The strontium complex nitrates of carbohydrazide as a non-azide gas generator for safer driving - the thermal behavior of the Sr complex with variousoxidizing agents

As a new azide-free gas generant, the thermal behavior of the Sr complex ni trate of carbohydrazide was investigated in the mixed system with various o xidizing agents (KClO4, KBrO3, Sr(NO3)(2), KNO3). For the differential ther mal analysis, the initial temperature of the reaction of mixtures with KBrO 3 was lower than that of the pure complex, and the reaction was very vigoro us. The reactions with oxidizing agents except for KBrO3 were thought to pr oceed moderately. The heat of combustion at the stoichiometric composition increased according to the tendency of the calculated theoretical value bas ed on the chemical stoichiometric equation. The burning rate of the KBrO3 s ystem was very high compared with the other mixed systems, and was controll ed by the rate of reaction. The pressure dependence was high in the case of using the nitrate as an oxidizing agent. In all the systems, N-2 and CO2 g ases account for 99% of all the evolved gases during the combustion. In the case of using an oxidizing agent containing a halogen, the halogen ion was only slightly detected during the combustion.