Accession Number : ADA306485

Title :   Thermal Stability of Epoxy Composite Materials.

Descriptive Note : Final rept.,

Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS

Personal Author(s) : Fleszar, Mark F.

PDF Url : ADA306485

Report Date : DEC 1995

Pagination or Media Count : 22

Abstract : The thermal oxidative stability of Fiberite 7714A (glass/epoxy). 976 (carbon/epoxy). and 977-2 (carbon/epoxy) was studied at temperatures up to and above their respective glass transition temperatures. Composite samples were subjected to both short- and long-term heating. The first set of samples was heated for 4-6 hours from 100 to 350 deg C, and the second set of samples was cycled for 30-minute intervals from 200 to 400 deg C. The samples were tested in a Perkin-Elmer TGA7 Thermogravimetric Analyzer and weight loss recorded. Weight loss data were compared based on temperature and time at temperature. The results showed good thermal stability for each epoxy material through its glass transition temperature with a weight loss of 1.5% or less. The results were comparable for both long- and short-term temperature exposure.

Descriptors :   *FIBER REINFORCED COMPOSITES, *THERMAL STABILITY, *EPOXY COMPOSITES, GUN BARRELS, HIGH TEMPERATURE, CARBON, TRANSITION TEMPERATURE, OXIDATION, HEATING, GLASS FIBERS, PREPREGS, EPOXY RESINS, WEIGHT REDUCTION, THERMAL DEGRADATION.

Subject Categories : Laminates and Composite Materials
      Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE