Title: DEVELOPMENT OF RTM-PROCESSABLE HIGH TEMPERATURE BENZOXAZINE RESINS
Abstract: Composite Technology Development, Inc. is developing resin transfer molding (RTM)processable benzoxazine resins as potential replacements for BMI resins in high performance composites applications. Bismaleimide (BMI) resins currently provide a market niche in the manufacture of composite structures that require a very high glass transition temperature, good stability and thermal oxidation, and low flammability. However, the relatively high cost of BMI resins limits the applications of these materials. To date, benzoxazine formulations have been developed that show dry glass transition temperatures between 240 °C and 275 °C and wet glass transition temperatures between 200 °C and 260 °C. Reduced property knockdowns under hot/wet conditions have also been observed. Recent results will be discussed.
Authors: Andrea E. Haight, Mark W. Haynes, Kevin Hedin
Conference: CAMX 2017 –Orlando