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<p>This study focuses on preparing and optimizing a submicron zirconia (ZrO<sub>2</sub>) suspension for vat photopolymerization (SLA) 3D printing. The suspension includes TZ-3YS-E zirconia powder, acrylate-based monomers (HDDA and TMPTA), a dispersant (Disperbyk-103), and a photoinitiator (TPO). It was prepared using a ball-milling process to ensure homogeneity and optimal dispersion. Rheological properties were assessed to determine the ideal dispersant concentration and milling time, aiming for a low-viscosity and stable suspension. Sedimentation tests were performed to evaluate suspension stability, identifying optimal parameters at 5 wt.% dispersant concentration and 120 minutes of ball milling. Additionally, an original curing depth experimental tool was built to optimize printing parameters such as laser speed and power, revealing a maximum over-polymerization of 30% in the lower layer. Finally, the ZrO<sub>2</sub> suspensions with optimal parameters were used to print complex-shaped objects.</p>

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Elaboration of Printable Nanopowder Zirconia Suspensions for Vat Photopolymerization

  • 期刊论文

  • 发表日期：

    2025年5月9日

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  • Aymeric Jugan,
  • Sylvain Marinel,
  • Loïc Le Pluart,
  • Théotim Marie,
  • Romuald Herbinet,
  • Charles Manière

摘要

This study focuses on preparing and optimizing a submicron zirconia (ZrO2) suspension for vat photopolymerization (SLA) 3D printing. The suspension includes TZ-3YS-E zirconia powder, acrylate-based monomers (HDDA and TMPTA), a dispersant (Disperbyk-103), and a photoinitiator (TPO). It was prepared using a ball-milling process to ensure homogeneity and optimal dispersion. Rheological properties were assessed to determine the ideal dispersant concentration and milling time, aiming for a low-viscosity and stable suspension. Sedimentation tests were performed to evaluate suspension stability, identifying optimal parameters at 5 wt.% dispersant concentration and 120 minutes of ball milling. Additionally, an original curing depth experimental tool was built to optimize printing parameters such as laser speed and power, revealing a maximum over-polymerization of 30% in the lower layer. Finally, the ZrO2 suspensions with optimal parameters were used to print complex-shaped objects.