石墨烯改性方法对树脂基炭刷载流磨损性能影响研究  

Research on influence of Graphene modification technology of resin carbon brush on the current-carrying performance

作　　者：宋腾辉[1] 涂川俊[1] 邓联谱 熊建林 冯鹏洋 张剑宇[1] SONG Teng-hui TU Chuan-jun DENG Lian-pu XIONG Jian-lin FENG Peng-yang ZHANG Jian-yu(College of Materials Science and Engineering, Hunan University, Changsha 410082, China Changsha Aobo Carbon Co.,Ltd., Changsha 410152, China)

机构地区：[1]湖南大学材料科学与工程学院,长沙410082 [2]长沙奥博碳制品有限公司,长沙410152

出　　处：《炭素》2016年第4期19-27,42,共10页Carbon

摘　　要：本文采用直接混合和液态混合两种不同工艺制备了石墨烯改性树脂基炭刷材料,对炭刷材料进行物理性能和载流磨损性能测试,采用SEM、EDS等方法对炭刷材料磨损面形貌及成分进行表征。结果表明:石墨烯的加入能够有效的提高炭刷材料的抗磨性能,采用直接混合2wt%石墨烯和液态混合1wt%石墨烯制备炭刷材料载流磨损率分别降低28/和38%。直接混合法加入石墨烯提高了炭刷强度,减少了磨屑的产生,石墨烯能够调节炭刷磨损面,提高炭刷材料的润滑性能,降低磨抿液态混合法加入石墨烯增强了炭刷材料的韧性,有助于炭刷表面复合润滑膜的形成,避免了磨屑产生,有效降低磨损。In this paper, the carbon brush modified by graphene was prepared via directly modification and liquid modification ways, the physical and current-carrying wear properties were studied, and the morphology and composition of the wear surface were investigated by SEM and EDS. Results showed that, the addition of graphene can effectively improve the anti-wear performance of brush material, the wear rate of carbon brush directly modified and liquid modified by graphene was reduced about 28% and 38%, respectively. The main mechanism of carbon brush directly modified by graphene was improved the strength and lubricating property, which reduced the risk of wear debris, and the lubrication action promoted form lubricating film on wear surface, improving the matching between the friction pair and reduce wear rate. When the resin carbon brush was liquid modified by graphene, the main effect of graphene was to increase the toughness of the resin carbon brush, as a result, enhanced the ability of wear surface resistance to mechanical wear, almost avoid the generation of wear debris and reduce the spark caused by wear debris, and reduce the wear rate.

关 键 词：石墨烯 树脂炭刷 载流磨损 减磨抗磨 

分 类 号：TB332[一般工业技术—材料科学与工程]