【astm標準】d 4206 - 96 (2013)

1、Designation:D4206?96(Reapproved2013)StardTestMethodfSustainedBurningofLiquidMixturesUsingtheSmallScaleOpenCupApparatus1ThisstardisissuedunderthefixeddesignationD4206thenumberimmediatelyfollowingthedesignationindicatesthe

2、yearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.INTRODUCTIONThistestmethodmaybeusedi

3、nconjunctionwithaflashpointdetermination.Iftheflashpointofamixtureofflammablenonflammableliquidsliquidsofwidelydifferentflashpointsisbelowtheupperlimitofaflammabilityclassification(fexample100FspecifiedbytheU.S.Departmen

4、tofTransptation)thistestmaybeconductedtodeterminethesustainedburningacteristicsofthemixture.ThistestmethodisamodificationofthetestfcombustibilitynowincpatedasSchedule2ofthe“HighlyFlammableLiquidsLiquifiedPetroleumGasesRe

5、gulation1972”oftheUnitedKingdomunderTheFactiesAct1961whichisalsoissuedasBritishStardBS3900PartA11SmallScaleTestfCombustibility.ThissustainedburningtestwasstudiedproposedbytheASTMCodinatingCommitteefFlashPointRelatedPrope

6、rties.ThemajpurposeofthistestissimilartothatoftheBritishtest—toprovideamethodfdeterminingthesustainedburningacteristicsbydirectlyobservingthispropertyratherthanbydeducingthemfromtheflashpoint.1.Scope1.1Thistestmethod2des

7、cribesaprocedurefdeterminingthesustainedburningacteristicsofmixturesofflammablenonflammableliquidstomixturescontainingliquidswithwidelydifferentflashpoints.1.2Thevaluesstatedininchpoundunitsaretoberegardedasstard.Thevalu

8、esgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedfinfmationonlyarenotconsideredstard.1.3Thisstardshouldbeusedtomeasuredescribetheresponseofmaterialsproductsassembliestoheatflameundercontrolledconditi

9、onsshouldnotbeusedtodescribeappraisethefirehazardfireriskofmaterialsproductsassembliesunderactualfireconditions.Howeverresultsofthetestmaybeusedaselementsofafirehazardassessmentafireriskassessmentwhichtakesintoaccountall

10、ofthefactswhicharepertinenttoanassessmentofthefirehazardfireriskofaparticularenduse.1.4Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishapp

11、ropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1BritishStards:3BS3900PartA11SmallScaleTestfCombustibility3.SummaryofTestMethod3.1Ablockofaluminumalloyothernonru

12、stingmetalofsuitableheatconductivitywithaconcavedepression(calledthewell)isheatedtotherequiredtemperatureof120F(49C).Astardsourceofflamecapableofbeingswungoverthecenterofthewellatagivendistancefromitisattachedtothemetalb

13、lock.3.2Twomillilitresoftheproductundertestaretransferredtothewell.Aftertheproducthasreachedthestatedtemperaturetheflameispassedoverthewellheldtherefaspecifiedtimethenremoved.Thetimeofsustainedburningisthennoted.1Thistes

14、tmethodisunderthejurisdictionofASTMCommitteeD01onPaintRelatedCoatingsMaterialsApplicationsisthedirectresponsibilityofSubcommitteeD01.21onChemicalAnalysisofPaintsPaintMaterials.CurrenteditionapprovedJune12013.PublishedJun

15、e2013.iginallyapprovedin1982.Lastpreviouseditionapprovedin2007asD4206–96(2007).DOI:10.1520D420696R13.2McKelvieA.N.“ATestfAbilitytoSupptCombustionfLiquidsIncludingPaintsAlliedProducts”JournalofOilCo.ChemicalAssoc.1972Vol5

16、5pp.1086–1095.3AvailablefromBritishStardsInstitute(BSI)389ChiswickHighRd.LondonW44ALU.K.:www.bsiAmericanNationalStardsInstitute(ANSI)25W.43rdSt.4thFloNewYkNY10036:www.ansi.g.Copyright?ASTMInternational100BarrHarbDrivePOB

17、oxC700WestConshohockenPA194282959.UnitedStates1(61C)ofthetemperature120F(49C)crectedifnecessaryfthedifferenceinpressurefrom760mmHg(101.3kPa).8.2Afterthecupiswithin62F(61C)ofthecrecttesttemperaturewithdrawfromthesamplecon

18、tainera2mLspecimenusingthegraduatedsyringepipet.Transferthespecimentothewellofthetesterimmediatelystartthetimingdevice.8.3Lightthetestflamewiththejetinthe“off”positionawayfromthewell.Adjustthesizeoftheflamesothatitissphe

19、ricalapproximately5?32in.(4mm)indiameterbymatchingittothe5?32in.diametercircleengravedonthesurfaceofthetester.8.4Afterexactly1min(0to1s)atwhichtimethetestptionwillbedeemedtohavereachedthetesttemperatureasindicatedbytheth

20、ermometerembeddedinthemetalblockswingthetestflameintoapositionexactlyoverthewell.Holditinthispositionfexactly15sthenreturnittothe“off”position.8.5Observetimethedurationoftheburningofthespecimenfollowingthereturnoftheflam

21、etothe“off”position.8.6Repeatthetestwithafreshspecimentodeterminethemeantimeofburning.9.InterpretationofResults9.1Aproductisconsideredtosustainburningifthespecimen(a)igniteswhentheflameisoverthewellburningissustainedfmet

22、han15safteritisremoved(b)flashesburnswhenthetestflameisinthe“off”positionpritoswingingitoverthewell.10.Rept10.1Reptthefollowinginfmation:10.1.1Identificationofthematerialundertest10.1.2Testtemperaturebarometricpressurein

23、millimetresofmercury(kilopals)10.1.3Ifthespecimenburnslessthan15stheactualtimeofburning10.1.4Statementofsustainedburningacteristics.11.Precision11.1Theprecisionofthistestmethodwillbedetermined.12.Keywds12.1smallscaleopen

24、cupapparatussustainedburningANNEX(MatyInfmation)A1.DIMENSIONSOFTESTERTABLEA1.1DimensionsofTester(a)MetalBlockDetailsDimensionsmmDiameterofblock61.5–62.5Heightofblock35.0–38.0Diameterofflange94.5–95.5Flangethickness3.0app

25、rox.Heightofwell“l(fā)ip”aboveflange0.6–1.0Diameterofwell“l(fā)ip”41.0approx.Sphericalradiusofwell33.0–33.5Depthofwell6.2–6.4Distancefromtopofblocktothermometerhole16.0–17.0Thermometerholediameter7.0approx.(b)TestGasJetDetailsDi

26、mensionsmmOutsidediameterofjet3.0–4.0Jetendtaperedto1.7–2.3Beofjet0.6–0.8Lengthofjet(fromcenterofaxistotip)36.00–36.25Distanceofaxisfromcenterofwall38.00–38.25Flamegageringdiameter4.00.1Heightofjetabovetopofwell“l(fā)ip”A2.2