Non-isothermal decomposition kinetics of copper azide nanowire array

Abstract

Copper azide nanowire array (CA-NW) was a new primary explosive with high orientation. Thermal decomposition behaviour of CA-NW was studied to evaluate its thermal safety. Thermal decomposition reaction was observed by DSC and TG-DTG methods. Kissinger s and Ozawa s methods were used to obtain the kinetic parameters, such as apparent activation energy (Ek and Eo) and pre-exponential factor (Ak). The mechanism functions of thermal decomposition, self-accelerating decomposition temperature (T sadt ), critical temperature of thermal explosion (Tbpo) were obtained. Results show that for CA-NW, Ek = 94.08kJmol-1, Ak = 8.32×107min-1, Eo = 97.09 kJmol-1, T sadt = 456.6K, and Tbpo = 476.6K.