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Interdiffusion of Phenoxy and Polyethersulfone Thermoplastics in RTM6 Epoxy Resin : Thermoplastics Solubility

資料類型：

PDF文件

關(guān)鍵詞：

rtm6 epoxy resin thermoplastics blends morphology interdiffusion
composites

資料大小：

105K

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：

Epoxy-basedcarbonfibercomposites(CFC)arerapidlygainingbroadacceptanceinaeronauticsapplications,includingstructuralparts,becauseoftheweighttheyprovide.ResinTransferMolding(RTM)isanattractiveprocessingtechniqueforsuchapplicationsbecauseitallowsforcomplexshapesanddimensionalaccuracy.EpoxyCFCsuffersfromtoughnessissues,whichcanbealleviatedbytheadditionofthermoplastictougheners.DuetoresinviscositylimitationsimposedbyRTM,tougheningofcompositematricesbyadditionofhighmolecularweightthermoplasticcanonlybecontemplatedviainsitudissolutionofthethermoplasticintroducedinthecompositepreform.TheaimofthisstudyistodemonstratethattheobtainedmicrostructureafterReactionInducedPhaseSeparation(RIPS)ofPolyethersulfone(PES)andPhenoxyinHexFlowRTM6epoxyresincanbeexploitedtoreinforcethermosetcompositematrices.ThefirststepconsistsinevaluatingthedissolutionofPESandPhenoxyfilamentsfromtheirsolubilityintheRTM6precursors.InterdiffusionbetweentheresinprecursorsandthermoplasticisthenassessedinasimplifiedsystemconsideringasinglethermoplasticfilamentincontactwithRTM6byopticalmicroscopycoupledwithRamanspectroscopy.ThemicrostructuresresultingfromRIPSareevaluatedbyScanningElectronMicroscopy(SEM).AcompositepanelwithapreforminterleavedwithbothsolublethermoplasticfilmsisalsoproducedbyRTMtoinvestigatethemechanicalproperties.ApreferentialdissolutionofthelowerTgPhenoxyascomparedtoPESisdemonstrated.Moreover,whilephaseinversioncaneasilybeavoidedforappropriatePhenoxyamountsandadaptedtemperatureprofiles,largercompositioninhomogeneitiessubsistwithPES,whichareresponsibleforpoormechanicalproperties,includingtheGic.

作者：

P. V. Velthem , W. Ballout, D. Dumont, B. Coulon, M. Sclavons, C. Bailly

上傳時(shí)間：

2013-06-28 16:09:09

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