BS ISO 5351-2004 纸浆.铜乙二氨(CED)溶液中特性粘度值的测定

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【英文标准名称】:Pulps-Determinationoflimitingviscositynumberincupri-ethylenediamine(CED)solution
【原文标准名称】:纸浆.铜乙二氨(CED)溶液中特性粘度值的测定
【标准号】:BSISO5351-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2007-03-30
【实施或试行日期】:2007-03-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:校正;纤维素;含铜的;定义;测定;稀释;乙二氨;实验室器皿;特性粘度;数学计算;纸浆;溶液;测试;试验;粘度计;粘度
【英文主题词】:Calibration;Cellulose;Copper-bearing;Definitions;Determination;Dilute;Ethylenediamine;Laboratoryware;Limitviscosity;Mathematicalcalculations;Pulp;Solutions;Testing;Tests;Viscometers;Viscosity
【摘要】:ThisInternationalStandardspecifiesamethodwhichyieldsanumberthatisanestimateofthelimitingviscositynumberofpulpinadilutecupri-ethylenediamine(CED)solution.ThismethodisprimarilyapplicabletoCED-solublesamplesofbleachedchemicalpulpsbutcanalsobeappliedtoanykindofpulpthatdissolvescompletelyinCEDsolution.NOTE1Theresultscanbeusedtoestimatetheextentofcellulosedegradationcausedbycookingorbleaching.Resultsobtainedwithsamplescontainingappreciableamountsofsubstancesotherthancellulosemustbeinterpretedwithcaution,however.NOTE2Inthestrictestsense,viscositymeasurementproceduresareapplicableonlytothepolysaccharidefractionofthesample.Thisnotwithstanding,viscositymeasurementcanusuallybeusedtoobtainaresultonunbleachedpulpshavinglignincontentsofupto4%,becausemostofthesepulpscanbesuccessfullydissolvedinCED.However,thesimplefactthatanunbleachedpulpcanbedissolvedinCEDdoesnotmeantheresultsarevalid.Insummary,viscosityresultsforpulpscontainingmorethan0,5%ofligninarenotacceptablefortechnicalspecificationpurposes.
【中国标准分类号】:Y31
【国际标准分类号】:85_040
【页数】:26P.;A4
【正文语种】:英语