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Foam graphene-based metal azide compound and preparation method thereof

A technology of foamed graphene and composites, applied in the direction of metal azide composition, graphene, azide/azide/halogen azide, etc., can solve the problems of poor ignition ability and achieve low electrostatic sensitivity , strong security effect

Active Publication Date: 2020-07-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of miniature detonation systems, traditional detonators cannot meet the characteristic requirements of low input and high output, and it is particularly challenging to develop and synthesize detonators suitable for micro detonation systems.
Lead azide is widely used due to its high detonation ability, but its ignition ability is poor, and it needs to be added with igniting powder before it can be used.

Method used

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  • Foam graphene-based metal azide compound and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: raw material: copper acetate [(CH 3 COO) 2 Cu·H 2 O], sodium azide (NaN 3 ), graphene oxide (GO), stearic acid (CH 3 (CH 2 ) 16 COOH).

[0027] Main instruments and equipment: magnetic stirrer, super constant temperature water bath, measuring cylinder (5mL), glass bottle 15mL, constant temperature drying oven, hydrothermal reaction kettle, freeze dryer, tube furnace, round bottom flask, water bath.

[0028] Measure 15mL of water, add 60mg of graphene oxide, sonicate for 1h, add 0.24g of copper acetate to the spare A solution, sonicate and fully stir for 2h until it is uniformly dispersed, put the above-mentioned uniformly dispersed solution in a hydrothermal reaction kettle, and dry at constant temperature Hydrothermal reaction at 180°C in the box for 12 hours; filter and wash to obtain copper acetate and graphene composites, place the composites in liquid nitrogen, freeze-dry the frozen solids to obtain foamed graphene / copper acetate A for use; dry ...

Embodiment 2

[0029] Embodiment 2: raw material: nano copper powder (Cu), sodium azide (NaN 3 ), graphene oxide, stearic acid (CH 3 (CH 2 ) 16 COOH).

[0030] Main instruments and equipment: magnetic stirrer, super constant temperature water bath, measuring cylinder (5mL), glass bottle 15mL, constant temperature drying oven, hydrothermal reaction kettle, freeze dryer, tube furnace, round bottom flask, water bath.

[0031] Measure 13mL of water, add 60mg of graphene oxide, ultrasonic for 1h, weigh 0.4g of nano-copper powder, add 2mL of water and ultrasonically stir for 30min, slowly drop the graphene oxide solution into the stirring nano-copper dispersion, stir fully to make It is evenly dispersed, put the above-mentioned uniformly dispersed solution in a hydrothermal reaction kettle, and conduct a hydrothermal reaction in a constant temperature drying oven at 180°C for 12 hours; obtain a composite gel of graphene oxide, copper and its oxide, and place the composite in In liquid nitrogen...

Embodiment 3

[0032] Embodiment 3: raw material: nano lead oxide (PbO), sodium azide (NaN 3 ), graphene oxide, stearic acid (CH 3 (CH 2 ) 16 COOH).

[0033] Main instruments and equipment: magnetic stirrer, super constant temperature water bath, measuring cylinder (5mL), glass bottle 15mL, constant temperature drying oven, hydrothermal reaction kettle, freeze dryer, tube furnace, round bottom flask, water bath.

[0034] Measure 13mL of water, add 40mg of graphene oxide, ultrasonic for 1h, weigh 0.4g of nano-lead oxide, add 2mL of water and ultrasonically stir for 30min, slowly drop the graphene oxide solution into the stirring nano-lead oxide dispersion, stir fully Make it uniformly dispersed, put the above-mentioned uniformly dispersed solution in a hydrothermal reaction kettle, and conduct a hydrothermal reaction in a constant temperature drying oven at 180°C for 12 hours; obtain a composite gel of graphene oxide, lead oxide and its oxide, and combine The object is placed in liquid nitr...

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Abstract

The invention provides a foam graphene-based metal azide compound and a preparation method thereof. Soluble metal salt, nano metal powder or nano metal oxide is used as a raw material, graphene is used as a conductive carbon material carrier, and the foam graphene-based metal azide compound is prepared. The azide is a metal azide initiating explosive material based on foamed graphene, which is prepared by uniformly dispersing nano metal / metal oxide in a graphene oxide solution and carrying out high-temperature hydrothermal reduction reaction, freeze drying and in-situ azide reaction. Comparedwith the traditional azide, the foam graphene-based azide initiating explosive has the advantages that the particle size can reach hundreds of nanometers, the electrostatic sensitivity of the foam graphene-based azide initiating explosive can be greatly reduced due to the existence of the graphene conductive material, and the safety of the foam graphene-based azide initiating explosive is greatlyimproved.

Description

technical field [0001] The invention relates to a foamed graphene-based metal azide compound and a preparation method thereof, which is prepared by an in-situ azidation reaction method with a foamed graphene as a framework, using nanometer metals, metal oxides or soluble metal salts as raw materials The foamed graphene-based metal azide compound is used as a primer and belongs to the technical field of energetic materials. Background technique [0002] Primer is an initial energy substance that is very sensitive to external effects, and is widely used in detonation systems such as detonators and fuzes. With the development of micro-initiating systems, the traditional primary explosives cannot meet the characteristic requirements of low input and high output, and it is particularly challenging to develop and synthesize suitable primary explosives for micro-initiating systems. Lead azide is widely used due to its high detonation ability, but its ignition ability is poor, and ...

Claims

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Application Information

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IPC IPC(8): C01B32/184C01B21/08C06B35/00C06B21/00
CPCC01B21/08C06B21/00C06B35/00C01B32/184
Inventor 杨利闫振展韩纪旻
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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