粉煤灰粒径对树脂基摩擦材料性能的影响  

Effect of Grain Size of Fly Ash on Properties of Resin-based Friction Materials

作　　者：王占红[1] 侯贵华 王宏亮 唐正生 

机构地区：[1]盐城工学院材料工程学院,江苏盐城224051 [2]江苏省新型环保重点实验室,江苏盐城224051

出　　处：《润滑与密封》2012年第1期49-52,66,共5页Lubrication Engineering

基　　金：江苏省新型环保重点实验室开放基金资助项目(AE201019);江苏高校自然科学重大基础研究项目(08KJA43009);盐城工学院新人培养项目(XKY2011028)

摘　　要：采用热压成型的方法制备不同粒径粉煤灰增强酚醛树脂基摩擦材料,研究掺杂不同粒径粉煤灰后摩擦材料的摩擦因数、磨损率和物理力学性能的变化情况,借助扫描电子显微镜观察摩擦材料的磨损表面微观形貌。研究表明:随着粉煤灰颗粒粒径的减小,填充的摩擦材料密度逐渐增加,硬度、抗弯强度、最大应变均呈现出先减小后增加的趋势;摩擦材料的摩擦因数变得较高且稳定,磨耗较低,当中位径小于等于4.70μm时,粉煤灰增强效果比较好。Fly ash filled resin-based friction materials were prepared by heat-press molding method. The effects of grain size of fly ash on friction coefficient, wear rate, physical and mechanical properties of friction materials were studied. Morphologies of wear surfaces were observed by scanning electron microscopy. The results from show that with the decrease of grain size fly ash, the density of the resin-based friction materials increases, the hardness, flexural strength and maximum strain first decrease and then increase, the friction coefficients becomes higher and more stable, the wear rate becomes low- er. The fly ash with grain size less than 4. 70 μm exhibits the optimum enhancement effect.

关 键 词：粉煤灰 树脂基摩擦材料 摩擦磨损 

分 类 号：TH117.1[机械工程—机械设计及理论] TB332[一般工业技术—材料科学与工程]