Thermal Behaviour and Kinetic Parameters of Ternary Mg+SrO 2 +DNAN Pyrotechnic Compositions
Résumé
Thermal analyses of raw components are necessary to understand the behaviour of pyrotechnic compositions they are incorporated in. Ternary compositions containing strontium peroxide, magnesium and 2, 4-dinitroanisole (DNAN) are studied thermally using TGA and DSC. Activation energies are given for the components using three different methods. Thermal behaviour of strontium peroxide is focused on as little scientific literature exists about it: heat capacity is measured, and a thermal evolution model is given. Effects of magnesium particles size is also studied. The results obtained show that the presence of DNAN decreases activation energies of all reactions within the ternary compositions. Decreasing magnesium granulometry only decreases activation energy of magnesium oxidation, but does not play a role on other reactions.