ASTM D7109-12
(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
5.1 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.
5.2 This test method may be used for quality control purposes by manufacturers of polymeric lubricant additives and their customers.
5.3 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 D6278 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 D6278 has not been established. Note 3—Test Method D2603 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 D5275 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.
1.2 The values stated in SI units are to be regarded as 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 − 12
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 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
3
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 RL233 undergoes a viscosity loss of 2.7
1.2 The values stated in SI units are to be regarded as
2
to 2.9 mm /s when the recorded gauge pressure is within the
standard. The values given in parentheses are for information
range of 13.0 to 18.0 MPa.
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, Liquid Fuels, and Lubricants and is the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee D02.07 on Flow Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 1, 2012. Published April 2013. Originally the ASTM website.
3
approved in 2004. Last previous edition approved in 2007 as D7109–07. DOI: Available from CEC Secretariat, InterlynkAdministrative Services, Ltd., Lynk
10.1520/D7109-12. House, 17 Peckleton Lane, Desford, Leicestershire, LE9 9JU, United Kingdom.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C70
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
Designation: D7109 − 07 D7109 − 12
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 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*
1.1 This test method covers the evaluation of the shear stability of polymer-containing fluids. The test method measures the
2
viscosity loss, in mm /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 D6278 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 D6278 has not been established.
NOTE 3—Test Method D2603 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 D5275 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.
1.2 The values stated in SI units are to be regarded as 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:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D2603 Test Method for Sonic Shear Stability of Polymer-Containing Oils
D5275 Test Method for Fuel Injector Shear Stability Test (FISST) for Polymer Containing Fluids
D6278 Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment 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 Dec. 1, 2007Nov. 1, 2012. Published January 2008April 2013. Originally approved in 2004. Last previous edition approved in 20062007 as
D7109–06.–07. DOI: 10.1520/D7109-07.10.1520/D7109-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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
Available from CEC Secretariat, Madou Plaza, 25th floor, Place Madou 1, B-1210 Brussels, Belgium.Interlynk Administrative Services, Ltd., Lynk House, 17 Peckleton
Lane, Desford, Leicestershire, LE9 9JU, United Kingdom.
*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
1
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