Factors Contributing to the Properties of Fluoropolymer Barrier Films

Abstract

Films of poly(1,1-dihydropentadecafluorooctyl methacrylate) (PFOMA) cast from fluorinated solvents are inert and not wetted by most organic liquids. They are widely used as barrier film in such applications as confining lubricants to miniature bearing raceways or preventing creep onto critical nonlubricated electric relay contact points. The quality of the films, e.g. thickness, surface texture, and resistance to liquid lubricants, is described in terms of their relation to the formulation variables of the PFOMA-solvent system. Aspects which contribute to optimization of the barrier film properties and the relevance of solvent thermodynamic properties are discussed.

Presented at the 32nd Annual Meeting in Montreal, Quebec, Canada, May 9–12, 1977

Notes

Presented at the 32nd Annual Meeting in Montreal, Quebec, Canada, May 9–12, 1977