Chemistry of explosives: Explosive materials, mechanics, testing method and identification techniques

The explosion mechanism based on the transformation of the potential energy of explosive materials contained in a closed space into high kinetic and thermal energy after exposed to an external factor. These materials are released and expand suddenly and quickly to affect the surrounding area. Chemical substances or physical mixtures that have the ability to transform quickly and instantaneously from their current state into hot gases as a result of pressure and heat after being exposed to an external stimulus (pressure, heat, electric current, friction and shock). A detonation is a very special type of explosion. It is a rapid chemical reaction, initiated by the heat accompanying a shock compression, which liberates sufficient energy, before any expansion occurs, to sustain the shock wave. A shock wave propagates into the unreacted material at supersonic speed between (۱۵۰۰-۹۰۰۰) m/s.

Keywords:

Explosive materials , black powder , identification techniques