多维复合增强汽车摩擦材料
详细信息Performances of multi-reinforced automotive friction materials
-
摘要: 以玻璃纤维、 铜纤维、 矿物纤维、 芳纶纤维、 纳米钛酸钾晶须和片状蛭石等制备多维复合增强非石棉有机汽车摩擦材料, 构成具有“微米和纳米”尺度、 “一维（纤维）和二维（片状）”形态、 “无机和有机”材质的多维复合增强体系。基于材料的力学和摩擦磨损性能测试结果, 通过回归模型分析对复合体系配方进行了优化。通过材料的内部结构和摩擦面的形貌观察, 分析了多维复合增强体系提高材料力学和摩擦磨损性能的内在机制。结果表明, 通过优化配方, 各增强相之间表现出良好的混合和协同效应, 优化多维复合增强汽车摩擦材料的冲击强度为0.54J/cm2、 总磨损率为1.35×10-7cm3/(N·m)、 摩擦系数的变异系数为5.86%。Abstract: The glass fiber, copper fiber, mineral fiber, Kevlar, potassium titanate whisker and vermiculite were used to prepare the multi-reinforced non-asbestos organic (NAO) automotive friction materials. The multi-reinforced materials have the various characters of micro and nano sized structures, one and two dimensions, inorganic and organic natures. The mechanical and friction properties of the automotive friction material were investigated to optimize the experimental condition. The reinforcing mechanism was discussed based on the environment scanning electron microscopy observation. The research results show that the multi-reinforced NAO automotive friction material under the optimized condition possesses higher impact strength (0.54J/cm2), better wear resistance (total wear： 1.35×10-7cm3/(N·m)) and friction stability (coefficient of variation： 5.86%), resulting from the mix and synergistic effect of various reinforced materials.
-
Keywords:
- reinforcement /
- wear resistance /
- composites /
- non-asbestos organic /
- friction materials
-
-
计量
- 文章访问数: 1756
- HTML全文浏览量: 90
- PDF下载量: 925
下载:
