【英文标准名称】:StandardPracticeforDesigningaProcessforCleaningTechnicalGlasses
【原文标准名称】:设计玻璃清洗方法的标准实施规程
【标准号】:ASTMC912-1993(2003)
【标准状态】:现行
【国别】:
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:C14.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:玻璃;清洁处理;工艺
【英文主题词】:cleaning;glass;solubility;solvents;technical;
【摘要】:Manyofthelow-silicatechnicalglasseswhichcontainsolubleorreactiveoxidesrequireprocessingorinvolveapplicationsthatrequirecleaning.Veryoftenthesecleaningprocedureshaveevolvedoverseveraldecadesandareconsideredanart.Theyusuallycontainnumeroussteps,someofquestionablevalidity.Itisthepremiseofthispracticethatcleaningglasscanbemorescientific.Designofacleaningprocedureshouldinvolve(1)adefinitionofthesoiltoberemoved,(2)anawarenessoftheconstraintsimposedbytheglasscomposition,and(3)arationalselectionofalternativemethodsthatwillremovethesoilandleavetheglassinaconditionsuitableforitsintendedapplication.Thispracticeprovidesinformationtoassistinstep(3).Generalreferencesonglasscleaningandonvariousmethodsofevaluatingcleanlinessandassociatedinformationhasbeenpublished.21.1Thispracticeisintendedtoprovideinformationthatwillpermitdesignofarationalcleaningprocedurethatcanbeusedwithaglassthatissomewhatsolubleinmanyaqueouschemicalsolutions.Typically,thistypeofglassisusedinapplicationssuchasopticalware,glass-to-metalseals,lowdielectriclossproducts,glassfibers,infraredtransmittingproducts,andproductsresistanttometallicvapors.1.2Inmostcases,thistypeofglasscontainshighconcentrationsofoxidesthattendtoreactwithanumberofaqueouschemicals.SuchoxidesincludeB2O3,Al2O3,R2,RO,La2O3,ZnO,PbO,P2O5,andFe2O3.Themoreconventionalhigh-silicaglassesareusuallymorechemicallyresistant,butthecleaningprinciplesoutlinedherealsoapplytothem.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection4andTable1.
【中国标准分类号】:Q34
【国际标准分类号】:81_040_01
【页数】:6P.;A4
【正文语种】: