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Rheologica Acta

, Volume 7, Issue 3, pp 255–260 | Cite as

The rheology of greases

1. Steady shearing
  • K. Bogie
  • J. Harris
Article

Summary

Two mineral oil greases and five synthetic base greases were subjected to steady laminar shearing motion in the range 0–40,000 sec−1 at the temperature of 19 ‡C, 58 ‡C and 90 ‡C. Three silicone base oils were also submitted to the same experimental programme.

A new geometry, namely the ring and plate was used in the programme and it appeared to function satisfactorily.

Conclusions are drawn on the relative mechanical and temperature stability of the mineral and synthetic base greases. All the materials except one (Aero Shell Grease 15) were reduced by theRee, Eyring formula. The Aero Shell Grease 15 exhibited a maximum in the shear stress — shear rate curves for all three temperatures.

Keywords

Polymer Silicone Shear Stress Shear Rate Grease 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1).
    Bogie, K. andJ. Harris, Rheol. Acta5, 212 (1966).Google Scholar
  2. 2).
    Bogie, K., Ph. D. Thesis, University of St. Andrews, in preparation.Google Scholar
  3. 3).
    Engineering, 1966, 202, 803, Engineering Way and Means Report.Google Scholar
  4. 4).
    Harris, J., Unpublished report to the Ministry of Technology under Agreement No. PD/61/07 dated 26th February, 1966.Google Scholar
  5. 5).
    Harris, J. andK. Bogie, Rheol. Acta6, 3 (1967).CrossRefGoogle Scholar
  6. 6).
    Kinner, G., Ministry of Technology, Materials Department Private Communication, dated 7 Aug. 1967.Google Scholar
  7. 7).
    Ree, T. andH. Eyring, J. Appl. Phys.26, 793 (1955).CrossRefGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag 1968

Authors and Affiliations

  • K. Bogie
    • 1
    • 2
  • J. Harris
    • 1
    • 2
  1. 1.The Department of Mechanical EngineeringUniversity of SalfordEngland
  2. 2.The Postgraduate School of Studies in Chemical EngineeringUniversity of BradfordEngland

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