ISO 2555-1989 塑料.液态或象乳胶或分散体一样的树脂.用布洛克菲文德法测定表面粘度
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【英文标准名称】:Plastics;resinsintheliquidstateorasemulsionsordispersions;determinationofapparentviscositybytheBrookfieldmethod
【原文标准名称】:塑料.液态或象乳胶或分散体一样的树脂.用布洛克菲文德法测定表面粘度
【标准号】:ISO2555-1989
【标准状态】:现行
【国别】:国际
【发布日期】:1989-02
【实施或试行日期】:1989-02-01
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:粘度计;粘度测量;粘度;树脂;塑料
【英文主题词】:Brookfield;Dispersion;Emulsions;Instruments;Liquid;Plastics;Resins;Rotationalspeeds;Spindles;Testresults;Testing;Viscometers;Viscosity;Viscositymeasurement
【摘要】:Specificationofamethodfordetermininganapparentviscosityofresinsinaliquidstate,usingoneofthetypesofrotationalviskosimeterdescribedinthisstandard.Aspindleordiscisdrivenatconstantrotationalfrequencyintheproductbeingstudied.Theresistanceexertedbythefluidonthespindle,whichdependsontheviscosityoftheproduct,causeatorque,whichisindicatedbyasuitablemeter.TheapplicationofthismethodtospecificproductsisdetailedinannexA.TheviscosimeterstypesA,BandCpermitvisscositymeasurementsfrom0,02Pa.sto60000Pa.s.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:7P;A4
【正文语种】:英语
【英文标准名称】:Determinationoftheultimateaerobicbiodegradabilityofplasticmaterialsinanaqueousmedium-Methodbymeasuringtheoxygendemandinaclosedrespirometer
【原文标准名称】:水介质中塑料材料富氧菌生物降解性的测定在一封闭呼吸器中测定需氧量的方法
【标准号】:ISO14851-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-05
【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/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:塑料;测定;定义;需氧量;试验;微生物;生物降解能力;有机化合物;好气菌;质量
【英文主题词】:Aerobicbacteria;Biodegradability;Definitions;Determination;Measurement;Microorganisms;Organiccompounds;Oxygendemand;Plastics;Quality;Respirometers;Testing
【摘要】:ThisInternationalStandardspecifiesamethod,bymeasuringtheoxygendemandinaclosedrespirometer,forthedeterminationofthedegreeofaerobicbiodegradabilityofplasticmaterials,includingthosecontainingformulationadditives.Thetestmaterialisexposedinanaqueousmediumunderlaboratoryconditionstoaninoculumfromactivatedsludge,compostorsoil.Ifanunadaptedactivatedsludgeisusedastheinoculum,thetestsimulatesthebiodegradationprocesseswhichoccurinanaturalaqueousenvironment;ifamixedorpre-exposedinoculumisused,themethodcanbeusedtoinvestigatethepotentialbiodegradabilityofatestmaterial.TheconditionsusedinthisInternationalStandarddonotnecessarilycorrespondtotheoptimumconditionsallowingmaximumbiodegradationtooccur,butthestandardisdesignedtodeterminethepotentialbiodegradabilityofplasticmaterialsorgiveanindicationoftheirbiodegradabilityinnaturalenvironments.Themethodenablestheassessmentofthebiodegradabilitytobeimprovedbycalculatingacarbonbalance(optional,seeannexE).Themethodappliestothefollowingmaterials:—Naturaland/orsyntheticpolymers,copolymersormixturesthereof.—Plasticmaterialswhichcontainadditivessuchasplasticizers,colorantsorothercompounds.—Water-solublepolymers.—Materialswhich,underthetestconditions,donotinhibitthemicroorganismspresentintheinoculum.Inhibitoryeffectscanbedeterminedusinganinhibitioncontrolorbyanotherappropriatemethod(seee.g.ISO8192).Ifthetestmaterialisinhibitorytotheinoculum,alowertestconcentration,anotherinoculumorapre-exposedinoculumcanbeused.
【中国标准分类号】:Z04
【国际标准分类号】:83_080_01
【页数】:22P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforAtmosphericLeaksUsingaThermalConductivityLeakDetector
【原文标准名称】:用导热泄漏探测器测定大气泄漏的标准试验方法
【标准号】:ASTME2024-2005
【标准状态】:现行
【国别】:
【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】:E07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:泄漏试验;无损检验;合格;试验;导热性
【英文主题词】:conductivityleaktest;leaktesting;sensitiveleaktest;thermalconductivityleaktest
【摘要】:Thesetestmethodsareusefulforlocatingandestimatingthesizeofpressurizedgasleaks,eitherasqualitycontroltestsorasfieldinspectionprocedures.Also,theyarevaluableaspretestsbeforeothermoretimeconsumingandmoresensitiveleaktestsareemployed.Thesetestmethodsaresemi-quantitativetechniquesusedtolocateleaksbutcannotbeusedtoquantifyexceptforapproximation.Thesetestmethodsmaybeusedinanaccept-rejecttestmode.1.1Thesetestmethodscoverproceduresfordetectingthesourcesofgasleakingattherateof4.5X10sup-9;mol/s(1X10sup/4;standardcmsup3;/s)orgreater.Thetestsmaybeconductedonanyobjectthatcanbepressurizedwithatracergasthatisdetectablebyathermalconductivitydetector.Thetestsensitivitywillvarywidelydependingonthetracergasused.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:
