ASTM_D_6278_-_20a.pdf

Designation:D627820aStandard Test Method forShear Stability of Polymer Containing Fluids Using aEuropean Diesel Injector Apparatus1This standard is issued under the fixed designation D6278;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.Scope*1.1 This test method covers the evaluation of the shearstability of polymer-containing fluids.The test method mea-sures the percent viscosity loss at 100 C of polymer-containing fluids when evaluated by a diesel injector apparatusprocedure that uses European diesel injector test equipment.The viscosity loss reflects polymer degradation due to shear atthe nozzle.NOTE1Test Method D2603 has been used for similar evaluation ofshear stability;limitations are as indicated in the significance statement.No detailed attempt has been undertaken to correlate the results of this testmethod with those of the sonic shear test method.NOTE2This test method uses test apparatus as defined in CECL-14-A-93.This test method differs from CEC-L-14-A-93 in the period oftime required for calibration.NOTE3Test Method D5275 also shears oils in a diesel injectorapparatus but may give different results.NOTE4This test method has different calibration and operationalrequirements than withdrawn Test Method D3945.NOTE5Test Method D7109 is a similar procedure that measures shearstability at both 30 and 90 injection cycles.This test method uses 30injection cycles only.1.2 The values stated in SI units are to be regarded as thestandard.1.2.1 ExceptionNon-SI units are provided in parentheses.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.Specific precautionary statements are given in Section 8.1.4 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:2D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D2603 Test Method for Sonic Shear Stability of Polymer-Containing OilsD5275 Test Method for Fuel Injector Shear Stability Test(FISST)for Polymer Containing FluidsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD7042 Test Method for Dynamic Viscosity and Density ofLiquids by Stabinger Viscometer(and the Calculation ofKinematic Viscosity)D7109 Test Method for Shear Stability of Polymer-Containing Fluids Using a European Diesel Injector Ap-paratus at 30 Cycles and 90 Cycles2.2 Coordination European Council(CEC)Standard:3CEC L-14-A-93 Evaluation of the Mechanical Shear Sta-bility of Lubricating Oils Containing Polymers3.Terminology3.1 Definitions:3.1.1 kinematic viscosity,nthe ratio of the dynamic vis-cosity()to the density()of a liquid at a given temperature.3.2 Definitions of Terms Specific to This Standard:3.2.1 calibration pressure,nthe recorded gauge pressurewhen calibration fluid RL233 undergoes a viscosity loss of2.70 mm2/s to 2.90 mm2/s when the recorded gauge pressure iswithin the range of 13.0 MPa to 18.0 MPa.3.2.2 percent viscosity loss,nviscosity loss,as defined in3.2.3,divided by the pre-sheared viscosity,and reported as apercent.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.07 on Flow Properties.Current edition approved June 1,2020.Published June 2020.Originallyapproved in 1998.Last previous edition approved in 2020 as D6278 20.DOI:10.1520/D6278-20A.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 CEC Secretariat,Interlynk Administrative Services,Ltd.,LynkHouse,17 Peckleton Lane,Desford,Leicestershire,LE9 9JU,United Kingdom.*A Summary of Changes section appears at the end of this standardCopyright 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