Tensile mechanical properties of single aramid fiber/PLA and pure PLA filaments

Compared to short cut fibers, continuous long strand fibers can improve the mechanical properties of fiber composites more effectively. Herein, continuous aramid fiber-reinforced PLA filaments with fiber centering were prepared by modifying the outlet design of a desktop-grade thermoplastic single-screw melt extruder.

Inspired by the cross-laminated structure of a beetle's mandible fibers, a biomimetic structure composite was printed, which demonstrates a significant influence on the mechanical properties.                                                                                                          The G-code printing program was developed, and the microstructure of the fracture surface of the specimen was analyzed.The uniform and orderly arrangement of aramid fibers within the PLA resin-based 3D-printed specimen was found.