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Forming process for composite explosive

A molding process and explosive technology, applied in the field of explosives and pyrotechnics, can solve the problem of inability to achieve orderly assembly of millimeter-scale explosive component particles, and achieve the effect of orderly assembly

Active Publication Date: 2020-07-28
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing pouring PBX explosives cannot realize the orderly assembly of millimeter-scale explosive component particles, the present invention provides a composite explosive molding process

Method used

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  • Forming process for composite explosive
  • Forming process for composite explosive
  • Forming process for composite explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1 of the present invention is to adopt a kind of composite explosive molding process, the highly active explosive particles ALH 3 Particles and Al particles are injected into the HMX-based cast explosive at intervals. The action process of the present invention will be described below according to the preferred embodiments of the present invention.

[0060] Step 1, determine the implantation time:

[0061] (1) Matrix formula: HMX has a solid content of 86%, the prepolymer is hydroxyl-terminated polybutadiene, dioctyl adipate, the curing agent is 2,4-toluene diisocyanate, and the combination of prepolymer and curing agent The ratio is measured as 1 according to the curing parameter, and the catalyst is triphenylbismuth (the added amount is 0.01% of the total amount).

[0062] (2) Measure the Fourier transform infrared spectrograms of the slurry with different curing times, and obtain the corresponding curing times of 75% and 85% of the conversion rate as 7.5...

Embodiment 2

[0072] Example 2 of the present invention adopts a composite explosive molding process to inject high-activity explosive particles AL particles into HMX-based cast explosives. The action process of the present invention will be described below according to the preferred embodiments of the present invention.

[0073] Step 1, determine the implantation time: refer to Example 1;

[0074] Step 2, preparation of implanted particles: AL particles are pressed by molding powder, the formula is 95% AL / 5% paraffin, and the modeling powder is prepared by water suspension method; the particles are pressed on a press to form particles with a diameter of 0.7 mm and a length of 1 mm;

[0075] Step 3, preparing the matrix: carry out with reference to Example 1;

[0076]Step 4: After adding the curing agent in step 3 for 24 hours, cool the cast explosive matrix to room temperature, and measure the Shore hardness of 18HA; put the cast explosive matrix in a vacuum box, and implant Al particles ...

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Abstract

The invention discloses a forming process for a composite explosive. In order to solve the problem that ordered assembling of particles cannot be realized for cast explosives, a mechanical implantation mode is adopted in the invention; and oxidizing agent or reducing agent particles or composite explosives are implanted into mixed explosives to prepare high-energy cast PBX explosives, initiating explosive devices, propellants and the like. According to the invention, the purpose of orderly assembling particles is achieved, and meanwhile, the problem that bubbles appear in mechanical implantation is solved by utilizing a vacuum process; and by controlling implantation time, it is ensured that no crack defect exists during charging after implantation. The forming process disclosed by the invention comprises the following five steps: determining implantation time, preparing implanted particles, preparing a matrix, implanting the particles, orderly assembling the particles, carrying out curing at high temperature and the like. The forming process of the invention is mainly applied to the fields of initiating explosive devices and explosives.

Description

technical field [0001] The invention belongs to the field of pyrotechnics and explosives, and relates to a molding process for composite explosives, in particular to a process for injecting strong oxidant or strong reducing agent particles into mixed explosives to prepare high-energy castable PBX explosives and pyrotechnics. Background technique [0002] The cast PBX explosive is a polymer-based composite material in which the polymer is the matrix, the elemental explosive is the oxidant, and other compound particles are the reducing agent. The microstructure between the elemental components plays a decisive role in the detonation performance of the composite material. [0003] The reaction of mixed explosives, pyrotechnics, and propellants is related to the structure and scale of the raw materials. The degree of combustion and detonation reaction, the severity of the reaction, and the damage effect can be adjusted through the structure of the raw materials. The document "Op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00
CPCC06B21/0058
Inventor 席鹏冯晓军封雪松陶俊赵娟冯博薛乐星潘文
Owner XIAN MODERN CHEM RES INST
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