轮胎粉含量对汽车摩擦材料性能的影响  

Effect of tyre powder content on properties of automotive friction materials

作　　者：杨阳[1,2] 吴宏 刘伯威[1,2] 匡湘铭[2] YANG Yang;WU Hong;LIU Bowei;KUANG Xiangming(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;Hunan Boyun Automobile Brake Material Co.,Ltd.,Changsha 410205,China)

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]湖南博云汽车制动材料有限公司,湖南长沙410205

出　　处：《中南大学学报（自然科学版）》2021年第2期358-367,共10页Journal of Central South University:Science and Technology

基　　金：国家重点研发计划项目(2016YFB1100103)。

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。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.

关 键 词：轮胎粉 摩擦材料 摩擦磨损 制动噪声 

分 类 号：U465[一般工业技术—材料科学与工程]