Explanation
It is also called primary explosive. It is a kind of sensitive explosive that is easily excited by the external low-energy irritation energy to produce combustion or explosion and can quickly transformation into detonation. Excited by external excitation energy such as heat, electricity, light, machinery, shock waves, etc. It has the characteristics of high sensitivity and rapid transformation of combustion into detonation, so it is used to detonate insensitive heavy explosives. Widely used as the starting charge in various initiating explosive devices. Common primary explosive include lead azide, lead styphnate, nickel hydrazine nitrate, thunderbolt mercury, etc. In addition to having sufficient initiating capacity and appropriate specific sensitivity, primary explosive must also ensure a high degree of safety, good stability, compatibility and charge processability during production, storage and use. primary explosive can be divided into three types according to composition: single substance, mixed and complex primary explosive single compound primary explosive is a single compound containing characteristic explosion groups. Such as diazides, azides, long chain or cyclic polynitrides, heavy metal salts of nitrophenols, and fulminates. mixing primary explosive is composed of two or more single compound primary explosive or primary explosive mixed with combustible agent, oxidizer and other components, such as percussion composition or acupuncture explosive excited by acupuncture or impact, ignition composition excited by electric energy, etc. complex primary explosive is a newly developed safety insensitive primary explosive.
Classification
Energy Materials -> Energetic materials -> Pyrotechnic agents