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Preparation method of bicomponent energetic material core-shell structure

A core-shell structure, two-component technology, applied in the direction of nitrated acyclic/alicyclic/heterocyclic amine explosive composition, etc., can solve the problems of reduced sensitivity, weak adhesion energy and other long-range forces, and difficulty in achieving coating effects, etc. , to achieve the effect of maintaining energy level, reducing friction sensitivity and characteristic drop, and convenient operation

Active Publication Date: 2013-05-08
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 above technical means can effectively maintain the energy level of the system, but cannot greatly reduce the sensitivity
The reason is that the interface force between two energetic materials is dominated by long-range forces such as weak adhesion energy, and it is difficult to achieve a good coating effect (such as the formation of a core-shell structure) to reduce the sensitivity. Purpose

Method used

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  • Preparation method of bicomponent energetic material core-shell structure
  • Preparation method of bicomponent energetic material core-shell structure
  • Preparation method of bicomponent energetic material core-shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 Shown, the preparation process of HMXTATB comprises the following steps in turn:

[0029] (1) At room temperature, add 20 g of HMX with a particle size of about 150 μm into 20 g of Estane’s dichloroethane solution (2% mass fraction), stir at a low speed for 30 minutes, filter, and dry for later use;

[0030] (2) Weigh 1g of the HMX obtained in step (1), add it into 20mL ultrapure water, pretreat it with an ultrasonic wave with a power of 200W and a frequency of 100KHz for 30min, and set aside;

[0031] (3) Weigh 0.18g of nano-sized TATB powder, add it into 10mL of ultrapure water, and use ultrasonic treatment with a power of 240W and a frequency of 40KHz for 30min to make it evenly dispersed;

[0032] (4) Immediately add the TATB suspension obtained in step (3) to the HMX suspension in step (2), treat it with an ultrasonic wave with a power of 200W and a frequency of 100KHz for 15min, filter, and dry to obtain HMX with a core-shell structure and TATB ...

Embodiment 2

[0042] The preparation of the RDXLLM-105 core-shell structure comprises the following steps in turn:

[0043] (1) Add 20g RDX (particle size about 150μm) into 20g Estane dichloroethane solution (2% mass fraction) at room temperature, stir at low speed for 30min, filter with suction, and dry;

[0044] (2) Weigh 1g of RDX modified by Estane, add it to 20mL ultrapure water, and ultrasonicate for 30min at a power of 200W and a frequency of 100KHz;

[0045] (3) Weigh 0.18g of nanoscale LLM-105 powder, add it to 10mL of ultrapure water, and ultrasonicate for 30min at an ultrasonic power of 240W and a frequency of 40KHz to make it evenly dispersed;

[0046] (4) Add the ultrasonically dispersed LLM-105 suspension to the above-mentioned ultrasonically prepared RDX, continue ultrasonication for 15 minutes under the conditions of power of 200W and frequency of 100KHz, filter, and dry to obtain the core-shell structure of RDXLLM-105.

Embodiment 3

[0048] The preparation of the CL-20ANPZ core-shell structure comprises the following steps in turn:

[0049] (1) At room temperature, add 20g CL-20 (particle size about 150μm) into 20g Estane dichloroethane solution (mass fraction: 2%), stir at low speed for 30min, filter with suction, and dry;

[0050] (2) Weigh 1g of CL-20 modified by Estane, add it into 20mL ultrapure water, and ultrasonicate for 30min at a power of 200W and a frequency of 100KHz;

[0051] (3) Weigh 0.18g of nano-scale ANPZ powder, add it to 10mL of ultrapure water, and ultrasonicate for 30min at an ultrasonic power of 240W and a frequency of 40KHz to make it evenly dispersed;

[0052] (4) Add the ultrasonically dispersed ANPZ suspension to the above ultrasonically prepared CL-20, continue ultrasonication for 15 minutes under the conditions of 200W power and 100KHz frequency, filter, and dry to obtain the CL-20ANPZ core-shell structure.

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Abstract

The invention discloses a preparation method of a bicomponent energetic material core-shell structure. The method comprises the following steps: 1, adding a core layer energetic component to a core layer energetic component modifier solution, stirring at room temperature for 30min, filtering, and drying; 2, adding a core layer component obtained in step 1 into ultrapure water, and carrying out ultrasonic pretreatment for 30min; 3, adding shell layer energetic component powder to the ultrapure water, and carrying out ultrasonic treatment for 15-60min; and 4, adding a shell layer component suspension obtained in step 3 to a core layer component suspension obtained in step 2, continuously carrying out ultrasonic treatment for 5-360min, filtering, drying to obtain a bicomponent energetic material having a core-shell structure, and marking as the core layer energetic component @ the shell layer energetic component. The core-shell structure prepared in the invention can substantially reduce the friction sensitivity and the characteristic fall height of the core layer energetic component and maintain a high energy level, and the preparation method has the advantages of simple process, mild conditions and good safety.

Description

technical field [0001] The invention belongs to the field of energetic materials, in particular to a "core-shell" type two-component energetic material core-shell with high-energy and high-sensitivity single-mass energetic material as the core layer and high-energy and low-sensitivity single-mass energetic material as the shell layer The method of preparation of the structure. Background technique [0002] Energetic materials with high energy density can provide energy carriers for precise strikes and high-efficiency damage capabilities for modern weapons, but it is difficult to meet the requirements of high safety. Therefore, how to control the inherent contradiction between the energy and safety of energetic materials has become an urgent problem to be solved. a puzzle. [0003] Several desensitization technology approaches currently used, including the design and synthesis of new energetic materials, crystal quality improvement of existing energetic materials and nano / st...

Claims

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Application Information

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IPC IPC(8): C06B25/34
Inventor 黄兵谯志强张娟李洪珍聂福德黄辉
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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