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Feasibility of producing core-shell filaments through fused filament fabrication

Sover, A and Ermolai, V and Raichur, AM and Ciobanu, R and Aradoaei, M and Lucanu, N (2021) Feasibility of producing core-shell filaments through fused filament fabrication. In: Polymers, 13 (23).

pol_13-23_2021.pdf - Published Version

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Official URL: https://doi.org/10.3390/polym13234253


Fused filament fabrication is a technology of additive manufacturing that uses molten thermoplastics for building parts. Due to the convenient shape of the raw material, a simple filament, the market offers a great variety of materials from simple to blends of compatible materials. However, finding a material with the desired properties can be difficult. Making it in-house or using a material manufacturer can be costly and time-consuming, especially when the optimum blend ratios are unknown or new design perspectives are tested. This paper presents an accessible method of producing core-shell filaments using material extrusion 3D printing. The printed filaments are characterised by a polycarbonate (PC) core and acryl butadiene styrene (ABS) shell with three material ratios. Their performance was investigated through printed samples. Additionally, the material mixing degree was studied by varying the extrusion temperature, nozzle feeding geometry, and layer thickness. The influence of all four factors was evaluated using a graphical representation of the main effects. The results showed that a core-shell filament can be processed using a 3D printer with a dual extrusion configuration and that the mechanical properties of the samples can be improved by varying the PC�ABS ratio. This research provides an accessible method for developing new hybrid filaments with a predesigned structure using a 3D printer. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Journal Article
Publication: Polymers
Publisher: MDPI
Additional Information: The copyright for this article belongs to Authors.
Keywords: 3D printers; Extrusion; Printing presses; Shells (structures); Styrene, 3d printed filament; Blend ratios; Compatible materials; Core shell; Core-shell filament; Fused filament fabrication; Materials manufacturers; Multi materials; Property; Simple++, Fabrication
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 05 Jan 2022 06:34
Last Modified: 05 Jan 2022 06:34
URI: http://eprints.iisc.ac.in/id/eprint/70896

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