1、Designation:D710918Standard Test Method forShear Stability of Polymer-Containing Fluids Using aEuropean Diesel Injector Apparatus at 30 Cycles and 90Cycles1This standard is issued under the fixed designation D7109;the number immediately following the designation indicates the year oforiginal adoptio
2、n 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-containin
3、g fluids.The test method mea-sures the viscosity loss,in mm2/s and percent,at 100 C ofpolymer-containing fluids when evaluated by a diesel injectorapparatus procedure that uses European diesel injector testequipment.The viscosity loss reflects polymer degradation dueto shear at the nozzle.Viscosity
4、loss is evaluated after both30 cycles and 90 cycles of shearing.NOTE1This test method evaluates the shear stability of oils after both30 cycles and 90 cycles of shearing.For most oils,there is a correlationbetween results after 30 cycles and results after 90 cycles of shearing,butthis is not univers
5、al.NOTE2Test Method D6278 uses essentially the same procedure with30 cycles only instead of both 30 cycles and 90 cycles.The correlationbetween results from this test method at 30 cycles and results from TestMethod D6278 has not been established.NOTE3Test Method D2603 has been used for similar evalu
6、ation 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.NOTE4This test method uses test apparatus as defined in CECL-14-A-93.This test method diffe
7、rs from CEC-L-14-A-93 in the period oftime required for calibration.NOTE5Test Method D5275 also shears oils in a diesel injectorapparatus but may give different results.NOTE6This test method has different calibration and operationalrequirements than withdrawn Test Method D3945.1.2 The values stated
8、in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.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
9、 standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific warning statements are given in Section 8.1.4 This international standard was developed in accor-dance with internationally recognized princi
10、ples 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 Viscos
11、ity 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 FluidsD6278 Test Method for Shear Stability of Polymer Contain-ing Fl
12、uids Using a European Diesel Injector ApparatusD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System Performance2.2 Coordinated European Council(CEC)Standard:CEC L-14-A-93 Evaluation of the Mechanical Shear Stabil-ity of Lub
13、ricating Oils Containing Polymers33.Terminology3.1 Definitions:3.1.1 kinematic viscosity,na measure of the resistance toflow of a fluid under gravity.3.2 Definitions of Terms Specific to This Standard:3.2.1 calibration pressure,nthe recorded gauge pressurewhen calibration fluid RL233 undergoes a vis
14、cosity 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.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 Propert
15、ies.Current edition approved June 1,2018.Published August 2018.Originallyapproved in 2004.Last previous edition approved in 2018 as D7109 12.DOI:10.1520/D7109-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of A
16、STMStandards 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 recognize