用于透气、持久外墙建筑涂料的有机硅树脂.pdf

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1、Amanda(Dershem)SchmotzerChemist,Wacker Chemical CorporationSilicone Resinsfor Breathable,Long-Lasting Exterior Architectural PaintAgendaAgenda1.Background Mechanism forSilicone Breathability2.Study Silicone Resin inArchitectural Coatings3.Conclusions&Next StepsMechanism:Breathability&HydrophobicityM

2、echanism:Breathability&HydrophobicityCapillary Water UptakeWater Vapor Permeability3.21.5Water-borne Architectural Paintwith silicone resinWater-borne Architectural PaintAgendaAgenda1.Background Mechanism forSilicone Breathability2.Study Silicone Resin inArchitectural Coatings3.Conclusions&Next Step

3、sTestingTestingTests/MethodologyWater Vapor Permeability(ASTM D1653)Water Absorbance(Accelerated Weathering)Contact Angle(water)ObjectiveInvestigate silicone resinperformance againstacrylic latex binders andsilicone additivesCharacteristics of Acrylics/SiliconeLabelTypeIntended useSolidsMFFTAcrylic

4、Aacrylicinterior/exterior5015Acrylic Bacrylic esterexterior5014Acrylic Cacrylicpremium grade5010Acrylic Dstyrene acrylicmasonry5020S1siliconeexterior5413S2siliconeexterior6019S3silicone additiveexterior55naCommercial PaintsCom1Flat exteriorPremiumCom2Flat exteriorMidCom3Flat exteriorValueFormulation

5、sFormulations1:30%PVC Formulation2:60%PVC FormulationDC010_015_P6060%PVCppw(g)Water27.65Dispersant0.2Dispersant0.2Biocide0.3pH modifier0.1HMHEC thickener0.25Defoamer0.3Co-Solvent1TiO212CaCO321Talc10Total Grind:73.0Silicone Resin/Acrylic20Silicone additive or water3High Shear modifier4Total Let-Down2

6、7.0Total100.0DC010_015_P3030%PVCppw(g)Water29Dispersant0.2Dispersant0.2Biocide0.3pH modifier0.4HMHEC thickener0.1Defoamer0.3Co-Solvent1TiO212CaCO310.5Talc5Total Grind:59.0Silicone Resin/Acrylic34Silicone additive or water3High Shear modifier4Total Let-Down41.0Total100.03:30%PVC Formulationwith alter