粉末涂料中的低固化应用 – 特别关注配方.pdf

1、Low Cure Applications in PowderCoatingsWith Emphasis on FormulationSeptember 2024,Derick A Forcha,End-use SpecialistAgendaSeptember 2024Page 2Trends,Opportunities&ChallengesFormulation StrategyCatalyst SelectionAdditive Selection/DSC AnalysisKey TakeawaysDerick Forcha-Low Cure Applications in Powder

2、 CoatingsTrendsSeptember 2024 Derick Forcha-Low Cure Applications in Powder CoatingsPage 3Photo Credit:BYK-USA In our view the market for low cure applications in powdercoatings,will continue grow.OpportunitiesPage 4Acid/HydroxylResinAcid polyestersCrosslinkerHAA-OH FunctionalPolyestersCrosslinkersB

3、lockedisocyanatesUretidonesCatalyst-YesAcid/EpoxyResinsAcid PolyesterGMA acrylicCrosslinkersEpoxy resin/TGICCatalysts-YesEpoxyResinsCrosslinkersDICYPhenolicCatalyst-YesQuaternaryAmmonium saltsUnsaturatedSystemsIncrease opportunity for low cure Systems150C 220C140C 200C120C 210C115C 150CSource:(Modif

4、ied)Merfeld,G.et al.120C Cure,Durable,corrosion protection for temperature sensitive substrates,01/28/2005 https:/apps.dtic.milSeptember 2024 Derick Forcha-Low Cure Applications in Powder CoatingsChallenges of Low Cure Powder CoatingsSeptember 2024Derick Forcha-Low Cure Applications in Powder Coatin

5、gsPage 5120 C130 C135 C140 CVery difficult toProcess and StoreEasier to process and store,difficult to use on temp.sensitive substrateOptimal and Most appropriate temperaturewindow with current resin technologiesBetter BalanceEasy of good quality productExceptionPeroxide Cure ether UrethaneFormulati

6、on StrategyFormulation StrategySeptember 2024Page 7Starting point formulationStandard additives withDifferent melt pointsNo CatalystCure Window has shifted150C for 30 minsto 136C for 8 minsFormulators introducesCatalyst to reduce cureTime&TemperatureFormulator goes back to theFormula and choose addi