软段对形状记忆型聚氨酯的性能影响  

The Effect of Soft-segment on the Properties of Shape Memory Polyurethane

作　　者：苑沛霖[1,2] 乌兰 吴尚[1,2] 尹奋平 Yuan Peilin;Wu Lan;Wu Shang;Yin Fenping(School of Chemical Engineering,Northwest Minzu University,Gansu,730030;Key Laboratory for Utility of Environment Friendly Composite and Biomass in universities of Gansu Province,Gansu,730030)

机构地区：[1]西北民族大学化工学院,甘肃730030 [2]甘肃省高校环境友好复合材料及生物质利用省级重点实验室,甘肃730030

出　　处：《当代化工研究》2018年第10期164-166,共3页Modern Chemical Research

基　　金：兰州市城关区科技局2016年度科技项目经费支持(项目编号2016-4-1)

摘　　要：以4,4’-二苯基甲烷二异氰酸酯(MDI)为硬段,1,4-丁二醇(BDO)为扩链剂,分别以分子量1000、2000、3000的聚己内酯(PCL),聚己二酸乙二醇酯(PEAG),聚己二酸丁二醇酯(PBAG)为软段,在硬段含量不变的条件下,合成了一系列的形状记忆型聚氨酯(SMPU)。通过FT-IR,DSC,XRD等测试了其结构,并比较了形状记忆性能,研究表明,分子量2000的PEAG在硬段含量不变的情况下性能最佳,形状恢复率可达到100%。A series of shape memory polyurethanes were synthesized based MDI as the hard segment,butanediol(BDO)as the chain extender,and polycaprolactone(PCL),poly(ethylene adipate)glycol(PEAG),and poly(butylenes adipate)glycol(PBAG)as soft-segment materials with the molecular weights of 1000,2000 and 3000.Under the condition of constant hard content,these samples were investigated by measure of using FT-IR,DSC,XRD and tested shape memory properties.The results show that PEAG polyurethanes with a molecular weight of 2000 has the best performance,and the shape recovery rate can reach 100%.

关 键 词：软段 形状记忆型聚氨酯 形状恢复率 

分 类 号：T[一般工业技术]