Designation:D7149−05(Reapproved2021)StandardPracticeforDeterminingtheFreezeThawStabilityofAdhesives1ThisstandardisissuedunderthefixeddesignationD7149;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedeterminestheabilityofanadhesivetowithstandrepeatedfreezingandthawingcyclesatspecifictemperatureswithoutanysignificantchangeinphysicalprop-erties.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D907TerminologyofAdhesivesD1084TestMethodsforViscosityofAdhesivesD1293TestMethodsforpHofWaterD2556TestMethodforApparentViscosityofAdhesivesHavingShear-Rate-DependentFlowPropertiesUsingRo-tationalViscometry3.Terminology3.1Definitions:3.1.1ManyofthetermsutilizedinthispracticearedefinedinTerminologyD907.4.SignificanceandUse4.1Thispracticewillprovideaprocedurefordeterminingthestabilityofanadhesivetowithstandfiverepeatedcycles,orasotherwisespecified,offreezingandthawingataspecifictemperature.4.2Thispracticewillallowtheusertodeterminewhetherornottheadhesivecanbeappropriatelyappliedaftercyclingoffreezingandthawing.4.3Thispracticewillidentifyanysignificantchangesinthemanufacturedviscosityoftheproductafterfivecycles,orasotherwisespeci...
