Mono-dispersed Ag nanoparticles decorated graphitic carbon nitride:An excellent lubricating additive as PPESK composite film  被引量:1

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作  者:Beibei CHEN Mengjie ZHANG Kan ZHANG Zhe DONG Jiaye LI Gai ZHAO 

机构地区:[1]School of Materials and Science Engineering,Institute for Advanced Materials,Jiangsu University,Zhenjiang 212013,China [2]State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

出  处:《Friction》2022年第5期717-731,共15页摩擦(英文版)

基  金:This work was financially supported by the Project of Jiangsu Provincial Six Talent Peak(No.XCL-214);Foundation of State Key Laboratory of Solid lubrication(No.LSL-1709);Senior Intellectuals Fund of Jiangsu University(No.13JDG099).

摘  要:Studies show that two dimensional(2D)nanomaterial and its hybrid have a great promise in tribology for the special laminar microstructure.However,the majority of performed investigations about 2D graphitic carbon nitride(g-C_(3)N_(4))nanosheets are most focused on energy storage,catalysis,adsorption,rarely tribology.In the present study,g-C_(3)N_(4) supporting mono-dispersed Ag nanoparticle hybrid(g-C_(3)N_(4)/Ag)is prepared,and its microstructure and chemical composition are determined.More specifically,the tribological performance as the lubricating additive of poly phthalazinone ether sulfone ketone(PPESK)composite is investigated using the ball-on-disc friction tester.Moreover,the corresponding enhancement mechanism is well proposed based on the experimental analysis and theoretical simulation.Obtained results show that Ag nanoparticles with a size of about 10-20 nm are homogeneously anchored on g-C_(3)N_(4) nanosheets,favoring for good compatibility between g-C_(3)N_(4)/Ag and PPESK.It is found that when 0.3 wt%of g-C_(3)N_(4)/Ag is added to PPESK,the friction coefficient and wear rate of PPESK decrease by 68.9%and 97.1%,respectively.These reductions are mainly attributed to the synergistic self-lubricating effect of Ag nanoparticles and g-C_(3)N_(4) nanosheet,the formation of transfer film,as well as the limited effect of g-C_(3)N_(4)/Ag on the shear deformation of PPESK composite film.Furthermore,it is found that the proposed g-C_(3)N_(4)/Ag-PPESK composite still keeps reasonable friction-reducing and wear-resistant properties under heavy loads and high rotating speeds.The present study demonstrates that the proposed g-C_(3)N_(4)/Ag hybrid is an excellent lubricating additive for polymer composites.

关 键 词:g-C_(3)N_(4)/Ag hybrid poly phthalazine ether sulfone ketone(PPESK)composite film friction wear theoretical simulation 

分 类 号:TH117.22[机械工程—机械设计及理论]

 

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