High mechanical property low impedance polymer bonded explosive and preparation method thereof

Abstract

The invention relates to a high mechanical property low impedance polymer bonded explosive and a preparation method thereof, and belongs to the technical field of composite energetic materials. The high mechanical property low impedance polymer bonded explosive is prepared from the components of polymer binder polyuria, an energetic material and an explosive performance modifier in a certain proportion. According to the high mechanical property low impedance polymer bonded explosive, a novel binder two-component slow reaction polyuria is introduced, high explosive and the like are effectivelyrecombined, the mechanical property of the energetic compound is obviously improved, and meanwhile the problems of low adhesive force and high acoustic impedance of the high energy composite explosiveare solved. According to the high mechanical property low impedance polymer bonded explosive, the bonding strength between the explosive components, and between the explosive and surrounding containing materials is improved, and important application value is achieved for improvement of the mechanical properties of the energy containing compound and the comprehensive performance of charging. In addition, the high mechanical property low impedance polymer bonded explosive is prepared at normal temperature, waste water, waste liquid or waste gas is not generated, and the advantages of safety, environmental protection, and simple technology are achieved.

Description

technical field [0001] The invention relates to the technical field of composite energetic materials, in particular to a high-mechanical property low-resistance high-polymer bonded explosive and a preparation method thereof. Background technique [0002] The binder used in high polymer bonded explosives is usually an organic high polymer. When used in composite explosives, it is mainly used as a bonding component for bonding, and can also function as a desensitizing agent and an explosive carrier. [0003] There are many types of binders in traditional polymer bonded explosives, which can be roughly divided into three types according to the compound structure: hydrocarbon type, fluorocarbon type and energetic type. (1) Hydrocarbon binders include vinyl addition polymers such as polyisobutylene, polystyrene, polyacrylates; polyvinyl alcohol and its acetals; polyamides and linear polyesters. In addition, there are thermosetting resins, such as unsaturated polyester resins, ep...

AI Technical Summary

Problems solved by technology

(2) Fluorine-containing copolymers F2314, F2311, F2603, etc. belong to the fluorocarbon type, and their main advantages are high thermal stability and chemical stability, but they are difficult to synthesize, expensive, and easy to debond during coating. Used in devices requiring high heat resistance and stability

(3) The energy-containing type is mainly a nitro-containing high polymer, which itself contains energy, but has poor thermal stability, chemical stability and compatibility, and high sensitivity

[0004] In summary, it can be seen that the mechanical properties of explosives prepared with traditional binders limit the performance of high polymer composite explosives, especially the adhesion between the above-mentioned binders and the matrix is ​​still insufficient under high external impact

The material prepared by traditional binder materials has high acoustic impedance, and under the action of external shock waves, it is easy to accept the impact energy from the outside world, which reduces the difficulty of its shock detonation and affects its safety in use.

In addition, in the production process of polymer bonded explosives, in most cases, there are still environmental and safety problems such as waste water, waste gas, waste liquid, and complex processes.