Preparation and combustion performance of molecular perovskite energetic material DAP-4-based composite with Titanium powder

Micron-sized titanium particles have potential applications as energetic metal high-enthalpy fuel materials. The molecular perovskite energetic material DAP-4 (H 2 dabco)[NH 4 (ClO 4 ) 3 ] is a potential high-energy oxidizer in solid rocket propellants. To explore the combustion mechanism and energy output of DAP-4-based Ti composites, the combustion characteristics of DAP-4/Ti and F/DAP-4/Ti were studied by electrode ignition device. The results show that the burning rate of DAP-4 can be adjusted by controlling the mass ratio of DAP-4/Ti. After adding Ti into DAP-4, the heat release, self-sustaining combustion time and flame front propagation velocity are greatly increased to 9,113 J g −1 , 265 ms and 0.225 mm ms −1 , respectively, better than those of DAP-4. With Ti added, the decomposition peak temperature of F/DAP-4/Ti dropped from 381.5 to 360.4 ℃. The experimental results contribute to a better understanding of the chemical reaction mechanism and energy release characteristics of DAP-4-based propellants containing Ti.