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Walter, Piotr Aureliusz
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Electrically conductive acrylonitrile butadiene styrene(ABS)/copper composite filament for fused deposition modeling
Abstract
Every year additive techniques are becoming more and more important and popular method of making components. Along with the increasing importance of these techniques, mainly Fused Deposition Modeling technology (FDM), there has been a need to develop new materials that can broaden the scope in which these technologies are used. It is necessary to develop materials with new properties in relation to the standard ones used. Thanks to the addition of metal powders, nanomaterials and other additives to thermoplastic polymers, composites with better magnetic, electrically or heat conductive properties etc. were obtained. This article presents a method for producing polymer composites containing copper powders as the functional phase in order to obtain electrically conducting filaments. Acrylonitrile butadiene styrene (ABS) was used as the matrix of the composite as one of most popular thermoplastic polymer uses in FDM 3D printing. The process of producing the filament, from polymer granulate and metal powder to the finished composite was developed. Composite filaments with a content of 75 to 84,6 wt% of copper were tested. The effect of filling the composite with copper powder on its electrical properties has been studied. Samples with a copper content above 80 wt% showed high electrical conductivity. Electrical conductive paths of the developed composite in the closed polymer housing were printed using the dual extrusion 3D printer.