Resumo

ANDRADE, J. et al. Determination of kinetics parameters of thermal decomposition to BS and BD propellants. Eclet. Quím. [online]. 2007, vol.32, n.3, pp. 45-50. ISSN 0100-4670.  http://dx.doi.org/10.1590/S0100-46702007000300007.

The purpose of this work was to determine the kinetics parameters of the thermal decomposition of a sample single-base (BS) and double-base (BD) propellants. The experimental data obtained by differential scanning calorimetry (DSC) were adjusted to the pseudo-first order kinetic model of Flynn, Wall and Ozawa. The respective parameters obtained are: BS REX 1200 (E_a) (2.3 ± 0.2) 10² kJ mol^-1 and (A) 1.34 10²⁵ min^-1; BD-111 (E_a) (1.6 ± 0.1) 10² kJ mol^-1 and (A) 3.31 10¹⁷ min^-1. IR spectrum has confirmed the presence of salicilate in the double-base (BD) propellant and some correlations corroborate the conclusions about the decomposition mechanism.

Palavras-chave : kinetics; thermal analysis; propellants.