ASTM D 5025-05 塑料小刻度燃烧试验的试验室燃炉规范

塑料小刻度燃烧试验的试验室燃炉规范

Designation:D5025–05

StandardSpeci cationfor

LaboratoryBurnerUsedforSmall-ScaleBurningTestsonPlasticMaterials1

Thisstandardisissuedunderthe xeddesignationD5025;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.

1.Scope*

1.1Thisspeci cationcoversthephysicaldimensionsandcharacteristicsofalaboratoryburnertobeusedasanignitionsourceforsmall-scaleburningtestsonplasticmaterials.Theburnerisusedwithmethane,propane,orbutanesupplygasesfor ameheightsof20to125mm.

NOTE1—Theburnerdescribedinthisspeci cationissuitableforuseinthefollowingASTMstandards:Speci cationC509,TestMethodD229,TestMethodD635,TestMethodD876,TestMethodD3014,TestMethodD3801,TestMethodD4804,TestMethodD4986,andTestMethodD5048.Safetyhazardsandknownlimitationsonapplicabilityof re-test-responsestandardsareaddressedintheinpidualtestmethods.NOTE2—Thisspeci cationisequivalenttotheignitionsourcespeci- edinIEC60695-11-3,AnnexAandIEC60695-11-4,AnnexA.

NOTE3—Thisspeci cationisequivalenttotheP/PF2ignitionsourcespeci edinISO10093.

Thisspeci cationisunderthejurisdictionofASTMCommitteeD20onPlasticsandisthedirectresponsibilityofSubcommitteeD20.30onThermalProperties.

CurrenteditionapprovedApril1,http://doc.guandang.netstpreviouseditionapprovedin1999asD5025-99.2

ForreferencedASTMstandards,visittheASTMwebsite,http://doc.guandang.net,orcontactASTMCustomerServiceatservice@http://doc.guandang.net.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.

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2.ReferencedDocuments2.1ASTMStandards:2

C509Speci cationforElastomericCellularPreformedGasketandSealingMaterial

D229TestMethodsforRigidSheetandPlateMaterialsUsedforElectricalInsulation

D635TestMethodforRateofBurningand/orExtentandTimeofBurningofSelf-SupportingPlasticsinaHorizon-talPosition

D876TestMethodsforNonrigidVinylChloridePolymerTubingUsedforElectricalInsulationD883TerminologyRelatingtoPlastics

D1600TerminologyofAbbreviatedTermsRelatingtoPlastics

D3014TestMethodforFlameHeight,TimeofBurning,andLossofMassofRigidThermosetCellularPlasticsinaVerticalPosition

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D3801TestMethodforMeasuringtheComparativeExtin-guishingCharacteristicsofSolidPlasticsinaVerticalPosition

D4804TestMethodsforDeterminingtheFlammabilityCharacteristicsofNonrigidSolidPlastics

D4986TestMethodforHorizontalBurningCharacteristicsofCellularPolymericMaterials

D5048TestMethodforMeasuringtheComparativeBurn-ingCharacteristicsandResistancetoBurn-ThroughofSolidPlasticsUsinga125-mmFlame

D5207PracticeforCalibrationof20and125-mmTestFlamesforSmall-ScaleBurningTestsonPlasticMaterialsE176TerminologyofFireStandards2.2ISOStandards:3

ISO10093Plastics—FireTests—StandardIgnitionSources2.3IECStandards:3

IECTS60695-11-3FireHazardTesting—Part11-3:TestFlames—50WFlames—ApparatusandCon rmationalTestMethods

IECTS60695-11-4FireHazardTesting—Part11-4:TestFlames—500WFlames—ApparatusandCon rmationalTestMethods

*ASummaryofChangessectionappearsattheendofthisstandard.

Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.

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3.Terminology

3.1De nitions—Fortermsrelatingtoplastics,thede ni-tionsareinaccordancewithTerminologyD883,andtheabbreviationsareinaccordancewithTerminologyD1600.Fortermsrelatingto re,thede nitionsareinaccordancewithTerminologyE176.

4.Design

4.1Theburnershallconsistofabarrelthatthreadsontoaone-piecebaseandgasinlet,asshowninFig.1.Thecomponentsshallbeconstructedofmetal.

4.1.1BurnerBarrel—Theburnerbarrelshallconsistofamixingtubeandthreadedair-inletadapter.Themixingtubeshallbeofseamlessconstruction,withaninsidediameterof9.560.3mm.Thelengthofthebarrelfromthetopoftheair-inletopeningstothetopofthemixingtubeshallbe

AvailablefromAmericanNationalStandardsInstitute(ANSI),25W.43rdSt.,4thFloor,NewYork,NY10036.

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塑料小刻度燃烧试验的试验室燃炉规范

NOTE4—Therequirementfortheminimumareaoftheair-inletopeningshascommonlybeenobtainedwiththreeopenings,approxi-mately6.5by12.5mm.

4.1.2BurnerOri ce—Thebaseoftheburnershallbeequippedwithanori ceof0.9060.03mmindiameterand1.6060.05mminlength.

4.1.3NeedleValve—Thebaseoftheburnershallbeequippedwithamachinedneedlevalvetorestricttheori ceopeningandregulategasvelocitythroughtheburner.Aknurledknobshallbeprovidedforadjustmentofthevalve.Theneedlevalveshallbemachinedwithaconicalpointusinganangleof40°withamaximum attopof0.4mm.

NOTE5—Theneedlemustalignwiththeori ceinthevalveseat.Check

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100610mm.Thetopofthemixingtubeshallnotbeequippedwithendattachments,suchasstabilizers.Theair-inletadapter,locatedatthebottomofthemixingtube,shallbeapproximately25mmhighand20mminoveralldiameter.Theminimumareaoftheair-inletopeningsshallbe225mm2distributedequidistantaroundtheadapter.Withthebarrelfullyscrewedintothebaseandthelocknutinplace,theair-inletopeningsshallbecompletelyclosed.

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FIG.1Burner

Design

thealignmentbyremovingthebarrelandignitingthefuelgasdirectlyattheori ce.The ameshallremainvertical.Ifthe ameslants,possiblereasonsinclude,butarenotlimitedto:theori ceisoff-center,ortheneedleisworn.Periodicallycheckthealignmentandreplacetheneedleasnecessary.

4.1.4GasInlet—Thebaseoftheburnershallbeprovidedwithaserrated ttingforconnectiontothegassupply.

4.1.5LockNut(Optional)—Providetheburnerwithalocknutthatthreadsontothebase.Thisallowsthebarreltobetightenedsecurelyagainstthelocknutwhentest amesrequirepositioningofthebarrelwithair-inletopeningspartiallyorfullyopen.5.Workmanship

5.1Themixingtubeofthebarrelshallhaveaunifor …… 此处隐藏：6014字，全部文档内容请下载后查看。喜欢就下载吧 ……