木质素纤维增强摩擦材料的性能研究

发布时间：2018-05-08 20:03

  本文选题：木质素纤维 + 摩擦材料　； 参考：《润滑与密封》2017年08期

【摘要】：制备一种木质素纤维增强摩擦材料,采用冲击试验机和硬度计分析其力学性能,采用摩擦磨损试验机考察其摩擦磨损性能,采用扫描电子显微镜(SEM)和X射线衍射仪分析其断面形貌及磨损表面形貌,并探讨其磨损机制。结果表明:与钢纤维相比,木质素纤维能够提高摩擦材料的抗冲击韧性和抗断裂韧性,降低摩擦材料的硬度;在摩擦过程中木质素纤维在摩擦材料表面形成一层致密的摩擦层和转移膜,使摩擦材料的摩擦因数比较稳定,且300℃高温时没有出现明显的热衰退现象,磨损量符合国家标准的范围;SEM和X射线衍射分析表明,木质素纤维与基体结合强度高,对摩擦材料增强效果显著,其在高温阶段的主要磨损机制为磨粒磨损和疲劳磨损。
[Abstract]:A lignin fiber reinforced friction material was prepared and its mechanical properties were analyzed by impact tester and hardness tester. Scanning electron microscopy (SEM) and X-ray diffractometer (XRD) were used to analyze the morphology of the section and the wear surface, and the wear mechanism was discussed. The results show that lignin fiber can improve the impact toughness and fracture toughness of friction materials and reduce the hardness of friction materials. In the process of friction, the lignin fiber forms a dense friction layer and a transfer film on the surface of the friction material, which makes the friction coefficient of the friction material more stable, and there is no obvious phenomenon of thermal degradation at 300 鈩，

本文编号：1862847