形状记忆聚氨酯的结构与性能研究  

Structure and Properties of Shape Memory Polyurethane

作　　者：严冰[1] 邓剑如[1] 

机构地区：[1]湖南大学化学化工学院,湖南长沙410082

出　　处：《塑料》2003年第5期61-64,共4页Plastics

摘　　要：以2,4 甲苯二异氰酸酯(2,4 TDI),不同分子量的聚己二酸丁二醇酯(PBAG)和1,4 丁二醇(BDO)为原料合成了具有形状记忆功能的聚氨酯材料。通过DSC、弯曲实验和力学实验研究了形状记忆聚氨酯的性能,发现软段高度结晶和硬段聚集形成硬段微区是其具有较好形状记忆性能的必要条件。Shape memory polyurethans were synthesized by 2,4toluene diisocyanate(2,4TDI),poly(butylene adipate) glycol (PBAG) with different molecular weight and 1,4butanediol(BDO).The properties of polyurethane were studied using DSC,bending and mechanical tests.It was found that the high crystallinity of the soft segment regions and the formation of hard segment domains are the necessary conditions for polyurethanes with good shape memory behavior.

关 键 词：形状记忆聚氨酯 结构 性能 软段结晶 硬段微区 高分子材料 结晶度 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TB381[一般工业技术—材料科学与工程]