The pursuit of space exploration and long-duration missions has intensified the demand for lightweight yet robust materials that can be manufactured in orbit. Traditional strategies of launching pre-fabricated components from Earth face severe limitations in payload, cost, and energy efficiency. In-situ manufacturing therefore emerges as a critical remediation pathway, where the ability to cure and process high-performance polymers in space can enable unprecedented structural complexity.

Frontal Ring-Opening Metathesis Polymerization (FROMP) has attracted attention as a uniquely energy-efficient curing strategy, capable of propagating polymerization with minimal external input. Yet, the extreme heat release inherent to FROMP introduces critical challenges for aerospace use, most notably outgassing through resin volatilization and thermal decomposition via retro Diels–Alder pathways. Outgassing not only threatens material integrity but also compromises the strict contamination thresholds required in spacecraft.

Here, we report the design and synthesis of a new olefin-based resin that addresses these challenges by combining intrinsically low volatility with exceptional resistance to retro Diels–Alder decomposition. Upon FROMP curing, the resulting polymer exhibited an exceptionally high glass transition temperature (Tg > 250 °C), together with superior Young’s modulus, tensile strength, and oxidative stability relative to the benchmark pDCPD system. To demonstrate versatility, this resin was further applied in carbon-fiber reinforced composites.

These findings highlight how deliberate molecular design can overcome the intrinsic limitations of conventional FROMP resins, enabling safer, higher-performing materials for advanced applications. More broadly, this work exemplifies how integrating modern synthetic strategies with the unique requirements for manufacturing in extreme environments can guide the development of next-generation high-performance polymers.

Jeffrey Moore

University of Illinois Urbana-Champaign Beckman Institute for Advanced Science and Technology

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