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Energetic microsphere formed by compounding polymer, nano-aluminum powder and energetic medicament

A nano-aluminum powder and polymer technology, which is used in explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of uneven mixing, agglomeration of components of nano-aluminum composite energetic materials, increase the mechanical strength of microspheres, etc. The appearance is regular, the distribution is uniform, and the effect of increasing the contact area

Inactive Publication Date: 2020-02-04
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects existing in the prior art, the object of the present invention is to provide an energetic microsphere composed of a polymer, nano-aluminum powder and an energetic agent, and the nano-aluminum powder and the energetic agent are made into a composite Microspheres; the polymer not only increases the mechanical strength of the microspheres, but also promotes the energy release of the microsphere system due to the energy characteristics of the polymer itself; Level compounding, which solves the problem of uneven mixing of nano-aluminum composite energetic material components and serious agglomeration during use

Method used

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  • Energetic microsphere formed by compounding polymer, nano-aluminum powder and energetic medicament
  • Energetic microsphere formed by compounding polymer, nano-aluminum powder and energetic medicament
  • Energetic microsphere formed by compounding polymer, nano-aluminum powder and energetic medicament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1. Add 0.03g of fluororubber F2602 and 0.16g of nano-aluminum powder with a median particle size of 10nm into 10mL of a mixed solvent I of ethyl acetate and acetone with a volume ratio of 4:1, and stir vigorously at 25°C for 5 minutes Ultrasound for 1h, followed by stirring for 24h to obtain a stable precursor solution;

[0034] Step 2. Add 1 g of RDX to 12.5 mL of a mixed solution of ethyl acetate and N,N-dimethylformamide with a volume ratio of 10:3, and stir at 25°C for 5 hours to obtain a clear energetic agent solution;

[0035] Step 3. The input end of the inner shaft of the coaxial electrospinning needle is connected to a syringe through a Teflon plastic tube, and the input end of the outer shaft of the coaxial electrospinning needle is connected to another syringe through a Teflon plastic tube. 2. Add the prepared energetic agent solution into the syringe connected to the inner shaft of the coaxial electrospinning needle, and then add the precursor solution ...

Embodiment 2

[0040] Step 1. Add 0.04g of polyvinylidene fluoride and 0.27g of nano-aluminum powder with a median particle size of 10nm to 20.77mL of a mixed solution of ethyl acetate and acetone with a volume ratio of 4:1, and vigorously stir at 25°C for 30min After ultrasonication for 0.5h, followed by stirring for 24h, a stable precursor solution was obtained;

[0041]Step 2. Add 1 g of RDX to 20 mL of a mixed solution of ethyl acetate and N,N-dimethylformamide with a volume ratio of 4:1, and stir at 25°C for 3 hours to obtain a clear energetic agent solution;

[0042] Step 3. The input end of the inner shaft of the coaxial electrospinning needle is connected to a syringe through a Teflon plastic tube, and the input end of the outer shaft of the coaxial electrospinning needle is connected to another syringe through a Teflon plastic tube. 2. Add the prepared energetic agent solution into the syringe connected to the inner shaft of the coaxial electrospinning needle, and then add the precu...

Embodiment 3

[0047] Step 1. Add 0.03g of fluororubber F2602 and 0.16g of nano-aluminum powder with a median particle size of 10nm to 9.4mL of a mixed solution of ethyl acetate and acetone with a volume ratio of 4:1, and stir vigorously at 60°C for 5 minutes Ultrasound for 2h, followed by stirring for 48h to obtain a stable precursor solution;

[0048] Step 2. Add 1 g of hexanitrohexaazaisowurtzitane into 10 mL of a mixed solution of ethyl acetate and N,N-dimethylformamide with a volume ratio of 4:1, and stir at 25°C for 3 hours to obtain a clear Energetic agent solutions;

[0049] Step 3. The input end of the inner shaft of the coaxial electrospinning needle is connected to a syringe through a Teflon plastic tube, and the input end of the outer shaft of the coaxial electrospinning needle is connected to another syringe through a Teflon plastic tube. 2. Add the prepared energetic agent solution into the syringe connected to the inner shaft of the coaxial electrospinning needle, and then ad...

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Abstract

The invention relates to an energetic microsphere formed by compounding a polymer, nano-aluminum powder and an energetic medicament, and belongs to the technical field of explosives and powders. The polymer and the nano-aluminum powder are added into a first mixed organic solvent, and mixing is performed until uniformity in order to obtain a precursor solution serving as a coaxial electrostatic spinning outer-axis solution; the energetic medicament is added into a second mixed organic solvent, and mixing is performed until uniformity in order to obtain an energetic medicament solution servingas a coaxial electrostatic spinning inner-axis solution; and the flow rate of the outer-axis solution is controlled to be 0.2-3 mL / h, the flow rate of the inner-axis solution is controlled to be 0.1-1mL / h, the voltage is 10-20 kV, the receiving distance is 5-20 cm, and the energetic microsphere is obtained after the obtained product is dried. The composite microsphere is prepared by an electrostatic spinning technology, so that the problems of uneven component mixing and serious agglomeration during use of the nano-aluminum composite energetic material are solved.

Description

technical field [0001] The invention relates to an energetic microsphere composed of a polymer, nano-aluminum powder and an energetic agent, and belongs to the technical field of explosives. Background technique [0002] Energetic materials are a class of materials that can independently undergo chemical reactions and release energy, including compounds containing explosive groups and mixtures containing oxidants and combustible agents, and are usually divided into single-substance energetic materials according to the combination of oxidizers and combustible agents and composite energetic materials. Compared with composite energetic materials, the dispersion of oxidizing and reducing groups in single energetic materials is higher, reaching the atomic / molecular level. The energy release process and release rate are controlled by chemical reaction kinetics, and the energy can be maximized. exert its inherent power. However, limited by the chemical stability of the substance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/08C06B33/12C06B33/06C06B21/00
CPCC06B21/0066C06B33/06C06B33/08C06B33/12
Inventor 任慧闫涛焦清介
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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