ASTM D7109-07
(Test Method)Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus at 30 and 90 Cycles
Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus at 30 and 90 Cycles
SIGNIFICANCE AND USE
This test method evaluates the percent viscosity loss of fluids resulting from physical degradation in the high shear nozzle device. Thermal or oxidative effects are minimized.
This test method may be used for quality control purposes by manufacturers of polymeric lubricant additives and their customers.
This test method is not intended to predict viscosity loss in field service in different field equipment under widely varying operating conditions, which may cause lubricant viscosity to change due to thermal and oxidative changes, as well as by the mechanical shearing of polymer. However, when the field service conditions, primarily or exclusively, result in the degradation of polymer by mechanical shearing, there may be a correlation between the results from this test method and results from the field.
SCOPE
1.1 This test method covers the evaluation of the shear stability of polymer-containing fluids. The test method measures the viscosity loss, in mm2/s and percent, at 100°C of polymer-containing fluids when evaluated by a diesel injector apparatus procedure that uses European diesel injector test equipment. The viscosity loss reflects polymer degradation due to shear at the nozzle. Viscosity loss is evaluated after both 30 and 90 cycles of shearing.
Note 1—This test method evaluates the shear stability of oils after both 30 and 90 cycles of shearing. For most oils, there is a correlation between results after 30 cycles and results after 90 cycles of shearing, but this is not universal.
Note 2—Test Method D 6278 uses essentially the same procedure with 30 cycles only instead of both 30 and 90 cycles. The correlation between results from this test method at 30 cycles and results from Test Method D 6278 has not been established.
Note 3—Test Method D 2603 has been used for similar evaluation of shear stability; limitations are as indicated in the significance statement. No detailed attempt has been undertaken to correlate the results of this test method with those of the sonic shear test method.
Note 4—This test method uses test apparatus as defined in CEC L-14-A-93. This test method differs from CEC-L-14-A-93 in the period of time required for calibration.
Note 5—Test Method D 5275 also shears oils in a diesel injector apparatus but may give different results.
Note 6—This test method has different calibration and operational requirements than withdrawn Test Method D 3945.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Section 8.
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Designation: D7109 − 07
StandardTest Method for
Shear Stability of Polymer Containing Fluids Using a
1
European Diesel Injector Apparatus at 30 and 90 Cycles
This standard is issued under the fixed designation D7109; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
1.1 This test method covers the evaluation of the shear 2.1 ASTM Standards:
stability of polymer-containing fluids. The test method mea- D445 Test Method for Kinematic Viscosity of Transparent
2
sures the viscosity loss, in mm /s and percent, at 100°C of and Opaque Liquids (and Calculation of Dynamic Viscos-
polymer-containing fluids when evaluated by a diesel injector ity)
apparatus procedure that uses European diesel injector test D2603 Test Method for Sonic Shear Stability of Polymer-
equipment.The viscosity loss reflects polymer degradation due Containing Oils
to shear at the nozzle. Viscosity loss is evaluated after both 30 D5275 Test Method for Fuel Injector Shear Stability Test
and 90 cycles of shearing. (FISST) for Polymer Containing Fluids
NOTE 1—This test method evaluates the shear stability of oils after both D6278 Test Method for Shear Stability of Polymer Contain-
30 and 90 cycles of shearing. For most oils, there is a correlation between
ing Fluids Using a European Diesel Injector Apparatus
resultsafter30cyclesandresultsafter90cyclesofshearing,butthisisnot
D6299 Practice for Applying Statistical Quality Assurance
universal.
and Control Charting Techniques to Evaluate Analytical
NOTE 2—Test Method D6278 uses essentially the same procedure with
Measurement System Performance
30 cycles only instead of both 30 and 90 cycles. The correlation between
results from this test method at 30 cycles and results from Test Method
2.2 Coordinated European Council (CEC) Standard:
D6278 has not been established.
CEC L-14-A-93 Evaluation of the Mechanical Shear Stabil-
NOTE 3—Test Method D2603 has been used for similar evaluation of
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ity of Lubricating Oils Containing Polymers
shear stability; limitations are as indicated in the significance statement.
Nodetailedattempthasbeenundertakentocorrelatetheresultsofthistest
method with those of the sonic shear test method.
3. Terminology
NOTE 4—This test method uses test apparatus as defined in CEC
3.1 Definitions:
L-14-A-93.This test method differs from CEC-L-14-A-93 in the period of
time required for calibration. 3.1.1 kinematic viscosity, n—a measure of the resistance to
NOTE 5—Test Method D5275 also shears oils in a diesel injector flow of a fluid under gravity.
apparatus but may give different results.
