【英文标准名称】:StandardTestMethodforHydrocarbonTypes,OxygenatedCompoundsandBenzeneinSparkIgnitionEngineFuelsbyGasChromatography
【原文标准名称】:用气相色谱法测定火花点火发动机燃料中烃类、氧饱和化合物及苯含量的标准试验方法
【标准号】:ASTMD6839-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D02.04.0L
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aromatics;gaschromatography;gasoline;hydrocarbontype;multidimensionalgaschromatography;naphthenes;olefins;oxygenates;saturates;spark-ignitionenginefuels;Aromatichydrocarbons(AHs);EAA(ethyl-alcohol-aromatic)trap;Gaschromatography(GC
【摘要】:Aknowledgeofspark-ignitionenginefuelcompositionisusefulforregulatorycompliance,processcontrol,andqualityassurance.Thequantitativedeterminationofolefinsandotherhydrocarbontypesinspark-ignitionenginefuelsisrequiredtocomplywithgovernmentregulations.ThistestmethodisnotapplicabletoM85andE85fuels,whichcontain85%methanolandethanol,respectively.1.1Thistestmethodcoversthequantitativedeterminationofsaturates,olefins,aromaticsandoxygenatesinspark-ignitionenginefuelsbymultidimensionalgaschromatography.Eachhydrocarbontypecanbereportedeitherbycarbonnumber(seeNote1)orasatotal.Note18212;TherecanbeanoverlapbetweentheC9andC10aromatics;however,thetotalisaccurate.IsopropylbenzeneisresolvedfromtheC8aromaticsandisincludedwiththeotherC9aromatics.1.2Thistestmethodisapplicabletospark-ignitionenginefuelwithtotalaromaticcontentupto50%(V/V),totalolefiniccontentupto30%(V/V)andoxygencompoundsupto15%(V/V).1.3Thistestmethodisnotintendedtodetermineindividualhydrocarboncomponentsexceptbenzene.1.4OxygenatesasspecifiedinTestMethodD4815havebeenverifiednottointerferewithhydrocarbons.Withintheroundrobinsampleset,thefollowingoxygenateshavebeentested:MTBE,ethanol,ETBE,andTAME.OtheroxygenatescanbedeterminedandquantifiedusingTestMethodD4815orD5599.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:71_040_40
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:StandardGuideforIdentificationofFibers,Fillers,andCoreMaterialsinComputerizedMaterialPropertyDatabases
【原文标准名称】:计算机处理的材料性能数据库中纤维、填充料和磁心材料的识别
【标准号】:ASTME1471-1992(2004)
【标准状态】:现行
【国别】:
【发布日期】:1992
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D30.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:编目;填充料;材料;数据基础
【英文主题词】:computerization;corematerial;fiber;filler;materialsdatabases;materialidentification
【摘要】:Thisguidedefinestheinformationwhichisconsideredessentialtouniquelydescribeafiber,filler,orcorematerialinacomputerizeddatabase.Aformatisrecommendedforplacingthesedatainfieldssuitableforacomputerizeddatabase.Additionalfieldswhichareconsidereddesirable,butnotessential,arealsodefined.Thepurposeistofacilitateefficientstorageandretrievaloftheinformationwithacomputerandtoallowmeaningfulcomparisonofdatafromdifferentsources.Comparisonofpropertydatafromdifferentsourceswillbemostmeaningfulifalltheessentialinformationdefinedbytheguidelinesispresent.Comparisonmaystillbepossibleifessentialinformationisomitted,butthevalueofthecomparisonmaybegreatlyreduced.Whileatthistimethereisnogenerallyacceptednumberingsystemforthesematerials,analogoustothoseformetalsandalloys,afieldforanidentifyingnumber(MaterialReferenceNumber)isincludedshouldsuchasystembedevelopedinthefuture.Thisinformationshouldnotbeconsideredrestrictive.Forexample,adatabasedesignermayfinditusefultoaggregateseveralfields,suchasthematerialandchemicalclassfields,intoasinglefield.Thismayaffectsearchstrategiesandotherdatabaseoperations.Theseconsiderationsarebeyondthescopeofthisguide.1.1Thisguideestablishestheessentialanddesirableelementsofdatarequiredfortheidentificationincomputerizedmaterialpropertydatabasesoffibers,fillers,andcorematerialsusedincompositematerials.Arecommendedformatforentryofthesefieldsintoacomputerizeddatabaseisprovided.Examplesoftheapplicationofthisguidearealsoincluded.1.2Therecommendedformatdescribedinthisguideissuggestedforuseinrecordingdatainadatabase,whichisdifferentfromcontracturalreportingofactualtestresults.Thelattertypeofinformationisdescribedinmaterialsspecificationsshowninbusinesstransactionsandissubjecttoagreementbetweenvendorandpurchaser.1.3Thematerialscoveredbythisguideincludefibers,bothcontinuousanddiscontinuous,andfillersofvariousgeometrieswhichareusedasreinforcementsincompositematerials,aswellascorematerialsusedinsandwichcomposites.Coresmaybefoam,honeycomb,ornaturallyoccurringmaterialssuchasbalsawood.Thesematerialsaredistinguishedfrombulkmaterialsbytheimportanceoftheirspecializedgeometricformstotheirproperties.Thisdifferenceisreflectedintheuseofgeometry,alongwithchemistry,asaprimarybasisforclassification.IdentificationofcompositematerialsisdiscussedinGuideE1309.
【中国标准分类号】:L70
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】: