环氧树脂改性MDI型聚氨酯弹性体的性能研究  

Study on Properties of MDI Polyurethane Elastomer Modified by Epoxy Resin

作　　者：甄建军[1] 翟文[1] 唐志勇 

机构地区：[1]中国兵器工业集团第五三研究所,济南250031 [2]济南普恩聚氨酯有限公司,250032

出　　处：《聚氨酯工业》2012年第5期31-34,共4页Polyurethane Industry

基　　金：国防装备预研项目(4406720627)

摘　　要：采用聚己二酸乙二醇丙二醇酯(PEPA)和4,4'-二苯基甲烷二异氰酸酯(MDI)为原料合成了聚氨酯预聚体,在预聚体固化剂中掺入环氧树脂,制备了环氧树脂改性MDI型聚氨酯弹性体,并对弹性体的结构和性能进行表征。结果表明,环氧树脂改性MDI型聚氨酯弹性体中存在噁唑烷酮结构,提高了弹性体的热分解温度和耐热性能,但弹性体的动态性能变差,微相分离程度变弱。Polyurethane prepolymer was synthesized using PEPA and MDI. Epoxy resin was added in the pre- polymer during the solidifying process, then the polyurethane elastomer of epoxy-modified based on MDI was pre- pared. Elastomer structure and performance was characterizated. It indicated that the oxazolidinone was found in the modified polyurethane elastomer. The decomposition temperature and heat-resistance property of polyurethane e- lastomer was improved, but the dynamic property and microphase separation were decreased.

关 键 词：聚氨酯弹性体 环氧树脂 改性 热分解温度 耐热性能 动态性能 微相分离 

分 类 号：TQ334[化学工程—橡胶工业]