SJ 2731-1986 ２ＣＺ３１７型硅快开关整流二极管详细规范
作者:标准资料网
时间:2024-05-03 20:43:44
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来源:标准资料网
基本信息
| 标准名称： | ２ＣＺ３１７型硅快开关整流二极管详细规范 |
| 英文名称： | Detail specification for silicon high speed switching rectifier fiodes,Type 2CZ317 |
| 中标分类： |
能源、核技术 >>
能源、核技术综合 >>
技术管理 |
| 发布部门： | 中华人民共和国电子工业部 |
| 发布日期： | 1986-10-24 |
| 实施日期： | 1987-10-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2010-01-20 |
| 提出单位： | 中国电子技术标准化研究所 |
| 起草单位： | 天津第三半导体器件厂 |
| 起草人： | 王恩平、孙志昌、黄宗芬、李新华 |
| 出版社： | 电子工业出版社 |
| 出版日期： | 1987-09-01 |
| 页数： | 10页 |
适用范围
在彩色电视机及其它无线电电子设备中作中速开关或整流用。
前言
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目录
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引用标准
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所属分类： 能源 核技术 能源 核技术综合 技术管理
【英文标准名称】:StandardSpecificationforManufacturerQualityAssuranceProgramforLightSportGyroplaneAircraft
【原文标准名称】:轻型运动自转旋翼机的生产商质量保证计划
【标准号】:ASTMF2449-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:F37.50
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:gyroplane;lightsportaircraft;Lightsportgyroplane;Qualityassurance(QA)
【摘要】:1.1Thisspecificationsetsminimumrequirementsforlightsportgyroplaneorgyroplanecomponentqualityassuranceandproductionacceptanceprograms.1.2Thisspecificationappliestolightsportgyroplaneaircraftseekingcivilaviationauthorityapprovalintheformofflightcertificates,flightpermits,orotherlikedocumentation.Thisspecificationappliestokitandreadytoflyaircraft.1.3CertificationofcompliancewithspecificindividualprocessesinCENUNIEN9100,version2005orlater,maybepresentedascompliancewithsimilarrepresentativeindividualrequirementsofthisASTMQualityAssurancestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.
【中国标准分类号】:V36
【国际标准分类号】:49_020
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminationofAerosolMonomericandOligomericHexamethyleneDiisocyanate(HDl)inAirwith(Methoxy-2-phenyl-1)Piperazine(MOPIP)intheWorkplace
【原文标准名称】:利用(甲氧基-2-苯基-1)哌嗪(MOPIP)测定工作场所空气中气溶胶单体和低聚二异腈酸己二酯(HDI)的标准试验方法
【标准号】:ASTMD6561-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:气溶胶;空气;测定;二异腈酸己二酯(HDI);哌嗪;试验方法;试验;工作地点
【英文主题词】:airmonitoring;dualfiltersamplingsystem;hexamethylenediisocyanate;high-performanceliquidchromatography;(methoxy-2-phenyl-1)piperazine;samplingandanalysis;workplaceatmospheres
【摘要】:HDIismostlyusedinthepreparationofpaints.Forthelasttenyears,theuseofisocyanatesandtheirindustrialneedshavebeeninconstantgrowth.Diisocyanatesandpolyisocyanatesareirritantstoskin,eyes,andmucousmembranes.Theyarerecognizedtocauserespiratoryallergicsensitization,asthmaticbronchitis,andacuterespiratoryintoxication(3-6).TheAmericanConferenceofGovernmentalIndustrialHygienists(ACGIH)hasadoptedathresholdlimitvalue-timeweightedaverage(TLV-TWA)of0.005ppm(V)or0.034mg/m3formonomericHDI(7).TheOccupationalSafetyx0026;HealthAdministrationoftheU.S.DepartmentofLabor(OSHA)hasnotlistedapermissibleexposurelimit(PEL)forHDI(8).DuetoitslowLODandlowrequiredvolume(15L),thistestmethodiswellsuitedformonitoringofrespiratoryandotherproblemsrelatedtodiisocyanatesandpolyisocyanates.Itsshortsamplingtimesarecompatiblewiththedurationofmanyindustrialprocesses,anditslowdetectionlimitwiththeconcentrationsoftenfoundintheworkingarea.1.1Thistestmethodcoversthedeterminationofaerosolhexamethylenediisocyanate(HDI)inairsamplescollectedfromworkplaceandambientatmospheres.Themethoddescribedinthistestmethodcollectsseparatefractions.Onefractionwillbedominatedbyvapor,andtheotherfractionwillbedominatedbyaerosol.Itisnotknownatthepresenttimewhetherthisrepresentsaperfectseparationofvaporandaerosol,andinanycase,therearenotseparateexposurestandardsforvaporandaerosol.Therefore,incomparingtheresultsforisocyanateagainstastandard,resultsfromthetwofractionsshouldbecombinedtogiveasingletotalvalue.Thereasonforsplittingthesampleintotwofractionsistoincreaseanalyticsensitivityforthevaporfractionandalsotogivethehygienistorventilationengineersomeinformationconcerningthelikelystateoftheisocyanatespecies.Theanalysesofthetwofractionsaredifferent,andareprovidedinseparate,linked,standardstoavoidconfusion.Thistestmethodisprincipallyusedtodetermineshorttermexposure(15min)ofHDIinworkplaceenvironmentsforpersonalmonitoringorinambientair.Theanalysisofthevaporfractionisperformedseparately,asdescribedinTestMethodD6562.1.2Differentialairsamplingisperformedwithasegregatingdevice.Theaerosolfractioniscollectedonapolytetrafluoroethylene(PTFE)filter.1.3Immediatelyaftersampling,thePTFEfilteristransferredintoajarcontaininga(methoxy-2phenyl-1)piperazine(MOPIP)solutionintoluene.1.4Theanalysisoftheaerosolfractionisperformedbyusingahighperformanceliquidchromatograph(HPLC)equippedwithanultraviolet(UV)detector.Therangeofapplicationofthetestmethodhasbeenvalidatedfrom0.052to1.04gofmonomericHDI/mL,whichcorresponds,basedona15Lairsample,toconcentrationsfrom0.004to0.070mg/m3ofHDI.Thoseconcentrationscorrespondtoarangeofaerosolphaseconcentrationsfrom0.5ppb(V)to10ppb(V)andcovertheestablishedthresholdlimitvalve(TLV)valueof5ppb(V).1.5ThequantificationlimitforthemonomericHDIis0.041gpermL,whichcorrespondsto0.003mg/m3fora15Lsampledairvolume.ThisvalueisequivalenttotentimesthestandarddeviationobtainedfromtenmeasurementscarriedoutonastandardsolutionincontactwiththePTFEfilterwhoseconcentrationof0.1g/mLisclosetotheexpecteddetectionlimit.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesaf......
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:5P.;A4
【正文语种】: