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1、AdditivesTrainingCourse助劑培訓課程Presentedby:ProcessEngineeringTeam主講：工藝工程BeckersAdditivesFunction助劑作用Modifypaintorfilmpropertiesorbehavior.改變油漆漆膜特性；Normallyusedatlowlevels.正常情況下用量低；Manydifferenttypesavailable,alsomanydifferentproductswithinatype.很多種類型的助劑，同一類型有很多不同的產(chǎn)品（如流平劑）Oftenhelponeproperty,buthu
2、rtanother.常幫助改良一個特性，但傷害到另一個特性。Mostimportantpartofformulationyetisthemostdifficult.最重要的配方部份也是最困難的；BeckersTypesofAdditives助劑的類型Surfactants表面活性劑Pigmentdispersants顏料分散劑Rheologymodifiers觸變助劑Defoamers/antifoams消泡劑Corrosioninhibitors防腐蝕劑Adhesionimprovers附著力增進劑Photostabilizers光引發(fā)劑Flattingagents平整劑Becker
3、sTypes,continued助劑類型（繼續(xù)）Driers干燥劑Anti-skinningagentsandantioxidants防起皮劑和抗氧化劑Slipaids滑爽劑Antistaticagentsandconductivityadditives抗靜電助劑和導電助劑Flameretardants阻燃劑Intumescentagents(improvefireresistance)膨脹劑Biocides生物助劑（防霉、防腐和殺菌）BeckersSurfactants表面活性劑Surface-activeagents表面活性劑Havegroupsofoppositepolarity
4、orsolubilityonthesamemolecule有相反極性的基團或可溶性體現(xiàn)在相同的分子結(jié)構(gòu)。Theyareclassifiedbasedonthechargeonthepolarheadgroup:-Anionics~~~~~~~~(-)陰離子-Cationics~~~~~~~~(+)陽離子-Nonionics~~~~~~~~~()非離子-Zwitterionics~~~,~~~~(+)(-)BeckersSurfactantsWiderangeofchemistries,structures,andpropertiesSomepolymersactassurfactant
5、sAfewsurfactantswillreactintothefilmduetoOHgroups,doublebonds,etc.WiderangeofapplicationsSurfactantApplicationsPaintsurfacemodificationWettingandsolubilizationEmulsificationDispersingFoaminganddefoamingConductivityandantistaticadditivesPaintSurfaceModificationUsesurfactantsandsurfactant-likeolig
6、omersandpolymerstoreducesurfacetensionandmakesurfacemorehomogeneous(theadditiveconcentratesatthesurface).Theseadditivescanimproveflowandleveling,increasecraterresistance,andpreventorreduceotherdefectssuchasdewetting,Bénardcells,floating,etc.PaintSurfaceModifiers:Silicones硅油類Byk-300series(300,301
7、,302,etc.)-reduces.t.,improveleveling-polyethermodifieddimethylsiloxanecopolymers.Byk-306hasbeenaffectiveatreducingcraters,buthasalsocausedthem.DC-200-siliconeoilProblemswithsilicones-cancausecraters,difficulttoimpossibletor
