ASTM C794-2010 弹性封缝料的抗撕裂粘附力的标准试验方法

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【英文标准名称】:StandardTestMethodforAdhesion-in-PeelofElastomericJointSealants
【原文标准名称】:弹性封缝料的抗撕裂粘附力的标准试验方法
【标准号】:ASTMC794-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:合成橡胶接缝料;水浸法;剥离强度试验
【英文主题词】:elastomericjointsealant;waterimmersion;Peelstrengthtests
【摘要】:Therearedifferencesinopinionamongthoseconcernedwithsealanttechnologywhetherornotthisadhesion-in-peeltestsimulatesthetypeofstrainande-tensilestressesencounteredbyasealantinnormaluse.Nevertheless,thistestprovidesavaluablemeasurementoftheabilityofthecuredsealanttomaintainabondtothesubstrateunderseverepeelconditions.Manysealantmanufacturersutilizetheadhesion-in-peeltestfordeterminingtheadhesivecharacteristicsofsealant/primercombinationswithunusualorproprietarysubstrates.Thistestisespeciallyusefulforqualitymeasurementscomparingbatchesofthesamesealantrelativetoadhesionorforstudyingadhesionofagivensealanttoavarietyofsubstrates.Thistestmethodaloneisnotappropriateforcomparingtheoverallperformanceofdifferentsealantsinagivenapplication.Theadhesiveforcethatdeterminesifagivensealantisusefulinagivenapplicationalsodependsonthemodulusofelasticityandthedegreetowhichthesealantwillbestrained.Thistest,asitexists,doesnotconsiderthemodulusofelasticity,noramountofstressthatwillbeproducedbyagivenstraininanactualsealantinamovingjoint.Noknowncorrelationsaregiventorelateandapplymodulusvaluestothepeelvalues.Thistestrequiresthattheresultsindicatewhetherthefailuremodeisprimarilyadhesiveorcohesive.Itisimportanttonotethatacohesivefailureisnotnecessarilybetterthananadhesivefailure,iftheadhesivevalueissufficientfortheapplication.Havingadhesivefailureallowsonetostudythechangeofadhesionwithtimeandwiththevariousstressconditions.1.1Thistestmethodcoversalaboratoryprocedurefordeterminingthestrengthandcharacteristicsofthepeelpropertiesofacured-in-placeelastomericjointsealant,single-ormulticomponent,foruseinbuildingconstruction.1.2Thevaluesstatedinmetric(SI)unitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationonly.1.3Thecommitteewithjurisdictionoverthisstandardisnotawareofanycomparablestandardspublishedbyotherorganizations.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:83_060;91_100_50
【页数】:7P.;A4
【正文语种】: