Reactive materials (RMs) are usually prepared from metal/non-metal mixed powders through hot processing. The main feature of the material is that it will react and release energy when impacted. However, the impact-induced chemical energy release during impact has a complicated mechanism and needs to be further explored. This work investigated the impact-induced chemical process by split Hopkinson pressure bar and low-pressure experimental system, different atmospheric pressure environment has been simulated. Moreover, High-speed photography was used to reveal the macroscopic ignition phenomena. Furthermore, X-ray diffraction (XRD) was used to study the material composition of raw and recovered specimens. The results of the experiments described here clearly show that metal reacts with oxygen and PTFE at atmospheric environment, which reaction produces are metal oxides and metal-fluoropolymers. However, the material only undergoes fluorination reaction at low pressure, which reaction produces only has metal-fluoropolymers. Meanwhile, the reactive ratio of the material increases with the pressure increase, furthermore, the maximum reaction ratio of the material in an atmospheric pressure environment is about 29.5 %, which reaction ratio is 4.7 times more than the pressure of 750 Pa.