ASTM C 583-2000 在高温下耐火材料的挠折模量的标准试验方法
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来源:标准资料网
【英文标准名称】:StandardTestMethodforModulusofRuptureofRefractoryMaterialsatElevatedTemperatures
【原文标准名称】:在高温下耐火材料的挠折模量的标准试验方法
【标准号】:ASTMC583-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;耐火材料;极限特性
【英文主题词】:refractorymaterials;testing;ultimatebehaviour
【摘要】:
【中国标准分类号】:Q40
【国际标准分类号】:81_080
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:Plastics-Determinationofwaterabsorption
【原文标准名称】:塑料吸水性的测定
【标准号】:ISO62-1999
【标准状态】:作废
【国别】:国际
【发布日期】:1999-02
【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】:试验;吸水率;试验;塑料
【英文主题词】:Absorption;Absorptivity;Determination;Determinationprocedures;Humidity;Moisture;Plastics;Quantityofwater;Testpieces;Testing;Tests;Water;Waterabsorption
【摘要】:1.1ThisInternationalStandarddescribesaprocedurefordeterminingthemoistureabsorptionpropertiesinthe"through-the-thickness"directionofflatorcurved-formsolidplastics.ThisInternationalStandardalsodescribesproceduresfordeterminingtheamountofwaterabsorbedbyplasticspecimensofdefineddimensions,whenimmersedinwaterorwhensubjectedtohumidairundercontrolledconditions.The"through-the-thickness"moisturediffusioncoefficientcanbedeterminedforsingle-phasematerialbyassumingFickiandiffusionbehaviourwithconstantmoistureabsorptionpropertiesthroughthethicknessofthetestspecimen.Thismodelisvalidforhomogeneousmaterialsandforreinforcedpolymer-matrixcompositestestedbelowtheirglasstransitiontemperature.However,sometwo-phasematricessuchashardenedepoxiesmayrequireamulti-phaseabsorptionmodelwhichisnotcoveredbythisInternationalStandard.1.2Ideallythebestcomparisonofthewaterabsorptionpropertiesand/ordiffusioncoefficientsofmaterialsshouldbecarriedoutonlyusingtheequilibriummoisturecontentofplasticsexposedtoidenticalconditions.Thecomparisonofmaterialsusingpropertiesatmoistureequilibriumdoesnotassume,andisthereforenotlimitedto,single-phaseFickiandiffusionbehaviour.1.3Alternatively,waterabsorptionofplasticspecimensofdefineddimensionsexpqsedtoimmersionorhumidityundercontrolledconditionsbutforanarbitrarytimeperiodcanbeusedtocomparedifferentbatchesofthesamematerialorforqualitycontroltestsofagivenmaterial.Forthistypeofcomparison,itisessentialthatalltestspecimensbeofidenticaldimensionsand,asnearlyaspossible,havethesamephysicalattributes,e.g.surfacesmoothness,internalstresses,etc.However,moistureequilibriumisnotreachedundertheseconditions.Therefore,resultsfromthistypeoftestcannotbeusedtocomparethewaterabsorptionpropertiesofdifferenttypesofplastics.Forthemorereliableresults,simultaneoustestsarerecommended.1.4TheresultsobtainedusingthemethodsdescribedinthisInternationalStandardareapplicabletomostplasticsbutarenotapplicabletocellularplastics,granulates,orpowderswhichcanshowadditionalabsorptionandcapillaryeffects.Plasticsexposedtomoistureundercontrolledconditionsfordefinedperiodsoftimeproviderelativecomparisonsbetweenthem.Thetestsdescribedfordeterminationofdiffusioncoefficientmaynotbeapplicabletoallplastics.Plasticsthatcannotretaintheirshapewhenimmersedinboilingwatershouldnotbecomparedusingmethod2in6.3.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:11P;A4
【正文语种】:英语
【英文标准名称】:Photovoltaic(PV)systems-Characteristicsoftheutilityinterface(IEC61727:1995);GermanversionEN61727:1995
【原文标准名称】:光电器件(PV)系统.网络接的特性
【标准号】:EN61727-1995
【标准状态】:现行
【国别】:
【发布日期】:1996-12
【实施或试行日期】:1996-12-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:网络接口;保护设备;定义;电气工程;光电器件;人体保护;太阳能;特性;接口(数据加工)
【英文主题词】:Definition;Definitions;Electricmains;Electricalengineering;Interfaces(dataprocessing);Mainssupply;Networkinterfaces;Photovoltaics;Properties;Protectiondevices;Protectionofpersons;Solarenergy;Solarpower
【摘要】:
【中国标准分类号】:L50
【国际标准分类号】:27_160
【页数】:11P.;A4
【正文语种】:英语
