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Metal hydrides are used as additives to improve the reaction energy and destructive effect of PTFE/Al system. PTFE/Al/TiH 2 , PTFE/Al/MgH 2  and PTFE/Al/ZrH 2  are fabricated to compare the effect of multi-metal-hydrides on the material properties. The mechanical response of the materials at wide range of strain rates are investigated through conducting the quasi-static compression tests and split-Hopkinson pressure bar tests. The reaction energy, reaction mechanism, and damage effect are systematically studied by performing oxygen bomb calorimeter measurements, drop-weight experiments, and energetic liners impact damage experiments. The results show that adding TiH 2  and ZrH 2  with 10 wt% content can improve the strength and toughness of PTFE/Al, while MgH 2  plays a negative role in enhancing the mechanical property. MgH 2  has the strongest energy enhancement effect and energy release rate. TiH 2  is the most effective additive in prolonging the reaction time and enhancing the target reaming effect because of its highest gas production rate.

Effect of multi-metal-hydrides on mechanical response and impact damage characteristics of PTFE/Al/XH 2 reactive material