ASTM D635-2010 塑料在水平位置条件下的燃烧速度和/或燃烧范围和时间的标准试验方法

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【英文标准名称】:StandardTestMethodforRateofBurningand/orExtentandTimeofBurningofPlasticsinaHorizontalPosition
【原文标准名称】:塑料在水平位置条件下的燃烧速度和/或燃烧范围和时间的标准试验方法
【标准号】:ASTMD635-2010
【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】:burningcharacteristics;combustion;extentofburning;flammability;HB;horizontalburningrate;plastics;rateofburning;small-scaleburningtestburning;timeofburning;Burningcharacteristics--plastics;Extentofburning;Horizontalburn
【摘要】:Testsmadeonamaterialunderconditionshereinprescribedareofvalueincomparingtherateofburningorextentandtimeofburningcharacteristics,orboth,ofdifferentmaterials,incontrollingmanufacturingprocesses,orasameasureofdeteriorationorchangeintheseburningcharacteristicspriortoorduringuse.Correlationwithflammabilityunderactualuseconditionsisnotimplied.Therateofburningandotherburningphenomenawillbeaffectedbysuchfactorsasdensity,pigments,anyanisotropyofthematerialandthethicknessofthespecimen.Testdatashallbecomparedonlyforspecimensofsimilarthickness,whethercomparisonsarebeingmadewiththesameordifferentmaterials.Therateofburningandotherburningphenomenawillvarywiththickness.Itisfeasiblethatsheetmaterialsthathavebeenstretchedduringprocessingwillrelaxduringburningandgiveerraticresultsunlesstheyarefirstheatedabovetheirdeflectiontemperature,inaccordancewithTestMethodD648,foratimesufficienttopermitcompleterelaxation.Burningtestsrequirethatcertainvariablesbearbitrarilyfixed,forexample,specimensize,energysourceandapplicationtime,andendpoints.Materialswillbefoundthatareunusuallysensitivetooneormoreoftheconditionschosenforthismethodleadingtohighlyvariableresults.Additionalburningcharacterizationbyothermethodsishighlydesirableinsuchcases(seeNote2).Inthisprocedure,thespecimensaresubjectedtospecificlaboratorytestconditions.Ifdifferenttestconditionsaresubstitutedortheend-useconditionsarechanged,itwillnotalwaysbepossiblebyorfromthistesttopredictchangesinthefire-test-responsecharacteristicsmeasured.Therefore,theresultsarevalidonlyforthefire-test-exposureconditionsdescribedinthisprocedure.1.1Thisfire-test-responsetestmethodcoversasmall-scalelaboratoryscreeningprocedureforcomparingtherelativelinearrateofburningorextentandtimeofburning,orboth,ofplasticsintheformofbars,moldedorcutfromsheets,plates,orpanels,andtestedinthehorizontalposition.Note18212;Thistestmethod,andtestmethodAofIEC60695-11-10aretechnicallyequivalent.Note28212;Foradditionalinformationonmaterialswhichdonotburntothefirstreferencemarkbythistest,seeTestMethodD3801.1.2Thistestmethodwasdevelopedforpolymericmaterialsusedforpartsindevicesandappliances.Theresultsareintendedtoserveasapreliminaryindicationoftheiracceptabilitywithrespecttoflammabilityforaparticularapplication.Thefinalacceptanceofthematerialisdependentuponitsuseincompleteequipmentthatconformswiththestandardapplicabletosuchequipment.1.3TheclassificationsystemdescribedinAppendixX1isintendedforqualityassuranceandthepreselectionofcomponentmaterialsforproducts.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardsorfireriskassessmentofmaterials,products,orassembliesunderactualfireconditions.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itist......
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:7P.;A4
【正文语种】:英语