Citation

Zhang JQ, Gao HX, Ji TZ, Xu KZ, Hu RZ. J. Hazard. Mater. 2011; 193: 183-187.

Affiliation

Key Laboratory of Applied Physics and Chemistry in Space, Ministry of Education, Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710072, China.

Copyright

(Copyright © 2011, Elsevier Publishing)

DOI

10.1016/j.jhazmat.2011.07.048

PMID

21820242

Abstract

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 C(p) with temperature was obtained. The standard molar heat capacity of GAP/CL-20/Al/N-100/PCA/auxiliaries mixture was 1.225Jmol(-1)K(-1) at 298.15K. With the help of the peak temperature (T(p)) from the non-isothermal DTG curves of the mixture at different heating rates (β), the apparent activation energy (E(k) and E(o)) and pre-exponential constant (A(K)) of thermal decomposition reaction obtained by Kissinger's method and Ozawa's method. Using density (ρ) and thermal conductivity (λ), the decomposition heat (Q(d), taking half-explosion heat), Zhang-Hu-Xie-Li's formula, the values (T(e0) and T(p0)) of T(e) and T(p) corresponding to β→0, thermal explosion temperature (T(be) and T(bp)), adiabatic time-to-explosion (t(TIad)), 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)=441.64K, T(bp)=461.66K, t(Tlad)=78.0s (n=2), t(Tlad)=74.87s (n=1), t(Tlad)=71.85s (n=0), H(50)=21.33cm.

Language: en