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以含二氮杂萘酮结构的聚醚砜酮(PPESK)树脂为基体,填加固体润滑剂和短炭纤维(CF)制备了新型耐热树脂基复合材料、研究了摩擦条件(如载荷、行程等)和CF含量对复合材料的摩擦磨损性能的影响,分析了PPESK树脂及其复合材料的磨损机理.结果表明,短CF和固体润滑剂的加入可有 效改善PPESK的摩擦磨损性能.当CF含量为10%时,复合材料的摩擦系数与聚四氟乙烯(PTFE) 相当,但比磨损率降低2个数量级;与纯树脂相比,摩擦系数减小为原来的二分之一,比磨损率下降1个数量级,显示出优良的减磨自润滑性能.纯树脂的磨损机理主要是刨削磨损和粘着磨损,而复合材料的磨损特性主要表现为粘着磨损.PPESK树脂基复合材料比基体、聚四氟乙烯(PTFE)具有更好的耐磨性和自润滑性.
A new type of heat-resistant resin matrix composites were prepared by impregnating PPESK resin with solid lubricants and short carbon fibers (CF). The effects of friction conditions (such as load, Stroke, etc.) and CF content on the friction and wear properties of the composites were studied. The wear mechanism of PPESK resin and its composites was analyzed. The results show that the addition of short CF and solid lubricant can effectively improve the friction and wear properties of PPESK. When the content of CF is 10%, the friction coefficient of the composites is equivalent to that of polytetrafluoroethylene (PTFE), but it is two orders of magnitude lower than the wear rate. Compared with the pure resin, the friction coefficient decreases to one half of that of pure resin, Than the wear rate decreased by 1 order of magnitude, showing excellent anti-wear self-lubricating properties. Pure resin wear mechanism is mainly planing wear and adhesive wear, and the wear characteristics of the composite mainly manifested as adhesive wear .PPESK resin-based composite than the matrix, polytetrafluoroethylene (PTFE) has better wear resistance and self Lubricity.