Research on ignition and reaction characteristic of PTFE-based reactive materials

Abstract In order to study the ignition characteristic of PTFE-based reactive materials (RMs), Al/W/PTFE RMs with different W powder contents were prepared and split Hopkinson pressure bar (SHPB) test was carried out under loading conditions. The temperature rise three calculated theoretically. material model parameters formulations by using mixture equation state theory Johnson-cook model, impact process numerically simulated AUTODYN dynamics software. results showed that Al/PTFE (26.5/73.5) formula has reaction when speed is 27.47m/s, (7.94/45.33/46.73) 28.68m/s. (5.29/80/14.71) only weak experimental related rise. Under condition, local high induced occurred at crack RMs.With increase content, overall decreased, degree decreased.