ASTM D 6278 Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
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ASTM D 6278 Document Information:
Title
Standard Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus
ASTM International
Publication Date:
Dec 1, 2007
Scope:
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 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 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 D 5275 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operational requirements than withdrawn Test Method D 3945.
NOTE 5—Test Method D 7109 is a similar procedure that measures
shear stability at both 30 and 90 injection cycles. This test
method uses 30 injection cycles only.
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.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- diesel injector apparatus
- mechanical shear stability
- polymer containing fluid
- viscosity loss
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