DeterminationofFormaldehydefromVehicleInteriorwithModifiedFlaskMethodVDA275改良烧瓶法测定汽车车内空气中的甲醛Mouldedcompositesandfleecesforvehicles汽车用模制复合材料和绒毛Determinationofformaldehyderelease甲醛释放量的测定Testprocedurecalledmodifiedflaskmethod测试程序成为改良烧瓶法1.Purposeandapplication目的和应用Thepresenttestmethoddescribesanecessaryproceduretothemethodoftheformaldehydereleasefromthevehicleinterior.试验方法描述了从车辆内部释放甲醛的方法的必要步骤Theprocedureisappliedtothecheckoftheequabilityoftheproductionofformparts.本程序适用于形状件生产的均匀性检验Itcanbeappliedrestrictedlyforthematerialdevelopmentandtothereceivingcontrol它可限制应用于材料开发和接收控制.2.Referencetoothertestingmethods参考其他测试方法VDA276-Measuringprocedureofformaldehyde,ammoniaandphenolsreleaseformthevehicleinteriorwiththeuseof1m2chamber.VDA276-使用1平方米的试验箱测量车辆内部甲醛、氨和酚的释放量3.Name名称Nameoftheprocedureoftheformaldehydereleasemethod.VDA275.甲醛释放方法的程序名称VDA2754.Principle原则Inthetest,samplesofcertainmassesanddimensionarefastenedinaclosed1litredPolyethyleneflaskwithdistilledwaterandarestoredinsteadytemperatureforadefinedtime.Thebottlesarethencooledandthedissolvedformaldehydeinthedistilledwaterisdetermined.Theresultisexpressedinweight(mg/kg).在试验中,一定质量和尺寸的样品用蒸馏水固定在一个密闭的1公升聚乙烯烧瓶中,并在规定的时间内保持稳定的温度。然后冷却瓶子,测定蒸馏水中溶解的甲醛。结果以重量(mg/kg)表示5.Reagents试剂Fortheanalysis,reagentsofanalyticgradeanddistilledordemineralizedwatermustbeused.TheformaldehydecontentisdeterminedphotometryaftertheAcetylacetonmethod.Nevertheless,otherproceduresshouldbeallowediftheycorrespondinspecificationstothereferenceprocedurefortheanalysis分析时,必须使用分析级试剂和蒸馏水或除盐水。用乙酰丙酮法测定甲醛含量。然而,如果其他程序与分析的参考程序的规范一致,则应允许使用这些程序5.1Acetylacetonp.a.乙酰丙酮5.2Ammoniumacetatep.a.醋酸铵Remark:Commerciallypre-preparedsolutionscanbeusedwhentheidenticalresultisachieved.备注:当达到相同的结果时,可以使用商业预处理溶液6.Testequipment试验设备6.1Balancewithrange±1mg量程±1mg的天平6.2Wellventilatedwarmchamberwhichisabletoholdatemperaturefrom103±2ºC.通风良好的暖室,能够保持103±2℃的温度6.3Circulatingairwarmchamberwhichisabletoholdatemperaturefrom60±2ºC循环空气暖室,能够保持60±2℃的温度6.4Spectrophotometer分光光度计6.5Testapparatus试验装置---1litredPolyethyleneflaskwithalid(seeappendixpicture1)1公升带盖聚乙烯瓶(见附件图1)---Hooksfromhigh-gradesteelwithpoetries,usedinthelidofthetestbottle高级钢制钩,用于测试瓶盖6.6Lab.Device实验室设备--Precisionburette50ml,calibratedat20ºC50ml精密滴定管,20℃校准--2Measuringcylinder,1000ml,calibratedat20ºC2个1000ml量筒,20℃校准--6Measuringcylinder,100ml,calibratedat20ºC6个100ml量筒,20℃校准--Pipette,5ml,calibratedat20ºC50ml移液管,20℃校准--Pipette,10ml,calibratedat20ºC10ml移液管,20℃校准--Pipette,15ml,calibratedat20ºC15ml移液管,20℃校准--Pipette,20ml,calibratedat20ºC20ml移液管,20℃校准--Pipette,25ml,calibratedat20ºC25ml移液管,20℃校准--Pipette,50ml,calibratedat20ºC50ml移液管,20℃校准--Pipette,100ml,calibratedat20ºC100ml移液管,20℃校准--Conicalflask,250ml250ml锥形瓶--Bottle,50mlwithstop50ml瓶子,带塞子--Watchglasswithdiameterof120mm120mm表面皿--Desiccator干燥器--Cuvettewithsuitablethicknessforthespectrophotometer分光光度计用合适...