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A preparation method of a high-energy explosive filled three-dimensional graphene frame composite structure

A frame structure, high-energy explosive technology, applied in graphene, explosives processing equipment, explosives, etc., can solve the problems of poor safety, less application of high-energy explosives, controlled safety, etc., to improve safety performance, achieve explosive performance, and reduce explosives. Sensitivity effect

Active Publication Date: 2021-07-30
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inherent contradiction between energy and safety of energetic materials, the higher the energy of explosives, the worse their safety
Although researchers have great expectations for high-energy explosives (Octokin HMX, hexanitrohexaazpentazane CL-20), due to safety, the current application of high-energy explosives is relatively small, and has not yet been developed. Large-scale equipment application

Method used

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  • A preparation method of a high-energy explosive filled three-dimensional graphene frame composite structure
  • A preparation method of a high-energy explosive filled three-dimensional graphene frame composite structure
  • A preparation method of a high-energy explosive filled three-dimensional graphene frame composite structure

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Experimental program
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Effect test

Embodiment 1

[0029] Measure 15ml of a graphene oxide aqueous solution with a concentration of 2mg / ml, place it in a stainless steel reaction kettle lined with polytetrafluoroethylene, seal it, and heat it in an oven to 180°C for hydrothermal reaction for 24h. The product was taken out to obtain a graphene gel, which was rinsed several times and freeze-dried to obtain a three-dimensional graphene framework structure.

[0030] figure 1 (a) is the SEM morphology of the three-dimensional graphene framework structure, and an obvious network structure can be seen, indicating that the three-dimensional graphene framework structure has been successfully prepared.

[0031] The obtained three-dimensional graphene frame structure is used as a template, and the CL-20 acetone saturated solution is added to the three-dimensional graphene frame structure by using the template adsorption explosive solution import method, and heated at a constant temperature of 60°C in a vacuum drying oven for 20 to 25 min...

Embodiment 2

[0041] Measure 20ml of graphene oxide aqueous solution with a concentration of 1mg / ml, place it in a sample bottle with a sealed cap, and add 0.12g of reducing agent ethylenediamine. Cover with a sealed lid, shake evenly, and place in an oven at 85°C to react for 24 hours. The product was taken out, slowly transferred to deionized water for immersion, and washed several times to remove unreacted reducing agent and impurities, and freeze-dried to obtain a three-dimensional graphene framework structure.

[0042] The obtained three-dimensional graphene framework structure was used as a template, and the HMX acetone saturated solution was added to the three-dimensional graphene framework structure by adopting the import method of template adsorption explosive solution, and evaporated in a vacuum drying oven at a constant temperature of 60°C for 20 minutes, and the solvent acetone was evaporated to obtain HMX explosives filled frame composite structure.

[0043] Using the introduc...

Embodiment 3

[0049] Measure 200ml of graphene oxide aqueous solution with a concentration of 20mg / ml, put it in a 250ml beaker, add 2g of resorcinol, 1g of formaldehyde and 10mg of catalyst sodium carbonate. The mixture was transferred to a glass mold, sealed, and heated in an oven at 80°C for 96h. The graphene gel product was taken out from the mold, soaked and cleaned with acetone, supercritical CO 2 dry wet gel, in N 2 Heating at 1050°C for 3 hours under atmosphere to obtain a three-dimensional graphene framework structure.

[0050] The obtained three-dimensional graphene framework structure was used as a template, and the saturated solution of DAAF acetone was added to the three-dimensional graphene framework structure by adopting the import method of template adsorption explosive solution, and evaporated in a vacuum drying oven at a constant temperature of 60°C for 20 minutes, and the solvent acetone was evaporated to obtain DAAF explosives filled frame composite structure.

[0051...

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Abstract

The invention discloses a method for preparing a three-dimensional graphene frame composite structure filled with high-energy explosives. The three-dimensional graphene frame structure is prepared by reducing self-assembly of two-dimensional graphene oxide nanomaterials as a template, and the high-energy explosive solution is introduced into the three-dimensional graphene frame structure. In this process, the explosive solution is recrystallized in the frame structure of the template by using external forces, forming explosive crystals to grow oriented in the confined space of the frame structure, constructing a composite structure filled with explosives, and crystallizing the explosive solution several times to obtain high-energy explosive Filled 3D graphene frame composite structures. The method of the invention can improve the dispersibility of graphene in the composite explosive system and enhance the mass and heat transfer characteristics of the composite system, effectively reduce the impact sensitivity, friction sensitivity and electrostatic spark sensitivity of the explosive, and improve safety performance.

Description

technical field [0001] The invention belongs to the design and regulation method of composite structures of energetic materials, in particular to a preparation method of explosive-filled three-dimensional graphene frame composite structure, which is obtained by combining three-dimensional graphene frame template preparation and explosive solution recrystallization to obtain a filled three-dimensional graphene frame explosive composite structure. Background technique [0002] One generation of materials, one generation of equipment. The speed of updating energetic materials is directly related to the development process of weapon equipment modernization. The weapon development goal of "precise strike, high-efficiency damage, high survivability, and environmental friendliness" puts forward more and higher requirements for energetic materials, such as higher energy density, better safety performance, and better energy release efficiency. and better environmental stability. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B45/04C01B32/19C06B21/00
CPCC06B21/0083C06B45/04C01B32/19
Inventor 邓鹏曹雄朱帅达胡双启李晓霞胡立双
Owner ZHONGBEI UNIV
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