玄武岩纤维和钢纤维含量对树脂基摩擦材料性能的影响研究

Effects of basalt fiber and steel fiber contents on properties of resin-based friction materials

以酚醛树脂、丁腈橡胶、重晶石、玄武岩纤维和钢纤维等为原料进行摩擦材料的制备,研究了玄武岩纤维和钢纤维含量对摩擦材料力学性能和摩擦磨损性能的影响。结果表明,当玄武岩纤维含量为10%~25%(质量分数,下同)时,随着纤维含量的减少,摩擦材料的冲击强度增大、压缩强度减小;当纤维总量占30%且玄武岩纤维与钢纤维质量比为1∶1时,2种增强纤维产生最佳的耦合效应,摩擦因数稳定在0.361~0.377之间,磨耗量约为0.132 cm^(3)/MJ;磨损试验中该摩擦材料的磨损以黏着磨损和疲劳磨损为主。

Friction materials were prepared using phenolic resin,nitrile rubber,barite,basalt fiber,and steel fiber as raw materials,and the effects of basalt fiber and steel fiber contents on their mechanical,friction,and wear properties were investigated.The results indicated that when the basalt fiber content varied from 10 to 25 wt%,the impact strength of the friction materials increased but their compression strength decreased with a decrease in the content of basalt fiber.An optimal coupling effect between the two reinforced fibers was obtained at a total fiber mass frication of 30 wt%and a mass ratio of basalt fiber to steel fiber of 1∶1.The friction coefficient of the friction materials was between 0.361 and 0.377,and their wear loss was 0.132 cm^(3)/MJ.The wear test results indicated that the adhesive wear and fatigue wear were the major wear of the resin-based friction materials reinforced with basalt fiber and steel fiber.