ASTM E96/E96M-2005 材料的水蒸气渗透性标准试验方法
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【英文标准名称】:StandardTestMethodsforWaterVaporTransmissionofMaterials
【原文标准名称】:材料的水蒸气渗透性标准试验方法
【标准号】:ASTME96/E96M-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:C16.33
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:permeability;plastics(general);plasticsheetandfilm;sheetmaterial;thermal-insulatingmaterials;thermalinsulationpermeabilityfilms;watervaportransmission(WVT)
【摘要】:Thepurposeofthesetestsistoobtain,bymeansofsimpleapparatus,reliablevaluesofwatervaportransferthroughpermeableandsemipermeablematerials,expressedinsuitableunits.Thesevaluesareforuseindesign,manufacture,andmarketing.Apermeancevalueobtainedunderonesetoftestconditionsmaynotindicatethevalueunderadifferentsetofconditions.Forthisreason,thetestconditionsshouldbeselectedthatmostcloselyapproachtheconditionsofuse.Whileanysetofconditionsmaybeusedandthoseconditionsreported,standardconditionsthathavebeenusefulareshowninAppendixX1.1.1Thesetestmethodscoverthedeterminationofwatervaportransmission(WVT)ofmaterialsthroughwhichthepassageofwatervapormaybeofimportance,suchaspaper,plasticfilms,othersheetmaterials,fiberboards,gypsumandplasterproducts,woodproducts,andplastics.Thetestmethodsarelimitedtospecimensnotover11/4in.(32mm)inthicknessexceptasprovidedinSection.Twobasicmethods,theDesiccantMethodandtheWaterMethod,areprovidedforthemeasurementofpermeance,andtwovariationsincludeserviceconditionswithonesidewettedandserviceconditionswithlowhumidityononesideandhighhumidityontheother.Agreementshouldnotbeexpectedbetweenresultsobtainedbydifferentmethods.Themethodshouldbeselectedthatmorenearlyapproachestheconditionsofuse.1.2Thevaluesstatedininch-poundunitsaretoberegardedseparatelyasthestandard.Withinthetext,theSIunitsareshowninparentheses.Thevaluesstatedineachsystemarenotexactequivalents;thereforeeachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromtwosystemswillresultinnon-conformancewiththestandard.Howeverderivedresultscanbeconvertedfromonesystemtootherusingappropriateconversionfactors(seeTable1).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H10
【国际标准分类号】:77_040_99
【页数】:11P.;A4
【正文语种】:英语
【原文标准名称】:材料的水蒸气渗透性标准试验方法
【标准号】:ASTME96/E96M-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:C16.33
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:permeability;plastics(general);plasticsheetandfilm;sheetmaterial;thermal-insulatingmaterials;thermalinsulationpermeabilityfilms;watervaportransmission(WVT)
【摘要】:Thepurposeofthesetestsistoobtain,bymeansofsimpleapparatus,reliablevaluesofwatervaportransferthroughpermeableandsemipermeablematerials,expressedinsuitableunits.Thesevaluesareforuseindesign,manufacture,andmarketing.Apermeancevalueobtainedunderonesetoftestconditionsmaynotindicatethevalueunderadifferentsetofconditions.Forthisreason,thetestconditionsshouldbeselectedthatmostcloselyapproachtheconditionsofuse.Whileanysetofconditionsmaybeusedandthoseconditionsreported,standardconditionsthathavebeenusefulareshowninAppendixX1.1.1Thesetestmethodscoverthedeterminationofwatervaportransmission(WVT)ofmaterialsthroughwhichthepassageofwatervapormaybeofimportance,suchaspaper,plasticfilms,othersheetmaterials,fiberboards,gypsumandplasterproducts,woodproducts,andplastics.Thetestmethodsarelimitedtospecimensnotover11/4in.(32mm)inthicknessexceptasprovidedinSection.Twobasicmethods,theDesiccantMethodandtheWaterMethod,areprovidedforthemeasurementofpermeance,andtwovariationsincludeserviceconditionswithonesidewettedandserviceconditionswithlowhumidityononesideandhighhumidityontheother.Agreementshouldnotbeexpectedbetweenresultsobtainedbydifferentmethods.Themethodshouldbeselectedthatmorenearlyapproachestheconditionsofuse.1.2Thevaluesstatedininch-poundunitsaretoberegardedseparatelyasthestandard.Withinthetext,theSIunitsareshowninparentheses.Thevaluesstatedineachsystemarenotexactequivalents;thereforeeachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromtwosystemswillresultinnon-conformancewiththestandard.Howeverderivedresultscanbeconvertedfromonesystemtootherusingappropriateconversionfactors(seeTable1).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H10
【国际标准分类号】:77_040_99
【页数】:11P.;A4
【正文语种】:英语
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