BYK - Freytag - Additive Selection for WB_EP.pdf

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1、Additiveselectionforwater-basedHeavyDutyCoatingsEuropeanCoatingsShow2009AndreasFreytag,EndUseManagerProtectiveCoatings,NurembergApril1st,2009EpoxySystems–DevelopmentTrendsHighsolidsystems•basedonliquidorsolid/liquidblendsofmainlybisAtyperesins•directlypolymerizedsemisolidbisAtyperesinsinsol

2、utionSolvent-freesystems•basedonliquidbisAtypeand/orbisFandA/Fblends•reactive/nonreactivediluentsWater-borneEpoxy•areaofnewdevelopments(selfemulsifying/dispersions)•expandingintoapplicationswheresolvent-bornehasbeendominatingfordecades(e.g.HeavyDuty)Solventreductionandwaterareachallengefort

3、hepaintformulatorrequiringspecificadditivestoadjustpaintproperties!Page2/AndreasFreytag,HeavyDutySolutionsFormulatingwater-borneEpoxiesFillerstsnseamTalcilicA-SnigicMicatiPncaorgtserrOnBariumsulphateoeesmidivigidxZepxioinpoMcpigndomodheIrm.osniupoptsnlyhapteahitosTpEpoxy+AminehatesAdditives

4、tsnelvoSrsemafoeDFlashrustinhibitorrteaWaxesWLevelingntsygeololvDheo&WR-soCAdhesionpromoterPage3/AndreasFreytag,HeavyDutySolutionsAdditiveSelectionistheChallenge
Foamingduringproductionandapplication
Pigmentwetting/dispersing/stabilizing
Flocculation/Gloss
Substratewetting
Surfaceflow/level

5、ing
Cratering/fisheyes
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…….Page4/AndreasFreytag,HeavyDutySolutionsAdditiveSelection–AModularApproachAdditiveSelectionforWBepoxysystemsStep1Step2AdditiveselectionRawmaterialselectionDefoamerresin/hardenerSurfacepigmentsW&DfillerRheologyco-solventsothersStep5Step3Step4Mechanic

6、altestingAdditiveevaluationCorrosiontestinghardnesscompatibilitysaltspraymandrelbendingstoragestabilitycont.condensationimpactresistanceglosswaterimmersionadhesionrelevantperformanceweatheringPage5/AndreasFreytag,HeavyDutySolutionsStep1RawMaterialSelection–water-basedEPPrimerPar

7、tAResin:LowviscousliquidbisphenolAresinAradur*398630.8EEW=190g/EquiDemin.Water15.0Hardener:FumedSilica0.7modifiedpolyamineadductAEW=415g/EquiTalkum13.0Crosslinkratio=1/0,85Filler13.2(resin/hardener)TiO27.3Application:AirlesssprayAdditivePackage0–2.02coat