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环氧树脂基复合材料在水润滑过程中的摩擦学性能
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Abstract:
研究了端氨基聚脲增韧环氧树脂基复合材料在水润滑条件下的摩擦磨损性能，利用扫描电子显微镜和激光扫描共聚焦显微镜对环氧树脂磨损后的表面形貌进行观察与分析。结果表明：聚脲/环氧树脂复合材料在水润滑条件下表现出良好的耐磨性能，摩擦系数和磨损质量损失都比纯环氧树脂低；聚脲共聚体的加入显著提高了复合材料的韧性。聚脲/环氧树脂复合材料中颗粒的分布比较均匀，而且形状比较规则，磨损表面部分粒子发生了塑性变形，聚脲颗粒的加入，提高了复合材料的耐磨性。
Friction and wear behavior properties of epoxy resin matrix composites toughened with polyu-rethane were investigated under the condition of water lubricated sliding. The worn surface morphologies of epoxy resin and the composite were observed and analyzed by scanning electron microscope (SEM) and laser scanning confocal microscope (CLSM). It has been found that the epoxy/ployurea composite exhibits favorable wear resistance under water lubricated sliding. Fric-tional coefficients and wear mass losses of Polyurea/Epoxy composites were all lower than that of epoxy samples. The toughness was improved with the addition of polyurea copolymer. The polyurea particles distributed uniformly in epoxy/polyurea composite substrate. In addition, plastic defor-mation of some polyurea particles occurred on the worn surface of the epoxy/polyurea composite. The wear resistance was improved with the addition of polyurea particles.
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