Abstract Polyamide 66 is widely used for sliding parts that are in contact with steel under grease lubrication, including worm gears or bearing retainers. To meet the requirements for downsizing these parts and for their use under severe conditions, reinforcement fibers, such as glass fibers, are added to polyamide 66 to increase its strength and stiffness. However, the use of glass-fiber-reinforced polyamide 66 composites in sliding parts leads to wear and creep of the composites due to peeling of the fibers and scratching of polyamide 66 during sliding. Additionally, the aggressive effects of the hard fibers on the steel counterpart should be considered. In this study, the effects of the composition of glass-fiber-reinforced polyamide 66 on its tribological properties were investigated to aid in the development of a composite with optimal tribological properties. The results indicate that the use of higher-molecular-mass polyamide 66, smaller-diameter glass fibers, and a suitable glass fiber treatment agent to improve the interfacial adhesion of the fibers to polyamide 66 can enhance the wear and creep resistance of the composite and decrease the aggressive effect of the glass fibers on the steel counterpart, which occurs via two-body abrasive wear.

中文翻译：

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脂润滑下玻璃纤维性能和聚合物分子质量对聚酰胺66基复合材料与碳钢接触的力学和摩擦学性能的影响

摘要 聚酰胺66广泛用于润滑脂润滑下与钢接触的滑动部件，包括蜗轮或轴承保持架。为了满足这些部件的小型化和在恶劣条件下使用的要求，在聚酰胺 66 中添加了增强纤维，如玻璃纤维，以增加其强度和刚度。然而，在滑动部件中使用玻璃纤维增​​强的聚酰胺 66 复合材料会导致复合材料的磨损和蠕变，这是由于滑动过程中纤维的剥离和聚酰胺 66 的划伤。此外，还应考虑硬纤维对钢对应物的侵蚀性影响。在这项研究中，研究了玻璃纤维增​​强聚酰胺 66 的成分对其摩擦学性能的影响，以帮助开发具有最佳摩擦学性能的复合材料。结果表明，使用较高分子量的聚酰胺 66、较小直径的玻璃纤维和合适的玻璃纤维处理剂来提高纤维与聚酰胺 66 的界面附着力，可以提高复合材料的耐磨性和抗蠕变性，减少玻璃纤维对钢对应物的侵蚀性影响，这种影响通过双体磨料磨损发生。