Effect of Nanocomposites Coatings on Exterior Performance of Bamboo during Aging

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摘要 Bamboodeteriorationcausedbylightbecomesasignificantproblemasapplicationofbambooextendsfromindoortooutdoor.Thecolorandroughnessofbambooaretwoimportantexteriorperformances.ThisstudyfocusedonUVresistantnanocompositescoatingsforexterioruseandwhataimedtofindaformulationwhichcouldenhancethedurabilityofbamboo.Fourkindsoffilm-formingmaterialsandfourkindsofnanoparticleswereusedtoimprovebambooexteriorperformance.Thecolorandroughnessofnanocompositescoatingsweremeasuredduringacceleratedweathering.Artificialagingtimewas174hatthetemperatureof50℃.TheexperimentshowednanocompositescoatingshadsignificantimprovementinUV-shieldingandnearlyallthesamplespresentedadarkeningtendencyinΔL*andincreasingtendencyinΔa*,ΔE*andΔRa.TheorthogonalexperimentobtainedtheleastchangeincolorandRawhichcouldbeachievedwithnanocompositescoatingmadebymelamineresinandTiO2whena*wasconsideredasanimportantindex.Film-formingmaterialwastheonlyfactorwhichhadsignificantinfluenceoncolorandroughnesswhena*wasnotconsideredasimportantindex,thenmelamineresinwasthebestchoice.
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出版日期 2012年10月03日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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