re: protec4ve coa4ngs for absorbent & non absorbent surfaces · 2020. 1. 10. · • standards...
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CeracoatSurfaceMechanicsRe:Protec4veCoa4ngsforAbsorbent&
NonAbsorbentSurfaces
We<ngThedegreetowhichaliquidspreadsonasolidwhenitcomesintocontactwithit.
Onemeasureofwe8ngisthecontactangle.
Completewe8ngisreferredtoasspreading.
CERACOATINHIBITSSURFACEWETTING.
• We8ngisthepenetraFonofasurfacebyaliquidorgas.
• Theamountofwe8ngisquanFfiedthroughmeasurementofthecontactangleoftheliquidorgasthroughtheliquid,wherealiquid/vaporinterface
• meetsasolidsurface.
CeracoatSurfacePhysicsContactAngle"ThecontactangleisconvenFonallymeasuredthroughtheliquid,wherealiquid/vaporinterfacemeetsasolidsurface.ItquanFfiestheabsorpFoncapacityofasolidsurfacebyaliquidviatheYoungequaFon."Ifthecontactangleislow,theliquidlies"flat"onasurfaceandadheresonitorpenetratesit.Ifthecontactangleishigh,theliquidformsadropletorballandthecontactwiththesurfaceissmall,sothatliquidwon’tadhereto,orpenetrate,thesurface,duetolackofspreading.
CearacoatTes4ngProtocolAcceleratedWeathering-ASTMG154• Acceleratedweatheringsimulatesdamagingeffectsof
longtermoutdoorexposureofmaterialsandcoa4ngs.• Scope:• Standardsinclude:ASTMG154,ASTMD4329,ASTMD4587,
ISO4892• Theeffectisbeingmeasuredbyexposingtestsamplesto
varyingcondiFonsofthemostaggressivecomponentsofweathering-ultravioletradiaFon,moistureandheat.
• ThetestchamberusesfluorescentlampstoprovidearadiaFonspectrumcenteredintheultravioletwavelengths.MoistureisprovidedbyforcedcondensaFon,andtemperatureiscontrolledbyheaters.
• Source:AmericanSocietyforTesFngandMaterials(ASTM),
CeracoatTes4ngProtocolResults
Higher contact angle equals greater UV protection! Ceracoat delivers the protection you need!