ASTM E1858-2003 用差示扫描量热法测定烃类氧化感应时间的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingOxidationInductionTimeofHydrocarbonsbyDifferentialScanningCalorimetry
【原文标准名称】:用差示扫描量热法测定烃类氧化感应时间的标准试验方法
【标准号】:ASTME1858-2003
【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(ASTM)
【起草单位】:E37.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验方法;氧化;烃类
【英文主题词】:differentialscanningcalorimetry;hydrocarbons;isothermaltemperature;oxidation;oxidationinductiontime;oxidativestability;pressuredifferentialscanningcalorimetry
【摘要】:Oxidativeinductiontimeisarelativemeasureofthedegreeofoxidativestabilityofthematerialevaluatedattheisothermaltemperatureofthetest.Thepresence,quantityoreffectivenessofantioxidantsmaybedeterminedbythismethod.TheOITvaluesthusobtainedmaybecomparedfromonehydrocarbontoanotherortoareferencematerialtoobtainrelativeoxidativestabilityinformation.Typicalusesincludetheoxidativestabilityofedibleoilsandfats(oxidativerancidity),lubricants,greases,andpolyolefins.1.1Thistestmethoddescribesthedeterminationoftheoxidativepropertiesofhydrocarbonsbydifferentialscanningcalorimetryorpressuredifferentialscanningcalorimetryandisapplicabletohydrocarbonsthatoxidizeexothermicallyintheiranalyzedform.1.2Computerorelectronic-basedinstruments,techniquesordatatreatmentequivalenttothistestmethodmayalsobeused.Note18212;Sinceallelectronicdatatreatmentsarenotequivalent,theusershallverifyequivalencytothismethod.1.3TestMethodA8212;Adifferentialscanningcalorimeter(DSC)isusedatambientpressure,forexample,about100kPaofoxygen.1.4TestMethodB8212;ApressureDSC(PDSC)isusedathighpressure,forexample,3.5MPa(500psig)oxygen.1.5SIvaluesarethestandard.1.6ThistestmethodisrelatedtoISO11357-6butisdifferentintechnicalcontent.ThistestmethodisrelatedtoCECL-85-Tbutincludesadditionalexperimentalconditions.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninNote6andNote14.
【中国标准分类号】:G16
【国际标准分类号】:
【页数】:6P.;A4
【正文语种】: