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Interfacial Micromechanics of Carbon Fiber Reinforced Polyphenylene Sulfide Composites  
Interfacial Micromechanics of Carbon Fiber Reinforced Polyphenylene Sulfide Composites
資料類型: PDF文件
關(guān)鍵詞: polyphenylene  sulfide  carbon  fiber  interfacial  micromechanics  microbond  
test  
資料大小: 112K
所屬學(xué)科: 分子表征
來(lái)源: 第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集(2013.6.2-6 武漢)
簡(jiǎn)介:
Interfacialmicromechanicalperformanceofcarbonfiberreinforcedpolyphenylenesulfide(PPS)compositeswasstudiedbymicrobondtestwhichhadbeenwellacceptedasthemostimportantmicromechanicaltestforevaluatingtheinterfacialpropertiesbetweenthefiberandmatrix.Anovelhomemadetestapparatuswhichisoperatedsimplywasemployedandadifferentmicrosamplepreparationmethodwasintroduced.ComparativetestsofvariousloadingspeedsweremadetoinvestigatetheinfluenceoftestingratesontheinterfacialshearstrengthofCF/PPSmicro-composite.Itwasfoundthattheinterfacialshearstrengthincreasedwithincreasingthefiberembeddedlengthatthespeedsbelow0.02mm/sandabove0.04mm/s,butituniformlydistributedalongtheinterfaceat0.02and0.04mm/s.Itisrecommendedtoperformthemicrobondtestinthetestraterangeof0.02-0.04mm/s,wheretheinterfacialshearstrengthdoesnotchangewiththeembeddedlengthandnosignificantdeviationsareobserved,thuscouldbetterreflectthetrueinterfacestrengthofthecomposite.Comparisonofinterfacialpropertiesofannealingtreatmentsamplesandatmosphericplasmatreatedcarbonfiber/PPScompositeswerealsoinvestigated.Theresultsshowedthattheapparentinterfacialshearstrength(rapp)valueofmicrodropletsincreasedfrom33.5+4.3MPato43.9+2.3MPaafterannealing.Moreover,plasma-modifiedCFwascharacterizedbyscanningelectronmicroscope(SEM)andX-rayphotoelectronspectroscopy(XPS).Itshowedthatthesurfaceroughnesswasimproved,andtheO/Catomicratiowasincreasedfrom16.2%t028.5%.Thoughhydrogenandcovalentbondingswereinducedatfiber/matrixinterface,therappvaluesofCFfiber/PPScompositesdecreasedt036.4+1.0MPawithatmosphericplasmatreatment,duetotheremoveofthesizelayercoatedonthesurfaceofCF.
作者: B. Y. Liu, X. J. Wang , S. R. Long, J. Yang
上傳時(shí)間: 2013-07-02 13:52:50
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