Small Amount of Functionalized Nanosilica with Dramatic Enhanced Fracture Toughness of Epoxy Matrix for Large-scale Applications，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

Small Amount of Functionalized Nanosilica with Dramatic Enhanced Fracture Toughness of Epoxy Matrix for Large-scale Applications

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Functionalised nanosilica Particle-reinforcement Fracture toughness

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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：

Aswidelyusedthermosettingpolymers,epoxyresinshaveseveraluniquecharacteristics,highadhesivestrength,highstrengthandhardness,excellentchemicalandheatresistance.Epoxieshavebeenwidelyusedinvariousindustrialapplications,particularlyasadhesivesforbondingandasmatrixresinsforproducinghigh-performancefibrereinforcedcomposites.However,mostcuredepoxysystemsshowlowfracturetoughness,poorresistancetocrackinitiationandpropagation,andinferiorimpactstrength.Researchshowsnano-particlessuchasnanosilica,halloysite,nanoclay,andnanotubecanreinforcefracturetoughnessoftheepoxy.Whennano-particlesareusedasmodifiersinepoxies,ahomogeneousdispersionisrequiredinordertoachievethenano-phasestructure.Astheparticlestendtoagglomerate,specialtechniqueshavehadtobedevelopedandusedtoachieveahomogeneousparticledistribution,includingphysicalandchemicalmethods.Inthisstudy,weexperimentallyreportthesimplemethodtoenhancedfracturetoughnessofepoxycompositesbyusingasmallamountofcommercialisedfunctionalnanosilicabymechanicalmixing.Nanosilicaswithaminoandepoxidefunctionalgroupsshowstronginterfacesinepoxycompositestosuppressaggregationandenhanceresin-wettability,furtherenhancedfracturetoughnessofepoxycomposites.Comparedwithpreviousresearch,toachievethesameKICvaluesorsimilarenhancementratio,smallamountofnanosilicacontentisneeded.Duetocommercialavailabilityandcheappriceofrawmaterialandsimplefabricationmethod,thosesystemshavethescale-uppotential.

作者：

W. Han ,J. C. Zhao , C. B. Zhao, Y. H. Tang

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2013-07-04 16:38:49

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