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Refining method of hexanitrohexaaza-isowurtzitane based subject-object explosive crystal

A technology based on isowurtsyl and hexanitrohexanitrogen, which is applied in the refinement of CL-20-based host-guest explosive crystals and the preparation of host-guest explosive crystals, and can solve problems such as multiple cracks, holes, and crystal safety effects , to achieve the effects of increasing the amount of outgassing, improving combustion and detonation performance, and facilitating particle grading and processing.

Active Publication Date: 2018-03-20
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

In this method, the size of the initial template will directly determine the particle size of the host-guest explosive crystal, and the prepared host-guest explosive crystal has a crystal cluster structure, and there are many defects such as cracks and holes in the crystal, which will affect the safety of the crystal. make an impact

Method used

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  • Refining method of hexanitrohexaaza-isowurtzitane based subject-object explosive crystal
  • Refining method of hexanitrohexaaza-isowurtzitane based subject-object explosive crystal
  • Refining method of hexanitrohexaaza-isowurtzitane based subject-object explosive crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Measure 50ml of methyl acetate and place it in a 150ml Erlenmeyer flask, weigh 5g of CL-20 raw material, add 0.25g of sodium dodecylbenzene sulfonate to the solution, and magnetically stir until completely dissolved to obtain a CL-20 solution with a concentration of 10%wt.

[0040] (2) Continuously inject CO into a 1000ml cavity made of pressure-resistant glass 2 The gas forms a stable air flow, and the flow rate of the gas is controlled at 1000ml / min through the flow regulating valve, and the temperature of the cavity is kept constant at 40°C by using the insulation jacket.

[0041] (3) Draw 50ml of CL-20 solution with a flat-end needle syringe with a diameter of 0.1mm, and spray the solution into the cavity with small molecule airflow through the syringe needle at a rate of 10ml / min, and at the same time assist the ultrasonic effect outside the cavity , Ultrasonic power is 500W.

[0042] (4) The solvent in the fine liquid droplets is continuously volatilized by ...

Embodiment 2

[0044] (1) Measure 50ml of ethyl acetate and place it in a 150ml Erlenmeyer flask, weigh 22.5g of CL-20 raw material and add it, and add 0.1g of polyvinylpyrrolidone to the solution, magnetically stir until completely dissolved, and obtain CL-20 solution with a concentration of 45%wt.

[0045] (2) Continuously feed N into a 2000ml chamber made of stainless steel 2 O gas forms a stable air flow, and the flow rate of the gas is controlled at 800ml / min through the flow regulating valve, and the temperature of the cavity is kept constant at 80°C by using the insulation jacket.

[0046] (3) Draw 10ml of CL-20 solution with a flat-end needle syringe with a diameter of 0.06mm, and spray the solution into the cavity with small molecule airflow through the syringe needle at a rate of 1ml / min, and at the same time assist the ultrasonic effect outside the cavity , Ultrasonic power is 900W.

[0047] (4) The solvent in the fine liquid droplets is continuously volatilized by continuously ...

Embodiment 3

[0049] (1) Measure 25ml of acetone and 25ml of methanol into a 150ml Erlenmeyer flask, weigh 2.5g of CL-20 raw material, add 0.25g of polyethylene glycol into the solution, and magnetically stir until completely dissolved , to obtain a CL-20 solution with a concentration of 5% wt.

[0050] (2) Continuously inject NO into a 100ml cavity made of Hastelloy 2 The gas forms a stable air flow, and the flow rate of the gas is controlled at 200ml / min through the flow regulating valve, and the temperature of the cavity is kept constant at 20°C by using the insulation jacket.

[0051] (3) Draw 50ml of CL-20 solution with a flat-end needle syringe with a diameter of 0.5mm, and spray the solution into the cavity with small molecule airflow through the syringe needle at a rate of 100ml / min, and at the same time assist the ultrasonic effect outside the cavity , Ultrasonic power is 100W.

[0052] (4) The solvent in the fine liquid droplets is continuously volatilized by continuously feedin...

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Abstract

The invention discloses a refining method of a hexanitrohexaaza-isowurtzitane based subject-object explosive crystal. The refining method comprises the following steps: A, dissolving a raw material CL-20 into a liquid medium to obtain a CL-20 solution with the concentration of 5 weight percent to 45 weight percent; B, sucking no less than 10ml of the CL-20 solution by utilizing an injector with aflat-end needle head; C, continuously introducing small-molecule gas into a cavity with an inlet and an outlet to form stable flowing airflow; controlling the temperature of the cavity to 20 DEG C to80 DEG C; D, injecting the sucked CL-20 solution in step B into the cavity with the flowing airflow in step C through the needle head of the injector to rapidly co-crystallize the CL-20 and a gas small molecule, so as to form the subject-object explosive crystal which has an ultrafine grain size and a unit cell internally embedded with the gas small molecule. The superfine subject-object explosivecrystal prepared by the refining method has relatively good particle morphology, the average grain diameter is about 2mu m and the thermal stability is good.

Description

technical field [0001] The invention relates to a method for preparing a host-guest explosive crystal, in particular to a method for refining a CL-20-based host-guest explosive crystal with small gas molecules embedded in a unit cell, and belongs to the technical field of explosive preparation. Background technique [0002] The current world situation is complex, and strict requirements are put forward for the precision strike, high-efficiency damage and high survivability of advanced weapons. As the carrier of the core energy of the weapon warhead, energetic materials are facing severe challenges at this stage. In order to break through the limitations of traditional energetic materials, the construction of micro-nano energetic materials has become one of the current research hotspots. The properties of energetic materials are not only related to molecular structure, but also closely related to material microstructure, especially parameters such as particle size and defects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00C06B49/00
CPCC06B21/0066C06B49/00
Inventor 徐金江孙杰田勇刘渝张浩斌
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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