Preparation method of pressed aluminum-containing explosive

A technology of explosives and aluminum powder, which is applied in the field of preparation of aluminum-containing explosives, can solve the problems of insufficient contact between aluminum powder and main explosives, incomplete reaction, low formability and low energy output of mixed explosives, and achieve improved reaction completeness, Improved moldability and maximized energy output

Inactive Publication Date: 2015-06-24
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The traditional direct method and spray granulation process are prepared by mechanically mixing conventional high-energy explosives in the form of solid particles with aluminum powder, binder and desensitizing agent solution. During the preparat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment is implemented with reference to the following composition by weight percentage: 30.0% aluminum powder, 65% DNTF, 2.5% paraffin, 2.5% ethylene-vinyl acetate copolymer (EVA) and 0.5% stearic acid as a surfactant.

[0016] The steps of this embodiment are as follows:

[0017] (1) Dissolving DNTF: Weigh 65g of DNTF, place it in a 500mL flask, add 130g of ethyl acetate, and stir in a water bath at a temperature of 50℃~60℃ for 30 minutes at a constant temperature until the DNTF is completely dissolved.

[0018] (2) Dissolving the bonding agent: When the DNTF is dissolved, add 0.5% surfactant stearic acid in a water bath at 50°C to 60°C, and stir for 10 minutes until the bonding agent is completely dissolved.

[0019] (3) Coated aluminum powder

[0020] Weigh 30g of aluminum powder and slowly add the above-mentioned solution containing DNTF, stirring while adding, until the addition is complete.

[0021] (4) Granulation

[0022] Add 2.5g of a binder in petroleum ether and...

Embodiment 2

[0024] This embodiment is implemented with reference to the following weight percentage composition: 30.0% aluminum powder, 65% DNTF, 2.5% paraffin, 2.5% ethylene-vinyl acetate copolymer (EVA), and 0.5% surfactant lecithin. This embodiment is implemented with reference to Embodiment 1.

Embodiment 3

[0026] This embodiment is implemented with reference to the following weight percentage composition: 30.0% aluminum powder, 65% DNTF, 2.5% paraffin, 2.5% ethylene-vinyl acetate copolymer (EVA) and 0.3% surfactant stearic acid. This embodiment is implemented with reference to Embodiment 1.

[0027] Table 1 Example performance data

[0028] Explosive

[0029] It can be seen from the above table that the aluminum-containing explosive prepared by the method of the present invention has low sensitivity. Compared with the prior art, the explosion heat is high, the molding density is high, and the safety is good.

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PUM

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Abstract

The invention provides a preparation method of a pressed aluminum-containing explosive. According to the preparation method, the pressed aluminum-containing explosive is mainly prepared from 3,4-dinitrofurazanfuroxan and aluminite through direct granulation in the presence of a small amount of additives such as a binder and a desensitizing agent. The method comprises the following steps: firstly, dissolving 3,4-dinitrofurazanfuroxan by using ethyl acetate at a temperature of 50-60 DEG C; then, adding a surfactant, stirring for 20min, and adding the solution into aluminum powder while stirring; and finally, adding a binder and a desensitizing agent solution, stirring for 30min; after the obtained material becomes dough-shaped, sieving so as to form particles with a particle size of 1-2 mm, and drying, thus obtaining the aluminum-containing explosive modeling powder. By using the preparation method of an aluminum-containing explosive provided by the invention, a mixed explosive with good formability and high detonation velocity can be prepared, so that defects in traditional direct preparation methods in the background art are overcome.

Description

Technical field [0001] The present invention is a method for preparing press-packed aluminum-containing explosives, in particular to a method for preparing aluminum-containing explosives containing 3,4-dinitrofurazanyl furazan oxide (DNTF). Background technique [0002] 3,4-Dinitrofurazanylfuroxan (DNTF) has high detonation velocity and low mechanical sensitivity, and is considered to be the star of high energy density compounds researched and applied in recent years. Because DNTF has a relatively low melting point, it is often used as a carrier for melt-cast explosives, and its preparation method has not been studied in press-packed explosives. The traditional direct method and spray granulation process are prepared by mechanically mixing conventional high-energy explosives in the form of solid particles with aluminum powder, binder, and desensitizer solution. During the preparation process, the contact between aluminum powder and the main explosive is not sufficient. During th...

Claims

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Application Information

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IPC IPC(8): C06B25/34
Inventor 王彩玲王晓峰刁小强姚李娜方伟戴致鑫李文祥韩仲熙陶俊黄亚峰张为鹏
Owner XIAN MODERN CHEM RES INST
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