Designation:D3808−01(Reapproved2013)StandardTestMethodforQualitativeDeterminationofAdhesionofAdhesivestoSubstratesbySpotAdhesion1ThisstandardisissuedunderthefixeddesignationD3808;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversasimplequalitativeprocedureforquicklyscreeningwhetheranadhesivewill,underrecom-mendedapplicationconditions,bondtoagivensubstratewithoutactuallymakingbondedassemblies.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D907TerminologyofAdhesivesE171PracticeforConditioningandTestingFlexibleBarrierPackaging3.Terminology3.1Definitions—ManyofthetermsusedinthistestmethodaredefinedinTerminologyD907.3.1.1spotadhesion,n—aqualitativemethodofdeterminingadhesionbyattemptingtoprya“spot”ofcuredadhesivefromasubstrate.4.SummaryofTestMethod4.1Spotsofadhesive(sizecanvary,butgenerallyabout6mm(1⁄4in.)indiameter)areplacedontoasubstrateusingtheapplicationprocedureandcuringconditionsacceptabletobothuserandsupplieroftheadhesive.4.2Thesubstratepreparationandenvironmentalexposureofthespotofadhesiveaftercureorsettingcanbevariedasdesired.4.3Thedeterminationofwhetheranadhesivebondstothesubstrateismadebysimplytryingtoprythespotofadhesivefromthesubstrate.4.4Themodeoffailureisreadilyevidentbyexaminingwhetherthebondseparatedadhesivelyorcohesively,eitherintheadhesiveorsubstrate.5.SignificanceandUse5.1Thisisaquick,simple,andinexpensivetestmethodforqualitativelydetermining,withouttheneedtopreparebondedtestspecime...
