Designation:D1917−03(Reapproved2022)StandardTestMethodsforRubberProperty—ShrinkageofRawandCompoundedHot-PolymerizedStyrene-ButadieneRubber(SBR)1ThisstandardisissuedunderthefixeddesignationD1917;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thesetestmethodscoverthedeterminationofmillshrinkageofhot-polymerizedstyrene-butadienerubbers(SBR)andtheircompounds.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3182PracticeforRubber—Materials,Equipment,andPro-ceduresforMixingStandardCompoundsandPreparingStandardVulcanizedSheetsD3896PracticeforRubberFromSyntheticSources—SamplingD4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustriesE145SpecificationforGravity-ConvectionandForced-VentilationOvens3.SummaryofTestMethods3.1Aspecimenofraworcompoundedrubberispreparedonastandardlaboratorymill,itsdimensionsaremeasuredorcontrolledbyacuttingtechnique,itisheatagedinacirculatingovenat100°C,cooledatroomtemperature,andthedimen-sionsareagainmeasured.Thelinearpercentshrinkageofthespecimeniscalculated.3.2Thefollowingtestmethodsa...
