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1、J.Am.Ceram.Soc.,88[3]540–546(2005)DOI:10.1111/j.1551-2916.2005.00121.xJournalTheEffectofIonicSurfactantAdsorptionontheRheologyofCeramicGlazeSuspensionszPreechaPanyaandEricaJ.WanlessSchoolofEnvironmental&LifeSciences,TheUniversityofNewcastle,Callaghan,NSW
2、2308,AustraliaOrn-anongArqueroDepartmentofChemistry,FacultyofScience,ChiangMaiUniversity,ChiangMai50200,Thailand,wGeorgeV.Franks*ChemicalEngineering,TheUniversityofNewcastle,Callaghan,NSW2308,AustraliaTherheologicalbehaviorofceramicglazesuspensionscontai
3、n-inaggregation,rapidsedimentation,andhighviscosities.Re-inglimestone,quartz,feldspar,andkaolin,hasbeenimprovedpulsionresultsinstablesuspensionsthathavelowviscositiesbytheadditionofeitheracationic(cetylpyridiniumchloride,(particlesremainasindividualsanda
4、resuspendedforextendedCPC)orananionic(sodiumdodecylbenzenesulfonate,SDBS)periodsduetoBrownianmotion).surfactant.AdditionalstabilityandlowerviscositycanresultInmanyceramicglazes,themajorcomponentsarelimestonefromeitherelectricaldoublelayerrepulsionorsteri
5、crepulsion(CaCO3),feldspar(KNaOAl2O36SiO2),quartz(SiO2),anddependingonthesurfactanttype,concentration,ionicstrength,kaolin(Al2O32SiO22H2O).ThestabilityandrheologyoftheandpH.Underdosingmayresultinhighviscosityduetochargeceramicglazeslipareimportanttoc
6、ontrolthevariousstagesofneutralityandhydrophobicattractionbetweenparticleswhiletheceramicglazingprocess.Slurrystabilityisvitalsincetheset-overdosingmayresultinhighviscositypossiblyduetomicellestlingofparticlesresultsinpoorperformanceandproducts.inthesolu
7、tion.ThesituationisparticularlycomplicatedforControloftherheologicalbehavioroftheslipisparticularlyglazescontaininglimestoneandanionicsurfactantatmoderateimportantduringtheapplicationprocessessuchasspraying,1,15–17tolowpHwherecalciumcarbonateissoluble.Th
8、eanionicdipping,andwaterfalltechniques.Theadditionofasurfactantandcalciumionscanformcomplexesthatarepoorlysurfactantasadeflocculantcanbeusedtostabilizeceramic1,6,7,18–2115,17solubleandstronglyadsorbtothesurfaceoftheparticle
