ASTM D1014-2009 金属基质涂料和涂层的室外暴露的标准试验规程

作者:标准资料网 时间:2024-05-14 15:07:45  浏览:8597   来源:标准资料网

【英文标准名称】:StandardPracticeforConductingExteriorExposureTestsofPaintsandCoatingsonMetalSubstrates
【原文标准名称】:金属基质涂料和涂层的室外暴露的标准试验规程
【标准号】:ASTMD1014-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:coating;durability;exposure;metal;paint;powdercoating;weathering;Outdoorweathering;Substrates;Exteriorexposuretests
【摘要】:Theproceduresdescribedinthispracticeareintendedtoaidinevaluatingtheperformanceofcoatingsonvariousmetalpanelsincludingeitherneworrustedsteel.Therelativedurabilityofpaintsinoutdoorexposurescanbeverydifferentdependingonthelocationoftheexposurebecauseofdifferencesinsolarradiation,timeofwetness,temperature,pollutants,andotherfactors.Therefore,itcannotbeassumedthatresultsfromoneexposureinasinglelocationwillbeusefulfordeterminingrelativedurabilityinadifferentlocation.Exposuresinseverallocationswithdifferentclimateswhichrepresentabroadrangeofanticipatedserviceconditionsarerecommended.Becauseofyear-to-yearclimatologicalvariations,resultsfromasingleexposuretestcannotbeusedtopredicttheabsoluterateatwhichamaterialdegrades.Severalyearsofrepeatexposuresareneededtogetanx201C;averagex201D;testresultforagivenlocation.Solarradiationvariesconsiderablyasfunctionoftimeofyear.Thiscancauselargedifferencesintheapparentrateofdegradationinmanypolymers.Comparingresultsformaterialsexposedforshortperiods(lessthanoneyear)isnotrecommendedunlessmaterialsareexposedatthesametimeinthesamelocation.TheSignificanceandUseinPracticeG7addressesmanyvariablestobeconsideredinexteriorexposuretests.GuideG141providesmoreinformationonvariabilityinweatheringtesting.1.1Thispracticecoversprocedurestobefollowedfordirectexposureofexteriorpaintsandcoatingstotheenvironmentwhenappliedtometalsurfaces.Whenoriginatorsofaweatheringtesthavetheactualexposureconductedbyaseparateagency,thespecificconditionsfortheexposureoftestandcontrolspecimensshouldbeclearlydefinedandmutuallyagreeduponbetweenallparties.1.2Experienceindicatesthatthemetalusedasatestsubstratehasasignificanteffectuponweatheringresults.Thepurposeofthispracticeistodefinespecificsteelandothermetalsurfacestobeusedfortestinginordertominimizethissourceofvariability.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesisareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29;G50
【国际标准分类号】:87_040
【页数】:5P.;A4
【正文语种】:英语