Preparation method of fluorine polymer/metal composite energy-containing material

A metal composite and fluoropolymer technology, which is applied in the direction of offensive equipment, explosives processing equipment, ammonium perchlorate composition, etc., can solve the problems of low pressure output, inability to react to release heat and pressure, and incomplete energy release, etc., to achieve The effect of simple operation process and easy batch preparation

Active Publication Date: 2019-07-02
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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AI Technical Summary

Problems solved by technology

Although these methods can improve the exothermic value of the reaction and the characteristics of the combustion reaction, they still cannot effectively solve the problems of low pressure output and incomplete energy release.
[0004] Pressure is an important factor affecting mass transfer during the material reaction process. However, the reaction product of fluoropolymer metal energetic materials is solid. For

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 5g of polytetrafluoroethylene (PTFE) powder into 50mL of AP aqueous solution with a mass fraction of 1%, stir and disperse, heat to 60-80°C to volatilize the water, AP crystallizes out in the water solution, and is doped on the surface of PTFE , After drying at 60°C to remove water, AP-doped PTFE particles were obtained. The AP-doped PTFE prepared above and 1.5g of aluminum powder were sequentially added to the F2311 binder solution, stirred and mixed, the solvent was evaporated, and dried at 60°C to obtain an AP-doped fluoropolymer metal energetic material.

Embodiment 2

[0026] Add 5g of polytetrafluoroethylene (PTFE) powder into 100mL of AP aqueous solution with a mass fraction of 5%, stir and disperse, and heat to 70°C to volatilize the water, and AP crystallizes out in the water solution, doped on the surface of PTFE, After drying at ℃ to remove water, AP-doped PTFE particles were obtained. The AP-doped PTFE prepared above and 3g of aluminum powder were sequentially added to the F2311 binder solution, stirred and mixed, the solvent evaporated, and dried at 60°C to obtain an AP-doped fluoropolymer metal energetic material.

Embodiment 3

[0028] Add 5g of polytetrafluoroethylene (PTFE) powder into 100mL of AP aqueous solution with a mass fraction of 5%, stir and disperse, and heat to 80°C to volatilize the water, and AP crystallizes out in the water solution, doped on the surface of PTFE, 60 After drying at ℃ to remove water, AP-doped PTFE particles were obtained. The AP-doped PTFE and 3g of boron powder prepared above were sequentially added to the F2311 binder solution, stirred and mixed, the solvent evaporated, and dried at 60°C to obtain an AP-doped fluoropolymer metal energetic material.

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PUM

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Abstract

The invention discloses a preparation method of a fluorine polymer/metal composite energy-containing material. According to the preparation method, ammonium perchlorate is doped in a fluorine polymermetal energy-containing system through solution crystallization method so as to obtain a novel composite energy-containing material. According to the preparation method, ammonium perchlorate decomposition is adopted to generated a gas product for enhancing the system pressure output and combustion reaction performance, at the same time, the gas obtained through ammonium perchlorate decomposition and reaction product carbon from a fluorine polymer metal system are subjected to oxidation reaction, energy and pressure release is accelerated, so that the fluorine polymer metal energy-containing system energy and combustion reaction characteristics are improved obviously. The preparation method is capable of improving the energy and pressure output of the fluorine polymer metal energy-containing system, and combustion reaction rate is converted from slow combustion to detonation and blast. Doping is adopted to form the novel energy-containing system, and it is possible for the novel energy-containing system to be used in fields such as solid propellant, metallized explosive, and gas generators.

Description

technical field [0001] The invention relates to the technical field of energetic materials, in particular to a preparation method of a fluoropolymer / metal composite energetic material. Background technique [0002] Energetic materials refer to compounds or mixtures that can independently undergo rapid chemical reactions and output energy, and are damage and power sources for weapon systems. Among them, the fluoropolymer / metal energetic system has been widely used in solid propellants, explosives and reactive fragments due to its ultra-high energy density and excellent reactivity. For example, the energy of polytetrafluoroethylene (PTFE) / A1 composite system is 21KJ / cm 3 , The energy density of polytetrafluoroethylene (PTFE) / Mg is 9.6KJ / g. [0003] Years of research and application have found that since the reaction of this type of material is an intermolecular reaction, the energy release rate is controlled by physical processes such as heat transfer and mass transfer. How...

Claims

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Application Information

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IPC IPC(8): C06B29/22C06B21/00
CPCC06B21/0016C06B29/22
Inventor 王军詹春红张龙
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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