MECHANICAL SENSITIVITY OF METALLIZED EXPLOSIVE NANOCOMPOSITES

摘要

Mechanical sensitivity of HE/Al mixtures depending granulometric composition, component mass ratio and production techniques was studied. Effect of reactivity of Al nano-sized particles, their coating by polymers on sensitivity of binary compositions was also investigated. It was shown, that RDX and HMX sensitivity does not depend on the size of HE particles. Al addition to HMX increases sensitivity of mixtures. Explosives containing nano-sized particles of Al are characterized by higher sensitivity in contrast with those based on commercial Al. Encapsulation of aluminum particles by polymeric materials does not result in decrease of metallized explosives sensitivity. It was found that the highest sensitivity posses the composites containing freshly prepared nano-sized particles of Al. On sensitivity they are at the level of such primary explosive as lead azide. Physical interpretation of the obtained results is given in the paper.