石墨烯对树脂基摩擦材料性能影响  

The Influence of Graphene on the Performance of Resin Based Friction Materials

作　　者：钟厉[1] 黄新 邓小强 韩西[1] 钟科 ZHONG Li;HUANG Xin;DENG Xiao-qiang;HAN Xi;ZHONG Ke(School of Mechatronics&Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Longray Automotive Parts Co.,Ltd.,Chongqing 400026,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074 [2]重庆朗锐汽车零部件有限公司,重庆400026

出　　处：《塑料工业》2021年第5期106-110,共5页China Plastics Industry

基　　金：重庆市自然科学基金:面上项目(cstc2020jcyj-msxmX0749);重庆市研究生联合培养基地项目(JDLHPYJD2020031);重庆市研究生导师团队建设项目(JDDSTD2019007)。

摘　　要：借助控制变量法探究石墨烯含量对酚醛树脂基摩擦材料性能的影响,采用一次热压成型技术制备石墨烯改性酚醛树脂基摩擦材料试样,利用洛氏硬度计、剪切强度试验机和定速式摩擦试验机分别检测其硬度、内剪切强度和摩擦磨损性能,分析石墨烯含量与摩擦材料相关性能的变化规律。研究表明,石墨烯含量0.3%试样综合性能最优,随着石墨烯含量增加其硬度和摩擦系数稳定性逐步提高,但石墨烯含量0.4%试样硬度会超过酚醛树脂的适宜硬度范围;中高温阶段含石墨烯的摩擦材料摩擦系数低于不含石墨烯试样但磨损率有所增加,石墨烯含量0.2%试样摩擦系数和磨损率最高,其值为0.344和0.309×10^(-7)cm^3/(N·m);酚醛树脂基摩擦材料的内剪切强度会因各组分材料的黏接性能减弱而降低。The influence of graphene contents on the properties of phenolic resin based friction materials was investigated by control variable method.The samples of graphene modified phenolic resin based friction materials were prepared by one-step hot pressing technology.The hardness,internal shear strength and friction wear properties of composites were tested by rockwell hardness tester,shear strength tester and constant speed friction tester.The relationship between the contents of graphene and the friction and wear properties was analyzed.The results show that the comprehensive performance of the sample with 0.3%graphene content is the best.With the increase of graphene content,the hardness and the stability of friction coefficient gradually improve,but the hardness of the sample with 0.4%graphene content will exceed the suitable hardness range of phenolic resin.At medium and high temperature,the friction coefficient of friction material with graphene is lower than that without graphene,but the wear rate increases.The friction coefficient and wear rate of friction material with graphene content of 0.2%are the highest,with values of 0.344 and 0.309×10^(-7)cm^(3)/(N·m).The internal shear strength of phenolic resin based friction materials will decrease due to the weakening of the adhesive properties of each component materials.

关 键 词：石墨烯 摩擦材料 树脂基 性能 

分 类 号：TQ327.6[化学工程—合成树脂塑料工业]