纳米碳管/石墨烯导电硅脂的性能  

Properties of Carbon Nanotubes/Graphene Conductive Silicone Grease

作　　者：吴礼宁[1] 夏延秋 吴浩[1] 陈中山 曹亚楠 侯冲 WU Lining;XIA Yanqiu;WU Hao;CHEN Zhongshan;CAO Ya’nan;HOU Chong(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China;School of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;State Grid Beijing Fangshan Electeic Power Company,Beijing 102400,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206 [2]内蒙古科技大学机械工程学院,包头014010 [3]国网北京市电力公司房山供电公司,北京102400

出　　处：《材料导报》2021年第6期6189-6193,共5页Materials Reports

基　　金：中央高校基本业务经费资助项目(2019QN039)。

摘　　要：分别以不同含量的纳米碳管和石墨烯为添加剂,二甲基硅油为基础油,聚四氟乙烯作稠化剂,制备了导电润滑硅脂。分别采用SYP4110-I润滑脂宽温度范围滴点测试仪、GEST-121体积电阻测定仪和MFT-R4000往复摩擦磨损试验机对硅脂的滴点、体积电阻率和摩擦学性能进行测试,采用扫描电子显微镜观察钢盘磨斑表面形貌,XPS能谱仪分析磨损表面元素组成。结果表明,两种添加剂都可以提高硅脂的滴点、导电性和摩擦学性能;且在添加量相同时,纳米碳管对硅脂滴点、导电性和摩擦学性能的改善优于石墨烯,当纳米碳管和石墨烯含量为0.2%时,制备的导电硅脂均具有更优异的抗磨减摩性能。XPS分析表明,在金属表面生成的摩擦保护膜是提高摩擦副抗磨减摩性能的根本原因。Conductive silicon grease was prepared by using polytetrafluoroethylene as thickening agent,polydimethylsiloxane as base oil,different contents of carbon nanotubes and graphene as additive.The dropping point,volume resistivity and tribological behaviors of silicone grease were evaluated by using a SYP4110-I grease wide temperature range dropping point tester,a GEST-121 volume surface resistance tester and a MFT-R4000 reciprocating friction and wear tester,respectively.The results show that both additives can improve the dropping point,conductivity and tribological behaviors of the silicone grease.When the mass fraction addition of the additive is 0.2%,more excellent anti-wear and anti-friction effects can be obtained.XPS analysis results show that the friction protection film which formed on the metal surface is the fundermental reason for raising the anti-wear and anti-friction ability of the friction pair.

关 键 词：纳米碳管 石墨烯 硅油 体积电阻率 摩擦磨损 

分 类 号：TH117[机械工程—机械设计及理论]