Accession Number : ADA305362

Title :   Polyimide Film Wear - Effect of Temperature and Atmosphere.

Descriptive Note : Technical note,

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

Personal Author(s) : Fusaro, Robert L.

PDF Url : ADA305362

Report Date : APR 1976

Pagination or Media Count : 22

Abstract : Friction and wear experiments conducted on polyimide films bonded to 440C stainless steel disks indicated that a wear transition (from high wear to low wear) accompanied a friction transition (from high friction to low friction). In dry argon or dry air (<20 ppm H2O), the transition was found to occur at 40 deg + or - 10 deg C; when H2O was present in air (10 000 ppm H2O), the transition was found to be elevated to a temperature between 100 deg and 200 deg C. Wear rate calculations made at 25 deg, 100 deg, and 200 deg C indicated that film wear was relatively constant for particular experimental conditions; however, the rate was strongly dependent on temperature and atmosphere. jg p2

Descriptors :   *TEMPERATURE, *FILMS, *WEAR, *FRICTION, *ATMOSPHERES, *POLYIMIDE RESINS, COMPUTATIONS, HIGH RATE, AIR, WATER, STAINLESS STEEL, MOISTURE CONTENT, LOW LEVEL, TRANSITIONS, ARGON, LOW HUMIDITY.

Subject Categories : Plastics
      Polymer Chemistry
      Coatings, Colorants and Finishes
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE