1、Designation:D395806(Reapproved 2021)Standard Test Methods forRubberEvaluation of BIIR and CIIR(HalogenatedIsobuteneIsoprene Rubber)1This standard is issued under the fixed designation D3958;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revi
2、sion,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 procedures,and test methods for the eva
3、lua-tion of halogenated isobutene-isoprene rubbers(BIIR andCIIR).1.2 Both mill and miniature internal mixer procedures aregiven.1.3 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of
4、 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.1.5 This international standard was developed in accor-d
5、ance 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 Stand
6、ards:2D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD1646 TestMethodsforRubberViscosity,StressRelaxation,andPre-VulcanizationCharacteristics(Mooney Viscometer)D2084 Test Method for Rubber PropertyVulcanizationUsing Oscillating Disk Cure MeterD3182 Practice for RubberMat
7、erials,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 R
8、ubber PropertyVulcanizationUsing Rotorless Cure MetersD6204 Test Method for RubberMeasurement of Unvulca-nized Rheological Properties Using Rotorless Shear Rhe-ometers3.Significance and Use3.1 These tests are intended mainly for referee purpose butmay be used for quality control of rubber production
9、.Theymay also be used in research and development work and forcomparison of different samples in a standard formula.3.2 These tests may be used to obtain values for qualitycontrol acceptance of rubber.4.Standard Test Formulas4.1 Standard FormulasSee Table 1.5.Sample Preparation5.1 Obtain and prepare
10、 the test samples in accordance withPractice D3896.6.Mixing Procedures6.1 For general mixing procedures,refer to Practice D3182.6.1.1 The compound may be prepared either on a mill,in aminiature internal mixer,or a lab internal mixer,althoughslightly different results may be obtained.6.2 Mixing Cycle
11、s:6.2.1 Method A:Mill MixSee Table 2.6.2.1.1 Mix with the mill roll temperature maintained at 406 5C(104 6 9F).The indicated mill openings should bemaintained insofar as possible to provide a standard foruniform breakdown of the rubber due to milling.Necessaryadjustments may be made to maintain a go
12、od working bank atthe nip of the rolls.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and Rubber-like Materials and are the direct responsibility of SubcommitteeD11.23 on Synthetic Rubbers.Current edition approved Nov.1,2021.Published December 2021.Originallyapproved i
13、n 1980.Last previous edition approved in 2016 as D3958 06(2016).DOI:10.1520/D3958-06R21.2For 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 pa
14、ge onthe ASTM website.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 theDev
15、elopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1?6.2.1.2 Condition the carbon black in accordance with 5.6of Practice D3182.This is critical with halogenated IIR whenthe simple zinc oxide cure is used.6.
16、2.1.3 After mixing according to Table 2,measure andrecord the batch mass.If it differs from the theoretical value bymore than 0.5%,discard the batch.6.2.1.4 If required,cut samples from the batch to allowtesting of compound viscosity and processability in accordancewith Test Methods D1646 or D6204,and vulcanization char-acteristics in accordance with Test Methods D2084 or D5289.6.2.1.5 If tensile stress strain tests are required,sheet off toa finished thickness of approximately 2.2 mm(0.087 in.)
