简介：Atypeofself-cleaningpre-coatedsteelsheetwithexcellentself-cleaningperformancewasdevelopedusinghydrophilicsurfacetreatmenttechnology.Tounderstandtheself-cleaningpropertiesofthispre-coatedsteelsheetinanindustrialenvironment,theJiangjinnaturalenvironmentalteststationwaschosenastheoutdoorexposuretesttobeconducted,andtheself-cleaningperformanceofthesteelsheetwasstudiedbymeasuringthewatercontactangle,stainresistancefactor,colordifference,andglossofthesteelsheetduringtheoutdoorexposuretest.Thewatercontactangleoftheself-cleaningsteelsheetquicklydecreasedfrom84°to29°duringtheoutdoorexposuretest,andthesteelsheetshowedexcellenthydrophilicproperties,whichwerebeneficialtothespreadofraindropsanddetrimentaltotheaccumulationofthesurfacepollutants.Afteranoutdoorexposureof12months,theself-cleaningsteelsheethadahigherstainresistanceandcleanersurfacethanthecomparisonsamplesheet,demonstratingitsexcellentself-cleaningproperties.Moreover,thecolordifferenceandglossrateoftheself-cleaningsteelsheetweresimilartothoseofthepre-coatedsteelsheetwithouthydrophilicsurfacetreatment.Therefore,thehydrophilicsurfacetreatmenttechnologyusedinthisstudydidnotaffecttheanti-agingpropertyoftheself-cleaningsteelsheet.