Synergistic interaction between AP and HMX

Abstract Based on the condensed-phase mechanism and thermolysis experimental results, the synergistic interactions between AP and HMX in NEPE propellants are studied from the two viewpoints of molecular structure and chemical reaction. Related to bond polarity, formal charges, chain reaction theory and the systematic comparison of solid monopropellant combustion and modeling, the “linkage-mutualism” mechanism is proposed. That implies between AP and HMX, the heat released is interlocked while the species produced are mixed and reacting with each other in the combustion wave. AP content and particle size can influence the mechanism, therefore will have significant effects on the ignition and combustion characteristics of NEPE propellants.