Thermochemical analysis of combustion process of gas generants containing sodium azide

Thermochemical calculation, calorimetric experiments and temperature measurements were performed for gas generating mixtures containing sodium azide and various oxidisers (KNO3, CuO, MoS2, S, C6Cl6, polytetrafluoroethylene and chlorinated polyvinyl chloride). An influence of the kind of an oxidiser and its contents in the mixture on the heat of reactions, the adiabatic combustion temperature and the composition of combustion products was determined. Mixtures producing low combustion temperatures as well as effective ways of the temperature minimisation were chosen.