【英文标准名称】:StandardPracticeforFluorescentUVExposureofPlastics
【原文标准名称】:塑料荧光紫外线曝光的标准实施规程
【标准号】:ASTMD4329-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:塑料;使用说明;环境试验;工艺;试验设备
【英文主题词】:degradation;exposure;fluorescentUV;lightexposure;ultraviolet
【摘要】:Theabilityofaplasticmaterialtoresistdeteriorationofitselectrical,mechanical,andopticalpropertiescausedbyexposuretolight,heat,andwatercanbeverysignificantformanyapplications.Thispracticeisintendedtoinducepropertychangesassociatedwithend-useconditions,includingtheeffectsofsunlight,moisture,andheat.Theexposureusedinthispracticeisnotintendedtosimulatethedeteriorationcausedbylocalizedweatherphenomena,suchas,atmosphericpollution,biologicalattack,andsaltwaterexposure.(Warning8212;Variationinresultsmaybeexpectedwhenoperatingconditionsarevariedwithintheacceptedlimitsofthispractice.Therefore,noreferencetotheuseofthispracticeshouldbemadeunlessaccompaniedbyareportpreparedinaccordancewithSection8thatdescribesthespecificoperatingconditionsused.RefertoPracticeG151fordetailedinformationonthecaveatsapplicabletouseofresultsobtainedinaccordancewiththispractice.)Note28212;Additionalinformationonsourcesofvariabilityandonstrategiesforaddressingvariabilityinthedesign,execution,anddataanalysisoflaboratory-acceleratedexposuretestsisfoundinGuideG141.Reproducibilityoftestresultsbetweenlaboratorieshasbeenshowntobegoodwhenthestabilityofmaterialsisevaluatedintermsofperformancerankingcomparedtoothermaterialsortoacontrol.5,6Therefore,exposureofasimilarmaterialofknownperformance(acontrol)atthesametimeasthetestmaterialsisstronglyrecommended.Itisrecommendedthatatleastthreereplicatesofeachmaterialbeexposedtoallowforstatisticalevaluationofresults.TestresultswilldependuponthecarethatistakentooperatetheequipmentinaccordancewithPracticeG154.Significantfactorsincluderegulationoflinevoltage,temperatureoftheroominwhichthedeviceoperates,temperaturecontrol,andconditionandageofthelamp.1.1ThispracticecoversspecificproceduresandtestconditionsthatareapplicableforfluorescentUVexposureofplasticsconductedinaccordancewithPracticesG151andG154.Thispracticealsocoversthepreparationoftestspecimens,thetestconditionsbestsuitedforplastics,andtheevaluationoftestresults.1.2ThevaluesstatedinSIunitsareberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThispracticeistechnicallysimilartoISO4892-3.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:6P.;A4
【正文语种】: