| 초록 |
The 3D printing of polymers has drawn attention on various industry and research fields recently. Fused Deposition Modeling (FDM) is simple and widely used method of 3D printing technique, but thermoplastic polymer filament, which is typically used for FDM method has poor mechanical properties and solvent resistance compared to thermoset polymer. To overcome this drawback, simple epoxy-acid vitrimers were utilized in this study. Dynamic covalent network bonds in vitrimer provide mechanical and dimensional stability, and allow reshape and reuse of 3D printed objects. To make vitrimers suitable for FDM 3D printing, the physical properties were tuned through control of chemical formulation and catalyst concentration. The controlled properties were investigated using dynamic mechanical analysis (DMA), and universal testing machine (UTM). |
