| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Development of a Low-viscosity, UV-curable PDMS Formulation for Vat Photopolymerization |
| Author(s) |
Hongtao Song, Roxana Carbonell, Martha Leach, Carolyn Seepersad |
| On-Site Speaker (Planned) |
Hongtao Song |
| Abstract Scope |
Polydimethylsiloxane (PDMS) elastomers are silicone rubbers widely used in industrial and academic applications. Increasing levels of research have focused on adopting PDMS to Vat Photopolymerization (VPP) in recent years. Unfilled PDMS exhibits relatively low mechanical strength and stiffness. Adding reinforcement particles enhances its mechanical properties, but it also results in greatly increased resin viscosity, which raises serious challenges in printing with the resin in Vat Photopolymerization. The mechanical properties of PDMS are governed by the average molecular weight (Mn), the concentration of crosslinking chemical bonds, and the concentration of the reinforcement fumed silica nanoparticles. This work investigates the influence of the previously mentioned factors on the resultant mechanical properties. The results offer guidelines for designing UV-curable PDMS formulations with desired mechanical properties while maintaining a relatively low viscosity for ease of operation. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |