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首页> 外文期刊>Polymers for advanced technologies >Tribological performance and thermal behavior of epoxy resin nanocomposites containing polyurethane and organoclay
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Tribological performance and thermal behavior of epoxy resin nanocomposites containing polyurethane and organoclay

机译：含聚氨酯和有机粘土的环氧树脂纳米复合材料的摩擦学性能和热行为

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摘要

A series of epoxy resin nanocomposites modified by polyurethane and organically modified montmorillonite was prepared by effectively dispersing the organically modified montmorillonite in interpenetrating polymer networks (IPNs) of epoxy and polyurethane via the sequential polymeric technique and in situ polymerization. The tribological performance of the resultant EP/PU nanocomposites was investigated by a pin-on-disc tester, and the results showed that adding polyurethane and organically modified clay to the EP matrix had a synergistic effect on improving tribological performance of EP/PU nanocomposites. The morphologies of the worn surface were studied by scanning electron microscopy (SEM) observations, and the results indicated that the mechanism of improving tribological performance of EP/PU nanocomposites was different from that of pure EP or pure EP/PU IPNs. The thermal behavior of these nanocomposites was also investigated by thermogravimeric analysis (TGA), and the results indicated that adding organically modified clay to the matrix remedied the deterioration of the thermal degradation temperature of the interpenetrating networks.
机译：通过顺序聚合技术和原位聚合反应，将有机改性的蒙脱土有效分散在环氧树脂和聚氨酯的互穿聚合物网络（IPNs）中，制得了一系列由聚氨酯和有机改性的蒙脱土改性的环氧树脂纳米复合材料。用针盘测试仪研究了所得的EP / PU纳米复合材料的摩擦学性能，结果表明，向EP基体中添加聚氨酯和有机改性粘土对提高EP / PU纳米复合材料的摩擦学性能具有协同作用。通过扫描电子显微镜（SEM）观察研究了磨损表面的形貌，结果表明，提高EP / PU纳米复合材料摩擦性能的机理与纯EP或纯EP / PU IPN的机理不同。还通过热重分析（TGA）研究了这些纳米复合材料的热行为，结果表明，向基体中添加有机改性的粘土可以消除互穿网络的热降解温度的降低。

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