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Polyurethane Reinforced by Nano-fiber Supramolecular Aggregates  
Polyurethane Reinforced by Nano-fiber Supramolecular Aggregates
資料類型: PDF文件
關(guān)鍵詞: self-assembly  nano-fiber  molecule  reinforce  
資料大?。?/td> 105K
所屬學(xué)科: 分子表征
來源: 第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集(2013.6.2-6 武漢)
簡(jiǎn)介:
Molecularcompositeandin-situcompositematerialshaveadistinctadvantageincomparisonwiththetraditionalmacro-fiber(suchasglassfiber,carbonfiber,boronfiber,etc.)reinforcedmaterials.Thisisattributedtothefactthattheircompositeinterfaceisinthemolecularlevel,improvingsignificantlytheinterfacecompatibilityofphaseandmatrixandthemechanicalpropertiesofmaterialscl-4].Inthiswork,weintroducednano-fibrousaggregatedbygelatorl,3:2,4-dibenzylidenesorbitol(DBS)intoconventionalpre-polymerresin(e.g.modifiedpolyurethaneoligomers).Withtheprincipleofmolecularcompound,wemadepre-polymerresingelationfirst,thenpreparedmolecularcompositepolymerbyphotopolymerizationtoachievereinforcedpolymer.TheresultsshowedthatDBShadgoodgelpropertiesinoligomersresin,aggregatedsupramolecularnano-fibrousbyself-assembly.Bymeasuringthestress-straincurvesofmoleculecompositematerials,withdifferentconcentrationofDBSaggregatesinmodifiedpolyurethane.ItwasfoundthatstrengthandtoughnessofmoleculecompositematerialscanbeimprovedinthepresenceofDBSaggregating.ThestrengthofDBSaggregatereinforcedpolyurethanecompositefilmscouldbeincreasedtoabout10%.
作者: L. Jin, H. Wang, Y. J. Yang
上傳時(shí)間: 2013-06-25 13:15:14
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