【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】:ASTMD1014-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:试验;钢;涂料;涂漆
【英文主题词】:coating;durability;exposure;metal;paint;powdercoating;weathering
【摘要】:Theproceduresdescribedinthispracticeareintendedtoaidinevaluatingtheperformanceofcoatingsonvariousmetalpanelsincludingeitherneworpreviouslyrustedsteel.Therelativedurabilityofpaintsinoutdoorexposurescanbeverydifferentdependingonthelocationoftheexposurebecauseofdifferencesinsolarradiation,timeofwetness,temperature,pollutants,andotherfactors.Therefore,itcannotbeassumedthatresultsfromoneexposureinasinglelocationwillbeusefulfordeterminingrelativedurabilityinadifferentlocation.Exposuresinseverallocationswithdifferentclimateswhichrepresentabroadrangeofanticipatedserviceconditionsarerecommended.4.2.1Becauseofyear-to-yearclimatologicalvariations,resultsfromasingleexposuretestcannotbeusedtopredicttheabsoluterateatwhichamaterialdegrades.Severalyearsofrepeatexposuresareneededtogetanx201C;averagex201D;testresultforagivenlocation.4.2.2Solarradiationvariesconsiderablyasfunctionoftimeofyear.Thiscancauselargedifferencesintheapparentrateofdegradationinmanypolymers.Comparingresultsformaterialsexposedforshortperiods(lessthanoneyear)isnotrecommendedunlessmaterialsareexposedatthesametimeinthesamelocation.TheSignificanceandUseinPracticeG7addressesmanyvariablestobeconsideredinexteriorexposuretests.GuideG141providesmoreinformationonvariabilityinweatheringtesting.1.1Thispracticecoversprocedurestobefollowedfordirectexposureofexteriorpaintsandcoatingstotheenvironmentwhenappliedtometalsurfaces.Whenoriginatorsofaweatheringtesthavetheactualexposureconductedbyaseparateagency,thespecificconditionsfortheexposureoftestandcontrolspecimensshouldbeclearlydefinedandmutuallyagreeduponbetweenallparties.1.2Experienceindicatesthatthemetalusedasatestsubstratehasasignificanteffectuponweatheringresults.Thepurposeofthispracticeistodefinespecificsteelandothermetalsurfacestobeusedfortestinginordertominimizethissourceofvariability.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G50;A29
【国际标准分类号】:87_040
【页数】:5P.;A4
【正文语种】: