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【英文标准名称】:StandardTestMethodforMeasurementofPropertiesofThermoplasticMaterialsbyScrew-ExtrusionCapillaryRheometer
【原文标准名称】:用螺杆挤压毛细管流变仪测量热塑性塑料性能的标准试验方法
【标准号】:ASTMD5422-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:D20.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料
【英文主题词】:capillaryrheometer;flowproperties;materialproperties;molecularproperties;rheologicalproperties;rheology;screwextrusion
【摘要】:Thistestmethodisusefulforthecharacterizationofthermoplasticsandthermoplasticcompounds,intermsofviscosity,orresistancetoflow.Thedataproducedbythistestmethodhasbeenfoundusefulinbothquality-controltestingandcompounddevelopment.However,directcorrelationwithfactoryconditionsisnotimplied.Flow-performancedatapermitsqualitycontrolofincomingthermoplasticsandthermoplasticcompoundsbecausetheflowparametersaresensitivetomolecularweightandmolecular-weightdistribution.Therefore,thistestmethodmaydistinguishdifferencesbetweenlots.Theshearviscosityorflowviscosityofthermoplasticsandthermoplasticcompoundswillnotonlybesensitivetotheraw-polymermolecularproperties,butwillalsobeaffectedbythetypeandamountoffiller,additive,plasticizer,orstabilizer,bythetypeofcopolymerblend,andbytheadditionofothercompoundingmaterials.Thistestmethodcanserveasaquality-controltoolforeitherincomingmaterialsorforin-housequality-assurancechecksonproductionmixing.Thistestmethodisusefultotheresearchanddevelopmentofnewproductsinthattherheologicalbehaviorofayetuncharacterizedthermoplasticorthermoplasticcompoundcanbemeasuredandconsideredforcomparativeanalysis.1.1Thistestmethodcoverstheuseofascrew-extrusion-typecapillaryrheometerforthemeasurementofflowpropertiesofthermoplasticsandthermoplasticcompounds.Themeasuredflowproperties,whichareobtainedthroughlaboratoryinvestigation,mayhelptodescribethematerialbehaviorthatoccursinfactoryprocessing.1.2Sinceascrew-typecapillaryrheometerimpartsshearenergytothematerialduringtesting,themeasurementswillusuallydifferfromthoseobtainedwithapiston-typecapillaryrheometer(seeTestMethodD3835).1.3CapillaryrheometermeasurementsforthermoplasticsandthermoplasticcompoundsaredescribedinTestMethodD3835.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1--ThereiscurrentlynoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:7P.;A4
【正文语种】: