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【英文标准名称】:StandardTestMethodforDurabilityofSealantsExposedtoContinuousImmersioninLiquids
【原文标准名称】:连续浸液的密封剂寿命的标准试验方法
【标准号】:ASTMC1247-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:粘附
【英文主题词】:adhesion;liquidimmersion;sealant;waterimmersion;Acceleratedaging/testing--sealants;Adhesion--sealants;Durability--sealants;Elevatedtemperaturetests;Liquidsimmersion;Sealants;Substrates;Waterimmersiontesting
【摘要】:Thistestmethoduseselevatedtemperaturetoacceleratethedegradationofasealantanditsadhesiontoasubstrate.Thistestmethodisanacceleratedmethodandwillonlybeapredictoroflong-termdurabilityiftheactualservicetemperatureissignificantlylowerthantheelevatedtesttemperature.Thistestmethodcanbeusedasanindicatoroflongevitybutdirectcorrelationtoactualusewillbedifficultformanyapplications.Thecorrelationofdatafromthistestmethodtoapplicationswherethesealantjointwillhavewetanddrycycleswillbedifficultsince,withsomesealantsonsomesubstrates,adhesionthatislostduringwetperiodsisregainedduringdryperiods.Thistestmethodisperformedinahotliquidandmaybeconsideredanaccelerationofdeteriorationofthesealantorthesealant''sadhesiontoasubstrate.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】:英语