Analysis of Polylactic Acid Conductive Filament’s Properties

The main goal of this article is to evaluate the electrical properties of one of the commercially available electrically conductive filament printed by a 3D printer. These properties are verified for Proto-pasta PLA. For experimental purposes, the samples with three widths were printed, while the height stayed constant. At the same time, the effect of the number of layers was experimentally evaluated. The number of layers is determined by the increment of the printhead’;s z-axis shift for each step of the print. Samples were printed by the Prusa i2 MK2S 3D printer. The evaluation parameter is a resistivity. The resistivity of the material is determined by applying a four-wire method, which eliminates the influence of feed wires on the measurement results. Measurements will be evaluated for a statistically significant number of samples.