FlammabilityMaterialsmaybeclassifiedbasedonburningtestsconductedinaccordancewithANSI/UL94,"TestsforFlammabilityofPlasticMaterialsforPartsinDevicesandAppliances,"ANSI/UL1694,"TestsforFlammabilityof***allPolymericComponentMaterials,"andANSI/UL723,"TestforSurfaceBurningCharacteristicsofBuildingMaterials."ANSI/UL94***all-scaletestdatadoesnotpertaintobuildingmaterials,furnishingsandrelatedcontents,andisintendedsolelyfordeterminingtheflammabilityofplasticmaterialsusedinthecomponentsandpartsofend-use-productdevicesandappliances,wheretheacceptabilityofthecombinationisdeterminedbyUL.TESTNAME(perANSI/UL94)HorizontalBurningTest20mmVerticalBurningTestThinMaterialVerticalBurningTestHorizontalBurningFoamedMaterialTest500Watt(125mm)VerticalTestFlameRatingHierarchy—V-0VTM-0—MoreSevere5VA—V-1VTM-1HF-1↑↑↑—V-2VTM-2HF-25VBHB——HBFLessSevereThermalEnduranceThematerialscoveredbythisprogramh***ebeeninvestigatedwithrespecttothermalenduranceofcertaincriticalproperties.Theinvestigationwasperformedaspartofalong-termthermal-agingprogramorbasedonhistoricalrecordinaccordancewithANSI/UL746B,"PolymericMaterials-LongTermPropertyEvaluati***."Thetemperaturebelowwhichaclassofcriticalpropertywillnotbeunacceptablycompromisedthroughchemicalthermaldegradation,overthereasonablelifeofanelectricalproduct(relativetoareferencematerialh***ingaconfirmed,acceptablecorrespondingperformance)isdefinedastheRelativeThermalIndex(RTI).MorethanoneRTImaybeappropriateforagivenmaterialdependingonthepropertyrequirementsforagivenapplication.Incertaincases,highertemperaturesarepermittedifsospecifiedbytheend-use-productstandard.RTIElec—ElectricalRTI,associatedwithcriticalinsulatingproperties.RTIMechImp—MechanicalImpactRTI,associatedwithcriticalimpactresistance,toughness,elongationandflexibilityproperties.RTIMechStr—MechanicalStrength(MechanicalwithoutImpact)RTI,associatedwithcriticalmechanicalstrengthandstructuralintegritywhereimpactresistance,resilienceandflexibilitymaynotbeessential.ResistancetoIgnitionandTrackingPropertiesPerformancemaybeinvestigatedwithrespecttoelectricaltrackresistance,abilitytoresistignitionfromelectricalsources,andotherelectricalproperties.Inorderto***oidanexcessivelevelofimpliedprecisionandbias,materialperformancesforseveraltestsarerecordedasPerformanceLevelCategories(PLC),basedonthemeantestresults(ratherthanrecordingtheexactnumericalresults),asindicatedinthetablefollowingthetestdescription.Hot-wireIgnition(HWI;ASTMD3874,IEC60695-2-20)—Performanceisexpressedasthemeannumberofsecondsneededtoignitestandardspecimens(ifthematerialignited).AnHWIPLC0maybeduetoallthetestspecimensmeltingawaywithoutanyignition.HWIRangeMeanIgnitionTime(insec)AssignedPLC120andlonger060through119130through59215through2937through144Lessthan75High-current-arcIgnition(HAI;ANSI/UL746A)—Performanceisexpressedasthenumberofarc-ruptureexposures(standardizedastoelectrodetypeandshapeandelectriccircuit)thatarenecessarytoigniteamaterialwhentheyareappliedatastandardrateonthesurfaceofthematerial.HAIRangeMeanNumberofArcstoCauseIgnitionAssignedPLC120andgreater060through119130through59215through293Lessthan154High-voltage-arcTrackingRate(HVTR;ANSI/UL746A)—Denotedastherate,inmm/min,thatatrackingpathcanbeproducedonthesurfaceofthematerialunderstandardizedtestconditi***.Anotationismadeifignitiononthematerialtakesplace.Theresultsoftestingthenominal3mmthicknessarec***ideredrepresentativeofthematerial'sperformanceinanythickness.代理范围:(一)水平燃烧测试,94HB,并指导前期打样送测;(二)垂直燃烧测试,94V-2,94V-1,94V-0,并指导前期打样送测;详询Sunny陶13913142465***1822971259)