光固化超支化环氧丙烯酸酯的合成、改性与性能-研究

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1、万方数据光固化超支化环氧丙烯酸酯的合成、改性及性能研究Preparation，modificationandperformanceofUV—curablehyperbranchedepoxyacrylateAbstractHBEPhaslowviscosity，highsolubility，adhesionandhighreactionactivitybecauseofitsuniquecorestructureandalargenumberofterminatedepoxygroup，particularly

2、it’Ssuitableforphotosensitiveresinoligomer．Inthispaper，HBEPhasbeensynthesizedbyprotontransferpolymerization，thestructure，solubility，photophysicalpropertiesandmodificationofHBEPhavebeenstudyed．Radical-cationhybridultraviolet(UV)curingwillincreasethepolymeriza

3、tionrate，decreasetheoxygeninhibitioneffect，andenhancethemechanicalperformanceofcuredfilmowingtotheexistingofdoublebondsandepoxygroups．Inthispaper，HBEAhasbeensynthesizedbyHBEPwhichhasbeenmodificatedbyacrylicacid，hasbothofthedoublebondandtheepoxygroupbycontrol

4、lingtherateofcharge．Duringthesynthesisprocess，theacidvalueofreactionsystemhasbeenmeasuredtomonitorthereactionprocess．Andthereactionconditionshavebeenoptimized，thephotophysicalproperties，thermalpropertiesandUVcuringperformanceofHBEAhavebeenevaluated．Theresult

5、sshowthattheoptimumconditionsofthesynthesisofHBEA：thereactiontemperatureis100℃，theamountofcatalystis0．6％．significantfactorinfluencingofsynthesisisreactiontemperature．UVcuringrateofHBEAisr印id，andthehybridcuredfilmhasgoodmechanicalproperties．UVcuringproductoft

6、raditionalepoxyacrylatehasgoodmechanicalandelectricalperformance，ithasvariousinsufficientsintheapplication．Inthispaper，HBEAhasbeenmodifiedbypolyurethaneprepolymertoimproveabradabilityandthermalperformanceofthecuredfilmbyintroducingthehydrogenbondingandincrea

7、singerosslinkingdensity．Inthispart，thestructure，molecularweightanditsdistribution，photophysicalproperties，andtheUVcuringperformanceofthefinalproduct(TMHBEA)havebeenstudied．TheresultsshowthatthesolubilityofTMHBEAdecrease，themolecularweightis9000andthedistribu

8、tionisnarrow．HybridcuredfilmofTMHBEAhasbetterhardness，anti-wearbehaviorandthermalpropertythanHBEAunderthesamecondition．KeyWords：Photosensitiveresinoligomer；Hyperbranchedepoxyacrylate；Polyurethan