海泡石纤维在新型高摩擦因数合成闸瓦中的应用

Apply Sepiolite Fiber to New High Friction Coefficient of Composition Brake Shoe

利用1∶3制动动力台、万能材料试验机等测试手段,以高摩擦因数合成闸瓦的传统配方为基础,研究了不同性能的海泡石纤维对合成闸瓦摩擦磨损性能与物理力学性能的影响。结果显示,不同性能的海泡石纤维对合成闸瓦的硬度、压缩模量没有显著影响,而在摩擦性能方面均能提高合成闸瓦的耐速性,使合成闸瓦的摩擦因数与速度曲线集中,从而提高车辆的制动平稳性。其中干容积大、沉淀值高的海泡石不仅能提高合成闸瓦的冲击性能和压缩强度,还能提高合成闸瓦的摩擦因数,但会导致合成闸瓦的磨耗量增大。

Based on traditional composition brake shoe formula, by means of 1 ： 3 braking power platform, universal material testing machine, the tribological characteristics of sepiolite fiber reinforced composition brake shoe and physical mechanical performance were studied. The result is that different property sepiolite fiber had no significant effect on hardness and compression modulus of composition break shoe, while it that can enhance the performance of resistance to speed, centralize the composition brake shoe of the friction coefficient and speed curve and improve braking stability. The sedimentation value of large volume sepiolite not only boosted compressive strength of break shoe but also enhanced friction coefficient, at same time increase abrasion.