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- Title
Enhanced buckling strength of the thin-walled continuous carbon fiber–reinforced thermoplastic composite through dual coaxial nozzles material extrusion process.
- Authors
Cao, Dongyang
- Abstract
The interfacial bonding strength of the two deposited layers under the material extrusion process is always considered a shortcoming in the 3D-printed part. To address this issue, an extra polymer coating is added to the extruded filament by adding another self-designed nozzle concentrically to the original nozzle on the 3D printing head. Three filaments were used in the fabrication process: continuous carbon fiber as reinforcement filament, polylactic acid (PLA) filament as polymer substrate filament, and carbon nanotube (CNT)/PLA filament as polymer coating filament. In addition, the effect of CNT concentration on the 3D-printed thin-walled cylinder CNT/PLA/continuous carbon fiber (CF) composite was investigated by compressive buckling tests. Compared with 3D-printed thin-walled cylinder PLA/CF composite, the buckling loads were enhanced by 16.7%, 32.5%, 40.7%, and 50.1% under 5 wt%, 10 wt%, 15 wt%, and 20 wt% CNT concentration in the PLA polymer filament. This new 3D printing design creates a new possible solution to strengthen the 3D-printed part and can border the application of 3D-printed parts by varying polymer coating type through modifying the nanofiller-modified polymer filament.
- Subjects
THERMOPLASTIC composites; EXTRUSION process; FIBROUS composites; MANUFACTURING processes; NOZZLES; CARBON fibers
- Publication
International Journal of Advanced Manufacturing Technology, 2023, Vol 128, Issue 3/4, p1305
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-023-12014-8