ASTM D6474-1999(2006) 高温凝胶渗透色谱法测定聚烯烃分子量分布和平均分子量的标准试验方法
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【英文标准名称】:StandardTestMethodforDeterminingMolecularWeightDistributionandMolecularWeightAveragesofPolyolefinsbyHighTemperatureGelPermeationChromatography
【原文标准名称】:高温凝胶渗透色谱法测定聚烯烃分子量分布和平均分子量的标准试验方法
【标准号】:ASTMD6474-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:平均分子量;分子量分布;尺寸排除色谱法;凝胶渗透色谱法;聚烯烃
【英文主题词】:gelpermeationchromatography;molecularweightaverage;molecularweightdistribution;polyolefin;sizeexclusionchromatography
【摘要】:Thistestmethodmeasuresthemolecularweightdistributionandmolecularweightaveragesofpolyethylene(exceptLDPE)andpolypropyleneresins.Differencesinmolecularweightandmolecularweightdistributionsignificantlyaffectphysicalproperties,suchasmorphology,strength,meltflowetc.,andasaresult,thefinalpropertiesofproductsmadefromtheseresins.1.1Thistestmethodcoversthedeterminationofmolecularweightdistributionsandmolecularweightaveragesoflinearpolyolefinsbyhightemperaturegelpermeationchromatography(GPC).Thistestmethodusescommerciallyavailablepolystyrenestandardsandequipmentandisapplicabletopolyethylenes(excludinghighpressurelowdensitypolyethylene-LDPE)andpolypropylenessolublein1,2,4-trichlorobenzene(TCB)at140C.Thistestmethodisnotabsoluteandrequirescalibration.Note1Sizeexclusionchromatography(SEC)oftenisusedasanalternativenameforgelpermeationchromatography(GPC).Note2Specificmethodsandcapabilitiesofusersmayvarywithdifferencesincolumns,instrumentation,applicationssoftware,andpracticesbetweenlaboratories.Note3Onegeneralmethodisoutlinedherein;alternativeanalyticalpracticescanbefollowedandareattachedinnoteswhereappropriate.Note4ThereisnosimilarorequivalentISOstandard.1.2ThevaluesstatedinSIunits,basedonIEEE/ASTMS1-10,aretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:83_080_20
【页数】:6P.;A4
【正文语种】:
【原文标准名称】:高温凝胶渗透色谱法测定聚烯烃分子量分布和平均分子量的标准试验方法
【标准号】:ASTMD6474-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:平均分子量;分子量分布;尺寸排除色谱法;凝胶渗透色谱法;聚烯烃
【英文主题词】:gelpermeationchromatography;molecularweightaverage;molecularweightdistribution;polyolefin;sizeexclusionchromatography
【摘要】:Thistestmethodmeasuresthemolecularweightdistributionandmolecularweightaveragesofpolyethylene(exceptLDPE)andpolypropyleneresins.Differencesinmolecularweightandmolecularweightdistributionsignificantlyaffectphysicalproperties,suchasmorphology,strength,meltflowetc.,andasaresult,thefinalpropertiesofproductsmadefromtheseresins.1.1Thistestmethodcoversthedeterminationofmolecularweightdistributionsandmolecularweightaveragesoflinearpolyolefinsbyhightemperaturegelpermeationchromatography(GPC).Thistestmethodusescommerciallyavailablepolystyrenestandardsandequipmentandisapplicabletopolyethylenes(excludinghighpressurelowdensitypolyethylene-LDPE)andpolypropylenessolublein1,2,4-trichlorobenzene(TCB)at140C.Thistestmethodisnotabsoluteandrequirescalibration.Note1Sizeexclusionchromatography(SEC)oftenisusedasanalternativenameforgelpermeationchromatography(GPC).Note2Specificmethodsandcapabilitiesofusersmayvarywithdifferencesincolumns,instrumentation,applicationssoftware,andpracticesbetweenlaboratories.Note3Onegeneralmethodisoutlinedherein;alternativeanalyticalpracticescanbefollowedandareattachedinnoteswhereappropriate.Note4ThereisnosimilarorequivalentISOstandard.1.2ThevaluesstatedinSIunits,basedonIEEE/ASTMS1-10,aretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:83_080_20
【页数】:6P.;A4
【正文语种】:
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