填料特性对尼龙摩擦学性能的影响及作用机理

在尼龙１０１０（ＰＡ１０１０）中分别添加颗粒状、层状、纤维状填料，制备出系尼龙基复合材料，利用环块磨损实验机研究了填料的形态，性质对尼龙基复合材料干摩擦条件下摩擦学性能的影响。结果表明，当填料的质量分数为３０％时，玻璃纤维、高岭土、铝粉、二氧化硅以及氧化铜均能改善ＰＡ１０１０的摩擦学性能，其中以玻璃纤维（ＧＦ）最为显著，层状结构的高岭土也有较好的效果，其他３种各向同性填料的改性效果差别较小，利用高倍显微镜对尼龙及其复合材料的转移行为，磨损机理以及填料减磨机理进行了研究，分析表明，填料的加匀不同程度的促进了复合材料向对介副表面的转移、改善了材料的摩擦学性能，而各种填料的减磨机理也不一样，尼龙基复合材料的磨损形式以粘着磨损，疲劳磨损为主，此外还有磨粒磨损，在给定实验条件下，ＰＡ１０１０复合材料含有质量分数为３０％的

Influence of Filler Properties on PA101O-Based Composites'Tribological Properties

A series of nylon based composites were prepared by adding different fillers into PA1010 resin. The influence of fillers on the tribological properties of nylon based composites were studied using ring block wear tester. The results show that with the mass fraction of fillers is 30%, all the CuO, SiO 2, kaolin, aluminum powder, and glass fiber can improve the tribological properties of the materials. Among those, glass fiber is the best, the hard isotropy filler powders have no apparent difference. The transfer behavior and wear mechanism of nylon and nylon based composites and anti wear mechanism of the fillers were also studied using an optical microscopy. The results indicate that the addition of fillers can promote transfer and improve the tribological properties of materials in different degrees. In addition, with the anti wear mechanism is different for different fillers. The main wear mechanisms of these composites are adhesive and fatigue wear. The 30% GF PA1010 composite with outstanding tribological properties would be a promising composite for tribological applications.