期刊
THERMOCHIMICA ACTA
卷 614, 期 -, 页码 85-92出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2015.06.019
关键词
Dihydroxylammonium 5,5 '-bistetrazole-1,1 '-diolate (TKX-50); Thermal decomposition; Enthalpy of formation; Burning behavior and flame structure; Surface temperature; Temperature dependence of vapor pressure
资金
- Ministry of Education and Science of Russian Federation
The physico-chemical characterization (thermal decomposition under non- and isothermal conditions, enthalpy of formation, burning behavior and flame structure) of a new explosive dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate is detailed. Combustion studies have shown that TKX-50 burns slightly faster than HMX and approaches the burning rate of CL-20. The combustion of TKX-50 has been shown to obey mechanism with the leading reaction in the condensed phase. The rates of TKX-50 decomposition in both solid and liquid phases proved to be slightly higher than the corresponding rates of decomposition of RDX. Decomposition of TKX-50 is determined by decomposition of free hydroxylamine formed in the reaction of dissociation of the salt. An intermediate decomposition product is ammonium salt of 5,5'-bis (2-hydroxytetrazole), which further decomposes in the second stage at elevated temperatures. The enthalpy of formation of TKX-50 has been measured with the help of bomb calorimetry, however the resulting value is quite different from the enthalpy reported earlier. (C) 2015 Elsevier B.V. All rights reserved.
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