Efficient Construction of MXene/V2O5 Nanocomposites for Optimizing the Combustion of Ammonium Perchlorate-Based Composite Solid Propellants

The combustion performance of composite solid propellants(CSPs)significantly affects their application in the field of military andcivil aircraft. Ammonium perchlorate/hydroxyl-terminated polybutadiene(AP/HTPB) composite propellants are one of the common CSPs, and theircombustion performance is mainly affected by AP thermal decomposition.In this work, a simple strategy was put forward to effectively constructMXene-supported vanadium pentoxide nanocomposites (MXene/V2O5, MXV). MXene provided a good loading interface forV(2)O(5) nanoparticles, which made MXV obtain alarge specific surface area and simultaneously improved the catalyticperformance of MXV for AP thermal decomposition. The catalytic experimentresults showed that the decomposition temperature of AP mixed withMXV (MXV-4, 2.0 wt %) was 83.4 & DEG;C lower than that of pure AP.Moreover, the ignition delay of the AP/HTPB propellant was significantlyreduced by 80.4% after adding MXV-4. The burning rate of the propellantwas also increased by 202% under the catalytic action of MXV-4. Basedon the above results, MXV-4 was expected to be an additive for optimizingthe burning process of AP-based composite solid propellants.