About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Molecular Approaches to Ceramics; Synthesis, Processing, Modeling, and Derived Ceramics
|
| Presentation Title |
Photo-Rheology of Ceramic-Filled Preceramic Polymers for Material Extrusion Additive Manufacturing |
| Author(s) |
Brett G. Compton, James J Griebler, Chase Mortensen, Ria D Corder |
| On-Site Speaker (Planned) |
Brett G. Compton |
| Abstract Scope |
The development of photopolymerizable preceramic polymer resins for applications in additive manufacturing requires detailed understanding of how filler-matrix interactions and irradiation parameters dictate the transition from extrudable feedstock to crosslinked network. This work presents a fundamental study of the process-property relationships in a preceramic polymer resin, with added photo-initiator, crosslinker, and silicon nitride filler. We utilize in-situ photo-rheology to investigate the effects of filler loading, crosslinker concentration, and UV irradiation intensity. Results indicate that even with a UV-transparent filler, increasing loading significantly impacts the effective cure depth and the percolation threshold of the network. Complementary material extrusion additive manufacturing studies link photo-rheological measurements to stability of 3D-printed objects subject to in-situ UV curing. This study establishes an experimental framework for characterizing filled, UV-cure preceramic polymer systems, connecting processing parameters directly to the emergent viscoelastic properties of the cured composite. |