Investigation of the tribological performance of polytetrafluoroethylene(PTFE)nanoparticle additives in lubricating oils
ZHANG Bo
CAO Ganming
DENG Tiandi
XIONG Ningdan
LEI Ying
JIANG Wei
DUAN Huamei
Abstract：To enhance the lubrication performance of compressor oils under extreme operating conditions,this study employed polytetrafluoroethylene(PTFE)nanoparticles as protective additives.Nanocomposite lubricants with varying volume fractions(0.5-3 vol%)of PTFE were prepared via ultrasonic dispersion and systematically investigated for their dispersion stability,tribological properties,and physicochemical characteristics.Experimental results demonstrated that at 2 vol%PTFE,the nanoparticles exhibited exceptional dispersion stability in the base oil.Under a 1 kN load,the friction coefficient of the lubricant decreased by 22.5%,accompanied by shortened oil film rupture time and significantly improved extreme-pressure(EP)performance.At low temperature(20℃),the viscosity increased by 26.09%with PTFE addition,while minimal viscosity variation occurred at high temperature(80℃),confirming its wide-temperature applicability.Improvements in acid number and copper strip corrosion rating(from Class 1b to 1a)validated enhanced oxidation resistance and anti-corrosion capabilities.FTIR analysis revealed no chemical structural changes in the base oil after PTFE incorporation.The on-site experimental test results demonstrate that the addition of PTFE protective fluid reduced the electrical energy consumption per unit output of shale gas by 13.25%.
Keywords：polytetrafluoroethylene(PTFE)nano-enhanced lubricantsdispersion stabilitytribological performancephysicochemical properties
Publication Date：2025-09-20
Online Publishing Date：2025-10-28(First online date of this platform, not the publication date of the document)
Pages：8( 43-50 )