Designation:D3056−14(Reapproved2018)StandardTestMethodforGelTimeofSolventlessVarnishes1ThisstandardisissuedunderthefixeddesignationD3056;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofthegeltimeofasolventlessvarnishmixedwithacatalyst,ifrequired,andexposedtoelevatedtemperature.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Foraspecificprecautionstatement,seeSection6.NOTE1—AlthoughthisstandardandIEC60455–2differinapproachordetail,dataobtainedusingeitheraretechnicallyequivalent.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1711TerminologyRelatingtoElectricalInsulation2.2IECStandard:3IEC60455–2ResinBasedReactiveCompoundsUsedforElectricalInsulation—Part2:MethodsofTest3.Terminology3.1Definitions:3.1.1geltime,n—ofsolventlessvarnish,thetimerequiredataspecifiedtemperatureforasolventlessvarnishtobetransformedfromaliquidstatetoagelasmeasuredwithasuitablegeltimeapparatus.3.1.2SeeTerminologyD1711fordefinitionsofothertermsrelatingtoelectricalinsulation.4.SignificanceandUse4.1Geltimeisimportantindeterminingbatchuniformityandsomeprocessingcharacteristics.Itisindicati...
