DEVELOPMENT OF 'TRI A-X' POLYIMIDE/CARBON FIBER COMPOSITES PREPARED BY IMIDE SOLUTION PREPREGS

摘要

Novel phenylethynyl-terminated imide oligomers (n=4) derived from PMDA, p-ODA and BAFL were found to have high solubility and good processability. The imide oligomers were successfully converted to cured resins with high Tg and excellent mechanical properties. Particularly even the addition of 5-10 wt.% of BAFL was found that the obtained cured resins showed higher Tgs (> 350°C) and goodε_bs (>11%). Imide solution prepregs were prepared directly from the imide oligomer solution and carbon fibers. Polyimide/carbon fiber composites without voids and cracks were obtained from the imide solution prepregs.