以甲苯二异氰酸酯预聚体与聚醚反应 ,合成了一系列高温固化的聚醚氨酯 ,用于与体型聚甲基丙烯酸甲酯的互穿聚合物网络化研究 ,并对所获得的IPN体系阻尼性能进行了测试 .动态力学性能检测结果表明 :聚氨酯软段中—OH与—NCO的比例、软硬段的相对含量以及交联密度 ,对体系的相容性及阻尼性能都有显著影响 .检测结果还表明 ,以上所获得的IPN都有明显的拓宽玻璃化温区的作用 A series of high temperature curing polyether urethanes were synthesized by the reaction of toluene diisocyanate prepolymer with polyether. The interpenetrating polymer networks with body size polymethylmethacrylate were studied. The obtained IPN system The results of dynamic mechanical tests show that the ratio of -OH to -NCO, the relative content of soft and hard segments and the crosslink density in the soft segment of polyurethane have a significant effect on the compatibility and damping properties of the system. The test results also show that the IPN obtained above has a clear role in widening the glass transition temperature