wetting-and-dispersing-additives

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1、TECHNICALBACKGROUND/WETTINGANDDISPERSINGADDITIVES76WettingandDispersingAdditivesTEGO®DispersTECHNICALBACKGROUND/WETTINGANDDISPERSINGADDITIVES77Anyonewhohaseverstirredupsandverysmallparticlesizesbetween0.05theliquidpaintformulation.Itisalmostandwaterinab

2、ucketknowshowdiffi-and0.5µmcanimpartoptimumcolorimpossibletodothiswithoutusingwet-cultitistoformastable,homogeneousandprotection.Itisthereforenecessarytinganddispersingadditives.Thesead-mixturefromaninsolublesolidandatoreducethesizeofthepigmentsasditive

3、sareextremelyimportantfortheliquid.Asimilarprocessmustbemas-commerciallysupplied.Inthedispersioncoatingsindustrybecauseoftheirveryteredinthemanufactureofpigmentedprocesstheinsolublepigmentisbrokenwiderangeoffunctions.paintsandcoatings.Onlypigmentswithdo

4、wn,finelydispersedandstabilizedinThefunctionofwettinganddispersingadditivesWhilewettinganddispersingadditivesthescatteringpowerofthepigmentandfaceisverysmoothandthediffusecom-lowertheviscosityofapaintformulation,therefractiveindicesofthepigmentponentoft

5、hereflectionisverysmall.thatiscertainlynottheironlyeffect.Thisandbinders.InacoatingwithstrongPigmentparticlesorflocculateswhichclassofadditiveshasamajorinfluencehidingpower,thepigmentparticlesprotrudefromthesurfacedisturbtheonawiderangeofessentialcharac

6、ter-scattertheincidentlightsostronglyspecularreflection.Flocculatedpigmentsisticsoftheformulation:thathardlyanyofitreachesthesub-canalsoaffectleveling.Poorlevelingre-strate.Anyremaininglightreflectedducestheglossevenfurther.InasfarasColorstrength:Colors

7、trengthisameas-fromthesubstrateisthensostronglywettinganddispersingadditivesinhibitureoftheabilityofapigmenttoabsorbscatteredthatitnolongerreachestheflocculation,theyimprovetheglossofaincidentlightandcoloramedium.Ithaseye.Foracoatingtoscatterlightopti-c

8、oating.practicalimportanceincoloringwhitemally,aneven,finedistributionofpig-basepaints:thestrongerthetintingmentsstabilizedbydispersingadditivesFloodingandfloating:Thesephenom-agentthemorecost-effectiveitis.Theisessential.enaoccu