BS ISO 6721-10-2001 塑料.动态机械性能的测定.使用平板振荡流变仪测定复合剪切粘度
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【英文标准名称】:Plastics-Determinationofdynamicmechanicalproperties-Complexshearviscosityusingaparallel-plateoscillatoryrheometer
【原文标准名称】:塑料.动态机械性能的测定.使用平板振荡流变仪测定复合剪切粘度
【标准号】:BSISO6721-10-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-10-01
【实施或试行日期】:2001-10-01
【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】:高聚物;振荡器;角(几何学);动力粘度;机械试验;材料的机械性能;动态试验;剪应力;流变性能;粘度测量;频率;复杂;粘度;塑料;刚度;剪应变;应变;塑料和橡胶技术
【英文主题词】:Definition;Definitions;Determination;Dynamictesting;Mechanicalproperties;Oscillators;Plastics;Polymermelt;Polymers;Rheometry;Shearmodulus;Testing;Viscositymeasurement
【摘要】:ThispartofISO6721specifiesthegeneralprinciplesofamethodfordeterminingthedynamicrheologicalpropertiesofpolymermeltsatangularfrequenciestypicallyintherange0,01rad·sto100rad·sbymeansofanoscillatoryrheometerwithaparallel-plategeometry.Angularfrequenciesoutsidethisrangecanalsobeused(seenote1).Themethodisusedtodeterminevaluesofthefollowingdynamicrheologicalproperties:complexshearviscosityη,dynamicshearviscosityη',theout-of-phasecomponentofthecomplexshearviscosityη",complexshearmodulusG,shearlossmodulusG"andshearstoragemodulusG'.Itissuitableformeasuringcomplexshearviscosityvaluestypicallyuptoapproximately10MPa·s(seenote2).NOTE1Theangular-frequencymeasurementrangeislimitedbythespecificationofthemeasuringinstrumentandalsobytheresponseofthespecimen.Whentestingusingangularfrequencieslowerthan0,1rad·sthetesttimecanincreasesignificantlyasthetimetakentoobtainasinglemeasurementisproportionaltothereciprocaloftheangularfrequency.Consequently,whentestingatlowangularfrequenciesdegradationorpolymerizationofthespecimenismorelikelytooccurandhaveaneffectontheresults.Athighangularfrequenciesthespecimenmaydistortorfractureattheedge,consequentlyinvalidatingthetestresults.NOTE2Therangeofcomplexshearviscosityvaluesthatcanbemeasuredisdependentonthespecimendimensionsandalsothespecificationofthemeasuringinstrument.Foraspecimenofgivendimensions,theupperlimitoftherangeislimitedbythemachine'storquecapacity,angular-displacementresolutionandcompliance.However,correctioncanbemadeforcomplianceeffects.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:22P;A4
【正文语种】:英语
【原文标准名称】:塑料.动态机械性能的测定.使用平板振荡流变仪测定复合剪切粘度
【标准号】:BSISO6721-10-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-10-01
【实施或试行日期】:2001-10-01
【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】:高聚物;振荡器;角(几何学);动力粘度;机械试验;材料的机械性能;动态试验;剪应力;流变性能;粘度测量;频率;复杂;粘度;塑料;刚度;剪应变;应变;塑料和橡胶技术
【英文主题词】:Definition;Definitions;Determination;Dynamictesting;Mechanicalproperties;Oscillators;Plastics;Polymermelt;Polymers;Rheometry;Shearmodulus;Testing;Viscositymeasurement
【摘要】:ThispartofISO6721specifiesthegeneralprinciplesofamethodfordeterminingthedynamicrheologicalpropertiesofpolymermeltsatangularfrequenciestypicallyintherange0,01rad·sto100rad·sbymeansofanoscillatoryrheometerwithaparallel-plategeometry.Angularfrequenciesoutsidethisrangecanalsobeused(seenote1).Themethodisusedtodeterminevaluesofthefollowingdynamicrheologicalproperties:complexshearviscosityη,dynamicshearviscosityη',theout-of-phasecomponentofthecomplexshearviscosityη",complexshearmodulusG,shearlossmodulusG"andshearstoragemodulusG'.Itissuitableformeasuringcomplexshearviscosityvaluestypicallyuptoapproximately10MPa·s(seenote2).NOTE1Theangular-frequencymeasurementrangeislimitedbythespecificationofthemeasuringinstrumentandalsobytheresponseofthespecimen.Whentestingusingangularfrequencieslowerthan0,1rad·sthetesttimecanincreasesignificantlyasthetimetakentoobtainasinglemeasurementisproportionaltothereciprocaloftheangularfrequency.Consequently,whentestingatlowangularfrequenciesdegradationorpolymerizationofthespecimenismorelikelytooccurandhaveaneffectontheresults.Athighangularfrequenciesthespecimenmaydistortorfractureattheedge,consequentlyinvalidatingthetestresults.NOTE2Therangeofcomplexshearviscosityvaluesthatcanbemeasuredisdependentonthespecimendimensionsandalsothespecificationofthemeasuringinstrument.Foraspecimenofgivendimensions,theupperlimitoftherangeislimitedbythemachine'storquecapacity,angular-displacementresolutionandcompliance.However,correctioncanbemadeforcomplianceeffects.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:22P;A4
【正文语种】:英语
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