Effect of Modification of Tetryl Detonation Nanodiamonds on Combustion of Model Paste-Like Propellants
S. Yu. Naryzhnyi, A. S. Kozlov, V. Yu. Dolmatov, V. V. Fomenko, G. V. Semashkin, V. A. Marchukov, S. V. Desyatov
Special Design and Technology Bureau "Tekhnolog", Saint-Petersburg, 192076 Russia
Keywords: propellant, composite propellant, paste-like propellant, detonation nanodiamonds, oxidizer modification, tetryl, burning rate, specific impulse
Abstract
Detonation nanodiamonds (DND) represent a unique material combining the properties of a rather passive diamond core with an active carbon shell. The effect of disaggregated DND (T-DND) and detonation carbon (diamond batch mixture (T-DBM)) obtained in an explosion of tetryl (2,4,6-trinitro-N-methyl-N-nitroaniline) and preliminary deposited onto ammonium perchlorate granules in the process of its crystallization on the burning rate of a paste-like propellant is studied. T-DND is preliminary cured at 430 °C for two hours. The method used in the present study is chemical deposition (forced crystallization) of ammonium perchlorate from a saturated aqueous solution also containing T-DND or T-DBM by isopropanol in the ratio of 1 : 2. The burning rates of compositions are determined as functions of pressure in the range up to 1 200 atm. It is demonstrated that the use of detonation nanodiamonds and diamond batch mixture leads to an increase in the propellant burning rate approximately by 26 and 15 %, respectively, while the temperature of combustion products decreases approximately by »240 °C at 100 atm.
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