Burning Characteristics and Sensitivity Characteristics of Some Guanidinium 1,5′-bis-1H-Tetrazolate/Metal Oxide Mixtures as Candidate Gas Generating Agent

Burning characteristics and sensitivity characteristics of some stoichiometric ratio guanidinium 1,5′‐bis‐1H‐tetrazolate (G15B)/metal oxide mixtures were examined. The linear burning rates of the G15B/CuO mixture were higher compared to other G15B/metal oxide mixtures and 5‐amino‐1H‐tetrazole(5‐ATZ)/Sr(NO3)2 mixture, although the average rate of pressure rise during the closed vessel test was lower compared to 5‐ATZ/Sr(NO3)2 mixture. The temperature rise for both G15B/CuO and G15B/MnO2 mixtures was considerably lower than that of 5‐ATZ/Sr(NO3)2 mixture. G15B/Fe2O3 mixture was the most insensitive among G15B/metal oxide mixtures during the drop hammer test, while G15B/CuO mixture was the second most insensitive. All G15B/metal oxide mixtures were insensitive against friction and electric spark discharge (ESD). Four seconds ignition temperature for G15B/CuO mixture was over 100 K lower than that of 5‐ATZ/Sr(NO3)2 mixture, but the apparent activation energy for ignition was higher. Among the G15B/metal oxide mixtures studied, G15B/CuO mixture showed the fastest burning rate, while it showed a relatively low temperature rise and low sensitivity. G15B/ZnO did not burn at all.