Thermal and Spectroscopic Measurements of Some Energetic Compositions and Corresponding Aerosols Obtained
T. Zecheru, A. Lungu, P.-Z. Iordache, T. Rotariu
Keywords: combustion, pyrotechnics, activation energy, nonisothermal conditions
Abstract
Studies on specific thermochemical processes contribute to the understanding of combustion processes and, meanwhile, to the calculus of the safety characteristics and the systems design parameters. In this paper, five different compositions have been studied through TGA and DTA. The reaction rate constants and the activation energies have been determined. Also, the solid combustion products obtained have been evaluated through SEM, EDX, and XPS. Nonisothermal kinetic analyses performed yield results that prove an important difference among the first fire compositions, where the activation energies are considerable, up to 400 kJ/mol, in comparison with the activation energies of the flare compositions, which are lower, 150–250 kJ/mol.
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