900°F GLASS TRANSITION TEMPERATURE MATERIAL FORSTRUCTURAL COMPOSITES AND HIGH TEMPERATURECOMPOSITE TOOLING APPLICATIONS

摘要

P~2SI~(TM) 900HT composite prepreg system exhibits a glass transition temperature of 900°F(482°C) and excellent mechanical strength retention above 400°C. Void free composites areeasily fabricated into structural components using a variety of reinforcements, including glass,quartz, and carbon. This paper presents the latest processing, performance, and durabilitycharacterization of this recently developed composite system. In addition, results on the use ofP~2SI~(TM) 900HT for high temperature tooling applications, including 371°C autoclave cure ofpolyimide composites is presented. To date, no other polymer matrix composite has beensuccessfully used as a tooling material in 371°C autoclave processes.