ASTM C1257-2006a 溶剂释放型密封剂加速老化的标准试验方法

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【英文标准名称】:StandardTestMethodforAcceleratedWeatheringofSolvent-Release-TypeSealants
【原文标准名称】:溶剂释放型密封剂加速老化的标准试验方法
【标准号】:ASTMC1257-2006a
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:粘附;建筑材料;建筑物;辐射;密封层(剂);密封件;溶剂;试验;风化
【英文主题词】:acceleratedweathering;sealant;solvent-releasesealant
【摘要】:Itisdifficulttoestablishaprecisecorrelationbetweenlaboratoryacceleratedandnaturalweatheringbecauseof(1)geographicalclimaticvariations,localweathervariationfromnormal,andlocalpollutantsand(2)thefactthattheaccelerationfactorismaterialdependent,varyingwiththetypeofmaterialaswellasitsformulation.Thistestmethodisusedtodeterminetheresistanceofasealanttolaboratoryacceleratedweatheringand,ifacontrolmaterialwithknownoutdoorweatheringperformanceisused,therelativeweatheringperformanceofthesealantagainstthatofthecontrolmaterial.Thistestmethodisconductedusingaluminumchannels.Othersubstratematerialsmayshowdifferentresults.1.1Thistestmethodincludestwolaboratoryacceleratedexposureproceduresforpredictingtheeffectsofultravioletorultraviolet/visibleradiation,heat,andmoistureoncolor,chalking,cracking,andadhesionofsolvent-releasesealants.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3Thecommitteewithjurisdictionoverthisstandardisnotawareofanycomparablestandardspublishedbyotherorganizations.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50
【页数】:4P.;A4
【正文语种】: