ASTM C1545-2002(2007) 用高密度搅拌器使颜料和其他材料散入水基悬浮液的实施规范

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【英文标准名称】:PracticeforDispersingPigmentsandOtherMaterialsintoWater-BasedSuspensionswithaHighIntensityMixer
【原文标准名称】:用高密度搅拌器使颜料和其他材料散入水基悬浮液的实施规范
【标准号】:ASTMC1545-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C21.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thetraditionalmethodofpreparingglazesandslurrieshasbeentoaddstains(pigments),stabilizers,viscositycontrolagents,bactericides,andsoforth,tothepebblemillbatchalongwithnormalbatchmaterialssuchasclay,frit,quartz,feldspar,whiting(calciumcarbonate),zincoxide,opacifier,andsoforth.Thismethodhadthedisadvantageofovergrindingsomeofthematerialsofthebatchandundergrindingothermaterials.Whilepartofthedisadvantagecouldbealleviatedbydoubleortriplebatching(wherethepebblemillwasstoppedatoneortwopointsinthecycleandoneormorematerialsadded),thepracticewaslaborintensiveandnotalwayswellcontrolled.Anotherdisadvantageofthetraditionalmethodwasthatitwasnecessarytothoroughlywashoutthemillbetweenbatchesofdifferentcolors.Anobviousadvantage,however,wasthatsmallcomponentsofthebatch(suchaspigments)werethoroughlydispersedinthebatchandeventodayitisnecessarytousethisprocedurewhensmallquantitiesofstronglycoloredpigmentsaretobeused.Withtheadventofhighspeedintensivemixersusingarotatingshaft-mountedimpeller,itisnowtheusualpracticetoaddpigments,conditioners,andsoforth,tothebatchfromthepebblemillandaccomplishthesameuniformdispersionaswouldbethecaseifthepigmentsweremilledinratherthanx201C;stirredx201D;in.Inaddition,thepigmentstendtoyieldastrongercolorintheglazebecausetheyhavenotbeenovergroundinthepebblemill.Itisnotuncommontomakeareductionintheamountofpigmentneededtodevelopthedesiredcolorwhenthepigmentisstirredinratherthanmilledin.Anevengreaterbenefitisusingthex201C;stirredinx201D;techniqueisthatasinglelargebatchofabaseglaze(forexample,clear)canbemadebymilling,andindividualcolorsdevelopedbystirringappropriatepigmentsandconditionersintosmallamountsofthebaseglaze.Inthisway,alargepebblemillcanbededicatedtoclearbaseglazeandcleaningthemillbetweenbatchesisnotneeded.Glazestainsfrequentlyaretreatedwithproprietarymaterialswhichassistindispersingthestainintotheglaze.1.1Inpreparingceramicglazesandslurriesforuse,itisoftennecessarytoaddpigmentstodevelopadesiredfiredcolor,toincorporateviscositycontrolagentsfordeveloping,orprovidingtodevelopthedesiredthicknessoftheglazeontheware,toaddmaterialswhichstabilizethesuspension,controlbacterialgrowth,anddevelopthedesiredhardnessoftheglazeonthewaretoallowmovingandhandlingbeforefiring.Whileitisconvenienttoaddthesematerialstotheglazeorslurryinthedryform,itisoftenpossibletouseslurrieswherethesematerialsaredispersedinaslurryandtheslurrythenaddedtotheliquidglaze.Regardlessofthestateoftheadditions(dryorslurry),thedispersioncanbedoneefficientlyandeffectivelybytheuseofahighintensitymixer(sometimesreferredtoasadissolver)andtheprocedureusedisdescribedhere.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:83_040_30
【页数】:4P.;A4
【正文语种】: