含噁唑烷酮基聚氨酯弹性体的合成

Synthesis of Polyurethane Elastomers Containing Oxazolidone Group

简述了采用环氧树脂与聚氨酯预聚物制备含口恶唑烷酮基团的聚氨酯弹性体的合成方法与固化工艺 ,并对影响因素进行了分析 ,初步确定了较佳工艺条件为在 15 0℃固化 1h。对用预聚体、含环氧基团的杂环化合物TGC、3,3′ 二氯 4 ,4′ 二氨基二苯甲烷等为原料制得的含口恶唑烷酮基团的聚氨酯弹性体进行了探索试验 ,发现TGC的加入能改善聚氨酯弹性体的耐热老化性能。

The synthetic process of polyurethane elastomers containing oxazolidone group are brief introduced. The elastomer was prepared from epoxy and NCO-terminated polyurethane prepolymer. The influencing factor on the preparation is discussed. The optimal cure condition is 1 hour at 150℃?And a polyurethane elastomer based on the polyurethane prepolymer, TGC, MOCA, etc. was also exploringly synthesized. The results show that the addition of TGC can improve the heat aging property of polyurethane elastomer.