UHMWPE纳米SiO2复合弹性材料的摩擦磨损性能研究

UHMWPE/SiO231,1,1,1,2(1.,411201;2.,400050):SiO2UHMWPE/SiO2,MRH25A;,SiO2,UHMWPE40%;SiO210%,,;,,;;UHM2WPE,:;;:TB332:A:100129731(2009)05208232031(UHMWPE),[1],,12;,[24],[510]SiO2,UHMWPE/SiO2,,2,,M2,;,2040nm;;,:5%10%15%20%25%SiO2UHM2WPE,,8MPa10min;(1905)120min;45MPa30min;;;3MRH25A12,40Cr,Ra=0.15m,,,10min0.1mg,;;JSM26360LV(SEM)UH2MWPE/SiO21MRH25AFig1MRH25Africtionandwearinstrument3.1,,3.2:P=10(A+C)-2.5(B+R)(1)P(N);A(N);C(N);B328:UHMWPE/SiO23:(50775071);(06JJ2021);(06A018);(2007205):2008208218:2009202223::(1962-),,,,,(N);R(N):F=9.45(B+R)(2)F(N);:=FP(3);F(N):,:=m2Rnt(4)m,R,t,n4UHMWPE/SiO24.1SiO22UHMWPE/SiO2SiO2,,SiO2UHMWPEUHMWPE21.06m/s,76NMWPE/SiO2,,2UHMWPE/SiO2Fig2EffectofcontentofnanometerSiO2onthefric2tionandwearcharacteristicsofcompositemate2rials4.23(a),225N470N,30%,,,UHMWPE,,[6,9];,,3Fig3Effectofloadonthefrictionandwearcharac2teristicsofcompositematerials3(b),,,,[8,9]310min,SiO210%4.34(a),100r/min400r/min,0.016,10%410min,SiO210%4(b),,,,,,UHMWPE,4.45,,,500s,,0.2290.156(30%),56,UHMWPE(6(a));42820095(40),,,(6(b)),SiO2,,UHMWPE/SiO2UHMWPE6(1)SiO2UHMWPE,,SiO210%,UHMWPE/SiO2,(2),UHMWPE/SiO2,;,,,UHMWPE,;,(3)UHMWPE/SiO2,SiO2,,:[1].[M].:,2001.[2]MarcusK,AllenC.[J].Wear,1993,162:109121102.[3],,.[J].,2005,(3):67270.[4]ChenZhan,WangJiaxu,QingDatong,etal.[J].Lubrica2tionEnginering,2001,(4):34235.[5],.[J].,2006,35(2):33237.[6]LeiYi,GuoJianliang,ZhangYanxiang.[J].Tribolgy,2006,26(3):2342237.[7],,.[J].,2006,26(3):2282233.[8]ZhangXuping,ZhouHuamao,KangXueqin.[J].Plastic,2003,32(5):15217.[9],,.[J].,2005,23(1):1422145.[10]XueMaoquan,ZhuLingyum.[J].PlasticsSic&Tech2nology,2005,167(3):22.(829)528:UHMWPE/SiO2,,25(1)2(2)2Fe3O42Fe2+2OH-NO3-(3),-10dB6GHz(4)2,:[1],.[M].:,2004.[2],,.[J].(C),1997,27(5):4102414.[3],.2[M].:,2005.[4],,.[M].:,2004.PreparationofbiologicalabsorbingparticlesZHANGWen2qiang,CHENBo,ZHANTian2zhuo,ZHANGDe2yuang(SchoolofMechanicalEngineeringandAutomation,BeijingUniversityofAeronauticsandAstronautics,Beijing100083,China)Abstract:Particlesofelectromagneticwaveabsorbingtakeakeyeffectontheelectromagneticprotectionandtheradarwaveabsorbing.Inthispaper,microorganismsareusedasthesubstrateofthesol2gelcoatingprocessing.AlayerofFe3O4wasdepositonthemicrobialsurface,andthecorrespondingabsorbingparticlesareprepared.De2velopingthestudyofthemorphology,composition,microwavemagneticparameters.Experimentsshowthatthelayerofbio2absorbingparticles,spinelferriteFe3O4,whosethicknessislessthan3microns.Spiral2shapedbio2logicalabsorbingparticles,coatedwithferrite,haveagoodperformance.Siliconerubberisusedasabinderpre2paredby1.2mmthickmixedspiralofabsorbingparticlescoating.Theresultsshowedthatthereflectivelossesaremorethan-10dBin10216GHz.Keywords:microbialcells;sol2gel;electromagneticabsorbing;permeability(825)StudyonthefrictionandwearpropertiesofUHMWPE/SiO2compositematerialsGUOYuan2jun1,XIAOHua2lin1,HUHui1,HUBin2liang1,HUANGWei2jiu2(1.HunanProvincialKeyLaboratoryforHealthMaintainingofMechanicalEquipment,HunanUniversityofScienceandTechnology,Xiangtan411201,China;2.KeyLab.ofDieandMoudTechniques,ChongqingUniversityofTechnology,Chongqing400050,China)Abstract:NanocompositesofUHMWPE/SiO2arepreparedbyfillingnano2scaleSiO2inUHMWPE(Ultra2highmolecularweightpolyethylene).ThefrictionandwearpropertiesandtheeffectofcontentofnanometerSiO2andloadonthetribologicalcharacteristicsofcompositematerialsareinvestigatedonMRH25Africtionandwearinstrument.ThewornsurfaceofUHMWPE/SiO2compositesisexaminedonascanningelectronmicroscope(SEM).Itisfoundthatthefillingofnano2scaleSiO2candecreasethefrictioncoefficientandincreasethewearproperties.WhenthecontentofSiO2isabout10%,thefrictioncoefficientandwearrateofcompositeismini2mal;atfirst,ThefrictioncoefficientofUHMWPE/SiO2compositeincreaseswiththeloadincreasing,andthenitbecamestable.thefrictionprocessofUHMWPE/SiO2materialsexistsarunning2inperiod.ThemainwearmechanismofUHMWPEisadhesion,whilethewearmechanismofcompositeisshiftedtofatiguerupture.Keywords:ultra2highmolecularweightpolyethylene(UHMWPE);compositematerials;frictionandwear928: