作者:标准资料网 时间:2024-05-12 10:33:45   浏览:9972   来源:标准资料网

【英文标准名称】:StandardPracticeforXenon-ArcExposureofPlasticsIntendedforOutdoorApplications
【原文标准名称】:户外用塑料的氙弧型曝光装置的标准实施规程
【标准号】:ASTMD2565-1999(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:D20.50
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:degradation;exposure;lightexposure;ultraviolet;xenon-arc;Degradation--plastics;Exposuretests--plastics;Lightexposure--plastics;Ultraviolet(UV)analysis--plastics;Waterexposureapparatus;Xenon-arclightexposure
【摘要】:Theabilityofaplasticmaterialtoresistdeteriorationofitselectrical,mechanical,andopticalpropertiescausedbyexposuretolight,heat,andwatercanbeverysignificantformanyapplications.Thispracticeisintendedtoinducepropertychangesassociatedwithend-useconditions,includingtheeffectsofdaylight,moisture,andheat.Theexposureusedinthispracticeisnotintendedtosimulatethedeteriorationcausedbylocalizedweatherphenomena,suchas,atmosphericpollution,biologicalattack,andsaltwaterexposure.Cautionx2014;Variationsinresultsmaybeexpectedwhenoperatingconditionsarevariedwithintheacceptedlimitsofthispractice.Therefore,allreferencestotheuseofthispracticemustbeaccompaniedbyareportpreparedinaccordancewithSection9thatdescribesthespecificoperatingconditionsused.RefertoPracticeG151fordetailedinformationonthecaveatsapplicabletouseofresultsobtainedinaccordancewiththispractice.Note38212;Additionalinformationonsourcesofvariabilityandonstrategiesforaddressingvariabilityinthedesign,execution,anddataanalysisoflaboratory-acceleratedexposuretestsisfoundinGuideG141.Reproducibilityoftestresultsbetweenlaboratorieshasbeenshowntobegoodwhenthestabilityofmaterialsisevaluatedintermsofperformancerankingcomparedtoothermaterialsortoacontrol.,Therefore,exposureofasimilarmaterialofknownperformance(acontrol)atthesametimeasthetestmaterialsisstronglyrecommended.Itisrecommendedthatatleastthreereplicatesofeachmaterialbeexposedtoallowforstatisticalevaluationofresults.TestresultswilldependuponthecarethatistakentooperatetheequipmentinaccordancewithPracticeG155.Significantfactorsincluderegulationoflinevoltage,freedomfromsaltsorotherdepositsfromwater,temperatureandhumiditycontrol,andconditionandageoftheburnerandfilters.1.1Thispracticecoversspecificproceduresandtestconditionsthatareapplicableforxenon-arcexposureofplasticsconductedinaccordancewithPracticesG151andG155.Thispracticealsocoversthepreparationoftestspecimens,thetestconditionsbestsuitedforplastics,andtheevaluationoftestresults.Note18212;Previousversionsofthispracticereferencedxenon-arcdevicesdescribedinPracticeG26,whichdescribedveryspecificequipmentdesigns.PracticeG26isbeingreplacedbyPracticeG151,whichdescribesperformancecriteriaforallexposuredevicesthatuselaboratorylightsourcesandbyPracticeG155,whichgivesrequirementsforexposingnonmetallicmaterialsinxenon-arcdevices.PracticeG26willbeballotedforwithdrawalbeforeDecember2000.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThispracticeistechnicallyequivalenttoISO4892-2.
【中国标准分类号】:G31
【国际标准分类号】:83_140_01
【页数】:4P.;A4
【正文语种】:英语