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1、AdditivesTrainingCourse助剂培训课程Presentedby:ProcessEngineeringTeam主讲：工艺工程BeckersAdditivesFunction助剂作用Modifypaintorfilmpropertiesorbehavior.改变油漆漆膜特性；Normallyusedatlowlevels.正常情况下用量低；Manydifferenttypesavailable,alsomanydifferentproductswithinatype.很多种类型的助剂，同一类型有很多不同的产品（如流平剂）Oftenhelponeproperty,buthu
2、rtanother.常帮助改良一个特性，但伤害到另一个特性。Mostimportantpartofformulationyetisthemostdifficult.最重要的配方部份也是最困难的；BeckersTypesofAdditives助剂的类型Surfactants表面活性剂Pigmentdispersants颜料分散剂Rheologymodifiers触变助剂Defoamers/antifoams消泡剂Corrosioninhibitors防腐蚀剂Adhesionimprovers附着力增进剂Photostabilizers光引发剂Flattingagents平整剂Becker
3、sTypes,continued助剂类型（继续）Driers干燥剂Anti-skinningagentsandantioxidants防起皮剂和抗氧化剂Slipaids滑爽剂Antistaticagentsandconductivityadditives抗静电助剂和导电助剂Flameretardants阻燃剂Intumescentagents(improvefireresistance)膨胀剂Biocides生物助剂（防霉、防腐和杀菌）BeckersSurfactants表面活性剂Surface-activeagents表面活性剂Havegroupsofoppositepolarity
4、orsolubilityonthesamemolecule有相反极性的基团或可溶性体现在相同的分子结构。Theyareclassifiedbasedonthechargeonthepolarheadgroup:-Anionics~~~~~~~~(-)阴离子-Cationics~~~~~~~~(+)阳离子-Nonionics~~~~~~~~~()非离子-Zwitterionics~~~,~~~~(+)(-)BeckersSurfactantsWiderangeofchemistries,structures,andpropertiesSomepolymersactassurfactant
5、sAfewsurfactantswillreactintothefilmduetoOHgroups,doublebonds,etc.WiderangeofapplicationsSurfactantApplicationsPaintsurfacemodificationWettingandsolubilizationEmulsificationDispersingFoaminganddefoamingConductivityandantistaticadditivesPaintSurfaceModificationUsesurfactantsandsurfactant-likeolig
6、omersandpolymerstoreducesurfacetensionandmakesurfacemorehomogeneous(theadditiveconcentratesatthesurface).Theseadditivescanimproveflowandleveling,increasecraterresistance,andpreventorreduceotherdefectssuchasdewetting,Bénardcells,floating,etc.PaintSurfaceModifiers:Silicones硅油类Byk-300series(300,301
7、,302,etc.)-reduces.t.,improveleveling-polyethermodifieddimethylsiloxanecopolymers.Byk-306hasbeenaffectiveatreducingcraters,buthasalsocausedthem.DC-200-siliconeoilProblemswithsilicones-cancausecraters,difficulttoimpossibletor
