A kind of antiflame agent mixed explosive and preparation method thereof

Abstract

A flame suppressant mixed explosive and a preparation method thereof, using RDX as the main body of the explosive, using sodium fluoroaluminate as the flame suppressant, and using 202 rubber and shellac or polyvinyl acetate (PVAc) and shellac as the bond Graphite is used as a desensitizing agent, so that the flame suppressant mixed explosive of the present invention takes into account the ability of this type of explosive to eliminate flames under the premise of ensuring normal detonation and normal detonation output. After testing, the fluidity of the present invention can reach 20s, and the bulk density can reach 0.87-0.88g / cm 3 , "GJB772A-97 402.3 Bulk Density Standard Container Method", 20-mesh to 80-mesh sieves ≥ 95%, and 20-mesh sieves and 80-mesh sieves can reach 15-20%.

Description

technical field [0001] The invention belongs to the technical field of fire and explosives, and in particular relates to a flame suppressant mixed explosive and a preparation method thereof. Background technique [0002] Explosives are widely used in the military, and are also widely used in mining, road construction, water conservancy, engineering blasting, metal processing, etc. in civilian use. Among them, emulsion explosives are mainly used in domestic secondary and tertiary coal mining. Requirements for safety: Flame suppressants with different components and contents are added in an appropriate amount. The addition of flame suppressants can eliminate the flame when the explosive explodes, avoiding the flame igniting the gas, and causing an explosion, which improves the safety of the explosive in the civilian field. [0003] Since the 1980s, with the development of blasting technology and civil explosive equipment, users' demand for different types and specifications of...

AI Technical Summary

Problems solved by technology

In the development of civil blasting explosives, the flame suppressant class mixed explosive research is increasing day by day. The conventional flame suppressant in the prior art has cryolite and potassium chloride, and when potassium chloride is added in the mixed explosive formula as the flame suppressant, because of its It is difficult to cover, and the dry mixing process is commonly used, but due to the deficiency of the dry mixing process itself, the detonation energy of the prepared mixed explosive fluctuates greatly, and the ability to eliminate flames is insufficient, which is easy to cause gas explosion

However, cryolite (also known as sodium fluoroaluminate) is difficult to fully mix with the main explosive because of its fine particles, which limits its wide application in flame suppressant mixed explosives.

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