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采用碳纤维、芳纶浆粕和硫酸钙晶须为增强体,通过模压成型工艺制备了5种不同几何尺寸纤维体系的聚合物基复合材料。利用定速摩擦试验机和扫描电子显微镜研究了不同几何尺寸的纤维体系对聚合物基复合材料在无润滑条件下摩擦磨损性能和表面形貌的影响,以求探究聚合物基复合材料的摩擦磨损机理。结果表明:随着增强体系由单一纤维到混杂纤维,材料的摩擦系数和耐磨性先增大后减小;磨擦后表面逐渐疏松多孔,磨损率增大;适宜混杂比的纤维增强聚合物基复合材料的摩擦磨损性能较优。
Carbon fiber, aramid pulp and calcium sulfate whiskers were used as reinforcements. Five different polymer matrix composites with different geometries were prepared by compression molding. The friction and wear properties and surface topography of polymer-based composites under non-lubricated conditions were studied by a fixed-speed friction tester and a scanning electron microscope in order to investigate the friction and wear of the polymer-based composites mechanism. The results show that the friction coefficient and wear resistance firstly increase and then decrease with the increasing of single fiber to hybrid fiber; the surface becomes loose and porous gradually after abrasion, and the wear rate increases; and the appropriate hybrid ratio of fiber reinforced polymer The friction and wear properties of composite materials are better.