阻燃标准fmvss302.docx
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阻燃标准fmvss302
阻燃标准fmvss302
FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSESEFFECTIVE—SEPTEMBER1,1972
36FR2296512/2/71(Issued12/2)
40FR14318-193/31/75(Issued3/17)
40FR42746-79/16/75(Issued9/10)
40FR56667-812/4/75(Issued11/28)
63FR28922-575/27/98(Issued5/13/98)A63FR50995-10049/24/98(Issued9/21/98)
S1.Scope.ThisstandardspecifiesburnS4.1.1Reserved.
resistancerequirementsformaterialsusedinthe
occupantcompartmentsofmotorvehicles.
S4.2AnyportionofasingleorcompositeS2.Purpose.Thepurposeofthisstandardmaterialwhichiswithin1/2inchoftheoccupantistoreducethedeathsandinjuriestomotorcompartmentairspaceshallmeetthevehicleoccupantscausedbyvehiclefires,requirementsofS4.3.especiallythoseoriginatingintheinteriorofthe
vehiclefromsourcessuchasmatchesor
cigarettes.
Effective:
5/27/99S3.Application.ThisstandardappliestoR–requirementsofS4.3.>S3A.Definitions.“Occupantcompartment
airspace”meansthespacewithintheoccupant
compartmentthatnormallycontainsrefreshableS4.2.1Anymaterialthatdoesnotadheretoair.othermaterial(s)ateverypointofcontactshall
meettherequirementsofS4.3whentestedS4.Requirements.separately.
S4.1TheportionsdescribedinS4.2ofthe
followingcomponentsofvehicleoccupantS4.2.2Anymaterialthatadherestoothercompartmentsshallmeettherequirementsofmaterial(s)ateverypointofcontactshallmeetS4.3:
Seatcushions,seatbacks,seatbelts,therequirementsofS4.3whentestedasaheadlining,convertibletops,armrests,alltrimcompositewiththeothermaterial(s).panelsincludingdoor,front,rear,andside
panels,compartmentshelves,headrestraints,
floorcoverings,sunvisors,curtains,shades,
wheelhousingcovers;enginecompartmentEffective:
5/27/99covers,mattresscovers,andanyotherinterior
materials,includingpaddingandR–
A–NewMaterialAddedR–Revised
302–1–1R–DISTRIBUTED:
Oct.1998
FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSES
IllustrativeExample
Effective:
5/27/99
IllustrativeExample
R–<
>
surface,atarateofmorethan4inchesperC–minute.However,therequirementconcerningwithmaterialBandistestedseparately.Partof
transmissionofaflamefrontshallnotapplytoamaterialBiswithin1/2inchoftheoccupant
surfacecreatedbythecuttingofatestspecimencompartmentairspace,andmaterialsBandC
forpurposesoftestingpursuanttoS5.adhereateverypointofcontact;thereforeBand
Caretestedasacomposite.Thecutisin
materialCasshown,tomakeaspecimen(b)Ifamaterialstopsburningbeforeithas1/2inchthick.>burnedfor60secondsfromthestartoftiming,
andhasnotburnedmorethan2inchesfromthe
S4.3(a)WhentestedinaccordancewithS5,pointwheretimingwasstarted,itshallbe
consideredtomeettheburn-raterequirementofmaterialdescribedinS4.1andS4.2shallnot
burn,nortransmitaflamefrontacrossitsS4.3(a).
A–NewMaterialAddedR–Revised
302–1–2C–DISTRIBUTED:
Sept.1998
FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSES
1/2-inchclearancespacearoundthetopoftheEffective:
5/27/99cabinet,ten3/4-inch-diameterholesinthebaseR–adhereateverypointofcontact;therefore,BandS5.1.2Priortotesting,eachspecimenisCaretestedasacomposite.Thecutisinmaterialconditionedfor24hoursatatemperatureofCasshown,tomakeaspecimen13mmthick.70Fandarelativehumidityof50percent,and
thetestisconductedunderthoseambientS4.3(a)WhentestedinaccordancewithS5,
conditions.materialdescribedinS4.1andS4.2shallnot
burn,nortransmitaflamefrontacrossits
surface,atarateofmorethan102mmperEffective:
5/27/99
minute.TherequirementconcerningR–observationwindowinthefront,aclosable
(b)Ifamaterialstopsburningbeforeithasopeningtopermitinsertionofthespecimenburnedfor60secondsfromthestartoftiming,holder,andaholetoaccommodatetubingforaandhasnotburnedmorethan51mmfromthegasburner.Forventilation,ithasa13mmpointwheretimingwasstarted,itshallbeclearancespacearoundthetopofthecabinet,consideredtomeettheburn-raterequirementoftenholesinthebaseofthecabinet,eachhole19S4.3(a).>mmindiameterandlegstoelevatethebottomof
thecabinetby10mm,alllocatedasshownin
Figure1.S5.Testprocedure.
S5.1.2Priortotesting,eachspecimenisS5.1Conditions.conditionedfor24hoursatatemperatureof
21:
C,andarelativehumidityof50percent,and
S5.1.1Thetestisconductedinametalthetestisconductedunderthoseambientcabinetforprotectingthetestspecimensfromconditions.>
drafts.Theinteriorofthecabinetis15inches
long,8inchesdeep,and14incheshigh.IthasaS5.1.3Thetestspecimenisinsertedglassobservation.windowinthefront,abetweentwomatchingU-shapedframesofclosableopeningtopermitinsertionofthemetalstock1-inchwideand3/8ofaninchspecimenholder,andaholetoaccommodatehigh.TheinteriordimensionsoftheU-shapedtubingforagasburner.forventilation,ithasaframesare2incheswideby13incheslong.A
A–NewMaterialAddedR–Revised
302–1–3R–DISTRIBUTED:
July1998
FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSES
FIGURE1
A–NewMaterialAddedR–Revised
302–1–4A–DISTRIBUTED:
July1998
FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSESEffective:
5/27/99
R–<
>
A–NewMaterialAddedR–Revised
302–1–5R–DISTRIBUTED:
Oct.1998
FEDERALSAFETYSTANDARDSMVSS302MOTORVEHICLESAFETYSTANDARDNO.302FLAMMABILITYOFINTERIORMATERIALS–PASSENGERCARS,MULTIPURPOSEPASSENGERVEHICLES,TRUCKSANDBUSESspecimenthatsoftensandbendsattheflamingincheslong,whereverpossible.Thethicknessofendsoastocauseerraticburningiskeptthespecimenisthatofthesingleorcompositehorizontalbysupportsconsistingofthin,materialusedinthevehicle,exceptthatiftheheat-resistantwires,spanningthewidthofthematerial’stoicknessexceeds1/2inco,toeU-shapedframeunderthespecimenat1-inchspecimen.iscutdowntothatthicknessintervals.Adevicethatmaybeusedformeasuredfromthesurfaceofthespecimensupportingthistypeofmaterialisanadditionalclosesttotheoccupantcompartmentairspace.U-shapedframe,widerthantheU-shapedframeWhereitisnotpossibletoobtainaflatspecimencontainingthespecimen,spannedby10-milbecauseofsurfacecurvature,thespecimeniswiresofheat-resistantcompositionat1-inchcuttonotmorethan1/2inchinthicknessatanyintervals,insertedoverthebottomU-shapedpoint.Themaximumavailablelengthorwidthofframe.aspecimenisusedwhereeitherdimensionis
lessthan14inchesor4inches,respectively,
unlesssurrogatetestingisrequiredunderS5.1.4Abunsenburnerwithatubeof
S4.1.1.3/8-inchinsidediameterisused.Thegas
adjustingvalveissettoprovideaflame,withthe
Effective:
5/27/99tubevertical,of11/2inchesinheight.Theair
inlettotheburnerisclosed.R–testedshallbearectangle102mmwideby356
mmlong,whereverpossible.ThethicknessoftheEffective:
5/27/99
specimenisthatofthesingleorcompositeR–