FEATURE Benzoxazine Formulation Development of Benzoxazine Formulation for High Temperature Composites Tao Tao and Kuanqiang Gao Huntsman Advanced Material The Woodlands, TX Email: Tao_Tao@huntsman.com ABSTRACT Benzoxazine formulations are highly desirable with carbonfiber reinforced thermoset manufacture for high temperature application in aerospace industry. Benzoxazines with additional unsaturated functional groups are the primary candidates for such application. A series of benzoxazines have been evaluated. Investigation has been carried out for the homopolymerization of those benzoxazines, their copolymerization with other benzoxazines, epoxy resins, and bismaleimides, such as the Huntsman products MY0610 and Matrimid 5292A. Thermostabilities, thermo-mechanical properties, and possibility to improve the toughness of cured formulation are also studied, and with promising results. 56 | SAMPE JOURNAL | JULY AUGUST 2022 www. sampe.orghttp://www.sampe.org