微相分离促进剂对MDI型聚氨酯弹性体的耐热性能影响研究  

Studies on influence of microphase separation to the heat-resistance property of polyurethane based on MDI

作　　者：甄建军[1] 翟文[1] 

机构地区：[1]中国兵器工业集团第五三研究所,山东济南250031

出　　处：《弹性体》2011年第4期46-49,共4页China Elastomerics

基　　金：国防科技预研项目

摘　　要：在聚氨酯弹性体固化过程中添加微相分离促进剂,通过差示扫描量热分析(DSC)和动态力学性能测试(DMA)表明,微相分离促进剂的加入提高了4,4′-二苯基甲烷二异氰酸酯(MDI)弹性体的微相分离程度;通过不同温度下的热失重分析(TGA)和力学性能高温保持率对比分析表明,添加了微相分离促进剂的聚氨酯弹性体耐热性能得到了提高。Microphase separation promoter was added in the polyurethane based on MDI before solidifying process.It indicated that the degree of microphase separation of MDI increased because the microphase separation promoter was added by the DSC and DMA;it indicated that the heat-resistance property of polyurethane based on MDI increases because of the microphase separation promoter by the TGA under the different temperature and the mechanics performance maintenance rate at high temperature.

关 键 词：聚氨酯弹性体 微相分离 耐热性能 

分 类 号：TQ334.1[化学工程—橡胶工业] TQ323.8