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Subjective-objective explosive with high crystal density and preparation method of subjective-objective explosive

A crystal density, host-guest technology, applied in the direction of explosives processing equipment, explosives, explosives composite components, etc., can solve the problems of hydroxylamine application and storage difficulties, hydroxylamine solution explosion, instability, etc., to achieve good thermal stability, mild experimentation, increase The effect of outgassing

Active Publication Date: 2017-06-13
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the instability of hydroxylamine brings great difficulties to the application and storage of such compounds. Hydroxylamine is solid and extremely unstable at room temperature, and easily absorbs water vapor and CO 2 And decompose rapidly, thermal decomposition can occur at about 15°C and violent explosion occurs at higher temperatures
According to reports, the instability of hydroxylamine solution has caused many explosion accidents

Method used

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  • Subjective-objective explosive with high crystal density and preparation method of subjective-objective explosive
  • Subjective-objective explosive with high crystal density and preparation method of subjective-objective explosive
  • Subjective-objective explosive with high crystal density and preparation method of subjective-objective explosive

Examples

Experimental program
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Effect test

Embodiment 1

[0049] (1) Weigh 7g of dried hydroxylamine hydrochloride, slowly pour it into a 250ml conical flask, add 100ml of butanol solution at the same time, stir magnetically for 10min, and dissolve all the solids;

[0050] (2) Slowly add 9.6 g of sodium butoxide into the hydroxylamine hydrochloride solution, and simultaneously stir rapidly with a magnetic force at a rate of 500 ml / min. After reacting for 60 minutes, remove the solid residue by filtration to obtain a hydroxylamine solution with a concentration of about 1 mol / L;

[0051] (3) Dissolve 10 g of CL-20 in 25 ml of ethyl acetate to obtain a CL-20 solution with a concentration of about 0.91 mol / L;

[0052] (4) Using the solvent-anti-solvent method, slowly add the hydroxylamine solution to the CL-20 solution at a rate of 1ml / min, and stir for crystallization for 1h;

[0053] (5) Filter and wash the precipitated solid, and dry it in an oven at 60°C for 1 hour to obtain CL-20 / NH 2 OH host-guest explosive crystal.

Embodiment 2

[0055] (1) Weigh 3.28g of dried hydroxylamine sulfate, slowly pour it into a 250ml Erlenmeyer flask, add 100ml of propanol solution at the same time, stir magnetically for 10min, and dissolve all the solids;

[0056] (2) Slowly add 1.64 g of sodium propoxide into the hydroxylamine sulfate solution, and simultaneously stir rapidly with a magnetic force at a rate of 500 ml / min. After reacting for 60 minutes, remove the solid residue by filtration to obtain a hydroxylamine solution with a concentration of about 0.2 mol / L;

[0057] (3) Dissolve 0.438g of CL-20 in 10ml of methyl acetate to obtain a CL-20 solution with a concentration of about 0.1mol / L;

[0058] (4) Using the solvent-anti-solvent method, slowly add the hydroxylamine solution to the CL-20 solution at a rate of 5ml / min, and stir for crystallization for 10min;

[0059] (5) Then measure 50ml of diethyl ether, drop it into the solution at a rate of 5ml / min, stir and crystallize for 1h;

[0060] (6) Filter and wash the p...

Embodiment 3

[0062] (1) Weigh 19.7g of dried hydroxylamine phosphate, slowly pour it into a 250ml Erlenmeyer flask, add 80ml of ethanol solution at the same time, stir magnetically for 10min, and dissolve all the solids;

[0063] (2) Slowly add 5.4 g of sodium ethylate into the hydroxylamine phosphate solution, and simultaneously stir rapidly with a magnetic force at a rate of 500 ml / min. After reacting for 60 minutes, remove the solid residue by filtration to obtain a hydroxylamine solution with a concentration of about 0.125 mol / L;

[0064] (3) Dissolve 10 g of CL-20 in 80 ml of tetrahydrofuran to obtain a CL-20 solution with a concentration of about 0.285 mol / L;

[0065] (4) Add the hydroxylamine solution to the CL-20 solution, and the solution remains clear at this moment;

[0066] (5) Adopt solvent evaporation method, feed nitrogen into the solution surface, continue purging for 5 hours, and exhaust the tail gas, and assist magnetic stirring crystallization at the same time;

[0067]...

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Abstract

The invention discloses a preparation method of a subjective-objective explosive with high crystal density. The preparation method comprises the following steps: respectively preparing a fresh hydroxylamine solution and a CL-20 explosive solution, mixing the two solutions, oversaturating the solutions by using a recrystallization technique, driving cocrystallization of CL-20 with hydroxylamine, thereby obtaining the subjective-objective explosive crystal which is highly ordered in molecular accumulation, is periodically arranged and prepared through cocrystallization of CL-20 with hydroxylamine. The invention further discloses the subjective-objective explosive with high crystal density. The molecular ratio of the subjective-objective explosive with high crystal density is 2:1, the hydroxylamine is embedded into unit cell cavities of CL-20, then the crystal density of the explosive can be up to 2.0g.cm<-1> or greater, relatively good thermal stability can be achieved, and meanwhile stable preparation of the hydroxylamine is achieved. The subjective-objective explosive prepared by using the preparation method has the potential of increasing air release quantity, increasing the detonation velocity and the detonation pressure and improving comprehensive properties of explosives, and has wide application prospects in advanced weapon payloads and rocket propellants.

Description

[0001] This application is supported by the National Natural Science Foundation of China (Project No. 11472252). technical field [0002] The invention relates to a method for preparing high-energy explosive crystals, in particular to a host-guest explosive with high crystal density and a preparation method thereof. Background technique [0003] Precise strike, efficient damage and high survivability are the goals pursued by modern weapons. To achieve these goals, energetic materials as weapon energy carriers must meet the requirements of high energy density, low vulnerability and environmental adaptability, which makes traditional energetic materials face severe challenges. Since the design and synthesis of new energetic materials requires a long research period, and the replacement of traditional energetic materials is also extremely challenging, therefore, improving the performance of explosives by improving existing energetic materials is one of the current research hots...

Claims

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Application Information

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IPC IPC(8): C06B45/00C06B25/34C06B21/00
CPCC06B21/0008C06B25/34C06B45/00
Inventor 徐金江孙杰张浩斌刘渝郑申声黄石亮刘晓峰
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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