Detonation velocity of model mixed explosive compositions and its dependence on the content of components and charge diameter

This paper presents the results of experimental and computational studies of the influence of a number of factors on the detonation velocity of model mixed explosive compositions: type of explosive and polymer binder, content and particle size of components (explosives, aluminum powder, oxidizer), and charge diameter. It has been found that the detonation velocities of the explosive okfol and mixed compositions based on an active binder with an explosive content of 60–80% (CL-20, HMX) are close to each other. The most marked decrease in detonation velocity is observed for mixed compositions with a mass content of aluminum higher than 20% with increasing oxidizer concentration from 6 to 30%. An increase in the particle size of the explosive and oxidizer leads to an increase in the experimental detonation velocity of the explosive composition. The critical detonation diameter of mixed compositions based on the active binder is 40–80 mm depending on the content of components.