ASTM D4275-2002 用气相色谱法测定乙烯和乙烯-乙烯基醋酸酯共聚物的聚合物中丁酸化羟基甲苯的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationofButylatedHydroxyToluene(BHT)inPolymersofEthyleneandEthylene-VinylAcetate(EVA)CopolymersByGasChromatography
【原文标准名称】:用气相色谱法测定乙烯和乙烯-乙烯基醋酸酯共聚物的聚合物中丁酸化羟基甲苯的标准试验方法
【标准号】:ASTMD4275-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;高聚物
【英文主题词】:butylatedhydroxytoluene;BHT;ethylene-vinylacetate;gaschromatography;polyethylene
【摘要】:Separationandidentificationofstabilizersusedinthemanufactureofpolyethylenearenecessaryinordertocorrelateperformancepropertieswithpolymercomposition.TheBHTextractionprocedureismadeeffectivebytheinsolubilityofthepolymersampleinsolventsgenerallyusedforgaschromatographicanalysis.1.1Thistestmethoddescribesaprocedureforthedeterminationofbutylatedhydroxytoluene(BHT)(2,6-di-t-butyl-4-methyl-hydroxybenzene)inpolymersofethyleneandethylene-vinylacetate(EVA)copolymersbysolventextractionfollowedbygaschromatographicanalysis.Detectionofthecompoundisachievedbyflameionization,andquantitativeanalysisisobtainedbyuseofinternalorexternalstandards,asdescribedinPracticesE260,E355,andE594.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection9.Note18212;ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:3P.;A4
【正文语种】: