ASTM_D_4122_-_17e1.pdf

Designation:D4122171Standard Practice forCarbon BlackEvaluation of an Industry Reference Black1This standard is issued under the fixed designation D4122;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.1NOTEEditorial corrections made throughout Annex A1 in June 2017.1.Scope1.1 This practice covers guidelines for the production andtesting for uniformity of a lot of carbon black to be used as anIndustry Reference Black(IRB).1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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 and health practices and determine the applica-bility 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 ElastomersTensionD1506 Test Methods for Carbon BlackAsh ContentD1508 Test Method for Carbon Black,Pelleted Fines andAttritionD1509 Test Methods for Carbon BlackHeating LossD1510 Test Method for Carbon BlackIodine AdsorptionNumberD1513 Test Method for Carbon Black,PelletedPour Den-sityD1514 Test Method for Carbon BlackSieve ResidueD1618 Test Method for Carbon Black ExtractablesTransmittance of Toluene ExtractD2414 Test Method for Carbon BlackOil AbsorptionNumber(OAN)D3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsD3191 Test Methods for Carbon Black in SBR(Styrene-Butadiene Rubber)Recipe and Evaluation ProceduresD3192 Test Methods for Carbon Black Evaluation in NR(Natural Rubber)D3265 Test Method for Carbon BlackTint StrengthD3493 Test Method for Carbon BlackOil AbsorptionNumber of Compressed Sample(COAN)D5230 Test Method for Carbon BlackAutomated Indi-vidual Pellet HardnessD6556 Test Method for Carbon BlackTotal and ExternalSurface Area by Nitrogen Adsorption3.Significance and Use3.1 These guidelines are intended to ensure that IRBs areevaluated by a standard procedure.3.2 These guidelines are to be used to establish the averagephysicochemical and physical rubber properties of a lot ofcarbon black to be used as an IRB.4.Production,Quality Control,and Quality Assurance4.1 It is assumed that the manufacturer of the IRB will usestate-of-the-art techniques to ensure maximum uniformitythroughout the entire production run.The production should bemade in one continuous production lot run.The testing calledfor in this practice is not intended to be a substitute forin-process quality control.This interlaboratory study is onlyadequate to verify the quality of a homogeneous lot.4.2 The size of the lot is determined by historical records onthe rate of use.The lot should have an expected life of 8 to 10years at the most recent rate of use.4.3 The black should be bagged in 50-lb polyethylene bagsto reduce moisture incursion.Each pallet of bagged blackshould be wrapped in plastic to reduce environmental expo-sure.Depending on the size of the lot,the bagged black will be1This practice is under the jurisdiction of ASTM Committee D24 on CarbonBlack and is the direct responsibility of Subcommittee D24.61 on Carbon BlackSampling and Statistical Analysis.Current edition approved Jan.1,2017.Published January 2017.Originallyapproved in 1982.Last previous edition approved in 2015 as D4122 10a(2015).DOI:10.1520/D4122-17E01.2For 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.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.1 segregated into equal sized sublots,typically ten to twenty,representing some logical subdivision,such as a truck load.5.Sampling5.1 To avoid having to break down stacked and wrappedbags on a pallet,the bags to be used as samples for uniformityand property determination testing are typically removed atappropriate times f