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【英文标准名称】:Plastics-Determinationofthetransientextensionalviscosityofpolymermelts
【原文标准名称】:塑料.聚合物熔体瞬态拉伸粘度的测定
【标准号】:ISO20965-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-02
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:聚合物熔体;定义;试验;粘度;高聚物;塑料;粘度测量;测量技术;粘度值
【英文主题词】:Definition;Definitions;Measuringtechniques;Plastics;Polymermelt;Polymers;Testing;Viscosity;Viscositymeasurement;Viscositynumbers
【摘要】:ThisInternationalStandardspecifiesthegeneralprinciplesofamethodfordeterminingthetransientextensionalviscosityofpolymermelts.Theproceduredetailsthemeasurementofpolymermeltspecimensstretcheduniaxiallyunderconditionsofconstantstrainrateandconstanttemperature.ThemethodiscapableofmeasuringthetransientextensionalviscosityofpolymermeltsatHenckystrainratestypicallyintherange0,01sto1s,atHenckystrainsuptoapproximately4andattemperaturesuptoapproximately250℃(seeNotes1and2).Itissuitableformeasuringtransientextensionalviscosityvaluestypicallyintherangefromapproximately10Pasto10Pa·s(seeNote3).NOTE1Henckystrainsandstrainratesareused(seeClause3).NOTE2Valuesofstrain,strainrateandtemperatureoutsidetheselimitingvaluesmaybeattained.NOTE3Theoperatinglimitofaninstrument,intermsofthelowesttransientextensionalviscosityvaluesthatcanbemeasured,isduetoacombinationoffactors,includingtheabilityofthespecimentomaintainitsshapeduringtestingandtheresolutionoftheinstrument.AlistofdocumentsrelatedtothisInternationalStandardisgivenintheBibliography.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:18P;A4
【正文语种】:英语