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【英文标准名称】:TestMethodforDeterminingMolecularWeightDistributionandMolecularWeightAveragesofPolyolefinsbyHighTemperatureGelPermeationChromatography
【原文标准名称】:高温胶化渗透色谱法测定聚烯烃分子重量分布和平均分子重量的方法
【标准号】:ANSI/ASTMD6474-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:2000-01-18
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分子量;化学分析和试验;化工技术;胶化渗透色谱法
【英文主题词】:chemicaltechnology;molecularweight;chemicalanalysisandtesting;gelpermeationchromatography
【摘要】:Thistestmethodcoversthedeterminationofmolecularweightdistributionsandmolecularweightaveragesoflinearpolyolefinsbyhightemperaturegelpermeationchromatography(GPC).Thistestmethodusescommerciallyavailablepolystyrenestandardsandequipmentandisapplicabletopolyethylenes(excludinghighpressurelowdensitypolyethylene-LDPE)andpolypropylenessolublein1,2,4-trichlorobenzene(TCB)at140C.Thistestmethodisnotabsoluteandrequirescalibration.Note1Sizeexclusionchromatography(SEC)oftenisusedasanalternativenameforgelpermeationchromatography(GPC).Note2Specificmethodsandcapabilitiesofusersmayvarywithdifferencesincolumns,instrumentation,applicationssoftware,andpracticesbetweenlaboratories.Note3Onegeneralmethodisoutlinedherein;alternativeanalyticalpracticescanbefollowedandareattachedinnoteswhereappropriate.Note4ThereisnosimilarorequivalentISOstandard.ThevaluesstatedinSIunits,basedonIEEE/ASTMS1-10,aretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:71_040_50
【页数】:
【正文语种】:英语