Designation:D1518−14StandardTestMethodforThermalResistanceofBattingSystemsUsingaHotPlate1ThisstandardisissuedunderthefixeddesignationD1518;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThisstandardreplacesD1518-85,ThermalTransmittanceofTextileMaterials.Thisstandardprovidesamethodformeasuringthethermalresistance(insulation)providedbybattingsandbatting/fabricsystemsunderstillairconditionsoranairflowcondition.OtherhotplatestandardsF1868andISO11092provideamethodformeasuringthethermalresistanceandevaporativeresistanceoffabricsandfabricsystems.ThemethodformeasuringfabricinsulationinthesestandardsiscomparabletoOption2:AirVelocityConditioninD1518.Thesestandardscanbeusedtocomparethethermalpropertiesoftextilematerials.ManikinstandardsF1291andF2370canbeusedtomeasureandcomparethethermalresistanceandevaporativeresistanceofclothingsystems,respectively.ManikinstandardF1720canbeusedtomeasuretheinsulationprovidedbysleepingbagsystems.1.Scope1.1Thistestmethodcoversthemeasurementofthethermalresistance,understeady-stateconditions,ofbattingsandbatting/fabricsystems,andothermaterialswithinthelimitsspecifiedin1.2.Itmeasurestheheattransferfromawarm,dry,constant-temperature,horizontalflat-plateupthroughalayerofthetestmaterialtoacoolatmosphereandcalculatestheresistanceofthematerial.Themeasurementsaremadeunderstillairconditions(Option#1)orwithahorizontalairflowoverthespecimen(Option#2).1.2Forpracticalpurposes,thistestmethodislimitedtodeterminationsonspecimensofbattingsandlayeredbatting/fabricassemblieshavinganintrinsicthermalresistancefrom0.1to1.5K·m2/Wandthicknessesnotinexcessof50mm.1.3Thistestmethodalsoprovidesamethodfordeterminingthebulkdensityofthematerial,theinsulationperunitthickness,andtheinsulationperunitweight.1.4ThevaluesstatedinSIunitsaretoberegardedasstandar...
