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利用改变组成比、聚氨酯ＰＵ软段（端羟基聚环氧氯丙烷）的分子量、Ｒ值（ＮＣＯ／ＯＨ）、异氰酸酯和两网络各自交联剂含量合成出５个系列的聚环氧氯丙烷聚氨酯／聚甲基丙烯酸甲酯互穿聚合物网络（ＰＵ／ＰＭＭＡＩＰＮ），利用ＩＰＮ中交联、互穿、缠结程度的不同，并结合ＤＳＣ、ＴＥＭ、动态粘弹谱讨论了ＩＰＮ力学性能。
Five series of polyepichlorohydrin polyurethanes were synthesized by changing the composition ratio, the molecular weight of PU soft segment (hydroxyl terminated polyepichlorohydrin), the R value (NCO / OH), the isocyanate and the content of crosslinker in the two networks. / Polymethylmethacrylate interpenetrating polymer network (PU / PMMAIPN). The mechanical properties of IPN were discussed by using DSC, TEM and dynamic viscoelasticity.