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Host-guest explosive embedded with small molecule gas and preparation method thereof

A technology of host-guest and small molecules, which is applied in the field of CL-20 host-guest explosive and its preparation, can solve the problems of high explosive explosion risk and harsh experimental conditions, and achieve the effect of mild experimental conditions and simple preparation process

Active Publication Date: 2016-11-16
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

At present, through the high-pressure gas method at home and abroad, under the conditions of 15MPa and 80°C, CO 2 Press into the cavity of CL-20 unit cell to form CL-20.CO 2 Host-Guest Explosives (Martin S S, et al, Host–Guest Inclusion Compound from Nitramine Crystals Exposed to Condensed Carbon Dioxide Chemistry-A European Journal, 2010,16(45):13473-13478; Zhu Kang, et al, Supercritical CO 2 Anti-solvent method to prepare CL-20 ultrafine particle energetic material, 2012,20(4):445-449.), but this method is realized in a high-pressure closed chamber, the experimental conditions are harsh and the risk of explosive explosion is high, Need to explore a relatively mild preparation method of host-guest explosives embedded in small molecule gases

Method used

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  • Host-guest explosive embedded with small molecule gas and preparation method thereof
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  • Host-guest explosive embedded with small molecule gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Weigh 1g of CL-20 explosive powder, slowly pour it into a three-necked round-bottomed flask, then weigh 5ml of analytically pure ethyl acetate solution, add it, and stir at 50r / min magnetically at room temperature to fully dissolve the explosive;

[0041] (2) In the fume hood, will be filled with pure N 2 The 4L steel cylinder of O gas is introduced into the CL-20 solution through the polytetrafluoroethylene gas pipe through the pressure reducing valve, and continuously ventilated and bubbled for 1h to make the N 2 O gas is fully dissolved and saturated in the solution;

[0042] (3) Using the solvent-non-solvent method, quickly pour 20ml of petroleum ether into the CL-20 solution, while continuously feeding N 2 O gas bubbling, at room temperature, stirring crystallization for 1h, the precipitated solid was filtered, washed, and dried in an oven at 50°C for 1h to obtain CL-20.N 2 O host-guest explosive crystals.

Embodiment 2

[0044] (1) Weigh 1g of CL-20 explosive powder, slowly pour it into a three-necked round-bottomed flask, then weigh 3ml of analytically pure acetone solution and 12ml of ethanol solution, add it, and stir at 600r / min magnetic force at room temperature to fully dissolve the explosive;

[0045] (2) In the fume hood, will be filled with pure N 2 The 4L steel cylinder of O gas is introduced into the CL-20 solution through the polytetrafluoroethylene gas pipe through the pressure reducing valve, and continuously ventilated and bubbled for 5 minutes to make the N 2 O gas is fully dissolved and saturated in the solution;

[0046] (3) Using the solution evaporation method, continuously feed N 2 O gas bubbles, and the volatilized solvent vapor is continuously discharged along with the tail gas. The generated tail gas is discharged outside through the fume hood. Stir and crystallize at 10°C for 2h, filter and wash the precipitated solid, and dry it in an oven at 50°C for 1h. Get CL-20....

Embodiment 3

[0048] (1) Weigh 1g of CL-20 explosive powder, slowly pour it into a three-necked round-bottomed flask, then weigh 5ml of analytically pure amyl acetate solution and add it, at room temperature, mechanically stir at 400r / min to fully dissolve the explosive;

[0049] (2) In the fume hood, will be filled with pure N 2 The 4L steel cylinder of O gas is introduced into the CL-20 solution through the polytetrafluoroethylene gas pipe through the pressure reducing valve, and continuously ventilated and bubbled for 50 minutes to make the N 2 O gas is fully dissolved and saturated in the solution;

[0050] (3) Combining the solvent-non-solvent method with the cooling method, 20ml of CCl 4 Solution at 0.1ml.min -1 Slowly add dropwise to the CL-20 solution at a rate of , while continuously feeding N 2 O gas is bubbled, and the flask is placed in an ice-water bath, the temperature of the solution is lowered to 0°C, stirred and crystallized for 3.5 hours, the precipitated solid is filte...

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Abstract

The present invention discloses a host-guest explosive embedded with small molecule gas, and a preparation method thereof, wherein N2O gas is continuously introduced into a CL-20 solution, and the CL-20 and the N2O are subjected to co-crystallizing by using a solution re-crystallization method so as to obtain the CL-20 and N2O co-crystallized host-guest explosive crystal. According to the present invention, the method is based on the host-guest chemical thought, and the gas-liquid co-crystallization method is used to co-crystallize the small molecule gas and the explosive in the solution so as to obtain the CL-20 host-guest explosive crystal embedded with the N2O gas; the method has characteristics of simple preparation process and mild experiment condition, wherein the small molecule gas can be embedded into the explosive crystal without the high pressure gas; and the new idea can be provided for the structural optimization and the performance control of the high energy explosives, and the basic support can further be provided for the design and the manufacture of the advanced weapon.

Description

technical field [0001] The invention relates to a host-guest explosive crystal embedded in a small molecular gas and a preparation method thereof, in particular to an embedded N 2 O gas CL-20 host-guest explosive and its preparation method. Background technique [0002] Modern weapons put forward more and higher requirements for energetic materials such as "precision strike, high-efficiency damage, high survivability and environmental friendliness", which makes traditional energetic materials face severe challenges. And different use environments and purposes put forward special requirements for the performance of high explosives. For example, the main charge requires a sudden high energy to achieve safe, reliable and efficient damage, while the starting charge and booster charge require easy detonation and fast combustion to detonation to achieve reliable detonation. Therefore, it is very important to realize the functionalization of high-energy explosives and further imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/40
CPCC06B25/40
Inventor 徐金江孙杰郑申声刘渝张浩斌黄石亮刘晓峰
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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