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【英文标准名称】:Preparationofsteelsubstratesbeforeapplicationofpaintsandrelatedproducts-Testsfortheassessmentofsurfacecleanliness-Laboratorydeterminationofchlorideoncleanedsurfaces
【原文标准名称】:涂装油漆和相关产品前钢材的预处理.表面清洁度的评定试验.实验室测定清洁表面上氯化物
【标准号】:BSENISO8502-2-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2006-01-04
【实施或试行日期】:2006-01-04
【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】:氯化物;覆层材料;建筑;施工材料;实验室试验;涂料;钢产品;钢;表面洁净度;表面处理;表面;试验;清漆;冲洗液体
【英文主题词】:
【摘要】:ThispartofISO8502describesamethodforthedeterminationofchloride-containingsaltsthatarereadilysolubleinwaterandarepresentonasteelsurface.Themethodisalsoapplicabletopreviouslycoatedsurfaces.Itwillnormallybeusedinalaboratoryusingwashingssampledfromsurfacesonsite.Themethodisapplicabletothedeterminationofsaltsthathavebeendepositedonthesteelsurfacebefore,duringorafterthecleaningoperations.NOTE1Althoughtheprocedureforchloridedeterminationisgenerallyaccurate,theoverallprecisionofthemethodislimitedbyuncertaintiesinthesamplingprocedure.Inaddition,tracesofironchlorideatthebottomofpitsaredifficulttoextractintothesample.Thetestmethodisnotapplicabletosurfacestreatedwithchromate,nitriteoramine,whicharecommonlyusedasinhibitorsinthewaterwhenwetblast-cleaning.Thisisbecauseachromateconcentrationof10mg/lorgreateroranitriteconcentrationof20mg/lorgreaterinthewashwaterinterfereswiththedeterminationofthechloride.Alsotheamineinhibitorscanformahydroxideboundarylayer(notwatersoluble)overthesubstrateandpreventthewaterfromcontactingtheunderlyingsaltforitsremoval.Aniron(lll)ionconcentrationof10mg/lalsointerfereswiththedetermination,buttheiron(lll)ionsareconcentratedintherustdeposits,whichareremovedfromthetestsolutionbyfiltration.NOTE2Theperformanceofapaintsystemisaffectedbytheamountofsolublechlorideremainingonthesurface.Theacceptablelevelofthiscontaminationisrelatedtotheserviceconditions.Forfurtherinformationregardinglevelsofwater-solublesaltcontaminationseeISO/TR15235.
【中国标准分类号】:A29
【国际标准分类号】:25_220_10
【页数】:18P;A4
【正文语种】:英语