Investigation of Mechanical Property Enhancement of 3D-Printed PA/Carbon Fiber Composites via Microwave Post-Treatment
발표자
남호근 (한국생산기술연구원)
연구책임자
고종완 (한국생산기술연구원)
초록
내용
Material extrusion (ME) is a widely used 3D printing method that forms parts by extruding thermoplastic materials through a heated nozzle. It offers advantages such as design flexibility and mold-free fabrication of complex structures. Polyamide (PA), known for its excellent wear and heat resistance, is widely used in ME due to its good processability. However, PA parts produced by ME exhibit weak interlayer bonding due to the layer-by-layer deposition process, resulting in poor mechanical performance. Conventionally molded PA exhibits a tensile strength of approximately 100 MPa, whereas ME-fabricated PA parts typically exhibit lower values, thereby limiting their industrial applicability. This study proposes a facile microwave post-treatment method to enhance the interlayer adhesion and mechanical properties of 3D-printed polymer composites. By optimizing microwave power (W) and exposure time (s), a 14.27% increase in strength was achieved without any noticeable geometric deformation.