宁波优尔检测技术有限公司

Flammability


MaterialsmaybeclassifiedbasedonburningtestsconductedinaccordancewithANSI/UL94，"TestsforFlammabilityofPlasticMaterialsforPartsinDevicesandAppliances，"ANSI/UL1694，"TestsforFlammabilityofSmallPolymericComponentMaterials，"andANSI/UL723，"TestforSurfaceBurningCharacteristicsofBuildingMaterials."
ANSI/UL94small-scaletestdatadoesnotpertaintobuildingmaterials，furnishingsandrelatedcontents，andisintendedsolelyfordeterminingtheflammabilityofplasticmaterialsusedinthecomponentsandpartsofend-use-productdevicesandappliances，wheretheacceptabilityofthecombinationisdeterminedbyUL.
TESTNAME(perANSI/UL94)


HorizontalBurningTest 
20mmVerticalBurningTestThinMaterialVerticalBurningTestHorizontalBurningFoamedMaterialTest  
500Watt(125mm)VerticalTest
FlameRatingHierarchy—V-0VTM-0—MoreSevere5VA
—V-1VTM-1HF-1↑
↑
↑
—V-2VTM-2HF-25VB
HB——HBFLessSevere
ThermalEndurance


Thematerialscoveredbythisprogramhavebeeninvestigatedwithrespecttothermalenduranceofcertaincriticalproperties.Theinvestigationwasperformedaspartofalong-termthermal-agingprogramorbasedonhistoricalrecordinaccordancewithANSI/UL746B，"PolymericMaterials-LongTermPropertyEvaluations."Thetemperaturebelowwhichaclassofcriticalpropertywillnotbeunacceptablycompromisedthroughchemicalthermaldegradation，overthereasonablelifeofanelectricalproduct(relativetoareferencematerialhavingaconfirmed，acceptablecorrespondingperformance)isdefinedastheRelativeThermalIndex(RTI).MorethanoneRTImaybeappropriateforagivenmaterialdependingonthepropertyrequirementsforagivenapplication.Incertaincases，highertemperaturesarepermittedifsospecifiedbytheend-use-productstandard.
RTIElec—ElectricalRTI，associatedwithcriticalinsulatingproperties.
RTIMechImp—MechanicalImpactRTI，associatedwithcriticalimpactresistance，toughness，elongationandflexibilityproperties.
RTIMechStr—MechanicalStrength(MechanicalwithoutImpact)RTI，associatedwithcriticalmechanicalstrengthandstructuralintegritywhereimpactresistance，resilienceandflexibilitymaynotbeessential.
ResistancetoIgnitionandTrackingProperties


Performancemaybeinvestigatedwithrespecttoelectricaltrackresistance，abilitytoresistignitionfromelectricalsources，andotherelectricalproperties.Inordertoavoidanexcessivelevelofimpliedprecisionandbias，materialperformancesforseveraltestsarerecordedasPerformanceLevelCategories(PLC)，basedonthemeantestresults(ratherthanrecordingtheexactnumericalresults)，asindicatedinthetablefollowingthetestdescription.
Hot-wireIgnition(HWIASTMD3874，IEC60695-2-20)—Performanceisexpressedasthemeannumberofsecondsneededtoignitestandardspecimens(ifthematerialignited).AnHWIPLC0maybeduetoallthetestspecimensmeltingawaywithoutanyignition.
HWIRange 
MeanIgnitionTime(insec)Assigned 
PLC
120andlonger0
60through1191
30through592
15through293
7through144
Lessthan75
High-current-arcIgnition(HAIANSI/UL746A)—Performanceisexpressedasthenumberofarc-ruptureexposures(standardizedastoelectrodetypeandshapeandelectriccircuit)thatarenecessarytoigniteamaterialwhentheyareappliedatastandardrateonthesurfaceofthematerial.
HAIRange 
MeanNumberofArcs 
toCauseIgnitionAssigned 
PLC
120andgreater0
60through1191
30through592
15through293
Lessthan154
High-voltage-arcTrackingRate(HVTRANSI/UL746A)—Denotedastherate，inmm/min，thatatrackingpathcanbeproducedonthesurfaceofthematerialunderstandardizedtestconditions.Anotationismadeifignitiononthematerialtakesplace.Theresultsoftestingthenominal3mmthicknessareconsideredrepresentativeofthematerial‘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


电子线UL758认证，灯具UL认证，电线电缆UL认证，QMMY2UL746D注塑件认证，UL969PGDQ2标签认证，连接器UL认证，灯饰CCC认证，线路板组装VZQC2认证，UL969PGAA标签认证，UL588圣诞产品认证，软线UL62认证代理，PCBA线路板组装ZPVI2认证，电容UL认证，开关UL认证，网络线UL444认证，锂电池、镍锰电池UL认证，水晶头UL1863认证，导电泡棉UL认证，光伏电缆UL认证，UL817插头认证，ECBT2UL1997连接器认证，热缩套管UL认证，功率线UL13认证，UL507直流交流风扇认证，UL最新RSCS环保认证，阻燃套管UL认证，火灾报警线UL1424认证，UL2089车载充电器认证，UL1059端子台认证，塑胶电镀处理UL认证，光纤UL1651认证，UL355卷线器认证，UL486接线端子认证，UL486接线端子认证塑胶料QMFZ2认证，UL764线束认证，UL310快接端子认证，UL1446绝缘系统认证，开关VDE认证，各国电线电缆认证，各国插头认证
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