LUBRICATION AND PHYSICAL PROPERTIES OF FLUOROCARBON FLUIDS.
ARMY WEAPONS COMMAND ROCK ISLAND ILL RESEARCH AND ENGINEERING DIRECTORATE
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Nine fluorocarbon fluids representing four classes of fluorinated organic liquids were compared with the base fluids for the present specification weapons lubricants. Wear, friction, load-carrying capacity, and physical property data show that several of the fluorocarbon fluids are superior to the weapons lubricant base fluids. The best fluorocarbon fluids are the trifluoropropylmethyl polysiloxanes and the polyhexafluoropropylene oxides. The effects of the addition of antiwear and corrosion inhibitors on the trifluoropropylmethyl polysiloxanes was investigated. It was shown that, under certain conditions, the addition of perfluoroalkyl acids improve the antiwear and frictional properties, characteristics of the fluorocarbon fluid. Good corrosion inhibiting characteristics of the fluorocarbon fluid are obtained by the addition of a perfluoroalkyl phosphate ester. The antiwear and the extreme pressure properties of trifluoropropylmethyl polysiloxane and polyhexafluoropropylene oxide are not dependent on a reaction between the fluorine molecule and the substrate. Author
- Lubricants and Hydraulic Fluids