Title: Enabling In-Space Manufacturing of Reactive Thermoset Composite via Flexible Containment

Authors: Ivan Wu, Zheyuan Zheng, Logesh Shanmugam, Jeff Baur

DOI:

Abstract: Thermoset composites offer superior durability and thermomechanical performance compared to thermoplastic counterparts, yet their application toward in-space manufacturing (ISM) is hindered by limited shelf life, resin volatility, and high processing costs. To address these challenges, this study utilizes frontally polymerizable (FP) resins—specifically catalyzed dicyclopentadiene (DCPD)—infused into carbon fibers and encapsulated within sealed, impermeable, compliant polymer films. This containment strategy significantly enhances storage stability, exceeding six months at -20°C, and effectively suppresses resin volatility in vacuum environments, limiting total mass loss to < 1% during cure. The improved storage life is attributed to the containment’s prevention of water ingress, which otherwise prevents the tributyl phosphite inhibitors’ oxidation. By leveraging the rapid, reactive nature of FP resins, the sealed prepregs were thermally cured in just 5 minutes at 155°C with low pressure (11 psi). The resulting composites achieved high-quality structural properties, including high fiber compaction shown through micrographs, high glass transition temperature (~160°C) and high flexural modulus (~180 GPa). These properties remained consistent even after the six-month storage period. Finally, we demonstrate the scalability of this method through the fabrication of tubular longerons and showcase its versatility with other reactive systems, such as radical-induced cationic FP epoxies. This work establishes a viable pathway for low-energy, rapid manufacturing of high-performance structures in extreme environments

