通过改变聚氨酯的催化剂 ,制备出不同凝胶顺序的增塑聚氨酯 /聚甲基丙烯酸缩水甘油酯同步互穿网络。采用 FT- IR法跟踪网络形成的动力学。所制得的不同凝胶顺序的样品呈现完全相反的物理和力学性能。聚氨酯先凝胶的 SIN样品是透明的 ,质地很脆 ;而聚甲基丙烯酸缩水甘油酯先凝胶的样品为不透明的 ,具有很好的弹性。通过透射电子显微镜 (TEM)和动态力学分析法 (DMA) ,从不同的侧面 ,对它们完全相反的性能作出了解释 By changing the catalyst of polyurethane, different gel sequence plasticized polyurethane / polyglycidyl methacrylate interpenetrating networks were prepared. The FT-IR method was used to track the dynamics of network formation. The samples prepared in different gel sequences presented the exact opposite physical and mechanical properties. SIN samples of polyurethanes gel first are transparent and brittle in texture, while samples of polyglycidylmethacrylate gel first are opaque and have good elasticity. Through the transmission electron microscope (TEM) and dynamic mechanical analysis (DMA), from the different sides, their exact opposite performance has been explained