Lubrizol路博润

©TheLubrizolCorporation2007,allrightsreservedSurfaceModiferforCanCoatings©TheLubrizolCorporation2007,allrightsreserved2CanCoatingsMetalpackagingforfoodandbeveragesandsemiluxurygoods.(sweets,chocolate,cigarette)MetalpackagingforindustrialgoodsApplicationsmadeontinplate,tinfreesteelor/andAluminium.cans,tins,canisters,pails,closures,crown-corks,flexibletubes,foilsAerosolcans,drums,metalboxes©TheLubrizolCorporation2007,allrightsreserved3CanCoating©TheLubrizolCorporation2007,allrightsreserved4CancoatingsystemsTypicalformulationPolymersPigmentsCrosslinkerAdditivepackageWaxesFlowagents….SolventsPolymersystemsAcrylicPolyesterPhenolicEpoxyModifiedEpoxyAmino©TheLubrizolCorporation2007,allrightsreserved5CanCoatings-ApplicationmethodsCylinderCoating,compressed-airorairlessspraying2-piececansforbeverages,coatedafterformingRollerCoatingonbothsidesofthemetal-band3-piececansforfood,coatedbeforeforming©TheLubrizolCorporation2007,allrightsreserved6protectionofthecontentfromthesubstrateprotectionofthesubstratefromthecontentprotectionagainstmechanicalstressassistinfillingandtransportprocessesThefunctionofmetalpackagingcoatingsassistinmanufacturingofthecontaineropticalaspectreleaseproperties©TheLubrizolCorporation2007,allrightsreservedWhyDoSurfaceModifiersWork?•Foroptimumperformance,awaxmustmigratetothesurfaceofthecoating•Variableswhicheffectmigration:–Rawmaterialinteraction–Waxtype–Coatingviscosity/specificgravity–Curingconditions©TheLubrizolCorporation2007,allrightsreserved8MechanismsMigrationtheoriesandfilmthicknessconsiderations50µm10µmCoatingfilmSubstrate„Floating“„Overlay,BallBearing“©TheLubrizolCorporation2007,allrightsreserved9AfterStovingPriortoStovingFloatingEffectMigration/LayeringEffectMechanisms©TheLubrizolCorporation2007,allrightsreservedWaxDefinition•Awaxisalowmeltingorganicmaterialorcompoundwhichissolidatroomtemperatures.•Chemicallywaxesmaybehydrocarbons,alcohols,estersoffattyacidsetc.•Waxesaresolubleinorganicsolvents.Dependingonthewaxtypeelevatedtemperatures(~50-100°C)mightbenecessary.Waxesareinsolubleinwater.•Waxeshaveasharpmeltingpoint.Justafewdegreesbeyondthemeltingpointtheirmeltviscosityisverylowalready.©TheLubrizolCorporation2007,allrightsreserved11Waxes:Physical-ChemicalProperties•ChemicalStructure•Meltingpoint•Density•Hardness•Flexibility•Surfacetension•Meltviscosity©TheLubrizolCorporation2007,allrightsreserved12PolyethylenesPolypropylenesBis-AmidesLowMWPTFEsMostcommonWaxesforCoatingsCF2CF2nCH2CHnCH3CH2CH2nCH2CnONHNHCORR©TheLubrizolCorporation2007,allrightsreserved13ParticlesizeofwaxesLubrizolfinenessgradesforcoatings:•Standard:-F-fineness:Dv50≤9µm,Dv90≤22µm-SF-fineness:Dv50≤6µm,Dv90≤14µm-EF-fineness:Dv50≤5µm,Dv90≤9.5µm•New,optimizedforwoodcoatings:-LF-fineness:Dv50≤9µm,Dv90≤18µm•ForPowdercoatings:-MF-fineness:Dv50≤15µm,Dv90≤35µmRightselectionofthefinenessgradeisessentialtoachievethebestperformanceofthewax!©TheLubrizolCorporation2007,allrightsreserved141.Improvementofscratchresistanceandhardness2.Reductionofthecoefficientoffriction(COF)3.Glossretention4.Lessinfluenceonporosity5.Lessinfluenceonsterilisationprocess6.ReleasepropertiesThetechnicalrequirementsofthewaxinthecoating©TheLubrizolCorporation2007,allrightsreserved151.Improvementofscratchresistanceandhardnessdescribestheresistanceagainstmechanicalstresscanbeevaluatedthroughmeasurementsonthecoatedsubstratewith“Sheenscratchtester”AllLanco™waxtypesimprovethescratchresistanceofcoatedsurfaces.PEandPE/PTFEwaxesshowexcellentscratchresistance.©TheLubrizolCorporation2007,allrightsreserved16WaxesforimprovementofthescratchresistanceLanco1530SFmicronizedPEwaxwithlowinfluenceonporosityinepoxyphenolicsystems,Dv506µmLanco1588SFmicronizedpolyolefinewaxwithgoodglossretentioninepoxyphenolicsystems,Dv506µmLancoTF1780EFPTFEmodified,micronizedpolyethylenewaxwithlowinfluenceonporosityforepoxyphenoliccoatings,DV505µmLancoGlidd4832PTFEmodifiedwaxdispersionwithexcellentreductionofCOF,32%solidcontentLancoGliddPECcarnaubawaxmodifiedPE-dispersionwithexcellentglossretention,15%solidcontent©TheLubrizolCorporation2007,allrightsreserved17Scratchresistance0100200300400500600700800900SheenscratchresistanceinTL-07-030,5%waxcontentactivecontrolLanco1530SFLancoTF1780EFLancoGliddPECLancoGlidd4832Lanco1588SF©TheLubrizolCorporation2007,allrightsreserved18Measurementofscratchresistancewith„Sheenscratchtester“©TheLubrizolCorporation2007,allrightsreserved192.ReductionoftheCoefficientoffriction(COF)COFdescribethesmoothnessofthesurfaceItisaconditionwhichresultsfromthedecreaseoffrictiononthesurfaceCOFcanbemeasuredthrough„AltekTester“AllourwaxesdecreasetheCOFCarnaubawaxandmicrocrystallinewaxesshowedthebestreductionofCOF©TheLubrizolCorporation2007,allrightsreserved20WaxesforloweringtheCOFLancoGliddBTCarnaubawaxdispersionforwaterborneandsolventbornecoatingswithexcellentglossretention,15%solidcontentLancoGlidd2656Carnaubawaxprecipitationforsolventbornecoatingswithgoodscratchresistanceinepoxyphenolicsystems,10%solidcontentLancoGlidd4415Carnaubawaxdispersionwithexcellentglossretentionandlow