Thermoanalytical investigation of relative reactivity of some nitrate oxidants in tin-fueled pyrotechnic systems
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- Hosseini, S.G. & Eslami, A. J Therm Anal Calorim (2010) 101: 1111. doi:10.1007/s10973-010-0813-x
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In order to investigate relative reactivity of different oxidants in solid-state reactions of pyrotechnic mixtures, thermal properties of Sn + Sr(NO3)2, Sn + Ba(NO3)2, and Sn + KNO3 pyrotechnic systems have been studied by means of TG, DTA, and DSC methods and the results compared with those of pure oxidants. The apparent activation energy (E), ΔG#, ΔH#, and ΔS# of the combustion processes were obtained from the DSC experiments. The results showed that the nature of oxidant has a significant effect on ignition temperature, and the kinetic of the pyrotechnic mixtures’ reactions, and the relative reactivity of these mixtures was found to obey in the following order: Sn + Sr(NO3)2 > Sn + Ba(NO3)2 > Sn + KNO3.