Abstract

This paper reports on studies of tribotechnical behavior under conditions of friction without lubrication and the mechanical properties of fluoroplastic composites with discrete carbon fibers obtained from different grades of fluoroplastic-4 (F-4, PTFE). The particle size of PTFE powder and its mechanical properties influence the tribotechnical properties of composites with carbon fibers. The wear resistance and PV factor are higher and the friction coefficient is lower for the composite based on F-4 grade PN 90, whose powder particles are larger than the PTFE particles of the other studied grades. Composite made of modified fine-particle PTFE (grade TFM 1705) showed the highest modulus of elasticity and strength. It is assumed that large PTFE particles, which affect the mechanical properties of the composite negatively, contribute to a more intense formation of a transfer film during friction, and also reduce the contact area, which reduces the friction coefficient with increasing pressure in the friction zone.

中文翻译：

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基于不同等级的氟塑料4和碳纤维的复合材料的摩擦学性能

摘要

本文报道了在不润滑的摩擦条件下的摩擦学性能研究，以及从不同等级的氟塑料4（F-4，PTFE）获得的含离散碳纤维的氟塑料复合材料的机械性能。PTFE粉末的粒径及其机械性能会影响碳纤维复合材料的摩擦学性能。F-4级PN 90的复合材料的耐磨性和PV因子较高，摩擦系数较低，其粉末颗粒大于其他研究级别的PTFE颗粒。由改性细颗粒PTFE（TFM 1705级）制成的复合材料显示出最高的弹性模量和强度。假定较大的PTFE颗粒会对复合材料的机械性能产生负面影响，