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 2,4toluene diisocyanate(2,4TDI),poly(butylene adipate) glycol (PBAG) with different molecular weight and 1,4butanediol(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.
出处
《塑料》
CAS
CSCD
2003年第5期61-64,共4页
Plastics
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
shape memory polyurethans
crystallinity of the soft segment regions
hard segment domains
necessary conditions
