摘要
制备了油酸改性的白云母和高岭土,并将其用作聚四氟乙烯润滑脂添加剂;利用红外光谱(IR)表征改性前后白云母和高岭土;用体积电阻率测定仪、扫描电子显微镜(SEM)、载流往复式摩擦磨损试验机测试了添加白云母或高岭土的聚四氟乙烯润滑脂的体积电阻率、摩擦表面形貌、摩擦磨损性能。结果表明:油酸改性白云母的减摩性能最优,而油酸改性高岭土的抗磨性能最佳;载流条件下,油酸改性高岭土添加剂的润滑和绝缘综合性能最优,同时具有最大的接触电阻。
Muscovite and kaolin modified by oleic acid were prepared and used as additives for PTFE grease.The muscovite and kaolin before and after modification were characterized by IR.The volume resistivity,friction surface morphology and friction and wear properties of PTFE grease with muscovite or kaolin were measured by volume resistivity tester,scanning electron microscope(SEM)and current carrying reciprocating friction and wear tester.The results show that the friction reducing property of muscovite modified by oleic acid is the best,while the anti-wear property of kaolin modified by oleic acid is the best.Under the condition of current carrying,the oil modified kaolin additive has the best comprehensive properties of lubrication and insulation,and has the largest contact resistance.
作者
夏延秋
李庆贺
王远慧
冯欣
杨洪涛
Xia Yanqiu;Li Qinghe;Wang Yuanhui;Feng Xin;Yang Hongtao(School of Energy and Mechanical Engineering,North China Electric Power University,Beijing 102206;Rundexi Technology(Hubei) Co.,Ltd.)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2021年第11期56-63,共8页
Petroleum Processing and Petrochemicals
基金
北京市自然科学基金项目(2172053)。
关键词
油酸改性
白云母
高岭土
载流摩擦磨损
润滑脂
绝缘性
oleic acid modification
muscovite
kaolin
current carrying tribological behaviors
grease
insulativity
