【英文标准名称】:Methodsoftestforpaints-Testingofcoatingpowders-Determinationofflowpropertiesofacoatingpowder/airmixture
【原文标准名称】:涂料试验方法.第J9部分:粉末涂层/气体混合物流动特性测定
【标准号】:BS3900-J9-1993
【标准状态】:现行
【国别】:英国
【发布日期】:1993-04-15
【实施或试行日期】:1993-04-15
【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】:涂料;试验条件;粒状材料;流量测量;试验设备;流态化;混合物;流量率;覆层;喷涂;误差修正;空气;校正
【英文主题词】:Abilitiestoflow;Calorificvalues;Coatingmaterials;Concentration;Conglomerates;Determination;Flowanalysis;Flowproperties;Paints;Particulatematerials;Powder;Powdercoatings;Properties;Samplingmethods;Sprayability;Spraying;Teststandards;Testing;Varnishes
【摘要】:ThispartofISO8130specifiesamethodfordeter-miningtheflowpropertiesofamixtureofcoatingpowderandair.Themethodreflectscommercialpracticeinpowderspraying(see"Bibliography",annexB).Theresultsobtainedareinfluencedbythecompo-sitionofthecoatingpowder,itsdensity,particlesizedistributionandparticleshape,togetherwiththetendencyoftheparticlestoagglomerateandtoac-ceptatriboelectriccharge.NOTE1Itiswellknownthatthetransportandsprayingcharacteristicsofpowdersarehighlydependentontheirflowpropertiesinbulkandinair.Theproceduredescribedinthismethodisconsideredtobemoremeaningfulthanthe"flowangle"approachsometimesusedtoevaluatebulkflowproperties.Inthelatter,theangleoftheconeformedwhenapowderisallowedtoflowthroughaverti-calfunnelontoahorizontalsurfaceismeasured.Agivenmassofpowderwithgoodflowpropertiesformsashallowerconethananequalmassofapowderwithpoorerflow.Theobjectionstotheflowanglemethodarethatitisdifficulttoobtainaprecisemeasurementandthatthepowderisusedalone,whereasduringapplicationitismixedwithair.
【中国标准分类号】:G50
【国际标准分类号】:87_040
【页数】:12P.;A4
【正文语种】:英语


Product Code:SAE AS8712
Title:Valve; Air Relief, Low Pressure
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:This specification covers the requirements for one type of low-pressure relief valve for use in pressurized shipping containers.