Warp deformation model of polyetheretherketone composites reinforced with carbon fibers in additive manufacturing

Abstract Fused deposition modeling (FDM) provides a promising technique for the small-batch fabrication of highly customized objects. The required performance FDM far exceeds performances conventional manufacturing methods. However, temperature difference that occurs during generates internal stress, which causes warp deformation and affects formed sample quality. Hence, identifying influencing factors is key to improving forming quality samples. In this work, PEEK/short carbon fiber (CF) composites were prepared by using method, formula was derived, mechanism obtained. Results showed material linear expansion coefficient, chamber temperature, size had considerable effects on deformation. Moreover, CF could improve PEEK/CF because their low Poisson’s ratio high thermal conductivity. addition reduce residual stress addition, annealing tensile bending mechanical properties composites. Specifically, after 3 h heat treatment at 190 °C, reached 10.7% 11.6%, respectively. Crystallinity analysis revealed strongly depended crystallinity. High cooling rates associated with crystallinity, strengths, elastic moduli. DMA high-temperature resistance as reflected higher glass transition than pure PEEK resin. Porosity content tailor pore distribution. study reported here reference fabricated through FDM.