ASTM D6278-17
(Test Method)Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
SIGNIFICANCE AND USE
5.1 This test method evaluates the percent viscosity loss for polymer-containing fluids resulting from polymer degradation in the high shear nozzle device. Thermal or oxidative effects are minimized.
5.2 This test method is 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 percent viscosity loss 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.
Note 1: 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 2: 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 3: Test Method D5275 also shears oils in a diesel injector apparatus but may give different results.
Note 4: This test method has different calibration and operational requirements than withdrawn Test Method D3945.
Note 5: Test Method D7109 is a similar procedure that measures shear stability at both 30 and 90 injection cycles. This test method uses 30 injection cycles only.
1.2 The values stated in SI units are to be regarded as the standard.
1.2.1 Exception—Non-SI units are provided in parentheses.
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 precautionary statements are given in Section 8.
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Designation: D6278 − 17
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
1
European Diesel Injector Apparatus
This standard is issued under the fixed designation D6278; 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* D445 Test Method for Kinematic Viscosity of Transparent
and Opaque Liquids (and Calculation of Dynamic Viscos-
1.1 This test method covers the evaluation of the shear
ity)
stability of polymer-containing fluids. The test method mea-
D2603 Test Method for Sonic Shear Stability of Polymer-
sures the percent viscosity loss at 100 °C of polymer-
Containing Oils
containing fluids when evaluated by a diesel injector apparatus
D5275 Test Method for Fuel Injector Shear Stability Test
procedure that uses European diesel injector test equipment.
(FISST) for Polymer Containing Fluids
The viscosity loss reflects polymer degradation due to shear at
D6299 Practice for Applying Statistical Quality Assurance
the nozzle.
and Control Charting Techniques to Evaluate Analytical
NOTE 1—Test Method D2603 has been used for similar evaluation of
Measurement System Performance
shear stability; limitations are as indicated in the significance statement.
D7109 Test Method for Shear Stability of Polymer Contain-
Nodetailedattempthasbeenundertakentocorrelatetheresultsofthistest
ing Fluids Using a European Diesel Injector Apparatus at
method with those of the sonic shear test method.
30 and 90 Cycles
NOTE 2—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 3
2.2 Coordination European Council (CEC) Standard:
time required for calibration.
CEC L-14-A-93 Evaluation of the Mechanical Shear Sta-
NOTE 3—Test Method D5275 also shears oils in a diesel injector
bility of Lubricating Oils Containing Polymers
apparatus but may give different results.
NOTE 4—This test method has different calibration and operational
requirements than withdrawn Test Method D3945.
3. Terminology
NOTE5—TestMethodD7109isasimilarprocedurethatmeasuresshear
3.1 Definitions:
stability at both 30 and 90 injection cycles. This test method uses 30
injection cycles only.
3.1.1 kinematic viscosity, n—a measure of the resistance to
flow of a fluid under gravity.
1.2 The values stated in SI units are to be regarded as the
standard.
3.2 Definitions of Terms Specific to This Standard:
1.2.1 Exception—Non-SI units are provided in parentheses.
3.2.1 calibration pressure, n—the recorded gauge pressure
when calibration fluid RL233 undergoes a viscosity loss of
1.3 This standard does not purport to address all of the
2 2
safety concerns, if any, associated with its use. It is the 2.70 mm /s to 2.90 mm /s when the recorded gauge pressure is
within the range of 13.0 MPa to 18.0 MPa.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.2.2 percent viscosity loss, n—viscosity loss, as defined in
bility of regulatory limitations prior to use. Specific precau-
3.2.3, divided by the pre-sheared viscosity, and reported as a
tionary statements are given in Section 8.
percent.
3.2.3 viscosity loss, n—thelossinviscositydeterminedfrom
2. Referenced Documents
the difference in kinematic viscosity at 100 °C of pre-sheared
2
2.1 ASTM Standards:
and post-sheared fluid.
4. Summary of Test Method
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
4.1 A polymer-containing fluid is passed through a diesel
Subcommittee D02.07 on Flow Properties.
injector nozzle at a shear rate that causes polymer molecules to
Current edition approved Jan. 1, 2017. Published February 2017. Originally
ɛ1
degrade. The resultant degradation reduces the kinematic
approved in 1998. Last previous edition approved in 2012 as D6278 – 12 . DOI:
10.1520/D6278-17.
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
3
Standards volume information, refer to the standard’s Document Summary page on Available from CEC Secretariat, InterlynkAdministrative Services, Ltd., Lynk
the ASTM website. 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
---------------------- Page: 1 ----------------------
D6278 − 17
viscosity of the fluid under test. T
...
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.
´1
Designation: D6278 − 12 D6278 − 17
Standard Test Method for
Shear Stability of Polymer Containing Fluids Using a
1
European Diesel Injector Apparatus
This standard is issued under the fixed designation D6278; 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
ε NOTE—Editorial changes made to 3.2.1 and Section 10 in April 2013.
1. Scope*
1.1 This test method covers the evaluation of the shear stability of polymer-containing fluids. The test method measures the
percent viscosity loss at 100°C100 °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.
NOTE 1—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 2—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 3—Test Method D5275 also shears oils in a diesel injector apparatus but may give different results.
NOTE 4—This test method has different calibration and operational requirements than withdrawn Test Method D3945.
NOTE 5—Test Method D7109 is a similar procedure that measures shear stability at both 30 and 90 injection cycles. This test method uses 30 injection
cycles only.
1.2 The values stated in SI units are to be regarded as the standard.
1.2.1 Exception—Non-SI units are provided in parentheses.
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 precautionary 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
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D7109 Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus at 30 and 90
Cycles
3
2.2 Coordination European Council (CEC) Standard:
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, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.07 on Flow Properties.
Current edition approved Nov. 1, 2012Jan. 1, 2017. Published February 2013February 2017. Originally approved in 1998. Last previous edition approved in 20072012
ɛ1
as D6278D6278 – 12 –07. DOI: 10.1520/D6278-12.10.1520/D6278-17.
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, 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
---------------------- Page: 1 ----------------------
D6278 − 17
3.2.1 calibration pressure, n—the recorded gauge pressure when calibration fluid RL233 undergoes a viscosity loss of
2 2
2.72.70 mm /s to 2.9 mm2.90 mm /s when the recorded gauge pressure is within the range of 13.013.0 MPa to 18.0
MPa.18.0 MPa.
3.2.2 percent viscosity loss, n—viscosity loss, as defined in
...
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