【英文标准名称】:StandardTestMethodforColorStabilityofBuildingConstructionSealantsasDeterminedbyLaboratoryAcceleratedWeatheringProcedures
【原文标准名称】:用实验室加速风化程序测定建筑物密封材料颜色稳定性的标准试验方法
【标准号】:ASTMC1501-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:C24.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;建筑材料;密封层(剂);色牢度
【英文主题词】:artificialacceleratedweathering;sealant;colorchange;colorstability
【摘要】:Thistestmethodisintendedtoinducecolorchangesinsealants,aswellastheirconstituentpigments,associatedwithend-useconditions,includingtheeffectsofsunlight,moisture,andheat.Theexposuresusedinthistestmethodarenotintendedtosimulatethecolorchangeofasealantcausedbylocalizedweatheringphenomena,suchasatmosphericpollution,biologicalattack,andsaltwaterexposure.Whenconductingexposuresindevicesthatuselaboratorylightsources,itisimportanttoconsiderhowwelltheartificialtestconditionswillreproducepropertychangesandfailuremodesassociatedwithend-useenvironmentsforthesealantbeingtested.InformationontheuseandinterpretationofdatafromacceleratedexposuretestsisprovidedinASTMG151.Whenthistestmethodisusedaspartofaspecification,exactprocedure,testconditions,testdurationandevaluationtechniquemustbespecified.Resultsobtainedbetweenthetwoproceduresmayvary,becausethespectralpowerdistributionofthelightsources(fluorescentUVandxenonarc)differ.Sealantsshouldnotbecomparedtoeachotherbasedontheresultsobtainedindifferenttypesofapparatus.Thesedevicesarecapableofmatchingultravioletsolarradiationreasonablywell.However,forsealantssensitivetolongwavelengthUVandvisiblesolarradiation,theabsenceofthisradiationinthefluorescentUVapparatuscandistortcolorstabilityrankingwhencomparedtoexteriorenvironmentexposure.Note18212;RefertoPracticesG151forfullcautionaryguidanceregardinglaboratoryweatheringofnon-metallicmaterials.1.1Thistestmethoddescribeslaboratoryacceleratedweatheringproceduresusingeitherfluorescentultravioletorxenonarctestdevicesfordeterminingthecolorstabilityofbuildingconstructionsealants.1.2Colorstabilityrankingsprovidedbythesetwoproceduresmaynotagree.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Valuesgiveninparenthesesareforinformationonly.1.4ThereisnoequivalentISOstandardforthistestmethod.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q24
【国际标准分类号】:91_120_30
【页数】:4P.;A4
【正文语种】: