The influence of power density of explosive charges on the detonation nanodiamonds yield

Abstract

To determine the dependence of the yield of detonation nanodiamonds (DNDs) on the power of explosives used, a new concept is introduced – the specific capacity (SC) of the explosive, equal to the ratio of the heat of explosion to the unit mass and time. For practical use, 1 kg (or 1 mole) of explosives is advisable for use as a unit of mass, and as a unit of time – 1 microsecond, commensurate with the time of the processes in the chemical reaction zone (СRZ). The chemical reaction time is understood as the time required for the matter to move from the front of the detonation wave to the Chapman-Jouguet plane, where chemical reactions are completed. The detonation velocity of explosives and the pressure of gases in the Chapman-Jouguet plane are related to the specific capacity of explosives. The dependence of DNDs yield on the velocity of detonation and pressure in the Chapman-Jouguet plane is found. Optimum yield of DNDs (> 5 % by mass) is accounted for the specific capacity of explosives from 30000 to 60000 kJ kg s μ, at a detonation velocity from 7250 to 8000 m/sec and pressure in the Chapman-Jouguet plane from 21 to 28 GPa.