|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Combustion behavior and thermal decomposition of novel oxygen-rich triazolylfurazansстатья
- Авторы: Hoang T.H., Sinditskii V.P., Semyakin S.S., Sheremetev A.B.
- Сборник: Proc. 22nd Seminar of the New Trends in Research of Energetic Materials
- Том: 2
- Год издания: 2019
- Место издания: University of Pardubice Pardubice, Czech Republic
- Первая страница: 646
- Последняя страница: 657
- Аннотация: Combustion behavior and thermal decomposition of 3-nitro-4-[1-(trinitromethyl)-1H-1,2,4-triazol-3-yl]furazan (1) and 3-[(1-fluorodinitromethyl)-1H-1,2,4-triazol-3-yl]-4-nitrofurazan (2), 3,3’-azo-4,4’-bis-[1-(trinitromethyl)-1H-1,2,4-triazol-3-yl]furazan (3), which may have potential use as explosive and propellant ingredient, has been studied. The decomposition rate constants of compound 1, obtained under isothermal and nonisothermal conditions, are well described by Arrhenius equation with activation energy 129.5 kJ/mol in a wide temperature range of 110-182°C. The replacement of one nitro group in the trinitromethyl moiety with fluorine leads to a marked increase in the thermostability of compound 2, while the activation energy increases to 143-153 kJ/mol. An analysis of thermocouple data shows that the burning rate of triazoles 2 and 3 depends on the rate of heat release in the condensed phase. The increased stability of the fluoro analog 2 causes a decrease in the depth of its decomposition in the melt and shifts the leading reaction of its combustion into the gas phase. Thus, compound 2 burns according to the mechanism characteristic of volatile energetic compounds, whereas the leading reaction of combustion of trinitrocompounds 1 and 3 is in the condensed phase.
- Добавил в систему: Синдицкий Валерий Петрович