Thermoanalytical investigation on some boron–fuelled binary pyrotechnic systems

Effect of particle size on thermal decomposition of nitrocellulose

“…Compatibility studies of different materials by DSC, DTA and TG have been carried out for several years [7][8][9][10][11][12]. Kinetic studies have become a crucial point in thermal analysis, in which the main purpose is to determine the mechanism of pyrolysis reaction and to calculate the parameters of the Arrhenius equation.…”

The effect of 5-amino-1H-tetrazole on the combustion performance and ignition capability of boron/potassium nitrate igniter

“…The endothermic peak around 330°C belongs to the melting of KNO 3 . The decomposition of KNO 3 occurs above 500°C in two partially overlapping stages (500-770 and 770-1,000°C) [3,16]. The thermal decomposition mechanism could be described as following:…”

“…In this study, Kissinger approach [3,18,19] was used to determine the kinetic parameters of thermal decomposition process. For a linear heating procedure, the rate equation can be written as:…”

“…In general, ignition process would benefit from highly pressurized and hot condensed particles producing high-energy efflux at the igniter vent [1,2]. An excellent igniter composition must have low sensitivity, and could produce hot gases and glowing particles in a short time [3,4]. Boron/potassium nitrate (B/KNO 3 ) mixture is used extensively in ignition systems of rocket motors and gas generators due to its high ignition temperature (*500°C) and high combustion heat (*7,000 kJ g -1 ).…”

“…Boron/potassium nitrate (B/KNO 3 ) mixture is used extensively in ignition systems of rocket motors and gas generators due to its high ignition temperature (*500°C) and high combustion heat (*7,000 kJ g -1 ). However, the combustion of B/KNO 3 igniter produces a small amount of gas, which results in long ignition delay [2] and unstable ignition [5].…”