FEATURE PHTHALONITRILE (PN) RESINS National Security Space-Northrop Grumman Phthalonitrile (PN) Resins/Composites Produced from Commodity Chemicals for Economy of Scale Matthew Laskoski1, Justin W. Hendrix2 1 Chemistry Division, U.S. Naval Research Laboratory, Washington, DC 2 Naval Surface Warfare Center (NSWCDD), Washington, DC Email: matthew.laskoski@nrl.navy.mil ABSTRACT The U.S. Naval Research Laboratory reports on its family of phthalonitrile polymer composites, developed by its team of innovators. The Laboratories process relies on easily processed resins and carbon fiber to produce composites using low complexity manufacturing methods. It does not require ultra-high temperatures or narrow temperature regimes due to its inherent controllable and mild cure chemistry. The resulting composites are dense and exhibit high durability in harsh environments. Our formulations provide the added ability of reinforcing these composites with a variety of 2D and 3D woven fabrics; containing carbon allotropes and secondary phases from a bottom-up approach. This provides us the capability to tailor our composite structures and maximize suitability for a broad range of engineering applications. DISTRIBUTION A: Approved for public release. Distribution unlimited. 8 | SAMPE JOURNAL | MAY JUNE 2023 www. sampe.orghttp://www.sampe.org