【英文标准名称】:Determinationofresistanceofrubbertoozonecrackingunderstaticstrain
【原文标准名称】:生橡胶和弹性体的检验.抗臭氧龟裂稳定性的测定.静应力
【标准号】:DIN53509T.1-1990
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:


【英文标准名称】:Petroleumproductsandcrudepetroleum-Determinationofvapourpressure-Reidmethod
【原文标准名称】:石油产品和原油蒸气压的测定雷德法
【标准号】:ISO3007-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-10
【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/TC28
【标准类型】:()
【标准水平】:()
【中文主题词】:物理试验;试验;试验;石油产品;定义;瑞德法;蒸气压力;测定
【英文主题词】:Definitions;Determination;Petroleumproducts;Physicaltesting;Reid;Testing;Tests;Vapourpressure
【摘要】:ThisInternationalStandardspecifiesamethodforthedeterminationofthevapourpressureofliquidpetroleumproductsconsistingofessentiallyorwhollyofhydrocarboncomponents,orcontainingoxygenatedhydrocarbonsofspecifictypesandatspecifiedmaximumconcentrations.Themethoddoesnotapplyoutsidetheseconcentrationlevels,nortoanyblendscontainingmethanolorotheroxygenatedhydrocarbonsnotcoveredinnote1.NOTE1Themaximumconcentrationofetherscontaining5ormorecarbonatomsis15%(V/V),andforethanolis10%(V/V).Forhigheralcohols,themaximumconcentrationis7%(V/V).NOTE2ForthepurposesofthisInternationalStandard,theterm"%(V/V)"isusedtorepresentthevolumefractionofamaterial.Forpetroleumproductscontainingmethanol,orotheroxygenatedhydrocarbonsoutsidethescopeofnote1,adryvapour-pressuretestmethodshouldbeused.Forliquefiedpetroleumgases,ISO4256shouldbeused.Thetestmethodmaybeappliedtovolatilecrudepetroleumwithavapourpressureexceeding10kPa,althoughtheprecisionhasnotbeenevaluated.FourproceduresaredescribedinthisInternationalStandard.ProceduresAandBarealternativeapparatusconfigurationsforproductswithaReidvapourpressureupto180kPa,ProcedureCisappliedtoliquidproductswithaReidvapourpressureabove180kPa,andProcedureDappliestoaviationgasolineswithaReidvapourpressureofapproximately50kPa.Vapourpressureisanimportantphysicalpropertyofvolatileliquids,andhascriticalperformanceimplicationsforautomotiveandaviationgasolines.Vapourpressureisalsooneofthepropertiesaffectingatmosphericevaporation,andisthereforeincreasinglyusedinregulationsrelatingtoemissionsandairqualitycontrol.Vapourpressureisalsoacriticalpropertylimitingtheperformanceandsafetyofoperationofequipmentduringtransferoperations.NOTEBecausetheexternalatmosphericpressureiscounteractedbytheatmosphericpressureinitiallyinthevapourchamber,theReidvapourpressureisapproximatelythe"absolute"vapourpressureat37,8℃.TheReidvapourpressurediffersfromthetruevapourpressureofthesampleowingtoslightvaporizationofthesampleandthepressureofwatervapourandairintheconfinedspace.
【中国标准分类号】:E30
【国际标准分类号】:75_040;75_080
【页数】:17P;A4
【正文语种】:英语