VDA-275-中英文完整版本

DeterminationDeterminationofFormaldehydefromVehicleInteriorwithModifiedFlaskMethodVDAMouldedcompositesandfleecesforvehiclesDeterminationofformaldehydereleaseTestprocedurecalledmodifiedflaskmethod1.PurposeandapplicationThepresenttestmethoddescribesanecessaryproceduretothemethodoftheformaldehydereleasethevehicleinterior.Theprocedureisappliedtothecheckoftheequabilityoftheproductionofformparts.本程序適用于形狀I(lǐng)tcanbeappliedrestrictedlyforthematerialdevelopmentandtothereceivingcontrol材料開發(fā)和接收控制2.Referencetoothertestingmethodswiththeuseof1m2chamberVDA276-13.NameNameoftheprocedureoftheformaldehydereleasemethod.VDAVDA4.PrincipleInthetest,samplesofcertainmassesanddimensionarefastenedinaclosed1litredPolyethylenewithdistilledwaterandarestoredinsteadytemperatureforadefinedtime.Thebottlesarethenandthedissolvedformaldehydeinthedistilledwaterisdetermined.Theresultisexpressedin.5.ReagentsFortheanalysis,reagentsofanalyticgradeanddistilledordemineralizedwatermustbeused.formaldehydecontentisdeterminedphotometryaftertheAcetylacetonmethod.Nevertheless,proceduresshouldbeallowediftheycorrespondinspecificationstothereferenceprocedureforAcetylacetonp.a.Ammoniumacetatep.a.Remark:Commerciallypre-preparedsolutionscanbeusedwhentheidenticalresultis6.TestequipmentBalancewithrange1mg量程±1mgWellventilatedwarmchamberwhichisabletoholdatemperaturefromCirculatingairwarmchamberwhichisabletoholdatemperaturefrom60±2Testapparatus---1litredPolyethyleneflaskwithalid(seeappendixpicture11公升帶蓋聚乙烯瓶(---Hooksfromhigh-gradesteelwithpoetries,usedinthelidofthetestbottle高級鋼制鉤，用于測試瓶LabDevice--Precisionburette50mlcalibratedat 50ml精密滴定管，20--2Measuringcylinder1000mlcalibratedat20oC21000ml量筒，20--6Measuringcylinder100mlcalibratedat 6100ml量筒，20--Pipette5mlcalibratedat20oC50ml移液管，20--Pipette10mlcalibratedat20oC10ml移液管，20--Pipette15mlcalibratedat20oC15ml移液管，20--Pipette20mlcalibratedat20oC20ml移液管，20--Pipette25mlcalibratedat20oC25ml移液管，20--Pipette50mlcalibratedat20oC50ml移液管，20--Pipette100mlcalibratedat20oC100ml移液管，20--Conicalflask 250ml--Bottle50mlwithstop50ml--Watchglasswithdiameterof120mm120mm--Desiccator--Cuvettewithsuitablethicknessforthespectrophotometer--Stopwatch7.Specimeninteriorparts7.1.2Thesizeofthetestbodiesineachcaseshouldbe40mmsx100mmsxthickness.Atleasttestbodiesaretakenofit5partsforthetestand1forthemoisturecontenttest40mmsx100mmsx65個用于試驗，18.Realizationofthecheck8.1NumberofthecheckTheseareprofessionalmethodtobecarriedout檢查次數(shù):8.2DeterminationofthemoisturecontentThemoisturecontentisdeterminedwithDINEN322DINEN3228.3RegulationoftheformaldehydereleaseThetestbodiesbecomeprecise-weighedoutbeforethebeginningoftheanalysisontheanalysisscaleson0.01gIneachofthePolyethyleneflaskbecome50mldistilledwaterispipetted.0.01g50ml蒸餾水Fortheconnection,thetestbodieswillprovide10mmsoftheupperedgeconcentricwith1to2ofdrillingforthepurposeofconnectioninthehanginghook.10mm的上邊緣同12mm的鉆孔，以連接吊鉤Afterfixingofthetestbodiesinthehook(seeappendix:picture1)thevesselisclosedandiskeptmorethan3hoursinthewarmchamber(6.3)withasteadytemperatureat60oC.