选用纳米粒子改性酚醛树脂为基体,以剑麻纤维和硅灰石混杂为增强纤维,制备了无石棉复合摩擦材料。采用D-MS定速摩擦机对样品进行定速试验,利用扫描电镜对磨损表面进行分析,研究了剑麻纤维/硅灰石不同配比对摩擦材料性能的影响。结果表明,当剑麻纤维和硅灰石的配比为1∶2时,该摩擦材料的力学性能较好,摩擦系数稳定在0.40.5之间,具有较好的耐磨性能,达到了汽车制动器衬片GB5763-1998的规定要求。
By using phenol formaldehyde resins modified with nano-SiO2 as matrix,using surface-treated sisal fiber and wollastonite as reinforcement,we prepared the asbestos-free friction material.The friction and wear properties were investigated on constant speed（D-MS） tester.And the abrasion surfaces of composites were observed by scanning electron microscope（SEM）.The result shows that all the properties,such as,friction coefficient and wear rate can meet the GB5763-1998 requirement.When the sisal fiber and wollastonite hybrid ratio is 1∶2,the composite has the high mechanical properties,suitable and stable coefficient of friction and relatively low wear rate especially at high temperature.
参考文献
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