ASTM D3516-1989(2006) 灰化纤维素的标准试验方法

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【英文标准名称】:StandardTestMethodsforAshingCellulose
【原文标准名称】:灰化纤维素的标准试验方法
【标准号】:ASTMD3516-1989(2006)
【标准状态】:现行
【国别】:
【发布日期】:1989
【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】:D01.36
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:纤维素;灰分;工艺
【英文主题词】:bleached;Schonigeroxidation;sulfatedash;wetashing
【摘要】:Ashcontentgivesanestimationoftheinorganiccontentofcellulosesamples.Thepresenceofhighlevelsofashcanbeexpectedtobedetrimentaltotheprocessofmakingcellulosederivatives.Italsoprovidesaroughestimateofsilicacontentwhichcanhaveasignificanteffectontheperformanceoffiltersincellulosederivativemanufacturingfacilities.1.1Thesetestmethodscoverfourashingmethodsforcellulose.Theseareintendedforuseonunbleachedandbleachedcelluloseinsheetedorbulkfiberform.Eachoneofthetestmethodshasadvantages,sothatpreferenceapplicationsexistforallfour.1.2Thetestmethodsappearasfollows:SectionsTestMethodA-AshinCelluloseat575oC6to11TestMethodB-SulfatedAshinCelluloseat575oC12to17TestMethodC-AshingCellulosebySchonigerOxidation18to22TestMethodD-WetAshingofCelluloseforInorganics23to29