Polybutylacrylate／poly （methyl methacrylate） Core-Shell Elastic Particles as Epoxy Resin Toughener：Part Ⅱ Toughness on DGEBA／DDM system-中国期刊网

摘要 Mechanicalpropertiesofepoxyresinwereinvestigatedbyaddingcore-shellelasticparticles(CSEP).Theresultsindicatedthatoptimizedcore-shellratiowas60/40andtheloadingvolumeofCSEPwas10phr(perhundredpartsofepoxyresinbyweight).Theimpactstrengthofmodifiedsystemsincreasedapparentlywiththedecreaseofcoresizes.However,theshearingstrengthchangedgentlywiththeparticlesizes.CSEPwithlightlycrosslinkedrubberycoreshowedmoreeffectivenessontoughnessthanothers.Withsolutionblending,CSEPcouldbedispersedinepoxymatrixwell,andthemorphologiesofdispersedrubberdomainswerecontrolledperfectlybyCSEPwhosestructurewaspredesigned.Acavitation-shearingbandtoughnessmechanismwasobservedfromtheSEMmicrographsoffracturesurface.Italsowasfoundthatthedeformingtemperature(DT)ofmodifiedepoxydidnotdeclineapparently.

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Polybutylacrylate／poly （methyl methacrylate） Core-Shell Elastic Particles as Epoxy Resin Toughener：Part Ⅱ Toughness on DGEBA／DDM system

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Polybutylacrylate／poly （methyl methacrylate） Core-Shell Elastic Particles as Epoxy Resin Toughener：Part Ⅱ Toughness on DGEBA／DDM system

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