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Preparation method of high-energy insensitive aluminum-containing explosive

An insensitive and high-energy technology, applied in explosives processing equipment, explosives, explosives composite components, etc., can solve the problems of high friction, impact and shock wave sensitivity, low volumetric combustion enthalpy and energy density, and limited applications, achieving less solvent, The effect of light droplet drift and low cost

Active Publication Date: 2021-12-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the friction, impact and shock wave sensitivity of HMX, CL-20 and RDX are high, and the shortcomings of volumetric combustion enthalpy and low energy density limit their application in the military field

Method used

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  • Preparation method of high-energy insensitive aluminum-containing explosive
  • Preparation method of high-energy insensitive aluminum-containing explosive
  • Preparation method of high-energy insensitive aluminum-containing explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of high-energy insensitivity aluminum-containing explosives, comprising the following steps:

[0027] Step 1, get 0.04g nitrocellulose (NC), 1g RDX and 0.58g ammonium perchlorate (AP) and dissolve in the mixed solvent (4mL) of acetone and DMF (volume ratio 1:1), form mixed solution;

[0028] Step 2: Take 0.42g of nano-Al powder and add it to the mixed solution, and disperse it ultrasonically for 40 minutes to form a stable suspension;

[0029] Step 3. Inhale the suspension with a 5mL syringe with a needle, fix it on the electrostatic sprayer, receive it with an aluminum foil baffle, connect the positive pole to the needle of the syringe, and connect the negative pole to the aluminum foil baffle. 0.05ml / min, the negative pressure is controlled at -12kV, and the positive pressure is controlled at 12kV, so that the suspension forms a stable spray with a cone angle of 30° at the needle nozzle, and RDX / AP / NC / Al aluminum-containing explosives are obtained...

Embodiment 2

[0032] A preparation method of high-energy insensitivity aluminum-containing explosives, comprising the following steps:

[0033] Step 1, get 0.04g nitrocellulose (NC), 1g RDX and 0.58g ammonium perchlorate (AP) and dissolve in the mixed solvent (4mL) of acetone and DMF (volume ratio 1:1), form mixed solution;

[0034] Step 2: Add 5g of nano-aluminum powder and 100g of dopamine solution into a supercritical carbon dioxide reactor, fill with carbon dioxide, stir for 45min at a temperature of 40°C and a pressure of 15MPa, release the pressure, and separate to obtain pretreated nano-aluminum powder ; Add 0.42g of pretreated nano-Al powder into the mixed solution, ultrasonically disperse for 40min, and form a stable suspension; the dopamine solution is prepared with distilled water, which contains 1mg / mL dopamine and 10mM tris buffer solution, pH=8.5; Pretreatment of nano-aluminum powder can improve the dispersibility of nano-aluminum powder, reduce its agglomeration, make it more...

Embodiment 3

[0040] A preparation method of high-energy insensitivity aluminum-containing explosives, comprising the following steps:

[0041] Step 1. Dissolve 0.02g of nitrocellulose (NC), 1g of HMX and 0.458g of ammonium perchlorate (AP) in a mixed solvent (4mL) of acetone and dimethyl sulfoxide (volume ratio 1:1) to form a mixed solution;

[0042] Step 2: Take 0.35g of nano-Al powder and add it to the mixed solution, and disperse with magnetic stirring for 30 minutes to form a stable suspension;

[0043]Step 3. Inhale the suspension with a 5mL syringe with a needle, fix it on the electrostatic sprayer, receive it with an aluminum foil baffle, connect the positive pole to the needle of the syringe, and connect the negative pole to the aluminum foil baffle. 0.01ml / min, the negative pressure is controlled at -10kV, and the positive pressure is controlled at 10.95kV, so that the suspension forms a stable spray with a cone angle of 30° at the needle nozzle, and the HMX / AP / NC / Al aluminum-con...

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Abstract

The invention discloses a preparation method of a high-energy insensitive aluminum-containing explosive. The method comprises the following steps: dissolving nitrocotton, nitramine explosive and ammonium perchlorate in a mixed solvent to form a mixed solution; adding nano Al powder into the mixed solution, and dispersing to form a stable suspension; and sucking the suspension by using an injector with a needle head, fixing the suspension on an electrostatic sprayer, receiving the suspension by using an aluminum foil baffle, connecting a positive electrode to the needle head of the injector, connecting a negative electrode to the aluminum foil baffle, and adjusting process parameters to enable the suspension to form stable spray with a taper angle of 20-60 degrees at the nozzle of the needle head so as to obtain the high-energy insensitive aluminum-containing explosive. The high-energy insensitive aluminum-containing explosive prepared by the invention has the advantages of higher energy and density, favorable safety performance, less solvent used in the preparation process, low cost and safe production process.

Description

technical field [0001] The invention belongs to the design and control method of composite energetic materials, in particular to a preparation method of high-energy insensitive aluminum-containing explosives, and belongs to the technical field of explosives preparation. Background technique [0002] Ammonium nitrate explosives (HMX, CL-20 and RDX, etc.) are powdery explosive compounds with high detonation heat, detonation velocity and detonation pressure. They are one of the most widely used industrial explosives and are widely used in mixed explosives and solid propellants. However, HMX, CL-20 and RDX have high sensitivity to friction, impact and shock wave, and the disadvantages of low volume combustion enthalpy and energy density limit their application in the military field. Nanocomposite energetic materials have become a research hotspot of domestic and foreign scholars in recent years. Nanocomposite energetic materials can not only exert synergistic and reinforcing e...

Claims

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Application Information

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IPC IPC(8): C06B33/12C06B21/00
CPCC06B33/12C06B21/0008Y02P20/54
Inventor 冀威王韬王敦举郭长平
Owner SOUTHWEAT UNIV OF SCI & TECH
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