1 School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China 2 School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China 3 State Grid Beijing Fangshan Electeic Power Company, Beijing 102400, China
Abstract: 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.
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2021, Vol. 35 
