Adhesion behaviour of 3D printed polyamide–carbon fibre composite filament

Abstract

Fused deposition modelling is known for its ability to customise materials at peak performance for instant use but lacks in terms of interfacial adhesion of layup sequences. Hence, the mechanism of acquiring excellent interfacial adhesion, mainly via dried-up printed sample, has been discovered, resulting in the proper bonding formation upon layers. Result reveals that the flexural strength increased by 23% under 70°C drying conditions (5 h) and the impact strength increased by 240% compared to pure polyamide. This mechanism resists the deformation growth between the layers and enhances the mechanical strength at the highest level.

Keywords

• carbon fibres
• adhesion
• delamination
• mechanical testing