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ID:33433188
大小:7.80 MB
页数:69页
时间:2019-02-25
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1、ABSTRACTSuperhydrophobicsurfaceshavegreatapplicationsinmanyfieldsduetotheirexcellentwater-repellency.Atpresent,someinvestigationprogressesonthesuperhydrophobicsurfaceshavebeenachievedinmanyaspectssuchasfundamentaltheory,preparationmethod,andapplication,etc
2、.However,theicephobicityresearchesonsuperhydrophobicsurfacesarefewandnotsystemic.Thus,theicephobicityresearchesonsuperhydrophobicsurfacesneedtobereinforced.Inthispaper,onthebasisofsummarizingpreviousliteratures,theicephobicitieshavebeenstudiedonseveralkind
3、sofsuperhydrophobicsurfacesundertheconditionsofdroppingwatertoformiceandproducingcondensedwatertoformice.Theicephobicitymechanismshavebeenanalyzedanddiscussedbythecombinationofestablishingmodelsandobservingthemicrostructurecharacteristicsandwettabilitiesun
4、derbothcommonandcondensationconditions.Themaininvestigationcontentsandinnovationpointsarelistedasfollows:(1)Afacileandnovelmethodwasproposedtofabricateasuperhydrophobicsurfacewithmicro-nanobinarystructureonalowdensitypolyethylene(LDPE)substrate.Thewatercon
5、tactangleandslidingangleoftheas-preparedsuperhydrophobicLDPEsurfacewere155±2°and4°,respectively.Theicephobicitywasstudiedontheas-preparedsuperhydrophobicsurface,andtheresultsshowedthattheicephobicitiesoftheas-preparedsuperhydrophobicLDPEsurfacearebettertha
6、nsmoothLDPEsurfaceunderboththeconditionsofdroppingwatertoformiceandproducingcondensedwatertoformice.(2)TheicephobicitieswerestudiedforthefirsttimeonthesuperhydrophobicKummerowiastipulacea,Thaliadealbataleaf,andToreniafournieripetals.Forcomparasion,theiceph
7、obicitieswerealsostudiedonthesuperhydrophobicleavesofSalixbabylonicaandCannageneralis.TheexperimentalresutsshowedthattheicephobicitiesoftheKummerowiastipulaceaandThaliadealbataleafwerebetterthantheToreniafournieripetals,Salixbabylonicaleaf,andCannagenerali
8、sleaf.TheicephobicitydifferencesofthefivedifferentsuperhydrophobicplantII万方数据surfaceswereinvestigatedbyestablishingmodelsandobservingthesurfacemicrostructurecharacteristicsandthewettabilitiesunderboththecommo
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