Designation:D5099−08(Reapproved2013)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-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1349PracticeforRubber—StandardConditionsforTest-ingD1418PracticeforRubberandRubberLatices—NomenclatureD1485PracticeforRubberfromNaturalSources—SamplingandSamplePreparationD3182PracticeforRubber—Materials,Equipment,andPro-ceduresforMixingSt...
