Abstract
Advanced composite materials (ACMs), especially nanoparticle-reinforced polymer composites (NpRPCs), exhibit desirable physical and chemical properties that include low density coupled with directed high stiffness and strength, optimal dimensional stability, superior temperature, and chemical resistance, as well as relatively cost-efficient manufacturing. Successful manufacturing of high-performance nanocomposites depends on the precise control of processing factors, including (i) uniform dispersion of the nanoparticles, (ii) effective matrix-filler interfacial interactions at the molecular level, and (iii) alignment/orientation of the nanoparticle and/or polymer chains. This study highlights a newly designed nozzle for multilayer composite structure fabrication using thermoplastic and thermoset polymers, as well as nanoparticles of various morphologies (e.g., 1D and 2D), which have been used for the scalable fabrication of 1D fibers, 2D coatings, and 3D architectures via 3D printing. Discussion of the nozzle design, layer formation mechanism, and fabrication of functional structures of 1D, 2D, and 3D morphologies will be the focus of this talk. The demonstrations in structural supports, thermal dissipations, electrical conductors, plastics recycling, stimuli-responsive systems, and tissue scaffolds show massive potential in national defense, space exploration, energy storage, and human health.
