ASTM_D_3185_-_06_2010.pdf

Designation:D318506(Reapproved 2010)Standard Test Methods forRubberEvaluation of SBR(Styrene-Butadiene Rubber)Including Mixtures With Oil1This standard is issued under the fixed designation D3185;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,testformulas,mixing procedures,and test methods for the evalu-ation of emulsion polybutadiene(EBR)and styrene-butadienerubbers(SBR)including the emulsion polybutadiene oil mas-terbatch rubbers,SBR oil masterbatches,and partially cross-linked and high Mooney rubbers.1.2 These test methods are also applicable to certain typesof solution SBR and solution SBR oil masterbatches that areused in applications requiring vulcanization.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD1646 Test Methods for RubberViscosity,Stress Relax-ation,and Pre-Vulcanization Characteristics(Mooney Vis-cometer)D2084 Test Method for Rubber PropertyVulcanizationUsing Oscillating Disk Cure MeterD3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsD3896 Practice for Rubber From Synthetic SourcesSamplingD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD5289 Test Method for Rubber PropertyVulcanizationUsing Rotorless Cure MetersD6204 Test Method for RubberMeasurement of Unvulca-nized Rheological Properties Using Rotorless Shear Rhe-ometers2.2 ISO Standard:ISO 2322 Rubber,Styrene-Butadiene(SBR)Emulsion-Polymerized General-Purpose TypeTest Recipe andEvaluation of Vulcanization Characteristics33.Summary of Test Methods3.1 These test methods include the standard test formulas,mixing procedures,and test methods for evaluating the follow-ing types of synthetic rubbers:3.1.1 Non-Oil-Extended Types,mill and Miniature InternalMixer(MIM)mixing procedures.3.1.2 Oil Masterbatch Types,mill and Miniature InternalMixer(MIM)mixing procedures.3.2 No correlation between results for mill and MIM mixingprocedures is implied.4.Significance and Use4.1 These test methods are mainly intended for refereepurposes but may be used for quality control of syntheticrubber production.They may also be used in research anddevelopment work and for comparison of different rubbersamples in a standard formula.4.2 These test methods may also be used to obtain values forcustomer acceptance of rubber.5.Standard Test Formulas5.1 Standard Formulas for Non-Oil-Extended TypesSeeTable 1.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and are the direct responsibility of Subcommittee D11.23 on SyntheticRubbers.Current edition approved Dec.1,2010.Published February 2011.Originallyapproved in 1973.Last previous edition approved in 2006 as D3185 06.DOI:10.1520/D3185-06R10.2For 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.1 For the MIM procedure it is recommended that a blendof compounding materials,excluding carbon black,be pre-pared to improve accuracy in the weighing of these materials.The compounding material blend is prepared by blending aproportional mass of each material in a dry powder blendersuch as a biconical blender or vee blender.A mortar and pestlemay be used for blending small quantities.5.1.2 Formula 1A shall apply to the general-purpose non-pigmented,non-oil-extended rubber types.It is also specifiedin International Standard ISO 2322ISO 2322 for evaluation ofgeneral purpose,nonpigmented,non-oil-extended rubbers.Formula 2A shall apply to the partially crosslinked andhigh-Mooney rubber(90 ML 1+4 at 100C)for example,SBR 1009,1018,and 1012 types.5.2 Standard Formulas for Oil Masterbatch TypesSeeTable 2.5.2.1 Formulas 1B to 6B shall apply to the general purposenonpigmented oil-extended rubber types according to the oilcontent of the rubber.Formula 1A may be used as analternative to Formulas 1B to 6B.Interna