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A kind of preparation method of press-packed aluminum-containing explosive

A technology for explosives and aluminum powder, applied in the field of preparation of aluminum-containing explosives, can solve the problems of incomplete reaction, insufficient contact between aluminum powder and main explosive, low formability and energy output of mixed explosives, etc. The effect of reaction completeness and energy output maximization

Inactive Publication Date: 2017-06-13
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 preparation process, the contact between aluminum powder and the main explosive is not sufficient, and the explosive During the bombardment reaction, the reaction is not complete, which makes the formability and energy output of the mixed explosive low

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 weight percentage composition: 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 mechanically in a water bath at a temperature of 50℃~60℃ for 30 minutes 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, and then set aside.

[0019] (3) Coated aluminum powder

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

[0021] (4) Granulation

[0022] Add 2.5 g of the binder in petroleum ethe...

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 composition by weight percentage: 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 current technology Example 1 Example 2 Example 3 method Charge density%94.6％96.5％94.5％94.8％ GJB772A 401.2 Hot J / g6982749571567205 GJB772A 701.1 Impact sensitivity%1082020 GJB772A-97 601.1 Friction sensitivity%8103616 GJB772A-97 602.1

[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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Abstract

The invention provides a method for preparing a press-packed aluminum-containing explosive, which uses 3,4-dinitrofurazanylfuroxan and aluminum powder as main raw materials, and directly Method granulation. The method first dissolves 3,4-dinitrofurazanylfuroxan in ethyl acetate at a temperature of 50°C to 60°C, then adds a surfactant, stirs for 20 minutes, and then adds the above solution to the aluminum powder. Stir as you add. Finally, add the binder and desensitizing agent solution and stir for 30 minutes. After the whole material forms a paste, it is sieved to form particles of 1 mm to 2 mm, and dried to obtain the aluminum-containing explosive molding powder. The mixed explosive with good formability and high detonation velocity can be prepared by adopting the preparation method of the aluminum-containing explosive provided by the invention, which overcomes the defects of the traditional direct preparation method in the background technology.

Description

Technical field [0001] The 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 molten-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 insensitive agent solution. During the preparation process, the contact between aluminum powder and the main explosive is not sufficient, and the expl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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