BS ISO 11443-2005 塑料.用毛细管和狭缝流变仪测定塑料的流动性

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【英文标准名称】:Plastics-Determinationofthefluidityofplasticsusingcapillaryandslit-dierheometers
【原文标准名称】:塑料.用毛细管和狭缝流变仪测定塑料的流动性
【标准号】:BSISO11443-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-03-23
【实施或试行日期】:2005-03-23
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;试验设备;定义;毛细管流变仪;流变测定法;流变性能;流动性;热塑性聚合物;塑料;人造树脂
【英文主题词】:Artificialresins;Capillaryrheometry;Definition;Definitions;Determination;Fluidity;Plastics;Rheologicalproperties;Rheometry;Testequipment;Thermoplasticpolymers
【摘要】:ThisInternationalStandardspecifiesmethodsfordeterminingthefluidityofplasticsmeltssubjectedtoshearstressesatratesandtemperaturesapproximatingtothosearisinginplasticsprocessing.Testingplasticsmeltsinaccordancewiththesemethodsisnecessarysincethefluidityofplasticsmeltsisgenerallynotdependentsolelyontemperature,butalsoonotherparameters,inparticularshearrateandshearstress.ThemethodsdescribedinthisInternationalStandardareusefulfordeterminingmeltviscositiesfrom10Pa·sto10Pa·s,dependingonthemeasurementrangeofthepressureand/orforcetransducerandthemechanicalandphysicalcharacteristicsoftherheometer.Theshearratesoccurringinextrusionrheometersrangefrom1sto10s.Elongationaleffectsatthedieentrancecauseextrudateswellingatthedieexit.Methodsforassessingextrudateswellinghavealsobeenincluded.TheTheologicaltechniquesdescribedarenotlimitedtothecharacterizationofwall-adheringthermoplasticsmeltsonly:forexample,thermoplasticsexhibiting"slip"effectsandthermosettingplasticscanbeincluded.However,themethodsusedfordeterminingtheshearrateandshearviscosityareinvalidformaterialswhicharenotwall-adhering.Nevertheless,thestandardcanbeusedtocharacterizetheTheologicalbehaviourofsuchfluidsforagivengeometry.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:42P;A4
【正文语种】:英语