ASTM D7527-2010 线性扫描伏安法测定润滑脂中的抗氧化剂含量的标准试验方法
作者:标准资料网
时间:2024-05-12 08:44:17
浏览:8023
来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforMeasurementofAntioxidantContentinLubricatingGreasesbyLinearSweepVoltammetry
【原文标准名称】:线性扫描伏安法测定润滑脂中的抗氧化剂含量的标准试验方法
【标准号】:ASTMD7527-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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.G0.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:2,6-di-tert-butyl-4methylphenol;2,6-di-tert-butylphenol;alkylateddiphenylamine;aromaticamineantioxidant;grease;hinderedphenolantioxidant;linearsweepvoltammetry;phenylalphanaphthylami
【摘要】:Thequantitativedeterminationofantioxidantsinnewgreasesmeasurestheamountofthechemicalcompoundsthatwereaddedtothebaseoilasprotectionagainstgreaseoxidation.Forin-serviceoilgreases,thevoltammetrictestmethodmeasurestheamountoforiginal(individual)antioxidantsremainingaftergreaseoxidationhavereduceditsconcentration.Beforemakingfinaljudgmentontheremainingusefullifeofthein-servicegrease,whichmightresultinthereplacementofthegreasereservoir,itisadvisedtoperformadditionalanalyticaltechniques,suchasTestMethodD942andD5483,whichmaybeusedtomeasuretheremainingoxidativelifeoftheusedgrease.4.1.1Thistestmethodisapplicabletomineraloil-basedandsyntheticoil-basedgreases,basedonalltypeofappliedthickeners.Thistestmethodisapplicabletogreasescontainingatleastonetypeofantioxidant.Thepresenceofothertypesofadditiveslikecorrosioninhibitorsormetaldeactivatorswillnotinterferewiththistestmethod.1.1Thistestmethodcoversthevoltammetricdeterminationofantioxidantsinneworin-servicelubricatinggreasesinconcentrationsfrom0.0075weightpercentuptoconcentrationsfoundinnewgreasesbymeasuringtheamountofcurrentflowataspecifiedvoltageintheproducedvoltammogram.1.2Thistestmethodisintendedtomonitortheantioxidantcontentinlubricatinggreases;itcannotbeappliedforlubricatinggreasesthatdonotcontainantioxidants.1.3Thistestmethodisdesignedtoallowtheusertomonitortheantioxidantdepletionrateofin-servicegreasesthroughitslifecycleaspartofconditionmonitoringprograms.Thistestmethodisperformedinordertocollectandtrendearlysignsofdeterioratinglubricantgrease,anditmaybeusedasaguideforthedirectionofanyrequiredmaintenanceactivities.Thiswillensureasafe,reliable,andcost-effectiveoperationofthemonitoredplantequipment.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E36
【国际标准分类号】:75_100
【页数】:6P.;A4
【正文语种】:英语
【原文标准名称】:线性扫描伏安法测定润滑脂中的抗氧化剂含量的标准试验方法
【标准号】:ASTMD7527-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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.G0.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:2,6-di-tert-butyl-4methylphenol;2,6-di-tert-butylphenol;alkylateddiphenylamine;aromaticamineantioxidant;grease;hinderedphenolantioxidant;linearsweepvoltammetry;phenylalphanaphthylami
【摘要】:Thequantitativedeterminationofantioxidantsinnewgreasesmeasurestheamountofthechemicalcompoundsthatwereaddedtothebaseoilasprotectionagainstgreaseoxidation.Forin-serviceoilgreases,thevoltammetrictestmethodmeasurestheamountoforiginal(individual)antioxidantsremainingaftergreaseoxidationhavereduceditsconcentration.Beforemakingfinaljudgmentontheremainingusefullifeofthein-servicegrease,whichmightresultinthereplacementofthegreasereservoir,itisadvisedtoperformadditionalanalyticaltechniques,suchasTestMethodD942andD5483,whichmaybeusedtomeasuretheremainingoxidativelifeoftheusedgrease.4.1.1Thistestmethodisapplicabletomineraloil-basedandsyntheticoil-basedgreases,basedonalltypeofappliedthickeners.Thistestmethodisapplicabletogreasescontainingatleastonetypeofantioxidant.Thepresenceofothertypesofadditiveslikecorrosioninhibitorsormetaldeactivatorswillnotinterferewiththistestmethod.1.1Thistestmethodcoversthevoltammetricdeterminationofantioxidantsinneworin-servicelubricatinggreasesinconcentrationsfrom0.0075weightpercentuptoconcentrationsfoundinnewgreasesbymeasuringtheamountofcurrentflowataspecifiedvoltageintheproducedvoltammogram.1.2Thistestmethodisintendedtomonitortheantioxidantcontentinlubricatinggreases;itcannotbeappliedforlubricatinggreasesthatdonotcontainantioxidants.1.3Thistestmethodisdesignedtoallowtheusertomonitortheantioxidantdepletionrateofin-servicegreasesthroughitslifecycleaspartofconditionmonitoringprograms.Thistestmethodisperformedinordertocollectandtrendearlysignsofdeterioratinglubricantgrease,anditmaybeusedasaguideforthedirectionofanyrequiredmaintenanceactivities.Thiswillensureasafe,reliable,andcost-effectiveoperationofthemonitoredplantequipment.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E36
【国际标准分类号】:75_100
【页数】:6P.;A4
【正文语种】:英语
下载地址:
点击此处下载