2026-10-14T19:15:35Z https://www.scidb.cn/oai

10.57760/sciencedb.13499 2024-09-18T10:40:50Z

2024-09-18 Tensile mechanical properties of single aramid fiber/PLA and pure PLA filaments doi:10.57760/sciencedb.13499 en "Fiber-reinforced composites are an ideal high-performance composite material made from a combination of high-strength continuous fibers and a polymer matrix. 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. Consequentially, the bionic composites exhibits a 12% increase in tensile strength and a 5% increase in impact toughness, confirming the feasibility of utilizing continuous 3D printing to manufacture long bundles of aramid fiber composite filaments for enhanced mechanical performances." "Self-made filament; Bionic structure printing; Continuous long bundle; Aramid fiber printing; 3D printing Shuigen Li Zhaohua Lin RESTRICTED dataset http://www.doi.org/10.3390/biomimetics8030283 Science Data Bank