Abstract Mechanical and tribological properties of nylon 6 and nylon 6/h-BN composites were investigated in this paper. Tensile, hardness, and impact tests were carried out for mechanical properties, while wear tests on pin-on-disc were carried out for tribological properties identification. Abrasion resistance tests were carried out on the TABER apparatus to analyze the abrasive wear of materials. SEM, XRD, and TGA were used to characterize the materials and to understand the distinctive features of nylon 6 and nylon 6/h-BN composites. Experimental results show that the mechanical properties and tribological behavior of nylon 6 got enhanced by the h-BN fillers. Tensile strength and modulus of elasticity were enhanced by 15.2% and 64.5%, respectively, while hardness and impact strength were enhanced by 3.45% and 6%, respectively. COF and wear rate of composites decreased up to 4 wt% filler reinforcement due to smooth transfer film formation. Coefficient of friction (COF) and wear resistance were improved by 10–15% and 8–10%, respectively, at various testing conditions. h-BN reinforcement in the matrix resulted in more weight loss due to abrasion and it reduced the abrasion resistance of nylon 6 by 5.5 times. Thermal stability was slightly increased, and crystallinity was little affected by the h-BN fillers.

中文翻译：

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h-BN 填料增强 PA6 的摩擦机械性能和热稳定性

摘要 本文研究了尼龙6和尼龙6/h-BN复合材料的力学和摩擦学性能。对机械性能进行了拉伸、硬度和冲击试验，而在摩擦学性能鉴定中进行了销-盘磨损试验。在 TABER 设备上进行耐磨性测试以分析材料的磨料磨损。SEM、XRD 和 TGA 用于表征材料并了解尼龙 6 和尼龙 6/h-BN 复合材料的独特特征。实验结果表明，h-BN填料增强了尼龙6的力学性能和摩擦学性能。拉伸强度和弹性模量分别提高了 15.2% 和 64.5%，而硬度和冲击强度分别提高了 3.45% 和 6%。由于平滑的转移膜形成，复合材料的 COF 和磨损率降低了高达 4 wt% 的填料增强。在各种测试条件下，摩擦系数 (COF) 和耐磨性分别提高了 10-15% 和 8-10%。基体中的 h-BN 增强由于磨损而导致更多的重量损失，并将尼龙 6 的耐磨性降低了 5.5 倍。热稳定性略有提高，结晶度受 h-BN 填料影响很小。