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1、carbonfibre碳纤维材料（碳纤维碳纤维材料）ThisarticleiscontributedbythemanchasingthemadmanDOCdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyouselectTXTfirstordownloadthesourcefiletothelocalmachine.Carbonfibre,asitsnameimplies,notonlyhastheintrinsiccharacterist
2、icsofcarbonmaterials,butalsohastheflexibilityandprocessabilityoftextilefibers.Itisanewgenerationofreinforcedfibers.Withthetraditionalglassfiber(GF)comparedtotheyoung'smodulusismorethan3times;withKevlarfiber(KF-49)comparedtotheyoung'smodulusisnotonlyabout2times,and
3、theinsolubleswellinginorganicsolvent,acidandalkalicorrosionresistance,riseabovethecommonherd.SomescholarsimmersedPANbaseCFinstrongalkaliNaOHsolutionin1981.Thetimehasbeenover20years,anditstillmaintainsfibermorphology.Carbonfiberisanewmaterialwithexcellentmechanical
4、properties,itislessthantheproportionofsteel1/4,thetensilestrengthofcarbonfiberresincompositematerialsaregenerallyabove3500Mpa,is7~9timesthatofsteel,thetensileelasticmodulusisalsohigherthanthatofsteel23000~43000Mpa.Therefore,thespecificstrengthofCFRPmaterialintensi
5、tyanddensitycanbeachieved2000Mpa/(g/cm3)above,thespecificstrengthofA3steelisonly59Mpa/(g/cm3),theratioofmodulusthansteel.Higherthanthestrengthofthematerial,thecomponentweightsmaller,higherthanthemodulus,thecomponentstiffnessisbigger,fromthispointindicatesthattheca
6、rbonfiberhasbroadapplicationprospectsinengineering,avarietyofnewcompositematerials(suchaspolymercomposites,metalmatrixcomposites,ceramicmatrixcomposites)theexcellentperformance,manypeopleexpecthumanbeingsinthematerialapplicationfromtheironageintoacompositematerial
7、widelyusedintime.Carbonfiberisaninorganicpolymerfiberwithcarboncontenthigherthan90%.Carbonfibercontainingmorethan99%carboniscalledgraphitefiber.Carbonfiberaxialstrengthandhighmodulus,nocreep,fatigueresistance,betweenheatandelectricalconductivitybetweenthemetalandn
8、onmetal,lowthermalexpansioncoefficient,goodcorrosionresistance,lowfiberdensity,goodpermeabilityofXray.Butitsimpactresistanceispoor,easytodamage,oxidatio
