碳纤维增强复合材料课件.pptx

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1、RESEARCHANDTREATMENTOFTHESURFACEOFCARBONFIBERINCARBONFIBERREINFORCEDCOMPOSITESPART01PART02PART03PART04PART05IntroductionCFinterfaceArticleoneArticletwoConclusions01PARTONEIntroduction01CarbonFiberWhatisCarbonFiber?Carbonfiberisafibrouscarboncompoundthatcarbonizedbyh

2、ightemperature(1500℃)inaninertatmosphereofanorganicorlowmolecularhydrocarbongas.Thecarboncontentofthecompoundismorethan90%02CFRCWhatisCarbonfiberreinforcedcomposites?CFRCisakindofstructuralmaterialmadeofcarbonfiberwithresin,metalorceramics.Excellenttensilestrength,h

3、ighstiffness,lightweightandgreatthermalresistancemakecarbonfiberreinforcedcompositesanidealstructuralmaterial.02CFRCINTERFACR:Interfaceisanintermediatephasebetweenthereinforcingphaseandthematrixphase,whichisthebridgebetweenthereinforcingphaseandthematrix,aswellasthe

4、transmitterofstressandotherinformation.Thepropertiesofcarbonfibercompositesaredeterminedbythreemaincomponents:fiber,matrixandinterfacelayer.02PARTTWOCFinterface01interfaceThepropertyofCFcompositesmainlydependsonthequalityoftheinterfacebetweenthematrixandthereinforce

5、ment,whichdeterminedthewayoftheloadstransferfromthematrixtothecarbonfiber.Theimprovementoftheinterfacialadhesionstrengthbetweenthecarbonfiberandpolymermatrixisakeyfactortoimprovemechanicsperformanceofcompositematerials.02ChallengeoftheinterfaceCompositeinterfacephas

6、eThesurfaceofcarbonfiberonlycontainselementsofC,HandO.Hydroxylandcarbonylgrouponcarbonfiberwithoutsurfacetreatmentonlyaccountforabout16.5%Therearejusttoolittleamountofpolargroupsonthesurfacewhichmakesitchallengingtocreatthebondingbetweencarbonfiberandthematrixresin.

7、03MethodstoenhancetheadhesionFirst,preventtheformationofweakinterfacelayer.①theimpuritiesattachedtothemoldreleaseagent;②theagingoftheinterfacelayerformedwhentheoxidelayer,hydratelayer;③thesubstrateisnotfullyinfiltratedandboundbytheairlayer;…….Howtoincreasetheadhesio

8、nbetweenCFandresin?03MethodstoenhancetheadhesionSecond,thesurfacemorphologyissuitableforbonding.Theincreaseofsurfaceroughnessisbeneficialt