1、Designation:D412210a(Reapproved 2015)Standard 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 las
2、t 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 This practice covers guidelines for the production andtesting for uniformity of a lot of carbon black to be used as anIndustry
3、 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 standar
4、d 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 ElastomersTensionD1506 Test Methods for Carbon BlackAsh ContentD1508 Te
5、st 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 Extr
6、actablesTransmittance 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)Rec
7、ipe 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 HardnessD655
8、6 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 properti
9、es 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 pro
10、duction 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 h
11、ave 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.The bagged black will be segregated into at least twelve
12、equal sized sublots for uniformity testing.5.Sampling5.1 After a suitable time to allow the black to stabilize,a bagwill be selected from the approximate middle of each of thesublots;the bags selected will be numbered from one throughn,where n is the total number of sublots,in order to representthe
13、corresponding production lot.1This 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.1,2015.Published February 2015.Originallyapproved in 1982.L
14、ast previous edition approved in 2010 as D4122 10a.DOI:10.1520/D4122-10AR15.2For 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 AST
15、M website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 n 4-dm3(1-gal)samples,numbered from one through n,and taken from the corresponding bags,will be sent to eachparticipant in the interlaboratory study to evaluate the newIRB.5.3
16、Additionally,a 4-dm3(1-gal)sample of the previousIRB taken from a common blended source will also be sent toeach participant.6.Procedure6.1 Test,in order,one of the n samples on each of the oneto n days.These days shall be as near to consecutive aspossible.6.2 Each day a sample is tested,subject it to all of the testmethods described in 6.3 and 6.4.6.3 Rubber Physical Tests:6.3.1 Perform the following physical tests in rubber on boththe new and previous IRB.Test samples mixed in accordancewith T
