温敏聚氨酯的结构特点及其应用前景  

Structural Characteristics and Applications of Thermal Sensitive Polyurethane

作　　者：周虎[1] 陈东初[1] 曾坚贤[1] 寻金锭[1] 岳坤亮[1] 

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201

出　　处：《胶体与聚合物》2011年第2期94-96,共3页Chinese Journal of Colloid & Polymer

基　　金：国家自然科学基金(21006022;20976040);湖南科技大学博士启动基金资助项目(E51086)

摘　　要：温敏聚氨酯通常具有典型的嵌段和微相分离结构,其膜的透汽、透湿性、内部孔洞尺寸、机械性能等在软段相转变温度前后会发生突跃性变化,表现出独特的温敏特性。温敏聚氨酯的独特结构特征以及温度响应特性使其在纺织材料、食品包装材料、农用大棚薄膜、分离膜、工业控制反应器等领域显示了广阔的应用前景。According to the micro-structure of thermal sensitive polyurethane（TSPU） and its thermal responsive characteristics,the TSPU applications were introduced.The TSPU shows an obvious segmented structure and the main chains are constitute of soft segment and hard segment.When the temperature rises above the phase transition temperature of soft segment（defined as switch temperature,Ts）,the size of free volume holes,the water vapor permeability and mechanical properties change remarked,showing thermal sensitivities.Because of the particular structure and thermal sensitive,the TSPUs show wide applications in breathable textile,packaging,agricultural film,separation,controllable reaction and so on.

关 键 词：聚氨酯 温敏特性 微观结构 应用 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]