Designation:D5099−08(Reapproved2017)StandardTestMethodsforRubber—MeasurementofProcessingPropertiesUsingCapillaryRheometry1ThisstandardisissuedunderthefixeddesignationD5099;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodsdescribehowcapillaryrheometrymaybeusedtomeasuretherheologicalcharacteristicsofrubber(raworcompounded).Twomethodsareaddressed:MethodA—usingapistontypecapillaryrheometer,andMethodB—usingascrewextrusiontypecapillaryrheometer.Thetwomethodshaveimportantdifferences,asoutlinedin7–10and11–14,respectively.1.2Thesetestmethodscovertheuseofacapillaryrheom-eterforthemeasurementoftheflowpropertiesofthermoplas-ticelastomers,unvulcanizedrubber,andrubbercompounds.Thesematerialpropertiesarerelatedtofactoryprocessing.1.3Sincepistontypecapillaryrheometersimpartonlyasmallamountofshearingenergytothesample,thesemeasure-mentsdirectlyrelatetothestateofthecompoundatthetimeofsampling.Pistontypecapillaryrheometermeasurementswillusuallydifferfrommeasurementswithascrewextrusiontyperheometer,whichimpartsshearingenergyjustbeforetherheologicalmeasurement.1.4Capillaryrheometermeasurementsforplasticsarede-scribedinTestMethodD3835.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTra...
