| 초록 |
Polyimides (PIs) have been receiving attention as high-performance materials because of their outstanding thermal and mechanical performance, and chemical resistance based on rigid imide structure. In addition, PI powder can be used in manufacturing lightweight molding parts where precision, thermal, and dimensional stability are critical such as bearing and sealing parts. However, general synthesis methods of PIs are employing high-boiling and toxic solvents such as dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), and N-methyl-2-pyrrolidone (NMP), which are hazardous to the environment. Moreover, these organic solvents lead to high production costs. In this study, we developed a green synthesis method to synthesize PI powder via hydrothermal polymerization. In addition, thermal and mechanical properties of compression-molded specimens prepared with PI powder were investigated for their application to compression molding. |
