The Barcelona Institute of Science and Technology (ICFO) mixed nano-tungsten oxide particles with polyamide as a photosensitizer for color 3D printing, avoiding the printing discoloration problem caused by traditional carbon-based photosensitizers, and enabling high-fidelity 3D color printing. In order to reduce costs and increase printing speed, selective sintering 3D printing usually adds photothermal sensitizers, which can accelerate the conversion of incident light into heat. However, when printing white and colored products, commonly used carbon-based photothermal sensitizers Agents can cause discoloration of the artwork.
Previous ICFO related research has used gold-coated nano-silica microspheres to overcome the above-mentioned problems (ie, strong absorption in the near-infrared and minimal interaction with visible light). Facts have proved that while the effect is obvious in color printing, there are still limitations in large-scale colorful high-fidelity and pure white printing. This ICFO uses nano-tungsten oxide (WO3) as a photothermal sensitizer, which greatly reduces production difficulty and material cost. It is colorless at high concentrations and has a strong absorption in the near-infrared region, proving that they can convert light into heat at a very fast rate, making them fast fusing agents; UV light is effective in activating or deactivating; more importantly, they are stable at very high temperatures and have been shown to outperform heating on the rate of color change compared to other available sensitizers. Finally, when mixed with other colored inks, these nanoparticles were able to reproduce the same color as the original powder, maintaining the color purity of the original sample. This also opens up a new avenue for high-fidelity 3D color printing.
More details of tungsten oxide product, please visit website: tungsten-oxide.com
Please contact CHINATUNGSTEN for inquiry and order of tungsten oxide:
Email: sales@chinatungsten.com
Tel.: 86 592 5129595
