【英文标准名称】:StandardTestMethodforDecompositionKineticsbyThermogravimetry
【原文标准名称】:用热重分析法的分解动力学用标准试验方法
【标准号】:ASTME1641-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:动力学;温度;试验;热分析;热重分析法
【英文主题词】:Arrheniusactivationenergy;Arrheniuspre-exponentialfactor;kineticparameters;thermaldecomposition;thermogravimetricanalysis
【摘要】:Thermogravimetryprovidesarapidmethodfordeterminingthetemperature-decompositionprofileofamaterial.Thistestmethodcanbeusedforestimatinglifetimesofmaterials,usingTestMethodE1877providedthatarelationshiphasbeenestablishedbetweenthethermalendurancetestresultsandactuallifetimetests.1.1Thistestmethoddescribesthedeterminationofthekineticparameters,Arrheniusactivationenergy,andpreexponentialfactorbythermogravimetry,basedontheassumptionthatthedecompositionobeysfirst-orderkinetics.1.2Thistestmethodisgenerallyapplicabletomaterialswithwell-defineddecompositionprofiles,namely,asmooth,continuousmasschangewithasinglemaximumrate.1.3Thistestmethodisnormallyapplicabletodecompositionoccurringintherangefrom400to1300K(100to1000176;C).Thetemperaturerangemaybeextendeddependingontheinstrumentationused.1.4Computerorelectronic-basedinstruments,techniques,ordatatreatmentequivalenttothistestmethodmayalsobeused.Note18212;Usersofthistestmethodareexpresslyadvisedthatallsuchinstrumentsortechniquesmaynotbeequivalent.Itistheresponsibilityoftheuserofthistestmethodtodeterminethenecessaryequivalencypriortouse.1.5SIunitsarethestandard.1.6ThismethodissimilartoISO11358-2butdiffersinitsmathematicaltreatment.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:71_040_40
【页数】:6P.;A4
【正文语种】: