关键词: 双基推进剂;热离解;量热器;参数估计

Abstract: The determination of the most probable mechanism function and a numerical method of computing three kinetic parameters of thermal decomposition reaction of double-base propellant by a single non-isothermal DSC curve are reported. Thedata are fitted to the integral, differential and exothermic rate equations by linear least-squares, iterative, combined dichotomous and least-squares methods, respectively. The apparent activation energy, pre-exponential constant, reaction order and the most probable mechanism function (integral form) of thermal decomposition reaction of double-base propellants DP-1 and DP-2 obtained by the logical choice method are 147.85 and 156.06kJ·mol-1 , 1013·6 and 1014·4 s-1,.0.78 and 0.54, 1-(1-α)1/4 and 1-(1-α)1/2, respectively.

Key words: Double base propellant;Thermal dissociation;Calorimeter;Para-meter estimation