ASTM D7098-2008e1 用薄膜氧气吸收(TFOUT)催化剂B测定润滑剂氧化稳定性的标准试验方法

作者:标准资料网 时间:2024-05-21 12:16:14  浏览:8606   来源:标准资料网

【英文标准名称】:StandardTestMethodforOxidationStabilityofLubricantsbyThin-FilmOxygenUptake(TFOUT)CatalystB
【原文标准名称】:用薄膜氧气吸收(TFOUT)催化剂B测定润滑剂氧化稳定性的标准试验方法
【标准号】:ASTMD7098-2008e1
【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】:D02.09.0G
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:oxidationstability;sequenceIIIEenginesimulation;TFOUT;Lubricants;Oxidationstability;Thin-filmoxygenuptake(TFOUT)
【摘要】:Thistestmethodwasoriginallydevelopedtoevaluateoxidationstabilityoflubricatingbaseoilscombinedwithadditiveschemistriessimilartothosefoundingasolineengineoilsandservice.Thistestmethodisusefulforscreeningformulatedoilsbeforeenginetests.Withinsimilaradditivechemistriesandbaseoiltypes,therankingofoilsinthistestappearstobepredictiveofrankingincertainenginetests.Whenoilshavingdifferentadditivechemistriesorbaseoiltypearecompared,resultsmayormaynotreflectresultsinenginetests.Onlygasolineengineoilswereusedingeneratingtheprecisionstatementsinthistestmethod.1.1Thistestmethodcoverstheoxidationstabilityoflubricantsbythin-filmoxygenuptake(TFOUT)CatalystB.Thistestmethodevaluatestheoxidationstabilityofpetroleumproducts,anditwasoriginallydevelopedasascreeningtesttoindicatewhetheragivenre-refinedbasestockcouldbeformulatedforuseasautomotiveengineoil(seeTestMethodD4742).Thetestisrunat160x00B0;Cinapressurevesselunderoxygenpressure,andthesamplecontainsametalcatalystpackage,afuelcatalyst,andwatertopartiallysimulateoilconditionsinanoperatingengine.Inaddition,thetestmethodhassincebeenfoundbroadlyusefulasanoxidationtestofpetroleumproducts.1.2Theapplicablerangeoftheinductiontimeisfromafewminutesuptoseveralhundredminutesormore.However,therangeofinductiontimesusedfordevelopingtheprecisionstatementsinthistestmethodwasfrom40to280min.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3.1Exception8212;Pressureunitsareprovidedinpsig,anddimensionsareprovidedininchesinAnnexA1andAnnexA2,becausethesearetheindustryacceptedstandardandtheapparatusisbuiltaccordingtothefiguresshown.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:10P.;A4
【正文语种】:英语