有机胺插层ZnS材料作为锂基润滑脂添加剂的摩擦学研究
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摘要
采用溶剂热法制备了乙二胺(en)和二乙烯三胺(DETA)插层硫化锌(ZnS)材料ZnS(en)_(0.5)和ZnS(DETA)_(0.5).选用SRV-V高频往复摩擦磨损试验机研究了ZnS(en)_(0.5)和ZnS(DETA)_(0.5)作为锂基润滑脂添加剂的摩擦学性能。利用扫描电子显微镜(SEM)、3D光学轮廓仪和X射线能谱分析仪(EDS)对磨损表面的微观形貌、元素分布进行了表征。结果表明:ZnS(en)_(0.5)和ZnS(DETA)_(0.5)作为添加剂均能够提高锂基脂的承载力、减摩和抗磨能力;层间距的增大有利于改善抗磨性能,含ZnS(DETA)_(0.5)锂基脂的抗磨性能明显好于ZnS(en)_(0.5).
Ethylenediamine(en) and diethylenetriamine(DETA) intercalated zinc sulfides(ZnS) ZnS(en)_(0.5) and ZnS(DETA)_(0.5) were prepared by solvothermal method. An SRV-V high frequency reciprocating tribometer was used to investigate the tribological properties of ZnS(en)_(0.5) and ZnS(DETA)_(0.5) as lithium-based grease additives. The morphologies and elemental distributions of the worn surfaces were characterized by means of scanning electron microscopy(SEM), three-dimensional(3 D) optical profiler and X-ray energy dispersion spectroscopy(EDS). The results from tribological experiments illustrate that ZnS(en)_(0.5) and ZnS(DETA)_(0.5) could effectively improve the load-carrying capacity and anti-wear and friction reduction properties of the lithium grease. The larger interlayer spacing was helpful to enhance the anti-wear property. The anti-wear performance of the grease containing ZnS(DETA)_(0.5) was obviously better than that of ZnS(en)_(0.5).
Ethylenediamine(en) and diethylenetriamine(DETA) intercalated zinc sulfides(ZnS) ZnS(en)_(0.5) and ZnS(DETA)_(0.5) were prepared by solvothermal method. An SRV-V high frequency reciprocating tribometer was used to investigate the tribological properties of ZnS(en)_(0.5) and ZnS(DETA)_(0.5) as lithium-based grease additives. The morphologies and elemental distributions of the worn surfaces were characterized by means of scanning electron microscopy(SEM), three-dimensional(3 D) optical profiler and X-ray energy dispersion spectroscopy(EDS). The results from tribological experiments illustrate that ZnS(en)_(0.5) and ZnS(DETA)_(0.5) could effectively improve the load-carrying capacity and anti-wear and friction reduction properties of the lithium grease. The larger interlayer spacing was helpful to enhance the anti-wear property. The anti-wear performance of the grease containing ZnS(DETA)_(0.5) was obviously better than that of ZnS(en)_(0.5).
引文
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[2] ZHANG R,QIAO D,LIU X,et al.A facile and effective method to improve the dispersibility of WS2 nanosheets in PAO8 for the tribological performances[J].Tribology International,2018,118:60-70.
[3] HART R T,KERR A A,ECKERT N A.Bismuth sulfide (Bi2S3) as the active species in extreme pressure lubricants containing bismuth carboxylates and sulfur compounds[J].Tribology Transactions,2009,53(1):22-28.
[4] LIU W,CHEN S.An investigation of the tribological behaviour of surface-modified ZnS nanoparticles in liquid paraffin[J].Wear,2000,238(2):120-124.
[5] CHEN S,LIU W.Characterization and antiwear ability of non-coated ZnS nanoparticles and DDP-coated ZnS nanoparticles[J].Materials Research Bulletin,2001,36(1/2):137-143.
[6] WANG L,GAO Y,LI Z,et al.Preparation and tribological properties of surface-modified ZnS nanoparticles[J].Lubrication Science,2015,27(4):241-250.
[7] 陆傲祥,代莹静,牛文星,等.不同形貌ZnS在锂基润滑脂中的摩擦学性能[J].太原理工大学学报,2018,49(5):660-668.LU A X,DAI Y J,NIU W X,et al.Tribological properties of ZnS with different morphologies in lithium grease[J].Journal of Taiyuan University of Technology,2018,49(5):660-668.
[8] 陆傲祥.硫化锌及其衍生物作为固体润滑剂的摩擦学性能研究[D].太原:太原理工大学,2018.LU A X.Tribological investigation of zinc sulfide and its derivative as lithium grease additives[D].Taiyuan:Taiyuan University of Technology,2018.
[9] ZHOU G T,WANG X,YU J C.A low-temperature and mild solvothermal route to the synthesis of wurtzite-type ZnS with single-crystalline nanoplate-like morphology[J].Crystal Growth & Design,2005,5(5):1761-1765.
[10] YAO W T,YU S H,PAN L,et al.Flexible wurtzite-type ZnS nanobelts with quantum-size effects:a diethylenetriamine-assisted solvothermal approach[J].Small,2005,1(3):320-325.
[11] DENG Z X,WANG C,SUN X M,et al.Structure-directing coordination template effect of ethylenediamine in formations of ZnS and ZnSe nanocrystallites via solvothermal route[J].Inorganic Chemistry,2002,41(4):869-873.
[12] CHEN L,ZHANG X,XU H,et al.Tribological investigation of two different layered zirconium phosphates as grease additives under reciprocating sliding test[J].Tribology Letters,2016,64(1):1.
[13] OUYANG X,TSAI T Y,CHEN D H,et al.Ab initio structure study from in-house powder diffraction of a novel ZnS(EN)0.5 structure with layered wurtzite ZnS fragment[J].Chemical Communications,2003(7):886-887.
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