AATCC-6-2006-耐酸和耐碱色牢度

Copyright©2006AmericanAssociationofTextileChemistsandColorists16TM6-2006AATCCTechnicalManual/2007Developedin1925byAATCCCommit-teeRR1;revised1945,1952,1957;re-affirmed1972,1975,1978,1989,2006;editoriallyrevisedandreaffirmed1981,1986,1994,2001;editoriallyrevised1995,2004.RelatedtoISO105-E05andE06.1.PurposeandScope1.1Testspecimensareevaluatedforresistancetosimulatedactionofacidfumes,sizes,alkalinesizes,alkalinecleansingagentsandalkalinestreetdirt.Thesetestmethodsareapplicabletotex-tilesmadefromallfibersintheformofyarnsorfabrics,whetherdyed,printedorotherwisecolored.2.Principle2.1Thespecimensaresteepedinorspottedwiththerequiredsolutionsbymeansofsimplelaboratoryequipment.Thetestedspecimensareexaminedforchangesincolor.3.Terminology3.1colorfastness,n.—theresistanceofamaterialtochangeinanyofitscolorcharacteristics,totransferofitscolor-ant(s)toadjacentmaterials,orboth,asaresultoftheexposureofthematerialtoanyenvironmentthatmightbeencoun-teredduringtheprocessing,testing,stor-ageoruseofthematerial.4.SafetyPrecautionsNOTE:Thesesafetyprecautionsareforinformationpurposesonly.Thepre-cautionsareancillarytothetestingproce-duresandarenotintendedtobeallinclusive.Itistheuser’sresponsibilitytousesafeandpropertechniquesinhan-dlingmaterialsinthistestmethod.Manu-facturersMUSTbeconsultedforspecificdetailssuchasmaterialsafetydatasheetsandothermanufacturer’srecommenda-tions.AllOSHAstandardsandrulesmustalsobeconsultedandfollowed.4.1Goodlaboratorypracticesshouldbefollowed.Wearsafetyglassesinalllaboratoryareas.4.2Allchemicalsshouldbehandledwithcare.Usechemicalgogglesorfaceshield,imperviousglovesandanimper-viousapronduringdispensingandmix-ingofhydrochloricacid,aceticacidandammoniumhydroxide.4.3Aneyewash/safetyshowershouldbelocatednearbyandaself-containedbreathingapparatusshouldbereadilyavailableforemergencyuse.5.Apparatus,MaterialsandReagents5.1Beaker,250mL5.2Belljar,4L,withaglassplatebase5.3Evaporatingdish5.4GrayScaleforColorChange(see11.1)5.5Hydrochloricacid(HCl),35%5.6Aceticacid(CH3COOH),56%5.7Ammoniumhydroxide(NH4OH),anhydrousammonia28%(NH3)5.8Sodiumcarbonate(Na2CO3),anhy-drous,technical5.9Calciumhydroxide[Ca(OH)2],freshlypreparedpaste6.TestSpecimens6.1Thesemaybecutinanyconvenientsize.7.Procedure7.1AcidTests.7.1.1Spotthespecimenwiththehy-drochloricacidsolution(100mLof35%acidmadeupto1L,addacidtowater)at21°C(70°F),andthendrythespecimenatroomtemperaturewithoutrinsing.7.1.2Spotthespecimenwithaceticacid(56%)anddryitatroomtempera-turewithoutrinsing.7.2AlkaliTests.7.2.1Steepthespecimenfor2minat21°C(70°F)inammoniumhydroxide(28%anhydrousammonia)anddryitatroomtemperaturewithoutrinsing.7.2.2Steepfor2minat21°C(70°F)insodiumcarbonate(10%)anddryitatroomtemperaturewithoutrinsing.7.2.3Suspendthespecimenovera7.6cm(3in.)evaporatingdishcontaining10mLammoniumhydroxide(28%anhy-drousammonia)for24hina4Lbelljarplacedonaglassplate.7.2.4Spotthespecimenwithcalciumhydroxide,afreshlypreparedpaste,madebymixingthehydroxidewithasmallamountofwater,anddrythespecimen.Thenbrushthespecimentoremovethedrypowder.8.Evaluation8.1RatetheeffectonthecolorofthetestspecimensbyreferencetotheGrayScaleforColorChange(see11.1).Grade5—negligibleornochangeasshowninGrayScaleStep5.Grade4.5—changeincolorequivalenttoGrayScaleStep4-5.Grade4—changeincolorequivalenttoGrayScaleStep4.Grade3.5—changeincolorequivalenttoGrayScaleStep3-4.Grade3—changeincolorequivalenttoGrayScaleStep3.Grade2.5—changeincolorequivalenttoGrayScaleStep2-3.Grade2—changeincolorequivalenttoGrayScaleStep2.Grade1.5—changeincolorequivalenttoGrayScaleStep1-2.Grade1—changeincolorequivalenttoGrayScaleStep1.9.Report9.1Inreportingresultsofthesetests,statethereagentusedasgiveninthefol-lowingexample:“ThismaterialisinGrade...withre-specttocolorfastnesstohydrochloricacid,etc.”10.PrecisionandBias10.1Precision.Precisionforthistestmethodhasnotbeenestablished.Untilaprecisionstatementisgeneratedforthistestmethod,usestandardstatisticaltech-niquesinmakinganycomparisonsoftestresultsforeitherwithin-laboratoryorbetween-laboratoryaverages.10.2Bias.Thecolorfastnesstoacidsandalkaliscanbedefinedonlyintermsofatestmethod.Thereisnoindependentmethodfordeterminingthetruevalue.Asameansofestimatingthisproperty,themethodhasnoknownbias.11.Note11.1AvailablefromAATCC,P.O.Box12215,ResearchTriangleParkNC27709;tel:[phone];fax:[phone];e-mail:[e-mail]6-2006ColorfastnesstoAcidsandAlkalisCopyrightTheAmericanAssociationofTextileChemistsandColoristsProvidedbyIHSunderlicensewithAATCCLicensee=HongKongPolytechnicUniv/9976803100NotforResale,03/24/200704:07:53MDTNoreproductionornetworkingpermittedwithoutlicensefromIHS--`````,``````,,``,`,,,```,,``-`-`,,`,,`,`,,`---