【英文标准名称】:StandardPracticesforEvaluatingtheAgeResistanceofPolymericMaterialsUsedinOxygenService
【原文标准名称】:供氧设备用评估聚合物材料耐老化性的标准实施规程
【标准号】:ASTMG114-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:G04.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:老化;防火安全;易燃性;材料;氧
【英文主题词】:aging;acceleratedaging;combustion;enrichedair;flammability;ignition;lifetimeprediction;naturalaging;oxidativedegradation;oxygen;oxygencompatibility
【摘要】:1.1Thesepracticesdescribeseveralproceduresthatareusedtodeterminetheageresistanceofplastic,thermosetting,andelastomericmaterialsexposedtooxygen-containingmedia.1.2Whilethispracticefocusesonevaluatingtheageresistanceofpolymericmaterialsinoxygen-containingmediapriortoignitionandcombustiontesting,italsohasrelevanceforevaluatingtheageresistanceofmetals.1.3Thesepracticesaddressbothestablishedproceduresthathaveafoundationofexperienceandnewproceduresthathaveyettobevalidated.Thelatterareincludedtopromoteresearchandlaterelaborationinthispracticeasmethodsoftheformertype.1.4Theresultsofthesepracticesmaynotgiveexactcorrelationwithserviceperformancesinceserviceconditionsvarywidelyandmayinvolvemultiplefactors.1.5Threeproceduresaredescribedforevaluatingtheageresistanceofpolymericmaterialsdependingonapplicationandinformationsought.1.5.1ProcedureA:NaturalAgingThisprocedureisusedtosimulatetheeffect(s)ofoneormoreservicestressorsonamaterialsoxygenresistance,andissuitableforevaluatingmaterialsthatexperiencecontinuousorintermittentexposuretoelevatedtemperatureduringservice.1.5.2ProcedureB:AcceleratedAgingComparativeOxygenResistanceThisprocedureissuitableforevaluatingmaterialsthatareusedinambienttemperatureservice,oratatemperaturethatisotherwiselowerthantheagingtemperature,andisusefulfordevelopingoxygencompatibilityrankingsonalaboratorycomparisonbasis.1.5.3ProcedureC:AcceleratedAgingLifetimePredictionThisprocedureisusedtodeterminetherelationshipbetweenagingtemperatureandafixedlevelofpropertychange,therebyallowingpredictionstobemadeabouttheeffectofprolongedserviceonoxidativedegradation.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard,however,allnumericalvaluesmustalsobecitedinthesystemsinwhichtheywereactuallymeasured.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection10.
【中国标准分类号】:C80
【国际标准分类号】:13_220_40;71_100_20
【页数】:11P.;A4
【正文语种】: