| 초록 |
As three-dimensional (3D) printing technology is emerging as an alternative way of manufacturingthe high resolution 3D printing device often requires such systems as drop jetting printing of in-situ UV-curable photopolymers. The key issue is a process control and its optimization to ensure the dimensional accuracy, surface roughness, and mechanical properties of printed structures, which are based on the time-and temperature-dependent glass transition temperature(Tg) of the resin system under UV-curing. In this study, the UV-cure kinetics and Tg development of a commercially available UV-curable acrylic resin system were investigated as a model system using a differential scanning photocalorimeter(DPC). The developed kinetic model included the limited conversion of cure that could be achieved as a maximum at a specific isothermal curing temperature. Using the developed model, the Tg was successfully described by a modified DiBeneditto equation as a function of UV curing. |
