Continuous 3D Printing of Biomimetic Beetle Mandible Structure with Long Bundles of Aramid Fiber Composites

Fiber-reinforced composites are an ideal high-performance composite material made from a combination of high-strength continuous fibers and polymer matrix. Compared to short cut fibers, long strand can improve the mechanical properties fiber more effectively. Herein, aramid fiber-reinforced PLA filaments with centering were prepared by modifying outlet design desktop-grade thermoplastic single-screw melt extruder. Inspired cross-laminated structure beetle’s mandible biomimetic was printed, which demonstrates significant influence on properties. The G-code printing program developed, microstructure fracture surface specimen analyzed. uniform orderly arrangement within resin-based 3D-printed found. Consequentially, bionic exhibits 12% increase in tensile strength 5% impact toughness, confirming feasibility utilizing 3D manufacture bundles for enhanced performances.