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Preparation method of energetic film composite type gunpowder

A compound and explosive technology, applied in explosives, explosive charges, explosives processing equipment, etc., to achieve the effects of small specific surface area, increased energy output, and improved safety

Inactive Publication Date: 2012-04-04
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that even in a closed storage container, the oxidation of aluminum powder is quite serious.

Method used

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  • Preparation method of energetic film composite type gunpowder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. The raw materials are TNT and aluminum film strips with a width of 30cm, a length of 5m and a thickness of 0.02mm.

[0022] 2. Put TNT into a water bath and heat it to 80°C to 90°C to melt it into a molten state.

[0023] 3. Evenly coat molten TNT on one side of the aluminum film surface, then directly roll the TNT-coated aluminum film explosive into a cylindrical structure roll, and obtain a cylindrical high-energy film composite explosive (TNT / Al) after solidification .

[0024] In this embodiment, no additives are used, that is, the high-energy thin-film composite propellant and explosive consists only of aluminum thin film and TNT charge. For the needs of the test, in the prepared high-energy film composite propellant, the mass content of the aluminum film is 4%, 10%, 20%, 30%, 40% respectively.

[0025]4. Use the steel plate indentation test method to verify the detonation, detonation transmission and violence of the high-energy film composite propellant prepa...

Embodiment 2

[0034] 1. Mix RDX, paraffin, and graphite in a mass ratio of 95:4:1, and heat to 80°C.

[0035] 2. Apply the heated explosive coating evenly on one side of the aluminum film strip (thickness 0.02mm, width 300mm) to make a sheet-like high-energy thin film composite (RDX / Al) propellant blank.

[0036] 3. Process the sheet-like high-energy film composite propellant and explosive blank into a circular explosive film with a diameter of 25mm, then stack the explosive film layer by layer and put it into a cylindrical mold with a diameter of 25.2mm and pressurize it to 70MPa. After demolding, the stacked Type structured high energy thin film composite explosives

[0037] For the needs of the experiment, in the prepared high-energy thin film composite (TNT / Al) propellant aluminum thin film, the mass content of the aluminum thin film is respectively 10%, 20%, 30%, 40%, 50%, 60%.

[0038] 4. Use the steel plate indentation test to verify the initiation, transmission and severity of the ...

Embodiment 3

[0045] 1. Raw materials: RDX particles, epoxy resin, aluminum film thickness 0.7mm, width 300mm.

[0046] 2. Mix RDX and epoxy resin evenly at a mass ratio of 98:2, put them into a water bath for heating, and mix epoxy resin and RDX evenly to obtain the explosive coating.

[0047] 3. The prepared explosive coating is evenly coated on one side of the surface of the aluminum film (30 cm wide and 40 cm long) to form a sheet-like high-energy film composite (RDX / Al) propellant blank.

[0048] 4. Process the flaky high-energy thin film composite propellant and explosive billet into a circular explosive film with a diameter of 25mm, then stack the explosive film layer by layer into a cylindrical mold with a diameter of 25.2mm and pressurize to 70MPa. After demoulding, the obtained High energy thin film sandwich structure composite explosive grain. The mass content of the high-energy film composite (RDX / Al) explosive aluminum film prepared in the laboratory is 20% and 30% respectivel...

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Abstract

The present invention relates to energetic composite gunpowder / explosive and preparation technology thereof. the preparation method includes a step of processing energetic material into film with a thickness from 1 [Mu]m to 1mm; a step of preparing the gunpowder and explosive into limy explosive coating after a eliguation and emulsion process to coat on the surface of the film, so as to obtain energetic film composite gunpowder / explosive blank; a step of coiling the blank into helical structure charge column, or overlapping multilayer blank and pressing into a laminated structure, or glueing the multilayer blank into a laminated structure by binder to obtain the energetic film composite gunpowder / explosive; wherein the quality of the energetic film material is from 4% to 60%, that of the gunpowder / explosive material is from 40% to 96%, that of the binder is from 0% to 15%. The invention replaces the traditional powder material by film shape energetic material, the preparation process is simple, the housework circumstance and the safety are all improved; the energy output of the mixed gunpowder / explosive is improved, at the same time the performance of safety, mechanics and long storage of the gunpowder / explosive is improved, and the energetic composite gunpowder / explosive is capable of meeting the requirement of the modern blasting equipment.

Description

Technical field: [0001] The invention belongs to the field of energetic materials, and in particular relates to high-energy composite gunpowder, explosives and preparation technology thereof. Background technique: [0002] Energetic materials such as gunpowder and explosives have been widely used in military, high-tech and civilian fields. Gunpowder and explosives are usually granular organic matter, and binders can be added to the gunpowder in order to improve the molding effect of the gunpowder. In order to improve the detonation heat, shock wave effect and water bubble energy of gunpowder and explosives, high-energy metal powders such as aluminum, magnesium, boron, and nickel are usually added to the explosives. The most widely used is the addition of aluminum powder containing aluminum ( powder) explosives. Under normal circumstances, the fineness and particle size of such powdered agents are required to be on the order of microns or nanometers. Therefore, the process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B45/00C06B21/00F42B1/00
Inventor 沈兆武廖学燕樊自建
Owner UNIV OF SCI & TECH OF CHINA
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