聚合物基减摩耐磨复合材料研究

利用4，4’-二氨基二苯甲烷(DDM)、环氧树脂(E-51)和改性剂A对双马来酰亚胺(BMI)树脂进行增韧改性，通过分析比较浇铸体的力学性能和耐热性能确定了改性树脂的最佳配方。并将此改性树脂与超高分子量聚乙烯(UHMW-PE)粉末进行共混，加入减摩耐磨填料，采用模压成型工艺制备了减摩耐磨复合材料，确定了模压成型工艺参数。测试了材料在不同温度的摩擦磨损性能，表明在合适的使用温度下具有优良的耐摩擦磨损性能。并运用扫描电镜(SEM)对材料磨痕进行了观察，探讨了摩擦磨损机理。

Study on Polymer Matrix Antifriction and Wear-resitance Composites

Bismaleimide(BMI) resin was modified by diamine(DDM),epoxy resin(E-51) and modifying agent A in this research. The best solution was determined by comparing the mechanics properties and thermal properties of the castings. The modified resin was bended with ultra high molecular weight polyethylene (UHMW-PE) powder,and filled with antifriction fillers which were prepared by using the mould pressing technology. The mould pressing parameters were decided. The friction and wear properties of materials at different temperature were tested and the result showed that this material has excellent friction and wear performance at the appropriate temperature. The appearance of abrasion marks was observed using the scanning electron microscope (SEM) and the mechanism of friction and wear was further discussed.