作者:标准资料网 时间:2024-05-15 14:28:35   浏览:8445   来源:标准资料网

【英文标准名称】:Plastics.Determinationofthetotalluminoustransmittanceoftransparentmaterials.Single-beaminstrument
【原文标准名称】:塑料.透明材料光透射率总量的测定.单束光发射仪器
【标准号】:BSENISO13468-1-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-01-15
【实施或试行日期】:1997-01-15
【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】:试样制备;波的性质和现象;光度计;材料的光学性质;透明度;膜(物态);试验设备;透射率;塑料;再现性;试样;薄板材
【英文主题词】:Definitions;Determination;Films(statesofmatter);Incidentlightradiation;Lighttransmission;Lighttransmittance;Opticalpropertiesofmaterials;Photometers;Photometry;Plastics;Reproducibility;Sheetmaterials;Specimenpreparation;Testequipment;Testspecimens;Transmittance;Transparencies;Transparency;Wavepropertiesandphenomena
【摘要】:ThispartofISO13468coversthedeterminationofthetotalluminoustransmittance,inthevisibleregionofthespectrum,ofplanartransparentandsubstan-tiallycolourlessplastics,usingasingle-beamphoto-meterwithaspecifiedCIEstandardlightsourceandphotodetector.ThispartofISO13468cannotbeusedforplasticswhichcontainfluorescentmaterials.ThispartofISO13468isapplicabletotransparentmouldingmaterials,filmsandsheetsnotexceeding10mminthickness.NOTES1Totalluminoustransmittancecanalsobedeterminedbyadouble-beamspectrophotometerasinpart2ofthestan-dard.Part1,however,providesasimplebutprecise,prac-ticalandquickdetermination.Thismethodissuitableforusenotonlyforanalyticalpurposesbutalsoforqualitycontrol.2Substantiallycolourlessplasticsincludethosewhicharefaintlytinted.3Specimensmorethan10mmthickmaybemeasuredprovidedtheinstrumentcanaccommodatethem,buttheresultsmaynotbecomparablewiththoseobtainedusingspecimenslessthan10mmthick.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:16P;A4
【正文语种】:英语