DIN 49646-30-1987 IEC灯头量规.检验G23灯座最小保持力的量规"C"
时间:2024-05-25 05:45:00 来源: 标准资料网 作者：标准资料网 阅读：9314
【英文标准名称】:IECgaugesforlampholders;pluggauges"C"forcheckingminimumretentionforceinG23lampholders
【原文标准名称】:IEC灯头量规.检验G23灯座最小保持力的量规"C"
【标准号】:DIN49646-30-1987
【标准状态】:作废
【国别】:德国
【发布日期】:1987-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:检验;IEC灯座量规;测量仪器;公差;量规;尺寸;灯;灯座量规;电气工程;照明系统
【英文主题词】:iecholdergauges;gauges;lampholdergauges;tolerances(measurement);lamps;electricalengineering;inspection;dimensions;lightingsystems;measuringinstruments
【摘要】:
【中国标准分类号】:J42;K95
【国际标准分类号】:29_140_10
【页数】:3P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforDeterminingTemperaturesandHeatsofTransitionsofFluoropolymersbyDifferentialScanningCalorimetry
【原文标准名称】:用差式扫描量热法测定含氟聚合物温度和转化热的标准试验方法
【标准号】:ASTMD4591-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D20.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:转化;测定;氟;塑料;聚合物;温度;测试
【英文主题词】:differentialscanningcalorimetry;DSC;fluoropolymer(s);heatsoffusion;meltingpoint;thermalanalysis
【摘要】:DSCanalysismaybeusedwithfluoropolymerstoachieveatleastfourdifferentobjectivesasfollows:4.1.1Tomeasuretransitiontemperaturestoaidintheidentificationofthevariousfluoropolymers,individuallyorinmixtures;4.1.2Tocomparetherelativelevelsofcrystallinecontentoftwoormorespecimensofasampleofafluoropolymerrelativetoanothersamplebymeasuringtheheatoffusion;Note28212;Absolutevaluesofcrystallinecontentcannotbedetermineduntilvaluesforheatsoffusionofthecompletelycrystallinepolymersareavailable.4.1.3TocharacterizePTFE(DSCthermalcurvesdeterminedonpowdersorproductsofPTFEthathaveneverbeenmeltedconveyappreciableinformationaboutdetailsofmorphologyandmolecularstructure);44.1.4Tosupplementthetestforstandardspecificgravity(SSG)describedinSpecificationsD4894andD4895byusingtheheatofcrystallizationofpurePTFEhomopolymer,dependingontherelativemolecularweightofthespecimen.Thescopesofthesespecifications,however,includePTFEresinsmodifiedwithsmallamountsofcomonomers,andmanycommercialPTFEresinsaremodifiedinthismanner.Thesemodificationscanhaveprofoundeffectsoncrystallizationbehavior.Publishedrelationships4betweenheatofcrystallizationandmolecularweightrefertopurePTFEhomopolymersand,therefore,cannotbeappliedtothemodifiedresins.1.1Thistestmethoddefinesconditionsfortheuseofdifferentialscanningcalorimetry(DSC)withfluoropolymers.ItcoverstheuseofDSCanalyseswiththefluoropolymers,PTFE,PVDF,PCTFE,andPVFandtheircopolymersPFA,MFA,FEP,ECTFE,EFEP,VDF/HFP,VDF/TFE/HFP,VDF/CTFE.Thetestmethodisapplicabletotheanalysisofpowdersaswellassamplestakenfromsemi-finishedorfinishedproducts.ThenatureoffluoropolymersissuchthatspecialproceduresareneededforrunningDSCanalysisandinterpretingtheresults.1.2ThevaluesstatedinSIunitsasdetailedinIEEE/ASTMSI-10aretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ThereiscurrentlynoISOstandardthatduplicatesthistestmethod.ISO12086-1andISO12086-2coversimilartestingandreferencethistestmethodfortestingconditions.
【中国标准分类号】:G32
【国际标准分类号】:83_080_20
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:Specificationforpapertapefordataprocessing-Dimensionsandlocationofpunchedholesinpapertape
【原文标准名称】:数据处理纸带规范.第2部分:纸带穿孔尺寸和位置
【标准号】:BS3880-2-1971
【标准状态】:作废
【国别】:英国
【发布日期】:1971-05-28
【实施或试行日期】:1971-05-28
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据媒体;湿度;孔;位置;穿孔带;穿孔道;工作环境;数字标志;尺寸;数据处理;宽度
【英文主题词】:Datamedia;Dataprocessing;Dimensions;Environment(working);Holes;Humidity;Numericaldesignations;Position;Punchtracks;Punchedtapes;Width
【摘要】:Specifiesthedimensionsandlocationofpunchedholesinpapertapeanddiscussesenvironmentalconditionsforpunchingandreading.
【中国标准分类号】:L64
【国际标准分类号】:35_220_10
【页数】:12P;A4
【正文语种】:英语