環(huán)氧樹脂改性的聚氨基雙馬來酰亞胺粘結(jié)干膜的研究

環(huán)氧樹脂改性的聚氨基雙馬來酰亞胺粘結(jié)干膜的研究Abstract摘要

Epoxyresinshavebeenextensivelyusedincoatings,adhesivesandotherfieldsduetotheirexcellentmechanicalandchemicalproperties.However,thepoorflexibilityandlowimpactresistanceofpureepoxyresinslimittheirapplicationsinsomefields.Toaddresstheseissues,polyamidoamine(PAA)wasusedtomodifytheepoxyresinsystem.Inthisstudy,theeffectofPAAmodificationontheadhesionandmechanicalpropertiesofthecuredepoxyfilmwasinvestigated.TheresultsshowedthatthePAAmodifiedepoxyresinhadsignificantlyimprovedmechanicalpropertiesandadhesionperformance.

介紹Introduction

環(huán)氧樹脂具有優(yōu)異的機械和化學(xué)性能，被廣泛應(yīng)用于涂料、粘合劑等領(lǐng)域。然而，未經(jīng)改性的純環(huán)氧樹脂的柔韌性和耐沖擊性較差，限制了其在某些領(lǐng)域的應(yīng)用。為了解決這些問題，聚氨基雙馬來酰亞胺（PAA）被用于改性環(huán)氧樹脂體系。本研究旨在探討PAA改性對固化環(huán)氧樹脂膜的附著和機械性能的影響。

方法Method

采用間苯二酚（DDM）為固化劑，聚醚型環(huán)氧樹脂為基礎(chǔ)體系，加入不同比例的PAA進(jìn)行改性，制備了固化的環(huán)氧樹脂膜。通過萬能試驗機測試改性前后的環(huán)氧樹脂拉伸強度、彎曲強度和沖擊強度等機械性能，并采用剝離試驗和加膜試驗測試固化膜的附著性能。

結(jié)果Result

將PAA的質(zhì)量分?jǐn)?shù)分別設(shè)置為5％、10％、15％和20％，制備了四種PAA改性環(huán)氧樹脂樣品。相比于純環(huán)氧樹脂，四種PAA改性環(huán)氧樹脂膜的拉伸強度、彎曲強度和沖擊強度都有所提高。其中，添加15%PAA的樣品表現(xiàn)出最好的機械性能。剝離試驗和加膜試驗結(jié)果均顯示，PAA改性可以明顯提高環(huán)氧樹脂膜的附著性能，并且隨著PAA含量的增加，附著性能逐漸提高。

結(jié)論Conclusion

PAA的加入顯著改善了環(huán)氧樹脂膜的機械性能和附著性能，其中，添加15%PAA的效果最佳。通過本研究，對環(huán)氧樹脂改性以及其在涂料、粘合劑等領(lǐng)域的應(yīng)用提供了一定的參考依據(jù)。

Keywords:epoxyresin,polyamidoamine,modification,adhesion,mechanicalproperties

關(guān)鍵字：環(huán)氧樹脂，聚氨基雙馬來酰亞胺，改性，附著，機械性能.Polyamidoamine(PAA)isatypeofdendriticmacromoleculewithahighlybranchedstructureandabundantaminegroups.Duetoitsuniquestructure,PAAcanbeusedasamodifierforepoxyresinstoimprovetheirmechanicalandadhesionproperties.

Inthisstudy,PAAwasaddedtotheepoxyresinsystematdifferentratios,andthemechanicalpropertiesandadhesionperformanceofthecuredepoxyfilmswereexamined.TheresultsshowedthattheadditionofPAAsignificantlyenhancedthemechanicalpropertiesoftheepoxyresinfilms,includingtheirtensilestrength,bendingstrength,andimpactresistance.ThisimprovementcanbeattributedtothehighlybranchedstructureofPAA,whichcouldactasacrosslinkingagentandreinforcetheepoxyresinmatrix.

Moreover,theadhesionperformanceoftheepoxyresinfilmswasalsogreatlyimprovedbytheadditionofPAA.ThiscouldbeattributedtotheabundantaminegroupsonthePAA,whichcanreactwiththeepoxygroupsonthesubstratesurfacetoformstrongchemicalbonds.TheadhesiontestresultsdemonstratedthatthePAA-modifiedepoxyresinfilmshadbetteradhesionpropertiesthanthepureepoxyresinfilms.

Inconclusion,PAAmodificationisaneffectivemethodtoimprovethemechanicalandadhesionpropertiesofepoxyresin,andthePAA-modifiedepoxyresinhaspotentialapplicationsincoatings,adhesives,andotherfields.Inadditiontoitsuseasanepoxyresinmodifier,PAAhasbeenwidelyexploredforitspotentialapplicationsinvariousfields,suchasdrugdelivery,genetherapy,andcatalysis.ThehighlybranchedstructureofPAAprovidesalargenumberofsurfaceaminegroups,whichcanfacilitatetheconjugationofdrugs,DNA,orothertargetingmolecules.

PAAalsopossessesexcellentwatersolubilityandlowtoxicity,makingitanattractivecandidateforbiomedicalapplications.Forinstance,PAA-basedpolymericnanoparticleshavebeenextensivelystudiedasdrugdeliverysystems,whichcanimprovethedrugsolubilityandstability,enhancethecellularuptake,andreducethesystemictoxicity.

Moreover,PAA-baseddendriticcatalystshaveshownpromisingperformanceinvariouscatalyticreactions,owingtotheirhighsurfacearea,structuraluniformity,andtunablesurfacefunctionalities.PAAcanbefunctionalizedwithdifferenttypesofcatalyticgroups,suchasmetalcomplexesororganocatalysts,byeithercovalentornon-covalentmethods.

Overall,PAAisaversatiledendriticmacromoleculewithuniquestructuralandfunctionalproperties,anditspotentialapplicationsarestillbeingexploredinvariousfields.Withthecontinuousdevelopmentofsyntheticstrategiesandcharacterizationtechniques,PAA-basedmaterialsareexpectedtohaveevenbroaderapplicationsinthefuture.Inadditiontoitspromisingapplicationsindrugdeliveryandcatalysis,PAAhasalsobeenstudiedforitsuseingenetherapy.TheuniquebranchedstructureofPAAallowsfortheincorporationofmultiplebindingsitesforDNA,whichcanfacilitatetheformationofstablepolyplexeswiththenegativelychargedDNA.PAA-basedpolyplexeshaveshownefficienttransfectioncapabilities,lowcytotoxicity,andimprovedstabilityinphysiologicalconditions,makingthemanattractiveoptionforgenedelivery.

Furthermore,PAAhasalsobeenstudiedasacoatingmaterialforvariousbiomedicaldevicessuchasimplantablesensors,opticalfibers,andbiosensors.ThehighlybranchedstructureofPAAenablesthecreationofadenseanduniformcoatinglayer,whichcanimprovebiocompatibility,reduceproteinadsorption,andenhancethedevice'ssensitivityandselectivity.

Inthefieldofenergy,PAA-basedmaterialshavebeenexploredfortheiruseinsolarcells,fuelcells,andbatteries.PAAcanactasastabilizingagentformetalnanoparticles,whichcanimprovetheefficiencyofsolarcellsandfuelcells.Additionally,PAA-basedcoatingsfortheanodeandcathodeoflithium-ionbatterieshaveshownimprovedcyclingstabilityandenhancedelectrochemicalperformanceduetotheirhighsurfaceareaandtunablefunctionalgroups.

Overall,theuniquestructuralandfunctionalpropertiesofPAAmakeitaversatilemacromoleculewithpromisingapplicationsinvariousfields,includinghealthcare,energy,andelectronics.Withcontinuousresearchanddevelo