【英文标准名称】:StandardTestMethodforResinFlowofCarbonFiber-EpoxyPrepreg
【原文标准名称】:碳纤维环氧树脂预浸料坯的树脂流动性标准试验方法
【标准号】:ASTMD3531-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D30.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:纤维;叠层板材;航空运输;预浸料坯;环氧衍生物;航空航天运输;树脂;试验;塑料;材料;碳纤维;航天技术
【英文主题词】:carbonfiber-epoxyprepreg;resinflow
【摘要】:Thistestmethodisusedtoobtaintheresinflowofcarbonfiber-epoxyprepregtapeorsheetmaterial.Itissuitableforcomparinglotsofmaterialofsupposedlythesamecharacteristicsandalsoforcomparativeevaluationofmaterialsproducedbydifferentvendorsusingdifferentresin-fibercombinations.Compositepartsarelaminatedfromprepregmaterialatvariouspressuresandtemperatures.Productionprocessdesignwillrequireaflowtestberunatatemperatureandapressureclosetothatoftheactualmoldingconditions.Allmethodsofmeasuringresinflowaredependentonthesizeandgeometryofthespecimen.Thistestmethodusesthesmallestquantityoftapethatwillgivereproducibleresults.3.2.1Thepercentresinflowofasinglefiberandresinsystematatemperatureandpressurevarieswiththevolatilecontent,degreeofadvancementofepoxyresin,andwiththeresincontentoftheprepregtapeorsheet.3.2.2Asvolatilecontentanddegreeofresincure(advancement)changewithtime,thistestmethodisusefulincomparingthelifeofprepregtapeandsheet.1.1Thistestmethodcoversthedeterminationoftheamountofresinflowthatwilltakeplacefromprepregtapeorsheetundergivenconditionsoftemperatureandpressure.1.2Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W04
【国际标准分类号】:83_120
【页数】:3P.;A4
【正文语种】:
【英文标准名称】:Naturalgas-Calculationofcompressionfactors-Introductionandguidelines
【原文标准名称】:天然气.压缩因数的计算.介绍和指南
【标准号】:BSISO12213-1-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-04-15
【实施或试行日期】:1998-04-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:天然气;质量;热力学;文献索引;成份允差;压缩气体;热力学性质;管道;测量特征;准确度;化学成分;数学计算;热值;相对密度
【英文主题词】:Calculatingmethods;Compacting;Compressedgas;Compression;Concentration(chemical);Conglomerates;Definition;Definitions;Entries;Gasmixtures;Generalconditions;Materialstesting;Mathematicalcalculations;Naturalgas;Realgasfactors
【摘要】:ThisInternationalStandardspecifiesmethodsforthecalculationofcompressionfactorsofnaturalgases,naturalgasescontainingasyntheticadmixtureandsimilarmixturesatconditionsunderwhichthemixturecanexistonlyasagas.Thestandardisinthreeparts:part1givesanintroductionandprovidesguidelinesforthemethodsofcalculationdescribedinparts2and3.Part2givesamethodforusewherethedetailedmolarcompositionofthegasisknown.Part3givesamethodforusewherealessdetailedanalysis,comprisingsuperiorcalorificvalue(volumetricbasis),relativedensity,carbondioxidecontentand(ifnon-zero)hydrogencontent,isavailable.Bothmethodsareapplicabletodrygasesofpipelinequalitywithintherangeofconditionsunderwhichtransmissionanddistribution,includingmeteringforcustodytransferorotheraccountingpurposes,arenormallycarriedout.Ingeneral,suchoperationstakeplaceattemperaturesbetweenabout263Kand338K(approximately-10℃to65℃)andpressuresnotexceeding12MPa(120bar).Withinthisrange,theuncertaintyofpredictionofbothmethodsisabout±0.1%providedthattheinputdata,includingtherelevantpressureandtemperature,havenouncertainty.NOTE—PipelinequalitygasisusedinthisInternationalStandardasaconcisetermforgaswhichhasbeenprocessedsoastobesuitableforuseasindustrial,commercialordomesticfuel.Althoughthereisnoformalinternationalagreementuponthecompositionandpropertiesofagaswhichcomplieswiththisconcept,somequantitativeguidanceisprovidedin5.1.1.Adetailedgasqualityspecificationisusuallyamatterforcontractualarrangementsbetweenbuyerandseller.Themethodgiveninpart2isalsoapplicable(withincreaseduncertainty)tobroadercategoriesofnaturalgas,includingwetorsourgases,withinawiderrangeoftemperaturesandtohigherpressures,forexampleatreservoirorundergroundstorageconditionsorforvehicular(NGV)applications.Themethodgiveninpart3isapplicabletogaseswithahighercontentofnitrogen,carbondioxideorethanethannormallyfoundinpipelinequalitygas.Themethodmayalsobeappliedoverwiderrangesoftemperatureandpressurebutwithincreaseduncertainty.Forthecalculationmethodsdescribedtobevalid,thegasmustbeaboveitswaterandhydrocarbondewpointsattheprescribedconditions.Thestandardgivesalloftheequationsandnumericalvaluesneededtoimplementbothmethods.Verifiedcomputerprogrammesareavailable(seeannexB).
【中国标准分类号】:E24
【国际标准分类号】:75_060
【页数】:20P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 薄膜介质调谐可变电容器结构型式及尺寸 |
| 英文名称： | Structure type and dimensions for film dielectric tuning variable capacitors |
| 中标分类： |
矿业 >>
矿业综合 >>
技术管理 |
| 替代情况： | SJ 2666-86 |
| 发布部门： | 中华人民共和国电子工业部 |
| 发布日期： | 1995-04-22 |
| 实施日期： | 1995-10-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 归口单位： | 电子工业部标准化研究所 |
| 起草单位： | 电子工业部标准化研究所 |
| 起草人： | 纪善恩、魏启富 |
| 出版社： | 电子工业出版社 |
| 出版日期： | 1995-09-01 |
| 页数： | 5页 |
适用范围
本标准规定了薄膜介质调谐可变电容器(以下简称电容器)的结构型式及尺寸。
本标准适用于薄膜介质调谐可变电容器。
前言
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目录
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引用标准
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所属分类： 矿业 矿业综合 技术管理