Teijin rapid cure prepreg and resin target high-rate eVTOL

Teijin Carbon details two rapid cure material routes for composite aircraft structures: Tenax Q-183, a fast-curing epoxy prepreg, and TR022, an epoxy resin system for liquid molding with dry fiber. Both address eVTOL, hybrid-electric and commercial aircraft makers that plan higher output and need shorter, more automated cure cycles.

By SamPublished October 26, 2026Updated October 28, 20262 min read

Tenax Q-183 is an epoxy prepreg that cures in 20 minutes at 160°C with no post cure. Teijin Carbon positions it for secondary structures such as fairings, covers, panels and movable surfaces, and cites strong hot/wet performance. It runs in presses, autoclaves or vacuum-bag-only processes.

The company adds that rapid cure prepregs are increasingly used in eVTOL rotors and other composite parts, and that several eVTOL, propulsion and regional aircraft programs already rely on Tenax prepregs.

The second route pairs TR022, a rapid cure epoxy resin, with Teijin dry fiber products ranging from NCF fabrics to UD tapes. It targets RTM, HP-RTM and infusion, where resin impregnates dry preforms inside a closed mold. According to Teijin Carbon, these processes bring five benefits: strong scalability, attractive cost structures, lower energy use during processing, a high degree of automation, and freedom to design complex geometries. With Teijin dry fiber, the company quotes a glass transition temperature of 212°C for TR022 and positions the pairing for demanding primary and secondary structures. Teijin designs its resins and reinforcements to work together as one system.

Wings, electric propulsion housings and fuselage structures, the company says, call for shorter cycles, lower curing energy, repeatable automated processes and stable quality suited to serial production.

Why it matters

Teijin Carbon expects aircraft production volumes to rise sharply across segments. Several emerging manufacturers plan to grow output from dozens of aircraft a year to hundreds or thousands, while narrow-body and regional commercial programs also return to higher volumes, which raises demand for faster, more repeatable composite processes.

Teijin Carbon Europe’s directory entries cover the Tenax HTS40 high-tenacity and Tenax IMS65 intermediate-modulus carbon-fiber families and the Tenax TPUD thermoplastic unidirectional prepreg. Q-183 and TR022 have no directory entries. Further supplier details are on the Teijin Carbon Europe company page.

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