Date of Award
Master of Science in Aeronautical Engineering
Department of Aeronautics and Astronautics
Anthony N. Palazotto, PhD
5250-4 bismaleimide resin is used in high performance polymer matrix composites with high temperature aeronautical applications. This thesis investigated the thermal and oxidative degradation of 5250-4 neat resin powder in argon, air, and oxygen environments. The powder was aged at 163 deg. C, 177 deg. C, and 190 deg. C in all environments for at least 250 hours. Isothermal thermo-gravimetric analysis demonstrated that weight loss was negligible for aging in the argon environment, indicating weight loss is the result of an oxidative process at these temperatures. The 5250-4 powder exhibited an initial period of weight gain before eventually losing weight in both air and oxygen. The applicability of a closed loop oxidation scheme to 5250-4 gravimetric behavior was investigated. Kinetic parameters for the scheme were determined for the Air Force Research Laboratory's polymer matrix composite lifetime prediction modeling efforts.
DTIC Accession Number
Link, Patrick E., "High Temperature Degradation of 5250-4 Polymer Resin" (2007). Theses and Dissertations. 2943.