轮胎粉含量对汽车摩擦材料性能的影响

来源期刊:中南大学学报(自然科学版)2021年第2期

论文作者:吴宏 杨阳 刘伯威 匡湘铭

文章页码:358 - 368

关键词:轮胎粉;摩擦材料;摩擦磨损;制动噪声

Key words:waste tyre powder; friction material; friction and wear; brake noise

摘    要:在一种成熟低金属摩擦材料配方的基础上,通过调整配方中轮胎粉的质量分数,采用直接混合工艺制备不同组分的汽车摩擦材料,对其进行摩擦磨损性能、理化性能、力学性能以及振动噪声(NVH)性能测试,并用扫描电镜(SEM)和能谱仪(EDX)对不同试样摩擦表面进行表征,分析其摩擦磨损机制。研究结果表明:随着轮胎粉的质量分数从0增加到4%,材料的密度、硬度和内剪切强度减小;摩擦材料名义摩擦因数增大,噪声发生概率降低,磨损率先降低后增加。综合比较,当轮胎粉质量分数为2%时,摩擦材料综合性能最佳。

Abstract: The waste tyre powder were prepared by hot-press method based on a basic formula, and the friction materials were prepared by directly mixed process. The tests for the tribological properties, physical and chemical properties, mechanical properties and noise vibration and hardness(NVH) were completed, and the friction surfaces and wear debris of friction materials were observed by using scanning electron microscopy(SEM) and energy dispersive X-ray microanalysis(EDX). And the friction and wear mechanism were discussed. The results show that with the mass fraction of tire powder increasing from 0 to 4%, the density, hardness and internal shear strength of the material decrease; the nominal friction coefficient of friction material increases, the probability of noise decreases, and the wear rate decreases first and then increases. Compared comprehensively, when the mass fraction of tire powder is 2%, the friction material has the best comprehensive properties.

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