【英文标准名称】:StandardTestMethodforDeterminingFormaldehydeLevelsfromWoodProductsUsingaDesiccator
【原文标准名称】:用干燥器测定木制品中甲醛水平的标准试验方法
【标准号】:ASTMD5582-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:air-borne;chromotropicacid;formaldehydelevels;small-scale;woodproducts
【摘要】:Limitationsonformaldehydelevelshavebeenestablishedforwoodpanelbuildingproductsmadewithurea-formaldehydeadhesivesandpermanentlyinstalledinhomesorusedascomponentsinkitchencabinetsandforsimilarindustrialproducts.ThistestmethodisusedinconjunctionwiththetestmethodreferencedbyHUDRulesandRegulations24CFR3280formanufacturedhousingandbyMinnesotaStatutesSection144.495forhousingunitsandbuildingmaterials.Thistestmethodprovidesameansoftestingsmall-sizesamplestodetermineformaldehydeemissionpotential.Thistestmethodincorporatesadesiccator,withthedesiccantremoved,havinga250-mm(10-in.)insidediameterandavolumeofapproximately10.5L(641in.)withthedesiccatorlidinplace.Conditionscontrolledintheprocedureareasfollows:3.2.1Conditioningofpanelproductspriortotesting,3.2.2Specifiednumber,size,andedgesealingofwoodspecimenstobeplacedinthedesiccator,3.2.3Testdesiccatortemperature,and3.2.4Samplesfromthe25-mLdistilledwatercollectionmediuminthepetridishbottomareanalyzedforformaldehydeattheendofa2-hperiodinthecloseddesiccator.Thistestmethodemploysasinglesetofenvironmentalconditionstoassessformaldehydeemissionpotentialfromcertainwoodproducts.Whentherelationshipbetweendesiccatortestvaluesandlarge-chambertestvaluesaretobedetermined,thevaluesforthespecificwoodpanelproducttypeshallbeplotted.Thistestmethoddoesallowacomparisonofformaldehydelevelsfromdifferentproductsforthesameuse.Note28212;Caremustbeexercisedintheextensionoftheresultstoactualformaldehydeemissionfromproductsunderactualuseconditions.1.1Thistestmethodcoversasmallscaleprocedureformeasuringformaldehydeemissionpotentialfromwoodproducts.Theformaldehydelevelisdeterminedbycollectingair-borneformaldehydeinasmalldistilledwaterreservoirwithinacloseddesiccator.ThequantityofformaldehydeisdeterminedbyamodificationoftheNationalInstituteforOccupationalSafetyandHealth(NIOSH)3500chromotropicacidtestprocedure.Otheranalyticalproceduresmaybeusedtodetermineformaldehydeemissionpotentialprovidedthatsuchmethodsgivesimilarresultstothechromotropicacidprocedure.However,thetestresultsandtestreportmustbeproperlyqualifiedandtheanalyticalprocedureemployedmustbenoted.Proceduresbasedonacetylacetoneandpararosanilinehavebeenfoundtogivesimilarresultstochromotropicacidinothertestmethodsusedindeterminingformaldehydeemissionpotentialfromwoodproducts(seeTestMethodE1333).1.2Woodproductstypicallyevaluatedbythistestmethodaremadewithurea-formaldehydeadhesivesandincludeparticleboard,hardwood,plywood,andmedium-densityfiberboard.Thistestmethodisusedforproductqualitycontrolandisasmallbenchtestmethodthatcorrelateswiththelarge-scaleacceptancetestfordeterminingformaldehydelevelsfromwoodproducts,TestMethodE1333.Thegeneraldesiccatortestingproceduremaybemodifiedfordifferentconditioningtimestoaccommodateitsuseinmanufacturingqualitycontrol.However,thetestresultsmustbeproperlyqualifiedandtheconditioningtimeemployedmustbenoted.Note1Ifmodificationsaremadetotheconditioningperiodforqualitycontrolpurposes,itisimportantthatthemodificationisconsistentlyapplied.Otherwise,theresultsmaynotbecomparable.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibi......
【中国标准分类号】:Q09;A80;P0
【国际标准分类号】:71_100_50
【页数】:7P.;A4
【正文语种】:


【英文标准名称】:Environmentaltesting-Part3-12:Supportingdocumentationandguidance-Methodtoevaluateapossiblelead-freesolderreflowtemperatureprofile
【原文标准名称】:环境试验.第3-12部分:支持文件和指南.评估可能发生的无铅焊料回流温度曲线方法
【标准号】:IEC/TR60068-3-12-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC91
【标准类型】:()
【标准水平】:()
【中文主题词】:温度变化过程;文献工作;电气工程;电子设备及元件;环境试验;评定;指导手册;无铅;糊状钎焊料;轮廓;回流焊接;焊接接头;软钎焊;耐钎焊温度;钎焊;温度;温度曲线图;温度范围;热应力
【英文主题词】:
【摘要】:
【中国标准分类号】:A21
【国际标准分类号】:19_040;25_160_50
【页数】:16P;A4
【正文语种】:英语