Method for preparing nano metallized explosive

Abstract

The invention discloses a method for preparing a nano metallized explosive. The method for preparingthe nano metallized explosivecomprises the following steps that nano metal powders, an explosive, afluoropolymer, and a binder are added into a mixing tank and sealed, then the mixing tank is placed on a vibration table,a power sourceis turned on, vibration frequency,amplitude, and vibration time are adjusted, mixing is conducted after a start button is activated, mixture of the nano metal powders, the explosive, the fluoropolymer, and the binder is completed according to a set mixing time to form a composite slurry, and a nanometalized explosive composite is obtained after drying. According to the method for preparingthe nano metallized explosive, in order to improve the energy release characteristics of metallized explosives, the nano metal powders and the fluoropolymer are used as fillers to improve capacity and pressure output;at the same time, for the high viscosity and easy agglomeration characteristics of the nano metal powders, the nano metallized explosive is prepared by adopting acoustic resonance mixing technology to achieve uniform mixing between the nano metal powder and explosive particles.

Description

technical field [0001] The invention relates to the technical field of preparation of energetic materials, in particular to a method for preparing nanometer metallized explosives by acoustic resonance mixing. Background technique [0002] Metallized explosives have become the preferred material for weapons and ammunition due to their high calorific value, long duration of shock wave overpressure and diversification of damage effects. Among them, metal powders such as magnesium, aluminum, boron, etc. mainly react with detonation products and oxygen in the environment, and release heat to maintain a high-pressure and high-temperature state for a long time, increasing the damage effect of weapons and ammunition on targets. Metal powder mainly reacts with explosive products and oxygen in the environment to release energy in the secondary reaction process. However, in practical applications, due to the limited oxygen in the explosive products and the environment, a large amount ...

AI Technical Summary

Problems solved by technology

However, in practical applications, it has been found that the problem of nano-metal powder is serious surface oxidation and low active content. When the particle size of aluminum powder is 50nm, the active aluminum content is about 50%. In recent years, this problem has been solved by surface coating. Technology can be basically solved

Nano-metal powder has high activity and is easy to react and deactivate in water. Therefore, the current application possibility of water suspension granulation technology for nano-metallized explosives is not high.

Mechanical stirring is the most commonly used mixing method, and it is a very effective method for mixing micron metal powder and explosives, but when the particle size of the metal powder is reduced to submicron (particle size less than 1 micron), especially when the nanometer size, the metal powder agglomerates, The uniform mixing of explosives and metal powder cannot be achieved even if the stirring time is increased several times

The screw mixing method is more effective for compounds with relatively low viscosity and solid content, but for explosive compounds filled with high solid particles such as metallized explosives, it is difficult to ensure the uniformity of component mixing and the safety of the mixing preparation process. is also an important factor limiting its application