Jiri Pachman and Jakub Selesovsky
p.380-383
Abstract
Dynamic mechanical analysis has been applied to characterize frequency dependency of transitions observed in double base solid rocket propellant. Two transitions were observed one designated α at temperature interval from 213 to 273 K with peak in tan δ around 258 K and second above room temperature designated β with peak in tan δ around 338. Apparent activation energies were calculated from peak and onset values of dynamic properties measured at frequencies from 0.1 to 20 Hz. The activation energies found for the α transition were higher than for the β transition. Absolute values of these activation energies varied significantly depending on the dynamic property used for evaluation.
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Keywords
DMA, dynamic mechanical analysis, propellant, DBP, transition
