Mathematics – Logic
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.524..337v&link_type=abstract
In: Proceedings of the 10th European Space Mechanisms and Tribology Symposium, 24-26 September 2003, San Sebastián, Spain. Compi
Mathematics
Logic
Tribology
Scientific paper
Pennzane SHF X-2000, by itself or containing additives or formulated into a variety of greases, has become an often used lubricant for aerospace applications. A recent bibliography contains over 100 references to Pennzane SHF X-2000 in the literature. This paper serves to announce that two new Pennzane Synthesized Hydrocarbon Fluids, X-1000 and X-3000, will be available. Pennzane SHF X-1000 is about half as viscous at low temperature as Pennzane SHF X-2000, with almost the same low outgassing. Pennzane SHF X-3000 is a thickened version of X-2000 having a viscosity at 100°C of 200 cSt, compared to that of X-2000 at 14.5 cSt. This paper will provide a listing of physical and tribological properties of all three Pennzane fluids, and will compare them to a linear perfluoropolyether (Brayco 815Z or Fomblin Z-25). Physical properties include viscosities at high and low temperatures, vacuum outgassing weight loss and condensables, and thermal properties, among others. Spiral Orbit Tribometry shows all three Pennzane fluids to have much longer useful lifetimes than PFPEs. Pennzane SHF X1000 has significantly better low temperature bearing torque than X2000 and is comparable to Z-25 at -15°C.
Jansen Mark J.
Jones William R. Jr.
Marchetti Mario
Venier Clifford G.
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