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【英文标准名称】:StandardPracticeforExposureofAdhesiveSpecimenstoArtificialLight
【原文标准名称】:胶粘剂试样在人造光中暴露试验的标准实施规程
【标准号】:ASTMD904-1999(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】:D14.40
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:adhesive;artificiallight;ultravioletlight;Adhesivejoints--exposure;Exposuretests--carbon-arcapparatus;Adhesives;Artificiallight;Carbon-arclightexposure;Lightexposure;Naturallight;Ultraviolet(UV)analysis
【摘要】:ThispracticeisfordeterminingtheeffectsofUVlight,orUVlightandwater,onadhesivebondedjointsundercontrolledbutartificialconditions.TheresultsofthispracticecanbeusedforcomparingtherelativedurabilityofseveraladhesivesinaspecificlaboratoryUVexposure.Thispracticeisnotfordeterminingaforecastofthelifeofanadhesivebondinservice.Itisonlyfordeterminingtherelativedurabilityofdifferentadhesivescomparedtoeachother.Theresultsobtainedmayvarybetweenthedifferentlightsources(xenon-arcorfluorescentUV),becauseofthedifferentspectral-irradianceofthelamps.Adhesivesshouldnotbecomparedtoeachotherbasedontheirperformanceunderdifferenttypesoflightsources.Theresultsobtainedmayvarywhenoperationconditionsarevariedwithinthelimitsofagivenmethod.Theresultsmayalsovarywhenexposuresareperformedoninstrumentsmadebydifferentmanufacturers.Comparisonsbetweenmaterialsmustonlybemadewhentheyaretestedatthesametimeinthesameinstrument.Besuretoaccuratelyreporttheoperatingconditions.ThetypeandUVtransmittancecharacteristicsofthetransparentadherendusedcanhaveasignificanteffectontherateandtypeofdegradationoftheadhesivesbeingtested.Comparisonsbetweenadhesivesmustonlybemadewhentestedontransparentadherendsofthesametype(preferablythesamelot)withthesameUVtransmission.Thispracticeisnotfordeterminingtheeffectsofatmosphericpollutants,biologicalorganisms,salt,orfreeze/thawcycles.1.1Thispracticecoversthebasicprinciplesandoperatingproceduresforultraviolet(UV)lightaging(withorwithoutwater)ofadhesivebondedjointshavingatleastoneglassortransparentadherend,usingfluorescentUV(seeMethodA)orxenon-arclightsources(seeMethodB).1.2Thispracticeislimitedtotheapparatusforobtaining,measuring,andcontrollingtheagingconditions,andtotheproceduresforexposure.Samplepreparation,strength,testconditions,andevaluationoftheresultsaredescribedinotherASTMtestmethodsorspecifications.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G38
【国际标准分类号】:83_180
【页数】:3P.;A4
【正文语种】:英语