二胺固化MDI型聚氨酯弹性体  

Preparation of Diamine Curing MDI-Based Polyurethane Elastomer

作　　者：刘翠平[1] 

机构地区：[1]山西省化工研究所太原,030021

出　　处：《聚氨酯工业》2012年第5期38-40,共3页Polyurethane Industry

摘　　要：采用聚四氢呋喃二醇(PTMG)和二苯基甲烷二异氰酸酯(MDI)合成预聚物,经3,3'-二氯-4,4'-二苯基甲烷二胺(MOCA)扩链合成了聚氨酯弹性体,测定了其物理性能和高温性能。结果表明,该体系弹性体具有良好的物理机械性能,尤其是其高温性能更加突出,120℃时撕裂强度保持率可达40%,用该体系制得的矿用磨盘,使用寿命是甲苯二异氰酸酯(TDI)体系的3倍以上,显示出良好的应用前景。The prepolymer was synthetized from polytetrahydrofuran diol （PTMG） and diphenyl methane diiso- cyanate （MDI） and then extended by 3,3＇-dichloro-4,4＇- diphenylmethane diamine （MOCA） to obtain the polyu- rethane elastomer（PUE）. The physical properties and high temperature performances of the PUE were studied. The results showed that the PUE had good physical and mechanical properties, high temperature performances, reten- tion percent of tear strength for the PUE could be up to 40% at 120 ℃. Service life of the mine abrasive disc pre- pared from the PUE was 3 times more than TDI PUE system and had good application prospects.

关 键 词：PTMG MDI MOCA 聚氨酯弹性体 耐温性能 

分 类 号：TQ334.1[化学工程—橡胶工业]