Accession Number : ADA310400

Title :   Friction and Wear Characteristics of Polyimide and Filled Polyimide Compositions in Vacuum (10(exp -10) mm Hg).

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Buckley, Donald H.

PDF Url : ADA310400

Report Date : FEB 1966

Pagination or Media Count : 14

Abstract : The friction and wear characteristics of polyimide and filled polyimide compositions were examined in a vacuum environment (10(exp -10) mm Hg). Copper-filled (to 50 weight percent) compositions as well as graphite- and molybdenum-disulfide-filled compositions were studied. The results of the investigation indicate that, to obtain effective lubrication (low friction and wear), a transfer of the polyimide film to the mating surface must be achieved. In its absence, high friction occurred with all polyimide materials. With copper addition, a minimum in wear rate was obtained at 30 weight percent copper. Both friction and wear increased with the addition of graphite as a filler to the polyimide. With the addition of molybdenum disulfide, marked decreases in both friction and wear occurred.

Descriptors :   *VACUUM, *WEAR, *FRICTION, *POLYIMIDE RESINS, POLYMERS, FILMS, GRAPHITE, CHEMICAL COMPOSITION, COPPER, LUBRICATION, MOLYBDENUM COMPOUNDS, SULFIDES, FILLERS.

Subject Categories : Polymer Chemistry
      Inorganic Chemistry
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE