【英文标准名称】:Plastics-Determinationofwatercontent(ISO15512:2008);EnglishversionofDINENISO15512:2009-10
【原文标准名称】:塑料.水含量的测定(ISO15512:2008),DINENISO15512:2009-10的英文版本
【标准号】:DINENISO15512-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Determination;Determinationofcontent;Evaporation;Extraction;Extractionmethodsofanalysis;Granulates;KarlFischermethod;Manometric;Manometricmethod;Manometry;Physicaltesting;Plastics;Plasticsproducts;Testequipment;Testing;Vaporization;Water;Watercontent
【摘要】:1.1ThisInternationalStandardspecifiesmethodsforthedeterminationofthewatercontentofplasticsintheformofgranulesandfinishedarticles.Thesemethodsdonottestforwaterabsorption(kineticsandequilibrium)ofplasticsasmeasuredbyISO62.Themethodsaresuitableforthedeterminationofwatercontentaslowasthefollowinglevels:--MethodA0,1%orbetter;MethodB0,01%orbetter;MethodC0,01%orbetter.Watercontentisanimportantparameterforprocessingmaterials,andshouldremainbelowthelevelspecifiedintheappropriatematerialstandard.1.2ThreealternativemethodsarespecifiedinthisInternationalStandard:MethodAisanextractionmethodusinganhydrousmethanolfollowedbyaKarlFischertitrationoftheextractedwater.Itcanbeusedforallplasticsandisapplicabletogranuleshavingamaximumsizeof4mm×4mm×3mm.MethodBisavaporizationmethodusingheated,dryairornitrogengastoevaporatethewater,followedbyaKarlFischertitrationofthecollectedwater.Itcanbeusedforallplasticsandisapplicabletogranulessmallerthan4mm×4mm×3mm.MethodCisamanometricmethod.Thewatercontentisdeterminedfromtheincreaseinpressurewhichresultswhenthewaterisevaporatedunderavacuum.Thismethodisnotapplicabletoplasticsamplescontainingvolatilecompounds,otherthanwater,inamountscontributingsignificantlytothevapourpressureatroomtemperature.Checksforthepresenceoflargeamountsofvolatilecompoundsshouldbecarriedoutperiodically,forexamplebygaschromatography.Suchchecksareparticularlyrequiredfornewtypesorgradesofmaterial.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:WoodPoles-SpecificationsandDimensions
【原文标准名称】:木杆.规范和尺寸
【标准号】:ANSIO5.1-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;木制品;木杆
【英文主题词】:Dimensions;Woodproducts;Woodenpoles
【摘要】:Thisstandardprovidesminimumspecificationsforqualityanddimensionsofwoodpolesthataretobeusedinsingle-poleutilitystructures.
【中国标准分类号】:Q71
【国际标准分类号】:29_240_20;79_080
【页数】:
【正文语种】:英语