【英文标准名称】:Fibre-reinforcedplastics-Thermosettingmouldingcompoundsandprepregs-Determinationofcurecharacteristics
【原文标准名称】:纤维增强塑料热固性模压塑料和预浸料固化特性的测定
【标准号】:ISO12114-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-05
【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】:纤维增强的;模塑材料;元部件;试验;热固性聚合物;预浸料坯;淬火;增强塑料;热膨胀;静压铸件;收缩;定义
【英文主题词】:Components;Curable;Definitions;Determination;Fibrereinforced;Hardening;Hardeningtime;Mouldingmaterials;Mouldings(shapedsection);Plastics;Prepreg;Reinforcedplastics;Samplingmethods;Shrinkage;Staticalcasting;Testequipment;Testing;Thermalexpansion;Thermosettingpolymers
【摘要】:ThisInternationalStandardspecifiestwomethodsforthedeterminationofthecurecharacteristicsoffibre-reinforcedthermosettingmouldingcompoundsandprepregs.Thecharacteristicsmeasuredare—theheatgeneratedbytheexothermicreaction;—thethermalexpansionofthecompoundaccompanyingtheriseintemperature;—theshrinkageduetothecuringreaction.Themethodsspecifiedareapplicabletoallcompoundscomprisingthermosettingmatricesreinforcedwithfibres.Themajorfieldofapplicationiscompoundsbasedonunsaturatedpolyesterresins.MethodIdescribesatestmethodtodeterminethereactivityofathermosettingcompoundbyasimpleprocedure.Thismethodexaminesonlythereactivebehaviourofthematrixanditsstateofstabilization(onefactoraffectingtheshelflifeofthemouldingcompound).MethodIIdescribesatestmethodwhichneedsmoresophisticatedequipment,takesmoretimebutprovidesadditionaldetailedinformationaboutthephysicalbehaviourofthecompoundundersimulatedpracticalmouldingconditions.Itproducesaplatewhichcanbeusedforfurthertestingtodeterminepropertiesofthemouldedarticle.
【中国标准分类号】:G32
【国际标准分类号】:83_120
【页数】:13P.;A4
【正文语种】:英语
【英文标准名称】:MeasurementofLiquidFlowinClosedConduitsbyWeighingMethodsErrata-December1989
【原文标准名称】:在封闭导管中用称重法测量液体流量
【标准号】:ASMEMFC-9M-1988
【标准状态】:现行
【国别】:美国
【发布日期】:1988-01-01
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:流量测量技术;流量测量;流量率;称重方法;管道;液体;计算方法
【英文主题词】:Flowmeasurements;Flowmeasuringtechniques;Flowrates;Liquids;Massflowrates;Methodsofcalculation;Metric;Pipelines;Weighingmethods
【摘要】:ThisStandardspecifiesamethodofliquidflowratemeasurementinclosedconduitsbymeasuringthemassofliquiddeliveredintoaweighingtankinaknowntimeinterval.Itdealsinparticularwiththemeasuringapparatus,procedure,andmethodforcalculatingtheflowrateandtheuncertaintiesassociatedwiththemeasurement.Themethoddescribedmaybeappliedtoanyliquid,providedthatitsvaporpressureissuchthatanyescapeofliquidfromtheweighingtankbyvaporizationisnotsufficienttoeffecttherequiredmeasurementaccuracy.ClosedweighingtanksandtheirapplicationtotheflowmeasurementofliquidsofhighvaporpressurearenotconsideredinthisStandard.ThisStandardconsidersonlythemeasurementtechniquesanddoesnotaddressanypossiblehazardsinvolvedinhandlingtheliquidinvolved.Theoretically,thereisnolimittotheapplicationofthismethod,whichisusedgenerallyinfixedlaboratoryinstallationsonly.However,foreconomicreasons,typicalhydrauliclaboratoriesusingthismethodcanproduceaccurateflowratesof500kg/s(3300lbm/sec)orless.Owingtoitshighpotentialaccuracy,thismethodisoftenusedasaprimarymethodforcalibrationofothermethodsordevicesformassflowratemeasurementorvolumetricflowratemeasurement,providedthatthedensityoftheliquidisknownaccurately.Itmustbeensuredthatthepipelineisrunningfullwithnoairorvaporpocketspresentinthemeasuringsection.
【中国标准分类号】:A52
【国际标准分类号】:17_120_10
【页数】:24P.;A4
【正文语种】:英语
基本信息
| 标准名称： | C型板簧螺母 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1900-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
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