3.2 Definitions of Terms Specific to This Standard:
NOTE 6—This test method has different calibration and operational
3.2.1 calibration pressure, n—the recorded gauge pressure
requirements than withdrawn Test Method D3945.
when calibration fluid RL34 or RL233 undergoes a viscosity
1.2 The values stated in SI units are to be regarded as
2
loss of 2.75 to 2.85 mm /s when the recorded gauge pressure is
standard. The values given in parentheses are for information
within the range of 13.0 to 18.0 MPa (1885 to 2611 psi).
only.
3.2.2 percent viscosity loss, n—viscosity loss, as defined in
1.3 This standard does not purport to address all of the
3.2.3, divided by the pre-sheared viscosity, and reported as a
safety concerns, if any, associated with its use. It is the
percent.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 3.2.3 viscosityloss,n—thelossinviscositydeterminedfrom
bility of regulatory limitations prior to use. Specific warning the difference in kinematic viscosity at 100°C of pre-sheared
statements are given in Section 8. and post-sheared fluid.
1 2
This test method is under the jurisdiction of ASTM Committee D02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
D02.07 on Flow Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2007. Published January 2008. Originally the ASTM website.
3
approved in 2004. Last previous edition approved in 2006 as D7109–06. DOI: Available from CEC Secretariat, Madou Plaza, 25th floor, Place Madou 1,
10.1520/D7109-07. B-1210 Brussels, Belgium.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unit
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D7109–06 Designation:D7109–07
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
1
European Diesel Injector Apparatus at 30 and 90 Cycles
This standard is issued under the fixed designation D 7109; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers the evaluation of the shear stability of polymer-containing fluids. The test method measures the
2
viscosityloss,inmm /sandpercent,at100°Cofpolymer-containingfluidswhenevaluatedbyadieselinjectorapparatusprocedure
that uses European diesel injector test equipment. The viscosity loss reflects polymer degradation due to shear at the nozzle.
Viscosity loss is evaluated after both 30 and 90 cycles of shearing.
NOTE 1—This test method evaluates the shear stability of oils after both 30 and 90 cycles of shearing. For most oils, there is a correlation between
results after 30 cycles and results after 90 cycles of shearing, but this is not universal.
NOTE 2—TestMethodD 6278usesessentiallythesameprocedurewith30cyclesonlyinsteadofboth30and90cycles.Thecorrelationbetweenresults
from this test method at 30 cycles and results from Test Method D 6278 has not been established.
NOTE 3—Test Method D 2603 has been used for similar evaluation of shear stability; limitations are as indicated in the significance statement. No
detailed attempt has been undertaken to correlate the results of this test method with those of the sonic shear test method.
NOTE 4—This test method uses test apparatus as defined in CEC L-14-A-93. This test method differs from CEC-L-14-A-93 in the period of time
required for calibration.
NOTE 5—Test Method D 5275 also shears oils in a diesel injector apparatus but may give different results.
NOTE 6—This test method has different calibration and operational requirements than withdrawn Test Method D3945. D 3945.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. Specific warning statements are given in Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D 445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D 2603 Test Method for Sonic Shear Stability of Polymer-Containing Oils D3945Test Methods for Shear Stability of
Polymer-ContainingFluidsUsingaDieselInjec-
tor Nozzle
D 5275 Test Method for Fuel Injector Shear Stability Test (FISST) for Polymer Containing Fluids
D 6278 Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
D 6299 Practice for Applying Statistical Quality Assurance Techniques to Evaluate Analytical Measurement System
Performance
2.2 Coordinated European Council (CEC) Standard:
3
CEC L-14-A-93 Evaluation of the Mechanical Shear Stability of Lubricating Oils Containing Polymers
3. Terminology
3.1 Definitions:
3.1.1 kinematic viscosity, n—a measure of the resistance to flow of a fluid under gravity.
3.2 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.07 on
Flow Properties.
Current edition approved JulyDec. 1, 2006.2007. Published July 2006.January 2008. Originally approved in 2004. Last previous edition approved in 20052006 as
D 7109–056.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn.
3
Available from CEC Secretariat, Madou Plaza, 25th floor, Place Madou 1, B-1210 Brussels, Belgium.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D7109–07
3.2.1 calibration pre
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