ASTM D2982-2007 检测已用润滑油中乙二醇基防冻剂的标准试验方法

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【英文标准名称】:StandardTestMethodsforDetectingGlycol-BaseAntifreezeinUsedLubricatingOils
【原文标准名称】:检测已用润滑油中乙二醇基防冻剂的标准试验方法
【标准号】:ASTMD2982-2007
【标准状态】:现行
【国别】:美国
【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】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:glycol-baseantifreeze;glycol-basecoolant;usedlubricatingoil;Enginecoolants/concentrates;Ethyleneglycol;Glycol-baseantifreeze;Lubricatingoils;Mineraloils;Usedlubricatingoils
【摘要】:Leakageofglycol-baseantifreezeintothecrankcaseisseriousbecausethecoolanttendstointerferewiththelubricantanditsabilitytolubricate;italsopromotessludging.Ethyleneglycolpresentinthecoolantcanincreasevarnishdepositformationinthecrankcaseasaresultofglycoloxidationandtheinteractionbetweenglycolandlubricant.Furthermore,becauseglycolisahigherboilingmaterialthanwater,itwilltendtostaylongerinthecrankcaseoilthanwater.Lubricantdisplacement,sludging,anddepositformationallleadtoenginemalfunctionandpossibleseizure.Thesetestsaredesignedtodetectglycol-basecoolantcontaminationevenatlowlevelsbecauseearlydetectionenablescorrectivemeasurestobetakentopreventleakingcoolantfromaccumulatingandseriouslydamagingtheengine.Thesetestmethodsarealsosignificantbecausethereagentscanbepackagedasafieldkit,andtheprocedurecanbefollowedatthesitewherethereisaconcern.1.1Thesetestmethodscoverthequalitativedeterminationofglycol-baseantifreezeinusedlubricatingoils(mineralbase)bytwoprocedures,oneusingreagentsintabletformandtheotherusinglaboratoryshelfreagents.Principallythetestmethodsdetectethyleneglycolbutwillalsodetectother1,2-glycolsthatmaybepresent.1.1.1Whenapositiveresultisobtainedandasampleoftheunusedoilisavailable,theunusedoilisalsotestedandusedasareference.Note18212;Sincetheinceptionofthistestmethod(1971),therehavebeenmanychangesinbasestocktechnologyandadditivetechnology.Therefore,whenavailable,thenew,unusedoil,orasampleofthesameusedoil,knowntonotcontainantifreeze,istestedasareference.1.2Thetabletprocedure(ProcedureA)issensitivetoabout100mg/kgandtheshelfreagentprocedure(ProcedureB)toabout300mg/kgofethyleneglycol.1.3Glycol-basedcoolantleaksintocrankcasesmaynotbedetectedormayresultinalowbiasusingthesetestmethodsiftheglycolhasdegradedorbeenthermallyorotherwiseoxidized.Theconditionsincrankcasesmaybesuchthatcontaminantglycolsareoxidizedordegradedtoadegreetowhichthecolorindicatorreactiondoesnotoccurorisbiasedenoughsoastonottriggerthecolorchange.Othertestmethodsforthedetectionofcoolantsorcoolantadditivesinlubricatingoilsshouldbeusediftheresultsfromthesetestmethodsaloneareinconclusiveorquestionable.1.4Carbohydratessuchassugarsandsugar-containingsubstancesaresometimesusedforsabotagepurposes.Ifthepresenceofthesesubstancesissuspected,ProcedureAcontainsamodificationtoremovetheseinterferences.1.5Bothproceduresareadaptabletofieldkituse,andbriefdescriptionsforconvertingtofieldkitformaregiveninAnnexA1.Commercialfieldtestingkitsareavailable.,1.6Theresultsobtainedbythismethodarequalitativeexpressions.However,forthepreparationofreagentsandintheprocedures,acceptableSIunitsaretoberegardedasthestandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:5P.;A4
【正文语种】:英语