ASTM_D_3191_-_10_2020.pdf

Designation:D319110(Reapproved 2020)Standard Test Methods forCarbon Black in SBR(Styrene-Butadiene Rubber)Recipeand Evaluation Procedures1This standard is issued under the fixed designation D3191;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the standard materials,testformula,mixing procedure,and test methods for the evaluationand production control of carbon blacks in styrene butadienerubber(SBR).1.2 The values stated in SI units are to be regarded as thestandard.The values in parentheses are for information only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD1646 TestMethodsforRubberViscosity,StressRelaxation,andPre-VulcanizationCharacteristics(Mooney Viscometer)D1799 Practice for Carbon BlackSampling PackagedShipmentsD1900 Practice for Carbon BlackSampling Bulk Ship-mentsD2084 Test Method for Rubber PropertyVulcanizationUsing Oscillating Disk Cure MeterD3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsD3674 Test Method for Carbon BlackRelative ExtrusionMass(Withdrawn 1999)3D4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD5289 Test Method for Rubber PropertyVulcanizationUsing Rotorless Cure MetersE145 Specification for Gravity-Convection and Forced-Ventilation Ovens3.Significance and Use3.1 The major portion of carbon black consumed by therubber industry is used to improve the physical properties,lifeexpectancy,and utility of rubber products.These test methodsprovide an SBR recipe and directions for evaluating all types ofcarbon black intended for use in rubber products.Otherprocedures are available elsewhere in the ASTM standards forthe evaluation of carbon black itself.3.2 These test methods may be used to characterize carbonblack in terms of specific properties of the standard compound.These test methods are useful for the quality assurance ofcarbon black production.They may also be used for thepreparation of reference compounds,to confirm the day-to-dayreliability of testing operations used in the rubber industry,forthe evaluation of experimental compounds,and quality controlof production compounds.1These test methods are under the jurisdiction of ASTM Committee D24 onCarbon Black and are the direct responsibility of Subcommittee D24.71 on CarbonBlack Testing in Rubber.Current edition approved June 1,2020.Published July 2020.Originally approvedin 1973.Last previous edition approved in 2014 as D3191 10(2014).DOI:10.1520/D3191-10R20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.14.Standard Test Formula4.1 Standard Formula:MaterialIRMANo.Quantity,parts bymassSBR-1500.100.00Zinc oxideB,C913.00SulfurB,C311.75Stearic acidB,C211.00Carbon black.50.00TBBSC,D.1.00TotalBatch factor:E156.75AIRM 91 is available from G.H.Chemicals,Ltd.,1550 Brouillette St.,P.O.Box456,St.Hyacinthe Quebec Canada,J2S 7B8.IRM 21 and IRM 31 are availablefrom Akron Rubber Development Lab,2887 Gilchrist Road,Akron,OH 44305.BFor the MIM procedure,it is recommended that a blend of compounding materialsbe prepared to improve accuracy of the weighing of these materials.This materialblend is prepared by blending a proportional mass of each material in a dry powderblender such as a biconical blender or vee blender.A mortar and pestle may beused for blending small