Nonisothermal decomposition kinetics, specific heat capacity, and adiabatic time-to-explosion of Zn(NH)(FOX-7).

A new energetic zinc-FOX-7 complex, Zn(NH)(FOX-7) (FOX-7 = 1,1-diamino-2,2-dinitroethylene), was first synthesized. Thermal decomposition behavior and nonisothermal decomposition kinetics of Zn(NH)(FOX-7) were studied with DSC and TG/DTG methods. The kinetic equation obtained is $$ \frac{{{\text{d}}\alpha }}{{{\text{d}}T}} = \frac{{10^{13.99} }}{\beta }4(1 - \alpha )[ - \ln (1 - \alpha )]^{{{3 \mathord{\left/ {\vphantom {3 4}} \right. \kern-0pt} 4}}} \exp ( - 1.448 \times 10^{5} /RT) $$ . The self-accelerating decomposition temperature ( T) and critical temperature of thermal explosion ( T) are 183.2 and 195.8 °C, respectively. The specific-heat capacity of Zn(NH)(FOX-7) was determined with a micro-DSC method, and the molar-heat capacity is 454.6 J mol K at 298.15 K. Adiabatic time-to-explosion was also estimated to be about 20 s. The thermal stability of Zn(NH)(FOX-7) is good and higher than that of analogous Cu(NH)(FOX-7). [ABSTRACT FROM AUTHOR]