Biomimetic Structure Design and Mechanical Behavior of 3D Printed Carbon Fiber-Polyetheretherketone
To analyze the mechanical behavior of 3D printed carbon fiber reinforced polyetheretherketone composite(C-PEEK)materials and explore the optimal process parameters for designing biomimetic structures,the evolution of mechanical properties of 3D printed C-PEEK material was investigated under various process parameters including carbon fiber content,printing nozzle temperature,platform temperature,slicing layer thickness,printing speed,infill density,infill linear angle,infill pattern,as well as heat treatment temperature and duration.The results showed that C-PEEK with 10 wt.%carbon fiber exhibited the best tensile performance,and the optimal 3D printing parameters were determined as follows:printing nozzle temperature of 440℃,platform temperature of 130℃,slicing thickness of 0.2 mm,infill density of 100%,infill linear angle of 90°,printing speed of 40 mm/s,and heat chamber temperature of 90℃.Additionally,based on the optimal 3D printing parameters,a biomimetic structure combining honeycomb porous and Bouligand spiral layering was designed.Compression strength tests were conducted on the structure,and the compressive strength of the honeycomb-Bouligand biomimetic structure with an interlayer rotation angle of 30° reached 24.1 MPa,exhibiting excellent non-catastrophic fracture characteristics.
3D printingpolyetheretherketone composite materialsbiomimetic structuresmechanical behaviorcrushing failure
万方数据
维普
