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Graphene-based carbohydrazide metal complex crystal energetic material and preparation method thereof

A technology of metal complexes and alkenyl carbohydrazides, applied in explosives and other directions, can solve the problems of low laser ignition efficiency and complex preparation process, and achieve the effects of reduced nitrogen content, high crystal density and low laser ignition energy

Active Publication Date: 2017-07-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a graphene-based carbohydrazide metal complex crystal energetic material and its preparation method to solve the problems of low laser ignition efficiency and complicated preparation process of photosensitive insensitive energetic materials in the prior art

Method used

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  • Graphene-based carbohydrazide metal complex crystal energetic material and preparation method thereof
  • Graphene-based carbohydrazide metal complex crystal energetic material and preparation method thereof
  • Graphene-based carbohydrazide metal complex crystal energetic material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0040] The preparation method of graphene-based carbohydrazide copper nitrate complex crystal comprises the following process steps:

[0041] Preparation of graphene oxide: Add 1g of natural flake graphite powder with a particle size of 120 mesh to 25mL of concentrated sulfuric acid at 0°C, then add 3g of potassium permanganate, control the temperature of the mixture below 10°C and stir for 2h, then stir at room temperature for 24h Finally, 100 mL of deionized water was slowly added dropwise under ice bath conditions. After about 20 min, 300 mL of deionized water (containing 5 mL of 30% hydrogen peroxide) was added. After the mixture turns bright yellow, perform suction filtration, then wash with 500ml of 10% hydrochloric acid, and vacuum dry at 60°C for 48 hours to obtain graphite oxide; in addition, graphite oxide can also be purchased as industrial grade graphite oxide, but it contains Oxygen needs ≥ 45%.

[0042] Preparation of graphene oxide suspension:

[0043] Graphe...

Embodiment 2

[0056] The preparation method of graphene-based carbohydrazide cobalt nitrate complex crystal comprises the following process steps:

[0057] Preparation of graphite oxide: Add 1g of natural flake graphite powder with a particle size of 120 mesh to 25mL of concentrated sulfuric acid at 0°C, then add 3g of potassium permanganate, control the temperature of the mixture below 10°C and stir for 2h, then stir at room temperature for 24h Finally, 100 mL of deionized water was slowly added dropwise under ice bath conditions. After about 20 min, 300 mL of deionized water (containing 5 mL of 30% hydrogen peroxide) was added. Suction filtration was performed after the mixture turned bright yellow, washed with 500 ml of 10% hydrochloric acid, and vacuum-dried at 60° C. for 48 hours to obtain graphene oxide.

[0058] Preparation of graphene oxide suspension: weigh 28.1 mg of the above graphene oxide into 30 mL of water, and ultrasonically disperse for 30 minutes to obtain graphene oxide ...

Embodiment 3

[0066] A method for preparing graphene-based carbohydrazide nickel nitrate complex crystals, comprising the following process steps:

[0067] Preparation of graphite oxide: see Example 1.

[0068] Preparation of graphene oxide suspension: Add 28.1 mg of graphene oxide into 30 mL of dimethylformamide (DMF), ultrasonically disperse for 1 hour, and form the graphene oxide suspension.

[0069] First add 10 mg of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) to the graphene oxide suspension, and then add 5 mg of N-hydroxysulfosuccinyl after reacting for 1 h imine, after 30 minutes of reaction, the activated precursor of graphene oxide was obtained;

[0070] Disperse the activated graphene oxide precursor in water for 30 minutes by ultrasonic dispersion, add 15 mg of carbohydrazide, and react for 4 hours after ultrasonic dispersion for 10 minutes. The reaction temperature is controlled at about 65 ° C. Finally, it is washed and filtered with deionized water, and dried in vac...

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Abstract

The invention discloses a preparation method for a graphene-based carbohydrazide metal complex crystal energetic material. The preparation method comprises the following steps: S1, dispersing graphene oxide with oxygen content of no less than 45% into water or an organic solvent for 30 to 60 min so as to obtain a graphene oxide suspension; reacting the graphene oxide suspension with a coupling agent at 55 to 65 DEG C for 1.5 to 2 h so as to obtain a graphene oxide activated precursor; dispersing the graphene oxide activated precursor in a dispersing agent I for 30 to 50 min, adding carbohydrazide and carrying out a reaction at 60 to 70 DEG C for 4 h so as to obtain carbohydrazide functionalized graphene oxide; and S4, subjecting the carbohydrazide functionalized graphene oxide prepared in step 3 to cleaning and filtering, then carrying out dispersion in a dispersing agent II for 15 to 60 min, adding a carbohydrazide solution, then adding nitrate or perchlorate, carrying out a reaction at 75 to 85 DEG C for 15 to 60 min and then carrying out vacuum drying so as to obtain the graphene-based carbohydrazide metal complex crystal energetic material. The graphene-based carbohydrazide metal complex crystal energetic material prepared by the invention overcomes the problems of low laser ignition efficiency and complex preparation technology of photosensitive insensitive energetic materials.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of energetic materials, and in particular relates to a graphene-based carbohydrazide metal complex crystal energetic material and a preparation method thereof. [0003] 【Background technique】 [0004] Since the advent of graphene materials in 2004, due to its unique two-dimensional molecular structure and excellent optical, electrical and mechanical properties, it has attracted widespread attention (Wang Lili, Yu Jianguo, Chang Juanjuan, Wang Changchun, a loaded metal Preparation method of nickel oxide micro-mesoporous carbon material, CN102013330A). At present, the carbohydrazide complexes of transition metals such as copper, nickel, cobalt, zinc, and cadmium have been extensively studied, and have been applied to include detonators (Zhang Tonglai, Yang Li, a safety detonator, CN203513524 U; Zhang Tonglai, Yang Li, A safety detonator, CN103148745 B), gas generating agent (Sun, Y.H., Zhang, T.L., Zh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/04
CPCC06B33/04
Inventor 严启龙刘佩进何国强吕翔
Owner NORTHWESTERN POLYTECHNICAL UNIV
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