记忆功能的材料结构,并介绍了描述聚合物热收缩行为的相关参数和数学模型。热收缩TPU材料具有软硬段的两相微区或交联结构,通过冷拉或热拉赋形,材料在回复温度恢复原来的初始形状,其热收缩行为可用黏壶模型表述,介绍了其相关参数。综述了TPU热收缩材料的研究现状,包括软硬段相分离结构、交联结构的热收缩聚氨酯及其复合材料。展望了热收缩聚氨酯材料的未来发展趋势,指出需提高热收缩TPU材料回复的准确性和回复力以及开发功能感应性和满足特殊领域使用要求的新型TPU材料。This paper introduces the mechanism and structure of shape memory polyurethane materials, and characteristic parameters and associated mathematical models for describing the behaviour of the thermally shrinkable polymeric materials. Recent progress is reviewed on the shape memory polyurethane materials, covering phase separation of the soft and hard segments, cross-linked thermally shrinkable polyurethane and its composite materials. Finally, recommendations are put forward for further research in the area, including improve the accuracy of response and resilience, as well as functional sensor type, and satisfy some of the performance requirements of the specific areas.

关 键 词：热收缩 聚氨酯 参数模型 交联 相分离 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]