Effect of modification of tetryl detonation nanodiamonds on combustion of model paste-like propellants

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$^{\circ}$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$^{\circ}$C at 100 atm.