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【英文标准名称】:StandardTestMethodforDeterminingtheUnreactedMonomerContentofLatexesUsingCapillaryColumnGasChromatography
【原文标准名称】:利用毛细管柱气相色谱法测定乳胶中未反应单体含量的标准试验方法
【标准号】:ASTMD4827-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:试验;分析;胶乳;气相色谱法
【英文主题词】:gaschromatography;gaschromatography(capillarycolumn);latexpaints;latexvehicles;monomer(unreacted);unreactedmonomercontent
【摘要】:Excessiveamountsofunreactedmonomermaycauseconcernsrelatingtotoxicityandodor.Thistestmethodisdesignedtomeasuretheunreactedmonomercontentoflatexes.Theresultsmaybeusedtomonitortheextentofpolymerizationduringmanufacture,aswellastoestablishmaximumunreactedmonomercontentforregulatorypurposes.1.1Thistestmethodisforthedeterminationoftheunreactedmonomercontentofacryliclatexes.Monomersthathavebeensuccessfullydeterminedbythisprocedureincluden-butylmethacrylate,n-butylacrylate,styrene,andmethylmethacrylate.Thedeterminationofothermonomershasnotbeenevaluated,butthistestmethodisbelievedtobeapplicable.Theestablishedworkingrangeofthistestmethodisfrom100to1000g/g,butthereisnoreasontobelieveitwillnotworkoutsideofthisrange,providedthatappropriatedilutionsandadjustmentsinspecimensizearemade.1.2Theunreactedmonomerinacryliclatexesisexpectedtochangewithtimeandenvironmentalfactors.Thistimedependenceofthedeterminationmaybeseenasanartificiallylargedeviationofresults,makingthetestmethodmostlyapplicableforin-housequalitycontrol,wheresamplingandanalysisconditionscanbebettercontrolled.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:G34
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】: