QB 1059-1991 瓦楞纸板厚度测定仪
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基本信息
标准名称: | 瓦楞纸板厚度测定仪 |
中标分类: | 仪器、仪表 >> 试验机与无损探伤仪器 >> 非金属材料试验机 |
替代情况: | 被QB/T 1055-1998代替 |
发布日期: | |
实施日期: | 1991-12-01 |
首发日期: | |
作废日期: | 1999-03-01 |
出版日期: | |
页数: | 6页 |
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所属分类: 仪器 仪表 试验机与无损探伤仪器 非金属材料试验机
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基本信息
标准名称: | 动物源食品中氯霉素残留量的测定 气相色谱-质谱法 |
英文名称: | The determination of chooramphenicol in animal tissues by GC-MS method |
中标分类: | |
ICS分类: | 食品技术 >> 肉、肉制品和其他动物类食品 >> 家禽和蛋 |
发布部门: | 中华人民共和国农业部 |
发布日期: | 2006-12-16 |
实施日期: | 2006-12-16 |
首发日期: | |
作废日期: | |
起草单位: | 农业部畜产品质量监督检验测试中心 |
出版日期: | 2006-12-16 |
适用范围
没有内容
前言
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所属分类: 食品技术 肉 肉制品和其他动物类食品 家禽和蛋
【英文标准名称】:StandardPracticeforMeasurementofWetFilmThicknessbyNotchGages【原文标准名称】:刻痕量规测定湿膜厚度的标准实施规程
【标准号】:ASTMD4414-1995(2007)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D01.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:覆层;厚度测量;厚度;测量;涂漆;涂料;工艺
【英文主题词】:circularnotchedgage;rectangularnotchedgage
【摘要】:Wetfilmthicknessmeasurementsofcoatingsappliedonarticlescanbeveryhelpfulincontrollingthethicknessofthefinaldrycoating,althoughinsomespecificationsthewetfilmthicknessisspecified.Mostprotectiveandhighperformancecoatingsareappliedtomeetarequirementorspecificationfordryfilmthicknessforeachcoatorforthecompletedcoatingsystem,orforboth.Thereisadirectrelationshipbetweendryfilmthicknessandwetfilmthickness.Thewetfilm/dryfilmratioisdeterminedbythevolumeofvolatilesinthecoatingasapplied,includingpermittedthinning.Withsomeflatcoatingsthedryfilmthicknessishigherthanthatcalculatedfromthewetfilmthickness.Consequently,theresultsfromthenotchgagearenottobeusedtoverifythenonvolatilecontentofacoating.Measurementofwetfilmthicknessatthetimeofapplicationismostappropriateasitpermitscorrectionandadjustmentofthefilmbytheapplicatoratthetimeofapplication.Correctionofthefilmafterithasdriedorchemicallycuredrequirescostlyextralabortime,mayleadtocontaminationofthefilm,andmayintroduceproblemsofadhesionandintegrityofthecoatingsystem.TheproceduresusingnotchedgagesdonotprovideasaccurateorsensitivemeasurementsofwetfilmthicknessasdotheInterchemicalandPfundgagesdescribedinTestMethodsD1212.Notchgagesmay,however,beusedonnonuniformsurfaces,likeconcreteblock,thataretooroughtousetheInterchemicalandPfundgages.Alsonotchedgagescanbeveryusefulintheshopandfieldfordeterminingtheapproximatethicknessofwetfilmsovercommercialarticleswheresize(s)andshape(s)arenotsuitableformeasurementsbyothertypesofgages.Examplesofsuchitemsareellipses,thinedges,andcorners.Anoperatorexperiencedintheuseofanotchedgagecanmonitorthecoatingapplicationwellenoughtoensuretheminimumrequiredfilmthicknesswillbeobtained.Applicationlosses,suchasoverspray,lossontransfer,andcoatingresidueinapplicationequipment,areasignificantunmeasurablepartofthecoatingusedonajobandarenotaccountedforbymeasurementofwetfilmthickness.1.1Thispracticedescribestheuseofthinrigidmetalnotchedgages,alsocalledsteporcombgages,inthemeasurementofwetfilmthicknessoforganiccoatings,suchaspaint,varnish,andlacquer.1.2Notchedgagemeasurementsareneitheraccuratenorsensitive,buttheyareusefulindeterminingapproximatewetfilmthicknessofcoatingsonarticleswheresize(s)andshape(s)prohibittheuseofthemoreprecisemethodsgiveninTestMethodsD1212.1.3Thispracticeisdividedintothefollowingtwoprocedures:1.3.1ProcedureA-Asquareorrectangularrigidmetalgagewithnotchedsidesisusedtomeasurewetfilmthicknessesrangingfrom3to2000m(0.5to80mils1).Suchagageisapplicabletocoatingsonflatsubstratesandtocoatingsonarticlesofvarioussizesandcomplexshapeswhereitispossibletogettheendtabsofthegagetorestinthesameplaneonthesubstrate.1.3.2ProcedureB-Acircularthinrigidmetalnotchedgageisusedtomeasurewetfilmthicknessesrangingfrom25to2500m(1to100mils).Suchagageisapplicabletocoatingsonflatsubstratesandtocoatingsonobjectsofvarioussizesandcomplexshapes.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitations......
【中国标准分类号】:A29;G50
【国际标准分类号】:87_040
【页数】:3P.;A4
【正文语种】: