Boundary Lubrication, Thermal and Oxidative Stability of a Fluorinated Polyether and a Perfluoropolyether Triazine

Abstract

Boundary lubricating characteristics, thermal stability and oxidation-corrosion stability were determined for a fluorinated polyether and a perfluoropolyether triazine. A ball-on-disk apparatus, a tensimeter and oxidation-corrosion apparatus were used. Results were compared to data for a polyphenyl ether and a C-ether. The polyether and triazine yielded better boundary lubricating characteristics than either the polyphenyl ether or C-ether. The polyphenyl ether had the greatest thermal stability (443°C) while the other fluids had stabilities in the range 389° to 397°C. Oxidation-corrosion results indicated the following order of stabilities: perfluoropolyether triazine > polyphenylether > C-ether > fluorinated polyether.