【摘要】 以注塑成型法制备MoS2和碳纤维混杂增强尼龙1010复合材料,采用MM-200型磨损试验机考察复合材料摩擦磨损性能。研究结果表明:在干摩擦条件下,MoS2和碳纤维混杂可显著改善尼龙复合材料摩擦学性能,较小载荷下复合材料磨损以轻微磨粒磨损和疲劳磨损为主,较高载荷下复合材料则以热疲劳断裂剥落磨损为主。摩擦过程中MoS2和对偶铁发生摩擦化学反应,生成和对偶底材具有较强结合能力的硫化亚铁和硫酸铁等,同时部分被氧化生成MoO3。更多还原

【Abstract】 All specimens of MoS2 and carbon fiber reinforced polyamide 1010(PA1010) composites were prepared by a micro injection machine. The friction coefficient and wear rate of composites were investigated with the ringblock test rig. The results show that hybrid fillers can considerably improve the tribological properties of PA1010 composites under dry sliding friction conditions. The dominant wear mechanisms of composites were abrasive wear and fatigue wear at a low normal pressure; the fatigue cracking and peeling due to thermal effect resulted in the severe wear of composites with the increase of normal pressure. The tribochemical reactions between MoS2 and counterface Fe were found to generate FeS2 and FeSO4 which were more effective to promote the adhesive strength to the counterpart, and also MoS2 was partially oxidized to MoO3 during sliding.更多还原