| Abstract Scope |
Within the realms of aerospace, automotive, and construction industries, compo-site additive manufacturing (CAM) provides the design freedom and the energy-efficiency for fabrication of lightweight load-bearing structures based on continu-ous carbon fiber/thermoset composites. However, the show curing kinetics of thermoset resins, such as epoxy, present a challenge in achieving the desired for-mation and solidification of complex composite geometries within a limited timeframe. To overcome this challenge, we proposed a novel Tow-Preg Cladding (TPC) strategy, utilizing dual-cure resin to coat over conventional thermoset res-in, resulting in the formation of a core-shell carbon fiber reinforced tow-preg. This approach enables the creation of a rigid cladding over epoxy, thereby facili-tating the accelerated formation of intricate composite geometries. An advantage inherent to this strategy lies in the establishment of an interpenetrating polymer network (IPN) at the interlayers between the printed laminates, thereby resulting in exceptional mechanical performances. |