References: [1] [2] [3] R. V. Powell, A future for large space antennas. 1978. Accessed: Aug. 17, 2025. [Online]. Available: https://ntrs.nasa.gov/citations/19780049019 J. M. Hedgepeth and L. R. Adams, “Design concepts for large reflector antenna structures,” NASA-CR-3663, Jan. 1983. Accessed: Aug. 17, 2025. [Online]. Available: https://ntrs.nasa.gov/citations/19830008513 R. A. Russell, T. G. Campbell, and R. E. Freeland, “A technology development program for large space antennas,” presented at the Intern. Astronautical Congr. of the Intern. Astronautical Federation, Tokyo, Sept. 1980. Accessed: Aug. 17, 2025. [Online]. Available: https://ntrs.nasa.gov/citations/19810003645 [4] M. DeCoster et al., “On-Orbit Assembly and Manufacturing of Large Structures to Enable Space Situational Awareness,” in AIAA SCITECH 2023 Forum, National Harbor, MD & Online: American Institute of Aeronautics and Astronautics, Jan. 2023. doi: 10.2514/6.2023-1118. [5] [6] [7] [8] [9] P. E. Glaser, “Power from the Sun: Its Future,” Science, vol. 162, no. 3856, pp. 857–861, Nov. 1968, doi: 10.1126/science.162.3856.857. J. M. Hedgepeth, R. H. Mac Neal, and H. U. Schuerch, “Heliogyro solar sailer Summary report,” NASA-CR-1329, June 1969. Accessed: Aug. 17, 2025. [Online]. Available: https://ntrs.nasa.gov/citations/19690019483 L. Puig, A. Barton, and N. Rando, “A review on large deployable structures for astrophysics missions,” Acta Astronautica, vol. 67, no. 1, pp. 12–26, July 2010, doi: 10.1016/j.actaastro.2010.02.021. J.-E. Suh, S. P. Dassanayake, M. Thomson, and S. Pellegrino, “Scalable Concept for Reflector Antenna Assembled in Space,” in AIAA SCITECH 2024 Forum, Orlando, FL: American Institute of Aeronautics and Astronautics, Jan. 2024. doi: 10.2514/6.2024-0823. A. Brinkmeyer, S. Pellegrino, and P. M. Weaver, “Effects of Long-Term Stowage on the Deployment of Bistable Tape Springs,” J. Appl. Mech, vol. 83, no. 011008, Nov. 2015, doi: 10.1115/1.4031618. [10] H. G. Bhundiya, F. Royer, and Z. Cordero, “Engineering Framework for Assessing Materials and Processes for In-Space Manufacturing,” J. of Materi Eng and Perform, vol. 31, no. 8, pp. 6045–6059, Aug. 2022, doi: 10.1007/s11665-022-06755-y. [11] “In-space manufacturing of thermoset composite structures: A short review - Md Atikur Rahman, Jeffery W. Baur, 2025.” Accessed: Sept. 05, 2025. [Online]. Available: https://journals.sagepub.com/doi/full/10.1177/1045389X251328189 [12] I. D. Robertson et al., “Rapid energy-efficient manufacturing of polymers and composites via frontal polymerization,” Nature, vol. 557, no. 7704, pp. 223–227, May 2018, doi: 10.1038/s41586-018-0054-x. [13] O. Davydovich et al., “Encapsulated Transition Metal Catalysts Enable Long-term Stability in Frontal Polymerization Resins,” Macromolecules, vol. 56, no. 18, pp. 7543–7550, Sept. 2023, doi: 10.1021/acs.macromol.3c01146. [14] P. J. Centellas, M. Yourdkhani, S. Vyas, B. Koohbor, P. H. Geubelle, and N. R. Sottos, “Rapid multiple-front polymerization of fiber-reinforced polymer composites,” Composites Part A: Applied Science and Manufacturing, vol. 158, p. 106931, July 2022, doi: 10.1016/j.compositesa.2022.106931. [15] S. Vyas et al., “Through-thickness frontal polymerization: Process development and optimization,” Composites Part A: Applied Science and Manufacturing, vol. 180, p. 108084, May 2024, doi: 10.1016/j.compositesa.2024.108084. [16] A. D. Tran, T. Koch, P. Knaack, and R. Liska, “Radical induced cationic frontal polymerization for preparation of epoxy composites,” Composites Part A: Applied Science and Manufacturing, vol. 132, p. 105855, May 2020, doi: 10.1016/j.compositesa.2020.105855. [17] D. Bomze, P. Knaack, T. Koch, H. Jin, and R. Liska, “Radical induced cationic frontal polymerization as a versatile tool for epoxy curing and composite production,” Journal of Polymer Science Part A: Polymer Chemistry, vol. 54, no. 23, pp. 3751–3759, 2016, doi: 10.1002/pola.28274. [18] M. S. Malik, S. Schlögl, M. Wolfahrt, and M. Sangermano, “Review on UV-Induced Cationic Frontal Polymerization of Epoxy Monomers,” Polymers, vol. 12, no. 9, Art. no. 9, Sept. 2020, doi: 10.3390/polym12092146. [19] Z. Yuan, S. Huang, W. Chen, and D. Jiang, “Synthesis and characterization of epoxy resinpolydicyclopentadiene interpenetrating polymer networks by UV-initiated simultaneously frontal polymerization,” Journal of Applied Polymer Science, vol. 141, no. 