Abstract
This work determined the effect of different infill patterns with various infill densities on the tensile properties of FDM-printed reclaimed carbon fiber reinforced reclaimed polyamide-6 (rCF/rPA) composites. The rCFs were derived from recycled carbon fiber composite wastes by pyrolysis, while the rPA recyclates were obtained by mechanical recovery of end-of-life (EoL) nylon fishnets. The comparison between honeycomb and triangular infill patterns within rCF/rPA coupons via the FDM recycling was performed under the various relative densities of 10%, 30%, 50%, 70%, and 90%. The best performance of rCF/rPA coupons occurred in honeycomb infill patterns with 90% relative infill densities. The tensile strength and modulus of those specimens were 76.5 GPa ± 3.5 MPa and 4.8 GPa ± 0.1 GPa, respectively.
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