一类 IPN 材料的抗蚀耐磨性能分析  

Cavitation resistance and abrasion resistance of IPN in water

作　　者：梁川[1] 吴持恭[1] 

机构地区：[1]四川联合大学高速水力学国家实验室

出　　处：《水利学报》1997年第12期79-82,共4页Journal of Hydraulic Engineering

基　　金：国家自然科学基金

摘　　要：本文从分子水平上对环氧树脂／聚氨酯（ＥＰ／ＰＵ）互穿形成的半ＩＰＮ材料的玻璃化转变温度、阻尼性能、力学性能、表面与断口形态特征进行了微相结构分析．结果表明：这类ＩＰＮ材料通过分子链的形变吸收、传递和耗散外应力，延缓了网络的疲劳破坏，因而具有良好的抗蚀耐磨性能．he paper illustrates the analysis of some characteristics of the epoxy resin/polyurethane semi IPN, such as glass transtion behavior, damping and mechanical properties as well as morphology by the DMA (Dynamic Mechanical Analysis) method and SEM (Scanning Electron Mirroscope). The results show that the semi IPN has excellent properties for resisting cavitation erosion damage due to its moleclar chain change, while the semi IPN could absorb/transmit the force and delay the tired damage of the networks. Moerover, when the weight ratio of EP/PU is 70/30, the compatibility of the system is the best and the maxiumum value of tgσ is about 1. The main factors effecting the strongth against erosion and abrasion are the proportion, chemical and physical structure of the interpenetrating polyurethane.

关 键 词：互穿网络聚合物 抗蚀 耐磨 高聚物 泄水建筑物 

分 类 号：TV65[水利工程—水利水电工程] TV47