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1、Designation:D1518?14StardTestMethodfThermalResistanceofBattingSystemsUsingaHotPlate1ThisstardisissuedunderthefixeddesignationD1518thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevi

2、siontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.INTRODUCTIONThisstardreplacesD151885ThermalTransmittanceofTextileMateri

3、als.Thisstardprovidesamethodfmeasuringthethermalresistance(insulation)providedbybattingsbattingfabricsystemsunderstillairconditionsanairflowcondition.OtherhotplatestardsF1868ISO11092provideamethodfmeasuringthethermalresi

4、stanceevapativeresistanceoffabricsfabricsystems.ThemethodfmeasuringfabricinsulationinthesestardsiscomparabletoOption2:AirVelocityConditioninD1518.Thesestardscanbeusedtocomparethethermalpropertiesoftextilematerials.Maniki

5、nstardsF1291F2370canbeusedtomeasurecomparethethermalresistanceevapativeresistanceofclothingsystemsrespectively.ManikinstardF1720canbeusedtomeasuretheinsulationprovidedbysleepingbagsystems.1.Scope1.1Thistestmethodcoversth

6、emeasurementofthethermalresistanceundersteadystateconditionsofbattingsbattingfabricsystemsothermaterialswithinthelimitsspecifiedin1.2.Itmeasurestheheattransferfromawarmdryconstanttemperaturehizontalflatplateupthroughalay

7、erofthetestmaterialtoacoolatmospherecalculatestheresistanceofthematerial.Themeasurementsaremadeunderstillairconditions(Option#1)withahizontalairflowoverthespecimen(Option#2).1.2Fpracticalpurposesthistestmethodislimitedto

8、determinationsonspecimensofbattingslayeredbattingfabricassemblieshavinganintrinsicthermalresistancefrom0.1to1.5Km2Wthicknessesnotinexcessof50mm.1.3Thistestmethodalsoprovidesamethodfdeterminingthebulkdensityofthematerialt

9、heinsulationperunitthicknesstheinsulationperunitweight.1.4ThevaluesstatedinSIunitsaretoberegardedasstard.1.5Thisstarddoesnotpurpttoaddressthesafetyconcernsassociatedwithitsuse.Itistheresponsibilityofwhoeverusesthisstardt

10、oconsultestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:2D123TerminologyRelatingtoTextilesD3776TestMethodsfMassPerUnitArea(Weight)ofFabri

11、cE177PracticefUseoftheTermsPrecisionBiasinASTMTestMethodsE691PracticefConductinganInterlabatyStudytoDeterminethePrecisionofaTestMethodF1291TestMethodfMeasuringtheThermalInsulationofClothingUsingaHeatedManikinF1494Termino

12、logyRelatingtoProtectiveClothingF1720TestMethodfMeasuringThermalInsulationofSleepingBagsUsingaHeatedManikinF1868TestMethodfThermalEvapativeResistanceofClothingMaterialsUsingaSweatingHotPlateF2370TestMethodfMeasuringtheEv

13、apativeResistanceofClothingUsingaSweatingManikin2.2ISOStards:3ISO11092Textiles–PhysiologicalEffects–MeasurementofThermalWaterVapourResistanceUnderSteadyStateConditions(SweatingGuardedHotplateTest)1Thistestmethodisunderth

14、ejurisdictionofASTMCommitteeD13onTextilesisthedirectresponsibilityofSubcommitteeD13.51onConditioningChemicalThermalProperties.CurrenteditionapprovedJuly12014.PublishedAugust2014.iginallypublishedasD1518–57T.Lastpreviouse

15、ditionapprovedin2011asD1518–11a.DOI:10.1520D151814.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsit

16、e.3AvailablefromAmericanNationalStardsInstitute(ANSI)25W.43rdSt.4thFloNewYkNY10036:www.ansi.g.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates16.5ControlledAtmosphereChamber—Th

17、ehotplateshallbehousedinanenvironmentalchamberthatcanbemaintainedatedtemperaturesbetween120Clower(see8.1.2.1.)Thetestchamberwalltemperatureshallbe60.5Coftheairinthechamber.Therelativehuityshallbemaintainedbetween2080%.6.

18、6Hood—Thehotplateshallbecoveredwithahoodtocontrolairflow.6.6.1Option1:StillAirCondition—AboxshapedhoodmadeoffabriconaframewiththedimensionsshowninFig.1isneededtocovertheplatesoastomaintainstillairconditionsoverthespecime

19、n.Thefabriccovermustbebreathablesothatheatbuildupisminimizedinsidethehood.Thinelasticknitshavebeensuccessfullyusedtoreduceairvelocityinthisapplication.6.6.2Option2:AirVelocityCondition—Anairflowhoodisneededthatprovides1.

20、0msofairvelocityoverthebattingfabricspecimeninthehizontaldirection.Theheightoftheairspaceabovethebareplatespecimenshouldstaythesamefromtesttotest.Therefethepositionofthehoodneedstobeadjustablerelativetotheplatesurfacethe

21、platesurfaceneedstobeadjustablerelativetothefixedpositionofthehoodtoaccommodatevaryingsamplethicknessestopreventairfromflowingintotheedgeofthesample.6.7MeasuringEnvironmentalParameters—Theairtemperaturerelativehuityairve

22、locityshallbemeasuredasfollows:6.7.1RelativeHuityMeasuringEquipment—Eitherawetdrybulbpsychrometeradewpointhygrometerotherelectronichuitymeasuringdeviceshallbeusedtomeasuretherelativehuityinsidethechamber.Therelativehuity

23、sensingdevicesshallhaveanoverallaccuracyofatleast64%.6.7.2AirTemperatureSenss—Airtemperaturesensswithanoverallaccuracyof60.1Cshallbeused.Thesenssshallhaveatimeconstantnotexceeding1min.Placementofsenssisdescribedundertest

24、conditionsfeachoption.6.7.3AirVelocityIndicat—FOption#2airvelocityshallbemeasuredwithanaccuracyof60.1msusingahotwireanemometer.Airvelocityismeasuredatapoint15mm(nominal)fromtheplatesurfacefromthetopofthetestspecimensurfa

25、cetothebottomoftheanemometersensingelement.Theairvelocityshallbemeasuredatthreepositionslocatedalongahizontallineperpendiculartotheairflowincludingapointatthecenteroftheplateatpointsatthecentersoftheguardsectiononbothsid

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