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SAE AMS3564 Vulcanized Fiber Sheet

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Product Code:SAE AMS3564
Title:Vulcanized Fiber Sheet
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers vulcanized fiber in the form of sheet. This sheet has been used typically for gaskets and reinforcements on packaging enclosures, but usage is not limited to such applications.
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【英文标准名称】:Rubberandplasticshoses-Assessmentofozoneresistanceunderdynamicconditions
【原文标准名称】:橡胶和塑料软管动态条件下耐臭氧性的评定
【标准号】:ISO10960-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC45
【标准类型】:()
【标准水平】:()
【中文主题词】:试验条件;塑料软管;橡胶软管;耐化学性;耐臭氧性;动力荷载;评定;测定;耐力
【英文主题词】:Assessment;Chemicalresistance;Corrosionresistance;Cracktests;Determination;Dynamicloading;Evaluations;Ozone;Ozoneresistance;Plastics;Plasticshose;Resistance;Rubberhoses;Rubbertechnology;Testing;Testingconditions
【摘要】:Specifiesamethodofassessingtheresistanceofhosestothedeleteriouseffectsofatmosphericozoneunderdynamicconditions.Applicabletohoseswithborediametersuptoandincluding25mm.
【中国标准分类号】:G42;G33
【国际标准分类号】:23_040_70
【页数】:3P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasurementofPneumaticPermeabilityofPartiallySaturatedPorousMaterialsbyFlowingAir
【原文标准名称】:用流动空气测定局部饱水孔隙材料气动渗透性的标准试验方法
【标准号】:ASTMD6539-2000(2006)e2
【标准状态】:现行
【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(US-ASTM)
【起草单位】:D18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airflow;flexiblewallpermeameter;permeability;permeameter;pneumaticpermeability;rigidwallpermeameter;Flowingairtest;Partially-saturatedporousmaterials;Pneumaticpermeability;Porousmedia/materials
【摘要】:Thistestmethodappliestotheone-dimensionallaminar(viscous)flowofairinporousmaterialssuchassoil.Note18212;Thistestmethoddealswithporousmaterialswithbothgaseous(air)andliquid(porewater)mobilefluids:Theliquidphaseismuchlesscompressible,hasahigherviscosity,andismuchmoretightlyboundtothesolidphasebychemicalforces.Theassumptionofsingle-phaseflowmaystillbepresumedtobevalidsincethetestgradientensuringtheconditionsoflaminarflowmaybelowenoughthatflowoftheliquidphaseisnegligible.Thedegreeofsaturationofthespecimenshallbelessthanthatwhichwouldproducesignificantinternaltransportofporewateroralterthecontinuityofairvoidsundertheappliedpneumaticgradients.Themaximumpermissibledegreeofsaturationmustbeevaluatedbyanexperiencedanalyst.Innoinstanceshallthespecimenbesosaturatedthatporewaterappearsattheexitofthepermeametercellduringthetest.Thistestmethodisbasedontheassumptionthattherateofmassflowthroughthespecimenisconstantwithtime.Note28212;Whenaspecimencontainsvolatilematerialsthisassumptionisviolated.Themassofgasflowingoutwillbegreaterthanthatflowingin,thepneumaticgradientisindeterminateandthetestmaybecomemeaningless.Suchspecimensposespecialproblemsandmustbedecontaminatedbeforeanalysisinordertominimizehealthandsafetyconcernsandtopreventcontaminationofthetestapparatus.Thepneumaticpermeabilityofporousmaterialsmaybestronglydependentonavarietyofphysicalpropertiesincludingthevoidratio,thedegreeofsaturation,percentanddirectionofcompaction,andsoforth.Itisbeyondthescopeofthistestmethodtoelaboratethesedependencies.Rather,thistestmethodisintendedtobeameasurementtechniquefordeterminingthepneumaticpermeabilityunderacertainsetoflaboratoryconditions.Itistheresponsibilityoftherequestortospecifywhichsoilparametersmustbecontrolledtoensureavalidextensionofthetestresultstofieldconditions.ItisassumedthatDarcy''sLawisvalid.ThevalidityofDarcy''slawmaybeevaluatedbyplottingthevolumetricflowthroughthespecimenagainstthedifferentialpressuredropacrossthespecimen.Iftheindividualtestpointsliewithin25%ofastraightlinepassingthroughtheorigin,thenDarcy''slawmaybetakenasvalid.Note38212;Darcy''slawisvalidonlywhensaturationdoesnotchangeovertime.Longmeasurementtimesassociatedwiththeuseofbubblemetersandmanometersmayindirectlybeanuncontrolledsourceofvariabilitywhenplottingflowversuspressuredrop(see8.2).Therecommendeduseofdigitalelectronicflowandpressuresensorsleadstoconsiderablyreducedmeasurementtimesbecausetheusercanquicklydeterminebyinspectionwhenasteadystateconditionhasbeenreached.Atthatpointonlyasinglereadingneedstobetakenforareliablemeasurement.Arapidcourseofmeasurementwillminimizedehydrationofpartiallysaturatedspecimens.Note48212;Humidifyingthetestgastominimizespecimendehydrationisnotrecommendedbecause:(1)thereisnopracticalwaytoeithermeasureorcontroltherelativehumidityofthetestgas,eitherattheinletoroutletofthespecimen;(2)thecalibrationoftheelectronicflowmeterisfordryaironlyandwouldbecomeunreliableinthepresenceofwatervapor,especiallyinviewofthepotentialforirreversibleadsorptionofmoistureonthesensorelements;(3)thereisadangerofpermanentwatercondensationinthestatictransfer..........
【中国标准分类号】:P13
【国际标准分类号】:13_080_20
【页数】:10P.;A4
【正文语种】:英语