Designation:D2663−14StandardTestMethodsforCarbonBlack—DispersioninRubber1ThisstandardisissuedunderthefixeddesignationD2663;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthedegreeofdispersionofcarbonblackinrubber.Fourtestmethodsaredescribedasfollows:SectionsTestMethodA—VisualInspection3–11TestMethodB—AgglomerateCount12–22TestMethodC—MicroroughnessMeasurementwithProfilometer23–33TestMethodD—MicroroughnessMeasurementwithIFM34–421.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D3182PracticeforRubber—Materials,Equipment,andPro-ceduresforMixingStandardCompoundsandPreparingStandardVulcanizedSheetsD4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustries2.2ASTMAdjuncts:CarbonBlackDispersionStandards3CarbonBlackDispersionChart4TESTMETHODA—VISUALINSPECTION3.Scope3.1TestMethodAisaqualitativevisualtestmethod.Ratingsaremadeagainstasetofstandardphotographs(Fig.1),3andtheresultsareexpressedonanumericalscale.Thistestmethodcannotbeusedforcompoundsthatcontainfillersotherthancarbonblack.4.SummaryofTestMethod4.1Thecompoundrubberistornorcuttoexposeafreshsurfaceforexaminationbytheeye,aidedpreferablybyahandlensoralow-powerbinocularmicroscope.Thedispersionlevelofthecarbonblackiscomparedagainstaseriesoffivephotographicstandardsandthenratednumericallyfrom1(verylow)to5(high)(seeFig.1).5.SignificanceandUse5.1Visualdispersionratingscorrelatewithcertainimpor-tantphys...
