凝胶顺序对增塑PU/PGMA同步互穿网络力学性能的影响  

THE EFFECT OF GELATION SEQUENCE ON THE MECHANICAL PROPERTIES OF PLASTICIZED POLYURETHANE-POLY(GLYCIDYL METHACRYLATE)SIMULTANEOUS INTERPENETRATING NETWORK

作　　者：刘轶群[1] 高同斋[1] 陈福泰[1] 多英全[1] 谭惠民[1] 

机构地区：[1]北京理工大学化工与材料学院,北京100081

出　　处：《高分子材料科学与工程》2001年第1期129-132,共4页Polymer Materials Science & Engineering

摘　　要：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 。The simultaneous interpenetrating network sample with different gelation sequences based on plasticized polyurethane(PU) and poly(glycidyl methacrylate)(PGMA) were prepared by changing the PU catalyst. The kinetics of network formation was monitored by FT IR. The obtained samples with different gelation sequences show opposite physical and mechanical properties. The sample with PU gelling first is transparent and brittle, while the sample with PGMA gelling first is opaque and high elastic. The TEM and DMA methods were used to investigate the microstructures of these samples from different aspects to explain their completely different properties.

关 键 词：聚氨酯 互穿聚合物网络 力学性能 凝胶顺序 甲基丙烯酸缩水甘油酯 动力学 

分 类 号：O633.22[理学—高分子化学]