BS ISO 15512-1999 塑料.水含量的测定
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【英文标准名称】:Plastics-Determinationofwatercontent
【原文标准名称】:塑料.水含量的测定
【标准号】:BSISO15512-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-10-15
【实施或试行日期】:1999-10-15
【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】:测压法;卡耳费瑟方法;含量测定;物理试验;水;试验设备;测定;含水量;试验;塑料
【英文主题词】:water;watercontent;testing;karlfischermethod;manometricmethod;physicaltesting;plastics;determinationofcontent;determination;testequipment
【摘要】:ThisInternationalStandardspecifiesmethodsforthedeterminationofthewatercontentofplasticsintheformofgranulesandfinishedarticles.Thesemethodsdonottestforwaterabsorption(kineticsandequilibrium)ofplasticsasmeasuredbyISO62.Themethodsaresuitableforthedeterminationofwatercontentaslowasthefollowinglevels:—MethodA0,1%orbetter;—MethodB0,01%orbetter;—MethodC0,01%orbetter.Watercontentisanimportantparameterforprocessingmaterials,andshouldremainbelowthelevelspecifiedintheappropriatematerialstandard.ThreealternativemethodsarespecifiedinthisInternationalStandard.a)MethodAisanextractionmethodusinganhydrousmethanolfollowedbyaKarl-Fischertitrationoftheextractedwater.Itcanbeusedforallplasticsandisapplicabletogranuleshavingamaximumsizeof4mm×4mm×3mm.b)MethodBisavaporizationmethodusingheated,dryairornitrogengastoevaporatethewater,followedbyaKarl-Fischertitrationofthecollectedwater.Itcanbeusedforallplasticsandisapplicabletogranulessmallerthan4mm×4mm×3mm.c)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】:20P.;A4
【正文语种】:英语
【原文标准名称】:塑料.水含量的测定
【标准号】:BSISO15512-1999
【标准状态】:作废
【国别】:英国
【发布日期】:1999-10-15
【实施或试行日期】:1999-10-15
【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】:测压法;卡耳费瑟方法;含量测定;物理试验;水;试验设备;测定;含水量;试验;塑料
【英文主题词】:water;watercontent;testing;karlfischermethod;manometricmethod;physicaltesting;plastics;determinationofcontent;determination;testequipment
【摘要】:ThisInternationalStandardspecifiesmethodsforthedeterminationofthewatercontentofplasticsintheformofgranulesandfinishedarticles.Thesemethodsdonottestforwaterabsorption(kineticsandequilibrium)ofplasticsasmeasuredbyISO62.Themethodsaresuitableforthedeterminationofwatercontentaslowasthefollowinglevels:—MethodA0,1%orbetter;—MethodB0,01%orbetter;—MethodC0,01%orbetter.Watercontentisanimportantparameterforprocessingmaterials,andshouldremainbelowthelevelspecifiedintheappropriatematerialstandard.ThreealternativemethodsarespecifiedinthisInternationalStandard.a)MethodAisanextractionmethodusinganhydrousmethanolfollowedbyaKarl-Fischertitrationoftheextractedwater.Itcanbeusedforallplasticsandisapplicabletogranuleshavingamaximumsizeof4mm×4mm×3mm.b)MethodBisavaporizationmethodusingheated,dryairornitrogengastoevaporatethewater,followedbyaKarl-Fischertitrationofthecollectedwater.Itcanbeusedforallplasticsandisapplicabletogranulessmallerthan4mm×4mm×3mm.c)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】:20P.;A4
【正文语种】:英语
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