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【英文标准名称】:Connectorsforelectronicequipment-Part3-110:Detailspecificationfor8wayconnectorsforfrequenciesupto600MHz
【原文标准名称】:电子设备用连接器.第3-110部分:频率在600MHz以下的8位连接器的详细规范
【标准号】:IEC/PAS61076-3-110-2002
【标准状态】:作废
【国别】:国际
【发布日期】:2002-01
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC48B
【标准类型】:()
【标准水平】:()
【中文主题词】:详细规范;电插头;电子工程;电信;电子设备及元件;规范
【英文主题词】:Detailspecification;Electricplugs;Electronicengineering;Electronicequipmentandcomponents;Specification;Telecommunications
【摘要】:
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:76P.;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforCompressionMoldingThermoplasticMaterialsintoTestSpecimens,Plaques,orSheets
【原文标准名称】:将热塑性材料压塑为试样、饰板或板材的标准实施规程
【标准号】:ASTMD4703-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.09
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acrylonitrile-butadiene-styrene(ABS);chlorinatedpoly(vinylchloride)(CPVC);compressionmolding;polyethylene(PE);poly(vinylchloride)(PVC);styrene-butadiene;testspecimenpreparation;thermoplastics;Acrylonitrile-butadiene-styrene(ABS)
【摘要】:Themethodsbywhichsamplematerialsarepreparedandmoldedinfluencethemechanicalpropertiesofthespecimen.Unlikeinjectionmolding,theobjectiveofcompressionmoldingistoproducetestspecimensorsheetsthatarebothhomogeneousandisotropic.Moldedspecimensmaybemadefrompowderorpelletssuchasarereceiveddirectlyfromamaterialmanufacturer,particlesproducedinarecyclerecoveryoperation,orfromamilledpreformorsheetpreparedonatwo-rollmill.Thepowder,pellets,particles,preform,orsheetaremeltedandmoldedinamolddesignedtoproduceafinishedspecimenofagivengeometry,size,andthickness,ormeltedandmoldedintheformofasmoothplaqueorsheetofuniformthicknessfromwhichdesiredspecimensarecut,punched,ormachined.Workingacompoundonatwo-rollmillpriortomoldingwilldisperseanddistributethecompoundadditivesinamannerthatwillaffectthephysicalpropertiesofthecompound.Theneedformillingasamplepriortocompressionmoldingmaybedeterminedbyreferencetotherelevantmaterialspecificationorthematerialmanufacturer.Itisimportanttotreatdifferentsamplesofthesametypeofmaterialinthesameway:ifmillingwasdonepriortomoldingonamaterialwhichistobeusedasastandardforcomparison,allnewmaterialstobetestedagainstthispracticeshouldbepreparedandmoldedinasimilarmanner.Theapparatusandexactconditionsrequiredtoprepareadequatespecimensmayvaryforeachplasticmaterial.ApparatusandprocedureswhichshouldbesatisfactoryformoldingmanydifferentplasticmaterialsaregiveninthispracticeinSections5and6.TheapparatusandprocedureswhichhavebeenfoundsatisfactoryformoldingcertainspecificmaterialsaregivenintheAppendix.Inanycase,theapparatusandprocedurestobeusedinproducingcompression-moldedspecimensofagivenmaterialmaybeobtainedbyreferencetotherelevantmaterialspecificationandshouldbeagreeduponbetweenthepurchaserandthesupplier.1.1Thispracticecoversthecompressionmoldingofthermoplasticgranulesandmilledstockforthepreparationoftestspecimens.1.2Whileconditionsforcertainmaterialsaregiven,theprimarysourceofspecificconditionsshallbethematerialspecificationstandardsforeachtypeofmaterial.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThemainbodyofthispracticeisequivalenttoISO293-1986.AnnexA1andISO293-1986differinsomedetails;however,specimenspreparedusingAnnexA1,ProcedureAshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodD.SpecimenspreparedusingAnnexA1,ProcedureCshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodB.However,duetothegreatercoolingratetolerancesoftheISOstandard,specimenspreparedinaccordancewithISOCoolingMethodBmaynotbeequivalenttoAnnexA1,ProcedureC.
【中国标准分类号】:G33
【国际标准分类号】:
【页数】:12P.;A4
【正文语种】:英语