【英文标准名称】:Plastics-Smokegeneration-Part3:Determinationofopticaldensitybyadynamic-flowmethod
【原文标准名称】:塑料烟雾产生第3部分:动态流动法测定光密度
【标准号】:ISO/TR5659-3-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-09
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:高温试验;塑料;光密度;试验;测定;渗透技术;定义;定义;烟雾扩展
【英文主题词】:Definition;Definitions;Determination;High-temperaturetesting;Opticaldensity;Permeabilitytechniques;Plastics;Smokedevelopment;Testing
【摘要】:1ThispartofISO5659specifiesamethodofmeasuringsmokeproductionfromtheexposedsurfaceofspecimensofessentiallyflatmaterials,compositesorassembliesnotexceeding25mminthickness,whenplacedinahorizontalorientationandsubjectedtospecifiedlevelsofthermalirradianceunderforcedventilationconditions.withorwithouttheapplicationofapilotflame.Thismethodoftestisapplicabletoplasticsandmayalsobeusedfortheevaluationofothermaterials(e.g.rubbers,textilecoverings,paintedsurfaces,woodandotherbuildingmaterials).2Valuesofopticaldensitydeterminedbythistestarespecifictothespecimenorassemblymaterialintheformandthicknesstestedandarenottobeconsideredinherent,fundamentalproperties.3Thetestisintendedforuseinresearchanddevelopmentandnotprimarilyasabasisforratingsforbuildingcodesorotherpurposes.Nobasisisprovidedforpredictingthedensityofsmokewhichmaybegeneratedbythematerialsuponexposuretoheatandflameunderotherexposureconditions,suchasend-useconditions,norhasanycorrelationbeenestablishedwithmeasurementsderivedfromothertestmethods.4Itisemphasizedthatsmokeproductionfromamaterialvariesaccordingtotheventilationconditionsandtheirradianceleveltowhichthespecimenisexposed.Inmakinguseoftheresultsofthismethod,itshouldbeborneinmindthattheresultsarebasedonexposuretothespecificirradiancelevelsof25kW/mandof50kW/munderspecificventilationconditions.
【中国标准分类号】:G31
【国际标准分类号】:13_220_40;83_080_01
【页数】:14P;A4
【正文语种】:英语