將試驗體固定在吊鉤中（1）60℃的恒溫箱（6.3）3小時以上AttheendofthetesttimethevesselsfromthewarmchamberaretakenAfter60minutestabilizingtimeatambienttemperaturethetestbodiesfromthetestbottleareremoved.試驗結(jié)束時，從溫室取出60分鐘后，從試驗瓶中取出試驗體ThecontroltestTheattemptiscarriedoutwithouttestbodyinparallel.Regulationoftheformaldehydeconcentrationintheabsorbentsolution吸收液中甲醛濃度的調(diào)節(jié)TheformaldehydecontentoftheabsorbentsolutionisdetectedbyphotometryaftertheAcetylacetonmethod.用乙酰丙酮法測定吸收液中甲醛的含量TheprincipleThechemicalreaction(seeappendixontheso-calledHantzschen:picture2)withwhichdissolvedformaldehydereactsinsolutionreactwithAmmoniaandAcetylacetontoformDiacetyldihydrolutidin(DDL)TheabsorptionmaximumofDDLis412nmThereactionisspecificforformaldehyde.溶解的甲醛在溶液中與氨和乙酰丙酮反應(yīng)生成二乙酰二水解素（DDL）的化學(xué)反應(yīng)（見所謂的Hantzschen:2附錄）。DDL412nm。這種反應(yīng)是甲醛特有的。ReagentAcetylacetonsolution4mlofAcetylacetonaredispensedina1000mltomeasuringcylinderandismadeupto1000mlwithdistilledwaterThesolutionair-tightedandcanbeusedfor4weeksifkeptawayfromlight.在1000ml4ml1000ml4周Ammoniumacetatesolution200gofammoniumacetateisdispensedina1000mlmeasuringcylinderandmakeupto1000mlwithdistilledwater.10002001000毫升Reaction10mloftheabsorbentsolution(8.3aretakenwithapipetteandaremovedina50mlbottlewith10mlAcetylacetonsolution()and10mlammoniumacetate-solution()Thebottleisclosed,shakenandwarmedupfor15minutesinawaterbathat40oC.Thegreenish-yellowsolutionisthencooledatambienttemperature,protectedfromthesunlight(aboutonehour)Theopticaldensityofthissolutionisdeterminedwithawavelengthof412nmbydistilledwaterwithaSpectrophotometer(6.4)Acontrolisdeterminedinparallelwithdistilledwaterandistakenintoconsiderationwiththecalculationofthebottlesvalue(9.2).10ml吸收液（8.3），并將其移Remark:Aftereverytest,thePEflasksarecleanedinalabwasherShouldthisnotbesufficient,itisadvisablethattheflasksarekeptat70oCopenlyinacirculatingairwarmchamberforapproximately16h.備注：每次測試后，聚乙烯燒瓶在實驗室洗衣機中清洗。如果這還不夠，建議將燒瓶公開地7016小時。CalibrationcurveThecalibrationcurve(seeappendix:pictures3and4)isconstructedbymeansofaformaldehydestandardsolutionwhoseconcentrationwasdeterminedbytitrationwithiodine.Thecalibrationcurvemustbecheckedatleastonceperweek.校準曲線（34）由甲醛標(biāo)準溶液構(gòu)成，其濃度通過Formaldehyde-standardsolutionsreagentsolutionsIodine典c(I2)=0.05mol/Sodiumthiosulfate硫代硫酸鈉c(Na2S2O3)=0.1mol/lSodiumhydroxidec(NaOH)=1mol/lSulfuricacid硫酸c(H2SO4)=1mol/lIndicatorsolution1m/m1%TheTiterofthesolutionsmustbecheckedbeforeuse.About1gofformaldehydesolution(concentrationof35to40%)aresolvedina1000mlmeasuringcylinderwithdistilledwaterandarefilledinuptomark.Theexactformaldehydeconcentrationisdeterminedasfollows:1g甲醛溶液（35%40%）1000ml量筒中，并填充至標(biāo)記處。20mloftheformaldehyde-standardsolutionaremixedwith25mliodinesolutionand10mlmixedsodiumhydroxidesolution.After15minutestabilizingtimeunderlight,15mlsulfuricacidisaddedtothemixture.Theexcessiodinereactswiththethiosulfatesolution.Attheendofthetitrationsome20251015分鐘后，向混合物中加15ml20毫升蒸餾水平行控制Theformaldehydecontentiscalculatedwiththefollowingformula:c(HCHO)(Vo-V)x15[c(Na2S2O3)]x1000/20Where:c(HCHO):Formaldehydeconcentrationinmg/lVo:VolumesofthethiosulfatesolutionforthecontrolinmlV:Volumesinthiosulfatesolutioninml.Vo:V：硫代硫酸鹽c(Na2S2O3)Concentrationofthethiosulfatesolutioninmol/lmol/lRemark1ml0.1mol/lthiosulfatesolutioncorrespondsto1ml0.05mol/lofiodinesolutionand1.5mgofformaldehyde備注：10.1摩爾/10.05摩爾/1.5毫克甲醛Formaldehydecalibrationsolution(withthicknessofthecuvette:1cm)Fromtheformaldehydestandardsolution,determinedin,becomesavolumewhichcontains15mgofformaldehydefromamicroburetteina1000mlmeasuringcylinderandfilledwithdistilledwateruptomarkfilledin1mlofthissolutioncontains15μgformaldehyde.甲醛校準液（比色杯厚度：1cm）從1000ml15mg甲醛的體積，并充滿蒸餾水，直至標(biāo)記填充。115微克甲醛Calibrationcurve0,5,10,20,50or100mlarefilledinbytheformaldehydecalibrationsolution()ina100mlmeasuringcylinderandwithdistilledwateruptomark10mlofsolutionarephotometricallyanalyzedwiththesameprocedureasthatof8.5.3用甲醛校準液（）100ml0、5、10、20、50100ml8.5.310ml溶液進行光度分析。Theopticaldensitiesareappliedagainsttheformaldehydeconcentration(between0and15μg/ml)onstandardcurveTheupwardgradientisdeterminedgraphicallyoriscalculated.根據(jù)標(biāo)準曲線上的甲醛濃度（015微克/毫升之間）施加光密度。向上梯度以圖形方式確定或計算Formaldehydecalibrationsolution(withthicknessofthecuvette:5cm)Fromtheformaldehyde-standardsolution,determinesunder,becomesavolumewhichcontains3mgofformaldehydewithamicroburetteina1000mlmeasuringcylinderandmakeuptomarkwithdistilledwater1mlofthissolutioncontains3μgofformaldehyde.甲醛校準液（比色杯厚度：5cm）與甲1000ml3mg甲醛的體積，并用蒸餾水配制標(biāo)記。3Calibrationcurve0,5,10,20,50or100arefilledinbytheformaldehydecalibrationsolution()mlina100mlmeasuringcylinderandwithdistilledwateruptomark0、5、10、20、50100用甲醛校準液（）ml100ml量筒內(nèi)，用蒸餾水灌滿至刻度10mlofsolutionisphotometricallyanalyzedwiththesameprocedure,asthatof8.5.3.Theopticaldensitiesareappliedagainsttheformaldehydeconcentrations(between0andμg/ml)onstandardcurveTheupwardgradientisdeterminedgraphicallyoriscalculated.根據(jù)標(biāo)準曲線上的甲醛濃度（03微克/毫升之間）施加光密度。向上梯度以圖形方式確定或計算9.Calculationoftheresults9.1MoistcontentThemoistcontentH(inmassesm/moftheformpartarisesfromthefollowingformulaH(m/m)由下式可得m1-H xBesidesis:m1themassesofthetestbodiesbeforethedryingin m1m0themassesofthetestbodiesafterthedryingin m09.2Formaldehydereleasewithflaskmethodmetricalregulationandthewholevolumeoftheabsorbentliquid(here:10ml)investigates.FormaldehydeiscalculatedwiththeweightcorrectedondryweightofthetestbodyinmgkgCalculationoftheformaldehydedeliveryinmg/kg:量的計算(As-AB)xfxVx(100+H)xF=mgHCHO/kgmx10