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1、復(fù)旦大學(xué)碩士學(xué)位論文有機/無機核-殼粒子增韌環(huán)氧樹脂的初步研究姓名:朱立元申請學(xué)位級別:碩士專業(yè):化學(xué)工程指導(dǎo)教師:鐘偉20070515論文獨創(chuàng)性聲明本論文是我個人在導(dǎo)師指導(dǎo)下迸行的研究工作及取得的研究成果。論文中除了特別加以標注和致謝的地方外,不包含其他人或其它機拇已經(jīng)發(fā)表或撰寫過的研究成果。其他同志對本研究的啟發(fā)和所傲盼貢獻均已在論文中作了明確的聲明并表示了謝意。作者簽名:二圭二丘眨日期:之羔勉口論文使用授權(quán)聲明本人完全了解復(fù)旦大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定。即:學(xué)校有權(quán)保留送交論文的復(fù)印件,允許論文被查閱和借閱;學(xué)??梢怨颊撐牡娜?/p>
2、部或部分內(nèi)容,可以采用影印、縮印或其它復(fù)制手段保存論文。保密的論文在解密后遵守此規(guī)定。作者簽名:導(dǎo)師簽名:日期:,主2幺紐復(fù)旦大學(xué)碩士論文有機無機核一殼粒子增韌環(huán)氧樹脂的初步研究ABS’rRACTEpoxyrcsinsarethermosetmaterialcombiningattractiveproperties,suchashiighstrengthandstiffness,excellentdimensional,thermalaswellasenvironmentalstabifities.Epoxy·basedmaterialsa
3、rebeingappliedasmatrixresinsofcoatings,adhesivesandcomposites.Thewell—knowndrawbackassociatedwiththeapplicationofhighlycross-linkedthermosettingpolymersisrelatedtotheftinherentbrittlenesswhichincreaseswithcrosslinkingdensity.Therearebundleoftougheningmethodsinventedinpast,
4、e.g.rubberparticle,thermalplasticsparticle,core—shellpolymerparticle,interpenetrationnetwork,thermalliquidcrystalpolymer,hyperbranchedpolymerparticles,etc.Thesemethodseitherinvolvedsignificantcostimpactorreductionofthestiffnessandglasstransfertemperatureofthematerial.Core·
5、shellpolymerandhyperbranchedpolymerhavegoodperformanceonepoxytougheningwithoutsignificantlycompromisethematerialstiffnessandglasstransfertemperature.Bothofthesetwopolymershavesimilarparticlestructure:1)astiffcore:coretakesmajorweightandvolumepercentofthewholeparticle,SOthe
6、impactsonthetoughenedepoxy’Smechanicalandthermalpropertiesaredeterminedbycoreproperty.2)Theshelloftheparticleis㈥softpolymerchain,thustheshellCarlplaythetougheningroletoepoxysystem.∞D(zhuǎn)esigntoaddtheepoxyfunctionalgroupsontheshellpolymer,makinggoodadhesivebetweentougheningpart
7、iclesandepoxymatrix.Thispaperdesigntograftpolymerfromnanosilicasurface,whichhavesimilarstructureascore-shellpolymerandhyperbranchedpolymer:1、Silicaparticleasthestiffcore∞“soft”polymerasshell.Inthispaper,effortsarepresentedtothreemajorportions:11Usingatomtransferradicaladdi
8、tion(ATRP)methodtograftPMMAfromsilicasurface.Throughthismethod,wegotsilicaparticleswithhi