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《低溫固化環(huán)氧粉末涂料與mdf粉末靜電噴涂工藝-研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、萬方數(shù)據(jù)ABSTRACTThethermosettingpolymerpowderscoatingisundergoingrapidgrowthasallecological，economicandenergyefficienttechnology．PowdercoatingspossessadvantagesoverconventionalcoatingsinthatnOpollutingsolventlossoccursonapplication，flammabilityandtoxicityaresubstantial
2、lyreduced，owingtotheuseofelectrostaticspray，littlematerialislostand，whatismore，duringbaking，energyconsumptioncanbereducedcomparedtosolvent-borneorwater—bornecoatings．Inthispaper，twokindsofepoxypowdercoatingswerepreparedbymeltingblendingofphenolicresin／alkalineaccel
3、eratorandmicronizeddicyandiarnide(Dicy)／2-methylimidazole(2-MI)ascuringsystems．Thefactorsthataffectthecuringreactionandmechanicalpropertiesofepoxypowdercoatingswereinvestigated，suchasamountofcuringagentandaccelerator．Then，thecuringreactionandcuringkineticsofthistwo
4、differentsystemswereinvestigatedbynon-isothermaldifferentialscanningcalorimetry(DSC)，andthecuringprocessWasdeduced．Atlast，theoptimumamountofthecuringsystemsandtheircuringconditionsweredetermined．Inaddition，theeffectofthetechnologicalparametersofelectrostaticsprayin
5、gformediumdensityfiberboard(MDF)ontheone-passtransferefficiencyofpowderwerediscussedbyresponsesurfaceanalysisandtheinfluencefactorsofcoatingflattingpropertywerestudiedpreliminarily．Theexperimentshowedthatfortheepoxy-phenolssystemtheoptimumamountsofphenolsandalkalin
6、eacceleratorwererespectively10％and1．0％．Forthissystemthebestcuringconditionswerecuring30minutesat120degreescentigrade．Andthecuredlayershadgoodmechanicalproperties．Withregardtotheepoxy—Dicysystem，theoptimumamountSofDicyand2-M1wererespectively2．5％andO．25％anditshouldbe
7、cured30minutesat130degreescentigrade．Asecondorderpolynomialempiricalmodelsoftheone-passtransferefficiencyofpowderwiththetechnologicalparametersofelectrostaticsprayingwassetupbyusingBox—Behnkenexperimentaldesigncombinedwithresponsesurfaceanalysis．Theeffectoftechnolo
8、gicalparametersontheone-passtransferefficiencyandtheirinteractionwerediscussed．Andtheoptimaltechnologicalparametersweredetermined．Withthespraying
