About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Integrating a Direct Ink Write and Mask-projection Vat Photopolymerization System to Enable Additive Manufacturing of High Viscosity Photopolymer Resins |
Author(s) |
Daniel A. Rau, Mattia Forgiarini, Christopher B. Williams |
On-Site Speaker (Planned) |
Daniel A. Rau |
Abstract Scope |
Vat Photopolymerization (VP) enables the fabrication of parts with high-resolution features and sharp edges through its selective patterning of UV irradiation on a resin surface. However, its recoating procedure limits the process to low viscosity photoresins, which limits both the available processable materials and the mechanical properties of the final parts. To enable layered processing of high viscosity photoresins, and thus high-performance materials, a Direct Ink Write (DIW) and a VP system are integrated into a single additive manufacturing platform. The hybrid process uses the DIW system to first extrude an unpatterned layer of photoresin that is then selectively cured into the desired layer shape by the Mask-Projection VP system. The relaxation of viscosity constraints due to material deposition via DIW allows for the high-resolution printing of new high-performance photoresins with novel chemistries, high molecular weight monomers, or high solids loading that ultimately result in improved performance over traditional resins. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |