Filament Spectrum PLA Electrically Conductive 1.75mm BLACK 0.75kg

Product detailed description

Spectrum PLA Electrically Conductive is a specialised technical filament developed for applications where electrical conductivity is essential, combined with the ease of printing typical of PLA. The material is based on a PLA polymer modified with carbon nanotubes (CNT), which significantly reduce surface resistance, making it suitable for components requiring basic electrical conductivity.

The filament retains the key advantages of PLA, such as ease of processing, low shrinkage, and the absence of a need for a heated chamber. This makes Spectrum PLA Electrically Conductive an excellent choice for educational, workshop, and prototyping environments, where both functionality and printing simplicity are key. Furthermore, printed parts have a matte surface, which improves aesthetics and minimises visible layer lines.

Due to the presence of carbon nanotubes, the filament is slightly abrasive – we recommend using a hardened steel or ruby nozzle.

Key features:

Volume resistivity as low as ~97 Ω·m
Electrical conductivity
Dimensional stability and easy printing
Matte surface that reduces visible layers
Volume resistivity test interpretation:

To verify the conductive properties, tests were performed using a 3D printed sample measuring 4 × 4 × 120 mm (100% infill), at a voltage of 10 V and three different extrusion temperatures: 210 °C, 220 °C and 230 °C. The measured volume resistivity values were:

210 °C: 120 Ω·m
220 °C: 103 Ω·m
230 °C: 97 Ω·m
These results show that increasing the extrusion temperature improves electrical conductivity. Higher temperatures allow for better dispersion of carbon nanotubes within the printed structure, resulting in lower volume resistivity. For users, this means that for parts where conductivity is critical, it is recommended to use higher extrusion temperatures (up to 230 °C) while ensuring compatibility with their printer hardware.