ASTM D3632-1998(2004) 用氧压法加速粘结接头老化的试验方法

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【英文标准名称】:StandardTestMethodforAcceleratedAgingofAdhesiveJointsbytheOxygen-PressureMethod
【原文标准名称】:用氧压法加速粘结接头老化的试验方法
【标准号】:ASTMD3632-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D14.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:工艺;胶粘连接;老化;胶粘剂
【英文主题词】:acceleratedaging;lapshear;oxygenpressure;shearstrength
【摘要】:Thistestmethodisusefultotheadhesivemanufacturerinresearchanddevelopmentorinmanufacturingcontrol.Theresultsarealsousedforspecificationacceptanceorasaguideinadhesiveselection.Theprovisionsfortestingbondedspecimensaswellasfreefilmsaremadefortwopurposes.First,itispossibleforaninteractiontooccurbetweenoxygenandchemicalsordegradationproductsthatmayaffectthedegradationofthebondedjointsstrength.Second,someincreaseinstrengthduetooxidativecrosslinkingmaynotbedetrimentalinabondedassemblyandinfactmaybebeneficial.Adhesivesofthisbehaviorarenotsatisfactorilytestedbyafilmflexibilitytest.Someusersofthistestmethodwillbemostinterestedintheperformanceofthebondedjoint;somewillbemostinterestedintheperformanceoftheadhesive.Inthelattercase,itisimportanttonotethatthetruevariance(errormeansquare)ofthestrengthoftheadhesivemaybeobscuredwhenthetestedcontrolspecimensorthetestedagedspecimensshowwoodfailure.ConflictofProcedure8212;Iftheproceduresofthistestmethodconflictwiththoseofdetailedproductspecificationsormanufacturerrsquo;useinstructionsforaparticularmaterial,thenusethelatter.1.1Thistestmethoddescribeshowtoestimatetherelativeresistancetodeteriorationofadhesivefilmsandadhesive-bondedjointsplacedinahigh-pressureoxygenenvironment.Theinstructionsincludebothwood-to-woodandwood-to-metaljointsaswellasfreefilmofadhesive.Theeffectsofchemicalssuchasfireretardants,preservatives,orwoodextractives,canbeevaluatedbyusingmaterialscontainingthesechemicalsforadherends.1.2Thistestmethodisprimarilyintendedforelastomer-basedconstructionadhesives,butisalsoapplicabletoothertypesofadhesivesthatmaybesusceptibletooxygendegradation.Thisacceleratedtestdoesnotcorrelateexactlywiththenaturalagingoftheadhesivebecauseofthevariedconditionsofnaturalagingandtheabsenceoffactorssuchasmoistureandstress.Theresultsofthisacceleratedtestareonlycomparativeandmustbeevaluatedagainsttheperformanceofbondedjointswhosenaturalandacceleratedagingcharacteristicsareknown.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G38
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】: