【英文标准名称】:StandardTestMethodforDurabilityofSealantsExposedtoContinuousImmersioninLiquids
【原文标准名称】:连续浸液的密封剂寿命标准试验方法
【标准号】:ASTMC1247-1998(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】:C24.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:adhesion;liquidimmersion;sealant;waterimmersion
【摘要】:Thistestmethoduseselevatedtemperaturetoacceleratethedegradationofasealantanditsadhesiontoasubstrate.Thistestmethodisanacceleratedmethodandwillonlybeapredictoroflong-termdurabilityiftheactualservicetemperatureissignificantlylowerthantheelevatedtesttemperature.Thistestmethodcanbeusedasanindicatoroflongevitybutdirectcorrelationtoactualusewillbedifficultformanyapplications.Thecorrelationofdatafromthistestmethodtoapplicationswherethesealantjointwillhavewetanddrycycleswillbedifficultsince,withsomesealantsonsomesubstrates,adhesionthatislostduringwetperiodsisregainedduringdryperiods.Thistestmethodisperformedinahotliquidandmaybeconsideredanaccelerationofdeteriorationofthesealantorthesealant’adhesiontoasubstrate.Comparedtohowthesealantwillbeusedinsomeapplications,insomecases,thistestmaybelessseverethantheactualapplication.Thebenefitfromtheuseofthistestmethodwilldependonthecomparisonoftheconditionsofthistesttotheactualconditionsofuse(temperature,duration,natureofsubstrate,compositionoftheliquid).Todeterminetheabilityofasealanttoperforminagivenapplication;modificationofthisprocedurewilloftenberequiredandispermissible,asmutuallyagreeduponbypurchaserandseller.1.1Thistestmethodcoversalaboratoryprocedurethatassistsindeterminingthedurabilityofasealantanditsadhesiontoasubstratewhilecontinuouslyimmersedinaliquid.Thistestmethodteststheinfluenceofaliquidonthesealantanditsadhesiontoasubstrate.Itdoesnottesttheaddedinfluenceofconstantstressfromhydrostaticpressurethatisoftenpresentwithsealantsusedinsubmergedandbelow-gradeapplications,nordoesittesttheaddedinfluenceofstressfromjointmovementwhileimmersed.Thistestmethodalsodoesnot(initsstandardform)testtheaddedinfluenceofacidsorcausticsorothermaterialsthatmaybeintheliquid,inmanyapplications.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundgiveninparenthesesareprovidedforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Fasteningclamps;clampswithtongueandlugs;technicaldeliveryconditions
【原文标准名称】:带夹铕和卡头的夹持卡圈.交货技术条件
【标准号】:DIN3016-4-1993
【标准状态】:作废
【国别】:德国
【发布日期】:1993-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;鱼尾板;作标记;夹持装置;夹持装置;管道;设计;夹件;紧固夹件;夹件(机械);规范(认可);表面处理;验收规范;尺寸;材料;包装件;交货条件;紧固夹具
【英文主题词】:acceptancespecification;specification(approval);holdingdevices;marking;dimensions;fishplates;holdings;clamps;deliveryconditions;clamps(mechanical);fasteninglugclamps;surfacetreatment;materials;
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:21_060_70
【页数】:2P;A4
【正文语种】:德语