ISO 11507 色漆和清漆 涂层暴露于人工风化暴露于荧光紫外灯和水

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ISO11507色漆和清漆涂层暴露于人工风化暴露于荧光紫外灯和水INTERNATIONALSTANDARDPaintsandvarnishes--Exposureofcoatingstoartificialweathering--ExposuretofluorescentUVlampsandwaterPeinturesetvernis--Expositiondesrevetementsauvieillissementartificiel--ExpositionauraynonnementdelampesafluorescenceUVetaleauForewordISO（theinternationalOrganizatforStandardization）isaworldwidefederationofnationalstandardsbodies（ISOmemberbodies）.TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission（IEC）onallmattersofelectrotechnicalstandardization.InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part2.ThemaintaskoftechnicalcommitteesistoprepareInternationalStandards.DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesorvoting.PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastionavote.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ISO11507waspreparedbyTechnicalCommitteeISO/TC35,Paintsandvarnishes,SubcommitteeSC9,Generaltestmethodsforpaintsandvarnishes.Thissecondeditioncancelsandreplacesthefirstedition（ISO11507:1997）,whichhasbeentechnicallyrevised.Themainchangesare:--thedataonthelamps（tablesin5.1.2）havebeenharmonizedwiththedatagiveninISO4892-3;--thepurityofthewaterforwettingthetestpanelshasbeenchangedfromgrade2tograde3--conditioningofthecoatedtestpanelspriortotestinghasbeendeleted.IntroductionCoatingsfrompaints,varnishesandsimilarmaterialsareweatheredinthelaboratory,inordertosimulateageingprocessesoccurringduringnaturalweathering.Generally,validcorrelationsbetweenageingduringartificialandnaturalweatheringcannotbeexpectedbecauseofthelargenumberofinfluencingfactors.Certainrelationshipscanonlybeexpectediftheeffectoftheimportantparameters（spectraldistributionoftheirradianceintheirphotochemicallyrelevantrange,temperatureofthespecimen,typeofwetting,wettingcyclerelativehumidity）onthecoatingisknown.However,unlikenaturalweathering,testinginthelaboratoryiscarriedouttakingintoconsiderationalimitednumberofvariableswhichcanbecontrolledandthereforetheresultsaremorereproducible.
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