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Core-shell structure carbon-based copper azide composite energetic material and preparation method thereof

A core-shell structure, copper nitride technology, applied in metal azide composition, carbon preparation/purification, azide acid/azide/halide azide, etc., can solve the problem of low content, composite energy The problem of low energy density of materials, etc., achieves the effect of reducing sensitivity, high energy insensitivity, and simple preparation method.

Active Publication Date: 2022-03-01
NANJING UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The second type of work is less reported at home and abroad, mainly using non-energetic copper-based MOF (such as HKUST-1) as a precursor to prepare copper azide composite energetic materials, 2016, literature (Wang Q, Feng X, Wang S, et al. Metal-organic framework templated synthesis of copper azide as the primary explosive with low electrostatic sensitivity and excellent initiation ability[J]. Advanced Materials, 2016, 28(28): 5766-5766.) reported that MOF was carbonized at high temperature Then react with hydrogen azide gas to prepare copper azide in situ, and obtain an electrostatically insensitive porous carbon composite energetic material with a carbon skeleton uniformly coated with copper azide
However, since the composite energetic material prepared by this method uses copper-containing MOF material as a precursor, the content of copper azide depends on the content of copper ions in MOF, and the content of copper ions in MOF is fixed and less , so the energy density of the composite energetic material is low

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  • Core-shell structure carbon-based copper azide composite energetic material and preparation method thereof
  • Core-shell structure carbon-based copper azide composite energetic material and preparation method thereof
  • Core-shell structure carbon-based copper azide composite energetic material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Preparation of core-shell carbon-based copper azide composite energetic materials:

[0030] In step 1, copper acetate (15 mmol), glucose (100 mmol) and polyvinylpyrrolidone (22.5 mmol) were respectively dissolved in 50 mL of diethylene glycol. After mixing the three solutions, the oil bath was heated to 100° C., magnetically stirred for 2 h, and the obtained product was washed and centrifuged to obtain cuprous oxide nanoparticles. Dissolve cuprous oxide nanoparticles (2.5 mmol) in 200 mL of benzyl alcohol to obtain a benzyl alcohol solution of cuprous oxide nanoparticles; 3 BTC (3.35 mmol) was dissolved in ethanol to give H 3 Ethanol solution of BTC. The benzyl alcohol solution of cuprous oxide nanoparticles was heated to 80 °C in a water bath, and the H 3 The ethanol solution of BTC was poured into the benzyl alcohol solution of cuprous oxide nanoparticles, and the solution was magnetically stirred for 2.5 h. The resulting Cu 2 The O@MOF hybrids were centrifuged a...

Embodiment 2

[0040] Preparation of core-shell carbon-based copper azide composite energetic materials:

[0041] In step 1, copper acetate (15 mmol), glucose (100 mmol) and polyvinylpyrrolidone (22.5 mmol) were respectively dissolved in 50 mL of diethylene glycol. The three solutions were mixed in an oil bath and heated to 100 °C, and magnetically stirred for 2 h. The resulting product was washed and centrifuged. The cuprous oxide nanoparticles were obtained; cuprous oxide (3 mmol) was dissolved in 200 mL of benzyl alcohol; the H 3 BTC (4 mmol) was dissolved in ethanol. The benzyl alcohol solution of cuprous oxide was heated to 80°C in a water bath, and the H 3 The ethanol solution of BTC was poured into the benzyl alcohol solution of cuprous oxide, and the solution was magnetically stirred for 2.5 h. The product is centrifuged and dried;

[0042] Step 2, put the sample into the middle of the corundum tube of the vacuum tube furnace, while heating, pass argon gas and turn on the vacuum...

Embodiment 3

[0045] Preparation of core-shell carbon-based copper azide composite energetic materials:

[0046] In step 1, copper acetate (15 mmol), glucose (100 mmol) and polyvinylpyrrolidone (22.5 mmol) were respectively dissolved in 50 mL of diethylene glycol. The three solutions were mixed in an oil bath and heated to 100 °C, and magnetically stirred for 2 h. The resulting product was washed and centrifuged. Cuprous oxide nanoparticles were obtained; cuprous oxide (2.8 mmol) was dissolved in 200 mL of benzyl alcohol; H 3 BTC (3.75 mmol) was dissolved in ethanol. The benzyl alcohol solution of cuprous oxide was heated to 80°C in a water bath, and the H 3 The ethanol solution of BTC was poured into the benzyl alcohol solution of cuprous oxide, and the solution was magnetically stirred for 2.5 h. The product is centrifuged and dried;

[0047] Step 2, put the sample into the middle of the corundum tube of the vacuum tube furnace, while heating, pass argon gas and turn on the vacuum pu...

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Abstract

The invention discloses a core-shell structure carbon-based copper azide composite energetic material and a preparation method thereof. The composite energetic material takes large-particle copper azide as a core and amorphous carbon uniformly distributed with copper azide as a shell, a Cu-coated MOF hybrid with a core-shell structure is constructed by accurately controlling the dissolution rate of cuprous oxide and the MOF crystallization rate, and an amorphous carbon composite material embedded with cuprous oxide nanoparticles is obtained through calcination on the basis. And then through a gas-solid phase azidation reaction, the core-shell structure carbon-based copper azide composite energetic material is constructed. According to the composite energetic material, the topological structure of the three-dimensional metal organic framework material is used for uniformly isolating a copper azide component in an energetic system, on one hand, the advantage of high energy density of copper azide is played, on the other hand, the sensitivity of the composite energetic material is greatly reduced by using the carbon material, and the prepared composite energetic material has excellent performance of high energy insensitivity.

Description

technical field [0001] The invention belongs to the technical field of energetic materials, and relates to a core-shell structure carbon-based copper azide composite energetic material and a preparation method thereof. Background technique [0002] The research on copper azide is increasing day by day, and how to reduce the electrostatic sensitivity of copper azide is the top priority of the research. The main way to reduce the electrostatic sensitivity of copper azide is to compound materials with strong conductivity (such as CNTs, carbonized MOF materials, etc.) with it to reduce its electrostatic sensitivity and prevent it from explosion due to electrostatic induction without reducing the its detonation capability. [0003] The applications of metal-organic framework compounds in energetic materials are divided into two categories, namely: constructing E-MOFs by coordination with energetic organic functional ligands and metal central ions; preparing composite E-MOFs with...

Claims

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Application Information

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IPC IPC(8): C06B35/00C06B21/00C06B45/30C01B32/05C01B21/08
CPCC06B35/00C06B21/0008C06B45/30C01B32/05C01B21/08C01P2004/80Y02P20/54
Inventor 胡艳刘旭文宿佳鑫宋凯叶迎华沈瑞琪
Owner NANJING UNIV OF SCI & TECH
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