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Preparation method of object and subject explosives with crystal cell embedded hydrogen peroxide molecules

A hydrogen peroxide, subject-guest technology, applied in the direction of explosives processing equipment, explosives, explosives composite components, etc., can solve the problems of hydrogen peroxide solution danger, unfavorable batch preparation, harsh experimental conditions, etc., and achieve convenient processing, molding and use , mild experimental conditions and high crystal purity

Active Publication Date: 2018-09-28
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

The experimental conditions of this method are harsh. First, dilute hydrogen peroxide aqueous solution needs to be concentrated under reduced pressure until the concentration reaches more than 98%. The hydrogen peroxide solution of this concentration is extremely dangerous, and it will explode if you are not careful. In this crystal system, two crystal forms of HNIW / H are obtained 2 o 2 Solvate crystals are likely to lead to the formation of mixed crystal forms, which is not conducive to the batch preparation of host-guest explosives embedded with hydrogen peroxide molecules in the unit cell. Therefore, it is necessary to explore a simple preparation process, mild experimental conditions, safe operation, and scalable preparation. technology

Method used

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  • Preparation method of object and subject explosives with crystal cell embedded hydrogen peroxide molecules
  • Preparation method of object and subject explosives with crystal cell embedded hydrogen peroxide molecules
  • Preparation method of object and subject explosives with crystal cell embedded hydrogen peroxide molecules

Examples

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Effect test

Embodiment 1

[0036] (1) Weigh 10g of carbamide peroxide raw material and place it in a 150ml Erlenmeyer flask, add 60ml of anhydrous methanol and stir it with a magnetic force at 500r / min until it is completely dissolved; plug the bottle mouth tightly with a glass stopper and place it in- After standing in a constant temperature box at 10°C for 4 hours, filter and remove the precipitated urea by-product to obtain anhydrous hydrogen peroxide-containing filtrate;

[0037] (2) Weigh 5g of the HNIW raw material and place it in a 50ml Erlenmeyer flask, add 10ml of methyl acetate, and stir magnetically at 500r / min until completely dissolved to obtain an anhydrous HNIW solution;

[0038] (3) Add the HNIW solution obtained in step (2) into the hydrogen peroxide filtrate of step (1), and after fully mixing with 500r / min magnetic stirring, adopt a low-temperature evaporation crystallization method, and decompress the solution in the conical flask by a vacuum pump Distillation, the vacuum degree is m...

Embodiment 2

[0041] (1) Weigh 10g of carbamide peroxide raw material and place it in a 250ml Erlenmeyer flask, add 100ml of absolute ethanol, stir magnetically at 150r / min until completely dissolved; plug the bottle mouth tightly with a glass stopper, and place it in- After standing in a constant temperature box at 25°C for 4 hours, filter and remove the precipitated urea by-product to obtain anhydrous hydrogen peroxide-containing filtrate;

[0042] (2) Weigh 5g of HNIW raw material and place it in a 50ml Erlenmeyer flask, add 15ml of ethyl acetate, and stir magnetically at 150r / min until completely dissolved to obtain anhydrous HNIW solution;

[0043] (3) Add the hydrogen peroxide filtrate obtained in step (1) into the HNIW solution of step (2), and after fully mixing with 150r / min magnetic stirring, adopt the low-temperature evaporation crystallization method, and place the Erlenmeyer flask in a sealed desiccator , and spread 60g of color-changing silica gel on the inner bottom of the de...

Embodiment 3

[0046] (1) Take by weighing 10g of carbamide peroxide raw material and place it in a 150ml Erlenmeyer flask, measure 100ml of anhydrous diethyl ether and add, and stir magnetically at 800r / min until completely dissolved; the bottle mouth is tightly plugged with a glass stopper, and placed in a 5 After standing in a constant temperature box at ℃ for 4 hours, filter and remove the precipitated urea by-product to obtain anhydrous filtrate containing hydrogen peroxide;

[0047] (2) Weigh 5g of HNIW raw material and place it in a 50ml Erlenmeyer flask, add 20ml of ethyl formate, and stir magnetically at 800r / min until completely dissolved to obtain anhydrous HNIW solution;

[0048] (3) Add the HNIW solution obtained in step (2) into the hydrogen peroxide filtrate of step (1), and after fully mixing with 800r / min magnetic stirring, adopt a low-temperature evaporation crystallization method, and decompress the solution in the conical flask by a vacuum pump Distillation, the vacuum de...

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Abstract

The invention discloses a preparation method of object and subject explosives with crystal cell embedded hydrogen peroxide molecules. The preparation method includes the steps: (1) dissolving urea peroxide raw materials in an organic solvent, closely placing mixture in a low-temperature environment after the materials are sufficiently stirred and dissolved, separating out a urea by-product, and performing filtering to obtain anhydrous hydrogen peroxide filtrate; (2) dissolving HNIW (hexanitrohexaazaisowurtzitane) in a liquid medium to obtain anhydrous HNIW solution after the HNIW are sufficiently stirred and dissolved; (3) mixing the anhydrous hydrogen peroxide filtrate and the anhydrous HNIW solution to obtain mixed solution, enabling the HNIW in the mixed solution to be supersaturated bythe aid of a low-temperature evaporative crystallization technique, and ensuring that water molecules cannot enter a crystallization system; (4) filtering, washing and drying mixed solution after crystals are not separated out to obtain the object and subject explosives with the crystal cells embedded hydrogen peroxide molecules. The method is simple in process, mild in experiment condition and safe to operate, mass preparation is easily implemented, and a new idea is provided for construction of HNIW-based object and subject explosives.

Description

technical field [0001] The invention relates to a method for regulating the microstructure of high-energy-density materials, in particular to a method for preparing a host-guest explosive in which hydrogen peroxide molecules are embedded in unit cells. Background technique [0002] Precise strike, high-efficiency damage, and high survivability are the goals pursued by current weapons. In order to make the weapon system have a higher damage effect, in addition to adopting advanced warhead design and special new materials, it is directly effective to load higher-energy explosives Therefore, the synthesis of high-energy-density materials with higher density and energy than the existing explosive Oktogen (HMX) has become the goal that researchers are striving for. It was not until the 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (CL-20 or HNIW) synthesized by AT Nielsen in the United States in 1987 that the long-cherished wish of surpassing HMX was realized. As a typical high en...

Claims

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Application Information

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IPC IPC(8): C06B25/40C06B21/00
CPCC06B21/0008C06B25/40
Inventor 徐金江余治慧孙杰田勇张浩斌朱春华
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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