The thermal decomposition of ammonium perchlorate (AP)/hydroxyl-terminated-polybutadiene (HTPB), the AP/HTPB solid propellant,
was studied at different heating rates in dynamic nitrogen atmosphere. The exothermic reaction kinetics was studied by differential
scanning calorimetry (DSC) in non-isothermal conditions. The Arrhenius parameters were estimated according to the Ozawa method.
The calculated activation energy was 134.5 kJ mol-1, the pre-exponential factor, A, was 2.04×1010 min-1 and the reaction order for the global composite decomposition was estimated in 0.7 by the kinetic Shimadzu software based
on the Ozawa method. The Kissinger method for obtaining the activation energy value was also used for comparison. These results
are discussed here.