【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】:


【英文标准名称】:Informationtechnology;computergraphics;interfacingtechniquesfordialogueswithgraphicaldevices(CGI);datastreambinding;part1:characterencoding
【原文标准名称】:信息技术.计算机图形.与图形设备会话的接口技术(CGI).数据流联编.第1部分:字符编码
【标准号】:ISO/IEC9637-1-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:接口(数据处理);信息交换;字符表示;信息交流;数据处理;信息技术;计算机制图;译码器;界面;编码
【英文主题词】:Computergraphics;Dataprocessing;Encoders;Encoding;Informationexchange;Informationinterchange;Informationtechnology;Interfaces;Interfaces(dataprocessing);Representationofcharacters
【摘要】:Specifiesacharacterencodingofthecomputergraphicsinterface.ForeachofthefunctionsspecifiedinISO/IEC9636anencodingisspecified.Theencodingprovidesahighlycompactrepresentationofthedata,suitableforapplicationsthatrequirethedatatobeofminimumsizeandsuitablefortransmissionwithcharacter-orientedtransmissionservices.
【中国标准分类号】:L81
【国际标准分类号】:35_140
【页数】:63P.;A4
【正文语种】:英语