【英文标准名称】:StandardTestMethodforMeasuringTotalWaterandVolatilesinLiquidCoatingsWhichProduceCureWaterUponHeating
【原文标准名称】:测定含水总量和加热产生固化水的液体涂层中挥发物含量的标准试验方法
【标准号】:ASTMD7245-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D01.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:condensationreaction;curewater;dryingoven;KarlFischer;totalwater;VOC;volatile;volatileorganiccontent;Condensation;Dryingoven;Liquidcoatings;Volatileorganiccompounds(VOC)
【摘要】:InthedeterminationofVOC,curewateristreatedasaVOCinothertestmethods,asthesemethodsareunabletoaccountforcurewater.Thistestmethodallowstakingcreditforcurewaterastotalwaterismeasured,avaluewhichincludescurewater.TotalwatercontentandvolatilecontentresultsobtainedwiththismethodmaybeusedinPracticeD3960tocalculateVOCofthecoating.1.1Thistestmethodisdesignedtomeasuretotalwaterwhichincludescurewaterresultingfromtheheatinducedcondensationreactionofcoatings.CurewatercannotbemeasureddirectlybyTestMethodD4017.Thistaskisaccomplishedbymeasuringwatercontentinthevaporsevolvedduringheating.Thistestmethodwillyieldtotalwatercontent.Thistestmethodalsopermitsforthesimultaneousdeterminationoftotalvolatilecontent.TheresultsofthistestmethodmaybeusedtocalculateVOCcontent.Althoughthistestmethodwasdesignedforphenoliccoatings,itcanbeusedwithothertypesofcoatings.1.2Materialsusedformethoddevelopmentandevaluationhadtotalwatervaluesfrom20to37%.Useofthistestmethodoncoatingsoutsidethesevalueswillneedtobevalidatedbytheuser.1.3SampleheatingisaccomplishedwithaBrinkmannInstrumentsModel832dryingoven,orothermutuallyagreeduponalternative,passingalloftheevolvedvaporsintoaKarlFischertitrationvessel.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:87_040
【页数】:4P.;A4
【正文语种】:英语