Non-isothermal decomposition kinetics, heat capacity and thermal safety of 37.2/44/16/2.2/0.2/0.4-GAP/CL-20/Al/N-100/PCA/auxiliaries mixture

The specific heat capacity (C(p)) of 37.2/44/16/2.2/0.2/0.4-GAP/CL-20/Al/N-100/PCA/auxiliaries mixture was determined with the continuous C(p) mode of microcalorimeter. The equation of Cp with temperature was obtained. The standard molar heat capacity of GAP/CL-20/Al/N-100/PCA/auxiliaries mixture was 1.225 J mol(-1) K(-1) at 298.15 K. With the help of the peak temperature (TO from the non-isothermal DTG curves of the mixture at different heating rates (13), the apparent activation energy (E(k) and E.) and pre-exponential constant (A(K)) of thermal decomposition reaction obtained by Kissinger's method and Ozawa's method. Using density (p) and thermal conductivity (lambda), the decomposition heat (Q(d), taking half-explosion heat), Zhang-Hu-Xie-Li's formula, the values (T(eo) and T(po)) of T(e) and T(p) corresponding to beta -> 0, thermal explosion temperature (T(be) and T(bp)), adiabatic time-to-explosion (t(Tlad)), 50% drop height (H(50)) of impact sensitivity, and critical temperature of hot-spot initiation (T(cr,hot spot)) of thermal explosion of the mixture were calculated. The following results of evaluating the thermal safety of the mixture were obtained: T(be) = 441.64 K, T(bp) = 461.66 K, t(Tlad) = 78.0 s (n = 2), t(Tlad) = 74.87s (n = 1), t(Tlad) = 71.85 s (n = 0), H(50) = 21.33 cm. (C) 2011 Elsevier B.V. All rights reserved.