Interdiffusion of Phenoxy and Polyethersulfone Thermoplastics in RTM6 Epoxy Resin : Thermoplastics Solubility，第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）-中国聚合物网,论文下载

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

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关键词：

rtm6 epoxy resin thermoplastics blends morphology interdiffusion
composites

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所属学科：

分子表征

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第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）

简介：

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

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2013-06-28 16:09:09

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