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High Temperature Degradation of 5250-4 Polymer Resin
Patrick E. Link
(Author)
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Biblioscholar
· Paperback
High Temperature Degradation of 5250-4 Polymer Resin - Link, Patrick E.
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Synopsis "High Temperature Degradation of 5250-4 Polymer Resin"
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 agedat 163, 177, and 190 ⁰C in all environments for at least 250 hours. Isothermal thermo-gravimetric analysis demonstrated that weight loss was negligible for agingin the argon environment, indicating weight loss isthe result of an oxidative process at these temperatures.The 5250-4 powder exhibited an initial period of weightgain before eventually losing weight inboth air and oxygen. The applicabilityof a closedloop oxidation scheme to 5250-4 gravimetric behavior was investigated. Kinetic parameters for the scheme were determined for the AirForce Research Laboratory's polymermatrix composite lifetime prediction modeling efforts.
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The book is written in English.
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