Abstract
The thermo‐oxidative stability of a linear perfluoropolyalkylether fluid has been improved by stressing the fluid at 371°C while bubbling air or nitrogen in an overboard configuration. It is believed that the minor amounts of less stable species present in the fluid, possibly hydrogen‐containing species, are degraded and removed during the process leaving the residual fluid with enhanced stability. Two antioxidation/corrosion additives, a substituted triphenyl phosphine and a substituted diphenyl ether, were formulated with the stressed fluid, and their behavior was compared with the same formulations in unstressed fluid. While the phosphine formulation in stressed fluid showed better stability than its formulation in unstressed fluid, no such effect was noticed with the diphenyl ether additive formulations.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G.A. Beane, IV, L.J. Gschwender, C.E. Snyder, Jr. and J.T. Shimski, J. Synth. Lubr. 3 (1984) 21.
W.R. Loomis and R.L. Fusaro, NASA TM-104531 (1992).
K.J.L. Paciorek and R.H. Kratzer, J. Fluorine Chem. 67 (1994) 169, and references therein.
C.E. Snyder, Jr., L.J. Gschwender, K.C. Eapen and G.J. Chen, US Patent 5,316,989 (May 1994).
C.E. Snyder, Jr., L.J. Gschwender and G.W. Fultz, Lubrication Eng. 49 (1993) 702.
D. Sianesi, A. Pasetti, R. Fontanelli and M. Binaghi, Wear 18 (1971) 85.
C. Tamborski, C.E. Snyder, Jr. and J.B. Christian, US Patent 4,454,349 (1984).
W.R. Jones, Jr., K.J.L. Paciorek, J.H. Nakahara, M.E. Smythe and R.H. Kratzer, Ind. Eng. Chem. Res. 26 (1987) 1930.
K.C. Eapen and L.S. Chen, US Statutory Invention Registration H1537 (1996).
K.J.L. Paciorek, R.H. Kratzer, J. Kaufman and J.H. Nakahara, J. Appl. Polym. Sci. 24 (1979) 1397.
Y. Ohsaka, T. Tohzuka and S. Takaki, US Patent 4,845,268 (1986).
Y. Ohsaka, Petrotech (Tokyo) 8 (1985) 840.
L.J. Gschwender, C.E. Snyder, G.W. Fultz, D.H. Hahn and J.R. Demers, Tribol. Trans. 38 (1995) 618.
C. Tamborski, C.E. Snyder, Jr. and J.B. Christian, US Patent 4,454349 (June 1984).
L.J. Gschwender and C.E. Snyder, Jr., US Patent 5,302,760 (April 1994).
P.J. John, J. Liang and J.N. Cutler, Tribol. Lett. 4 (1998) 277.
K.C. Eapen, Tribol. Lett. 3 (1997) 283.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fultz, G.W., Scott, O.S., Chen, L.S. et al. Stabilization of a linear perfluoropolyalkylether fluid. Tribology Letters 5, 287–29 (1998). https://doi.org/10.1023/A:1019166413682
Issue Date:
DOI: https://doi.org/10.1023/A:1019166413682