【英文标准名称】:StandardTestMethodforOxidationOnsetTemperatureofHydrocarbonsbyDifferentialScanningCalorimetry
【原文标准名称】:用差别扫描热量测定法测定烃类氧化开始温度的标准试验方法
【标准号】:ASTME2009-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E37.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:differentialscanningcalorimetry;differentialthermalanalysis;hydrocarbons;oxidation;oxidationinductiontime(OIT);oxidationonsettemperature(OOT);oxidativestability;pressuredifferentialscanningcalorimetry;Differentialscanningcalorimetr
【摘要】:Oxidationonsettemperatureisarelativemeasureofthedegreeofoxidativestabilityofthematerialevaluatedatagivenheatingrateandoxidativeenvironment,forexample,oxygen;thehighertheOOTvaluethemorestablethematerial.TheOOTisdescribedinFig.1.TheOOTvaluescanbeusedforcomparativepurposesandarenotanabsolutemeasurement,liketheoxidationinductiontime(OIT)ataconstanttemperature(seeTestMethodE1858).Thepresenceoreffectivenessofantioxidantsmaybedeterminedbythistestmethod.Typicalusesofthistestmethodincludetheoxidativestabilityofedibleoilsandfats(oxidativerancidity),lubricants,greases,andpolyolefins.FIG.1DSCOxidationOnsetTemperature(OOT),ExtrapolatedOnsetTemperature1.1Thistestmethoddescribesthedeterminationoftheoxidativepropertiesofhydrocarbonsbydifferentialscanningcalorimetryorpressuredifferentialscanningcalorimetryunderlinearheatingrateconditionsandisapplicabletohydrocarbons,whichoxidizeexothermicallyintheiranalyzedform.1.2TestMethodA8212;Adifferentialscanningcalorimeter(DSC)isusedatambientpressure,ofoneatmosphereofoxygen.1.3TestMethodB8212;ApressureDSC(PDSC)isusedathighpressure,forexample,3.5MPa(500psig)oxygen.1.4TestMethodC8212;Adifferentialscanningcalorimeter(DSC)isusedatambientpressureofoneatmosphereofair.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G16
【国际标准分类号】:17_200_10
【页数】:5P.;A4
【正文语种】:英语