47, p. e56268, 2024, doi: 10.1002/app.56268. [20] I. Mata, B. J. Tindall, and J. W. Baur, “DICYCLOPENTADIENE-EPOXY BLENDS FOR LOW-ENERGY PROCESSING OF TOUGHENED CARBON FIBER COMPOSITES: SAMPE 2025 Conference and Exhibition,” SAMPE 2025 Conference and Exhibition, p. 382, 2025, doi: 10.33599/nasampe/s.25.0153. [21] I. D. Robertson, L. M. Dean, G. E. Rudebusch, N. R. Sottos, S. R. White, and J. S. Moore, “Alkyl Phosphite Inhibitors for Frontal Ring-Opening Metathesis Polymerization Greatly Increase Pot Life,” ACS Macro Lett., vol. 6, no. 6, pp. 609–612, June 2017, doi: 10.1021/acsmacrolett.7b00270. [22] N. A. Parikh, “Rapid manufacturing of thermoset polymers and composites processed by frontal polymerization,” Thesis, University of Illinois at Urbana-Champaign, 2023. Accessed: Jan. 04, 2025. [Online]. Available: https://hdl.handle.net/2142/120530 [23] Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a Vacuum Environment, E595-15, May 14, 2021. Accessed: Dec. 19, 2024. [Online]. Available: https://www.astm.org/e0595-15r21.html [24] G. Esposito, G. Tandon, A. Abbott, D. Butcher, and H. Koerner, “Frontal polymerization for UV‐ and thermally initiated EPON 826 resin,” Polymer Engineering & Sci, vol. 64, no. 10, pp. 4760–4773, Oct. 2024, doi: 10.1002/pen.26879. [25] Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials, D7264. doi: 10.1520/D7264_D7264M-21. [26] DuPont, “Kapton FN Polyimide Film Datasheet.” July 2020. [Online]. Available: chromeextension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.dupont.com/content/dam/electr onics/amer/us/en/electronics/public/documents/en/EI-10160-Kapton-FN-Data-Sheet.pdf [27] “Ultra-Low Outgassing (UltraLO) Polyethylene Film,” Aeropackaging. Accessed: Sept. 16, 2025. [Online]. Available: https://aeropackaging.com/ultralo-ultra-low-outgassing-polyfilm [28] Airtech International Inc., “Dahlar Release Bag 500 Data Sheet.” [Online]. Available: chromeextension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.freemansupply.com/datasheets /Airtech/rbg500.pdf [29] “DuPontTM Dartek® N-201 Nylon 6,6 Non-Forming Film, 25 μm Thickness (discontinued **) datasheet.” Accessed: Sept. 16, 2025. [Online]. Available: https://www.lookpolymers.com/polymer_DuPont-Dartek-N-201-Nylon-66-Non-FormingFilm-25-m-Thickness-nbspdiscontinued-.php [30] DuPont, “Tefzel ETFE Technical Datasheet.” [Online]. Available: chromeextension://efaidnbmnnnibpcajpcglclefindmkaj/https://pronatindustries.com/wpcontent/uploads/2014/08/DuPont-ETFE-Film.pdf [31] A. Cisse, J. Peters, G. Lazzara, and L. Chiappisi, “PyDSC: a simple tool to treat differential scanning calorimetry data,” J Therm Anal Calorim, vol. 145, no. 2, pp. 403–409, July 2021, doi: 10.1007/s10973-020-09775-9. [32] Standard Test Method for Glass Transition Temperature (DMA Tg) of Polymer Matrix Composites by Dynamic Mechanical Analysis (DMA), D7028. doi: 10.1520/D702807E01R15. [33] J. J. Lessard et al., “Unraveling Reactivity Differences: Room-Temperature Ring-Opening Metathesis Polymerization (ROMP) versus Frontal ROMP,” J. Am. Chem. Soc., vol. 146, no. 11, pp. 7216–7221, Mar. 2024, doi: 10.1021/jacs.4c01578. [34] V. Mark and J. R. V. Wazer, “Tri-t-butyl Phosphite and Some of Its Reactions,” J. Org. Chem., vol. 29, no. 5, pp. 1006–1008, May 1964, doi: 10.1021/jo01028a005. [35] T. P. McFadden et al., “Using Data Science Tools to Reveal and Understand Subtle Relationships of Inhibitor Structure in Frontal Ring-Opening Metathesis Polymerization,” J. Am. Chem. Soc., vol. 146, no. 24, pp. 16375–16380, June 2024, doi: 10.1021/jacs.4c04622. [36] S. Wang et al., “Vacuum evaporation and condensation thermodynamics and evaporation kinetics of pure silver,” Next Materials, vol. 4, p. 100189, July 2024, doi: 10.1016/j.nxmate.2024.100189. [37] “Surface Science | Wiley Online Books.” Accessed: Sept. 16, 2025. [Online]. Available: https://onlinelibrary.wiley.com/doi/book/10.1002/9781119941798#aboutBook-pane [38] L. Yoksoulian, “Illinois researchers to kick off new phase of program to explore spacebased manufacturing.” Accessed: Dec. 29, 2024. [Online]. Available: https://news.illinois.edu/view/6367/1061587291 [39] Mitsubishi Chemical Carbon Fiber and Composites, Inc., “Newport Resin 301 Technical Datasheet.” 2016. [40] Toray Composite Materials, Inc., “Toray T700s Technical Datasheet.” Oct. 24, 2024.

Conference: SAMPE 2026

Publication Date: 2026/04/27

SKU: 179

Pages: 20

Price: $40.00