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【英文标准名称】:StandardPracticeforTestingWaterResistanceofCoatingsin100%RelativeHumidity
【原文标准名称】:在100%相对湿度条件下测定涂层耐水性能的标准实施规程
【标准号】:ASTMD2247-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D01.27
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:adhesion;blistering;humidity;resistance-water;rust;Adhesion--paints/relatedcoatings/materials;Blistering;Coatings(paint/relatedapplications);Exposuretests--organiccoatings;Exteriorcoatings;Industrialcoatings/applications;Interiorpaints
【摘要】:Watercancausethedegradationofcoatings,soknowledgeofhowacoatingresistswaterishelpfulforassessinghowitwillperforminactualservice.Failureintestsat100%relativehumiditymaybecausedbyanumberoffactorsincludingadeficiencyinthecoatingitself,contaminationofthesubstrate,orinadequatesurfacepreparation.Thispracticeisthereforeusefulforevaluatingcoatingsaloneorcompletecoatingsystems.Testsat100%relativehumidityareusedforspecificationacceptance,qualitycontrol,andresearchanddevelopmentforcoatingsandsubstratetreatments.Sometestsareusedforapassorfaildeterminationatanarbitrarytime.Acoatingsystemisconsideredtopassifthereisnoevidenceofwater-relatedfailureafteraperiodoftime.Othertestsareusedtomonitordegreeoffailureasafunctionofexposuretime.Arbitrarypass/faillevelsandthetestdurationsrequiredaretypicallysetinothermaterialspecifictestmethods.Usersofthispracticealonemayusetheknownperformanceofthecontrolstosettestendpoints.Anotheroptionistocontinuethetestuntilallspecimenshavefailed,andusethetimetoreachfailureasawaytodifferentiateperformance.Resultsobtainedfromtheuseof100%humiditytestsinaccordancewiththispracticeshouldnotberepresentedasbeingequivalenttoaperiodofexposuretowaterinthenaturalenvironment,untilthedegreeofquantitativecorrelationhasbeenestablishedforthecoatingorcoatingsystem.Thetestchambercanbeasmalllaboratorycabinetoraroomlargeenoughtoholdanautomobileoratruck.Someautomobilemanufacturerstestcompletedvehiclesinroomsmaintainedat100%relativehumidity.1.1Thispracticecoversthebasicprinciplesandoperatingproceduresfortestingwaterresistanceofcoatingsbyexposingcoatedspecimensinanatmospheremaintainedat100%relativehumiditysothatcondensationformsonthetestspecimens.1.2Thispracticeusesthetechniqueofcreatingaslighttemperaturedifferentialwithintheexposureareatoformcondensationonthecoatedspecimens.Asthewarmersaturatedairpassesthecoolerspecimens,waterisdepositedontothespecimensintheformofcondensation.1.3Thispracticeplacestheentirespecimenintheexposureareaallowingcondensationtoformonallsurfaces.Thismakesthispracticesuitableforflatpanelsaswellaslargeor3Dobjects.Thispracticediffersfromothermethodswherecondensationisonlyformedonthefrontcoatingsurface,butthebacksurfaceisoutsidetheexposurearea.Othertestsmayalsodepositwaterdropletsonthesurfacebutwherethesourceisnotfromcondensation.Note18212;AlternativepracticesfortestingthewaterresistanceofcoatingsincludePracticesD870,D1735,andD4585.1.4Thispracticeislimitedtothemethodsofobtaining,measuring,andcontrollingtheconditionsandproceduresoftestsconductedin100%relativehumidity.Itdoesnotspecifyspecimenpreparation,orevaluationofresults.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:87_040
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Lightningprotectionsystemcomponents(LPSC)-Part5:requirementsforearthelectrodeinspectionhousingsandearthelectrodeseals.
【原文标准名称】:雷电防护系统元件(LPSC).第5部分:接地电极检验外壳和接地电极密封件用要求
【标准号】:NFC17-153-5-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-11-01
【实施或试行日期】:2011-11-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Bins;Clamps;Classification;Components;Definitions;Earthconductors;Earthelectrodes;Earthing;Earthinginstallations;Electricalcomponents;Electricalengineering;Electricalinsulation;Electricalproperties;Electromagneticcompatibility;EMC;Enclosures;Lightning;Lightningprotection;Lightningstroke;Marking;Measuringpoints;Metalprotection;Metals;Non-metals;Potentialequalizingbar;Protectiveearthing;Protectiveequipment;Revision;Safetycomponents;Safetymeasures;Safetyrequirements;Seals;Specification(approval);Testing
【摘要】:
【中国标准分类号】:K49
【国际标准分类号】:91_120_40
【页数】:17P;A4
【正文语种】:其他