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【英文标准名称】:StandardTestMethodforMeasuringtheMinimumOxygenConcentrationtoSupportCandle-LikeCombustionofPlastics(OxygenIndex)
【原文标准名称】:测定支持塑料的蜡烛式燃烧的最小氧浓度的标准试验方法
【标准号】:ASTMD2863-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:candle-likecombustion;minimumoxygenconcentration;oxygen;oxygenconcentration;oxygenindex;Oxygenmaterialcompatibility;Burningcharacteristics--plastics;Candle-likecombustion;Combustion--plastics;Flammability--plastics;Ignition--plasti
【摘要】:Thistestmethodprovidesforthemeasuringoftheminimumconcentrationofoxygeninaflowingmixtureofoxygenandnitrogenthatwilljustsupportflamingcombustionofplastics.Correlationwithburningcharacteristicsunderactualuseconditionsisnotimplied.Inthistestmethod,thespecimensaresubjectedtooneormorespecificsetsoflaboratorytestconditions.Ifdifferenttestconditionsaresubstitutedortheend-useconditionsarechanged,itisnotalwayspossiblebyorfromthistesttopredictchangesinthefire-test-responsecharacteristicsmeasured.Therefore,theresultsarevalidonlyforthefire-test-exposureconditionsdescribedinthistestmethod.1.1Thisfire-test-responsestandarddescribesaprocedureformeasuringtheminimumconcentrationofoxygen,expressedaspercentvolume,thatwilljustsupportflamingcombustioninaflowingmixtureofoxygenandnitrogen.1.2Thistestmethodprovidesthreetestingprocedures.ProcedureAinvolvestopsurfaceignition,ProcedureBinvolvespropagatingignition,andProcedureCisashortprocedureinvolvingthecomparisonwithaspecifiedminimumvalueoftheoxygenindex.1.3Testspecimensusedforthistestmethodarepreparedintooneofsixtypesofspecimens(seeTable1).1.4Thistestmethodprovidesfortestingmaterialsthatarestructurallyself-supportingintheformofverticalbarsorsheetupto10.5-mmthick.Suchmaterialsaresolid,laminatedorcellularmaterialscharacterizedbyanapparentdensitygreaterthan15kg/m3.1.5Thistestmethodalsoprovidesfortestingflexiblesheetorfilmmaterials,whilesupportedvertically.1.6Thistestmethodisalsosuitable,insomecases,forcellularmaterialshavinganapparentdensityoflessthan15kg/m3.Note18212;Althoughthistestmethodhasbeenfoundapplicablefortestingsomeothermaterials,theprecisionofthetestmethodhasnotbeendeterminedforthesematerials,orforspecimengeometriesandtestconditionsoutsidethoserecommendedherein.1.7Thistestmethodmeasuresanddescribestheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.8ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:14P.;A4
【正文语种】:英语