About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-Based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Understanding Slurry Degradation in Digital Light Processing of High Refractive Index Ceramics |
| Author(s) |
Sadaf Sobhani |
| On-Site Speaker (Planned) |
Sadaf Sobhani |
| Abstract Scope |
The stability of photopolymer-based slurries is critical for achieving consistent part quality in digital light processing (DLP) of high refractive index ceramics. In this work, we investigate the chemical and physical degradation of a silicon nitride slurry during extended DLP printing. Fourier Transform Infrared Spectroscopy (FTIR) was used to track compositional changes in the slurry over time and correlate these with reductions in penetration depth and curing efficiency. Results indicate that partial polymerization and resin degradation accumulate throughout the printing process, leading to significant reductions in cure depth, by over 30% in some cases, compromising part fidelity and interlayer adhesion. These findings highlight the importance of slurry management strategies to ensure print consistency and enable reliable processing of ceramic-loaded photopolymers for additive manufacturing. |