ASTM D696-2003 用玻璃硅膨胀计测定塑料在-30℃和30℃之间的线性热膨胀的标准试验方法
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【英文标准名称】:StandardTestMethodforCoefficientofLinearThermalExpansionofPlasticsBetween-30&176Cand30&176CWithaVitreousSilicaDilatometer
【原文标准名称】:用玻璃硅膨胀计测定塑料在-30℃和30℃之间的线性热膨胀的标准试验方法
【标准号】:ASTMD696-2003
【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(ASTM)
【起草单位】:D20.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:热膨胀系数;热膨胀;塑料;试验
【英文主题词】:coefficientofexpansion;linearexpansion;plastics;thermalexpansion;
【摘要】:1.1Thistestmethodcoversdeterminationofthecoefficientoflinearthermalexpansionforplasticmaterialshavingcoefficientsofexpansiongreaterthan1x1061176;Cbyuseofavitreoussilicadilatometer.Atthetesttemperaturesandunderthestressesimposed,theplasticmaterialsshallhaveanegligiblecreeporelasticstrainrateorboth,insofarasthesepropertieswouldsignificantlyaffecttheaccuracyofthemeasurements.Note18212;ThereisnosimilarorequivalentISOstandard.1.1.1TestMethodE228shallbeusedfortemperaturesotherthan30176;Cto30176;C.1.1.2Thistestmethodshallnotbeusedformeasurementsonmaterialshavingaverylowcoefficientofexpansion(lessthan1x1061176;C).Formaterialshavingverylowcoefficientofexpansion,interferometerorcapacitancetechniquesarerecommended.1.2Thethermalexpansionofaplasticiscomposedofareversiblecomponentonwhicharesuperimposedchangesinlengthduetochangesinmoisturecontent,curing,lossofplasticizerorsolvents,releaseofstresses,phasechangesandotherfactors.Thistestmethodisintendedfordeterminingthecoefficientoflinearthermalexpansionundertheexclusionofthesefactorsasfaraspossible.Ingeneral,itwillnotbepossibletoexcludetheeffectofthesefactorscompletely.Forthisreason,thetestmethodcanbeexpectedtogiveonlyanapproximationtothetruethermalexpansion.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:5P.;A4
【正文语种】:
【原文标准名称】:用玻璃硅膨胀计测定塑料在-30℃和30℃之间的线性热膨胀的标准试验方法
【标准号】:ASTMD696-2003
【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(ASTM)
【起草单位】:D20.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:热膨胀系数;热膨胀;塑料;试验
【英文主题词】:coefficientofexpansion;linearexpansion;plastics;thermalexpansion;
【摘要】:1.1Thistestmethodcoversdeterminationofthecoefficientoflinearthermalexpansionforplasticmaterialshavingcoefficientsofexpansiongreaterthan1x1061176;Cbyuseofavitreoussilicadilatometer.Atthetesttemperaturesandunderthestressesimposed,theplasticmaterialsshallhaveanegligiblecreeporelasticstrainrateorboth,insofarasthesepropertieswouldsignificantlyaffecttheaccuracyofthemeasurements.Note18212;ThereisnosimilarorequivalentISOstandard.1.1.1TestMethodE228shallbeusedfortemperaturesotherthan30176;Cto30176;C.1.1.2Thistestmethodshallnotbeusedformeasurementsonmaterialshavingaverylowcoefficientofexpansion(lessthan1x1061176;C).Formaterialshavingverylowcoefficientofexpansion,interferometerorcapacitancetechniquesarerecommended.1.2Thethermalexpansionofaplasticiscomposedofareversiblecomponentonwhicharesuperimposedchangesinlengthduetochangesinmoisturecontent,curing,lossofplasticizerorsolvents,releaseofstresses,phasechangesandotherfactors.Thistestmethodisintendedfordeterminingthecoefficientoflinearthermalexpansionundertheexclusionofthesefactorsasfaraspossible.Ingeneral,itwillnotbepossibletoexcludetheeffectofthesefactorscompletely.Forthisreason,thetestmethodcanbeexpectedtogiveonlyanapproximationtothetruethermalexpansion.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:5P.;A4
【正文语种】:
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