Nano energy-containing material prepared by functional graphene and method thereof

A graphene and graphene oxide technology, applied in explosives and other directions, can solve the problems of high activity of nano aluminum layer, high equipment and poor stability, and achieve easy control of performance, increase reaction pressure, and improve structural order. Effect

Active Publication Date: 2016-12-21
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has high requirements on instruments and equipment, and the nano-aluminum layer covered on the nano-oxide has high activity, which is easily inactivated in long-term storage and has poor stability.

Method used

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  • Nano energy-containing material prepared by functional graphene and method thereof
  • Nano energy-containing material prepared by functional graphene and method thereof
  • Nano energy-containing material prepared by functional graphene and method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0011] to combine figure 2 , the present invention utilizes functionalized graphene to prepare the preparation method of nano energy-containing material The specific steps are as follows:

[0012] Step 1: Prepare GO by the improved Hummers method, wash to neutral, and dry under vacuum;

[0013] Step 2, disperse the GO powder in deionized water, form a suspension after ultrasonication, add a halogenating agent, stir the reaction, and absorb the exhaust gas through the reflux device;

[0014] Step 3, diluting the reacted mixed solution in step 2 with deionized water, adding an alkaline solution, neutralizing the mixed solution to neutrality, and drying under vacuum conditions after suction filtration to obtain halogenated graphene;

[0015] Step 4, pouring the configured energetic compound solution into the reactor, adding the halogenated graphene prepared in step 3 into the mixed solution, keeping it warm, and obtaining the energetic graphene grafted with the energetic compou...

Embodiment 1

[0022] The present invention utilizes functionalized graphene to prepare the preparation method of nano energy-containing material. The specific steps are as follows:

[0023] Step 1: GO was prepared by the improved Hummers method, washed to neutral, and dried in vacuum at 50°C;

[0024] Step 2, disperse 0.2g GO powder in 50mL deionized water, form a suspension after ultrasonication for 3 hours, add 20mL halogenated agent concentrated HBr, stir and react at 60°C for 8 hours, and absorb exhaust gas through the reflux device;

[0025] Step 3, diluting the reacted mixed solution of step 2 with deionized water, adding a certain amount of NaOH solution, neutralizing the mixed solution to neutrality, and drying under vacuum conditions after suction filtration to obtain graphite halide;

[0026] Step 4, take 100mg 2,4,6-trinitrophenol, 30mg K 2 CO 3 and 10mL of N,N-dimethylformamide in a three-necked flask to prepare a mixed solution, add the halide graphite prepared in step 3 into...

Embodiment 2

[0032] The present invention utilizes functionalized graphene to prepare the preparation method of nano energy-containing material. The specific steps are as follows:

[0033] Step 1 to step 4 are the same as step 1 to step 4 in the example 1;

[0034] Step 5, disperse 20mg of energetic graphene in N,N-dimethylformamide, after ultrasonic dispersion, disperse 0.099mg of nano-Al particles in N,N-dimethylformamide and isopropanol solution in the mixed solution;

[0035] Step 6, disperse 0.281g of nano-NiO particles in the mixed solution of N,N-dimethylformamide and isopropanol solution, after ultrasonic dispersion, add the nano-Al particle suspension prepared in step 5, and continue ultrasonic dispersion 2 hours;

[0036] Step 7: After ultrasonication, let it stand still, absorb the clear night of the upper layer, and place it in a vacuum drying oven at 65° C. for 8 hours to obtain an energetic graphene / Al / NiO nanocomposite energetic material.

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Abstract

The invention provides a nano energy-containing material prepared by functional graphene and a method thereof. The method is characterized in that a halogenation agent and graphene oxide are subjected to electrophilic addition to generate halogenated graphite, then an energy-containing compound is grafted to graphene through a substitution reaction, the functional energy-containing graphene can be formed, then nano aluminum and nano metal oxide are arranged on the energy-containing graphene through a self assembly method, so that high-performance ternary energy-containing material can be prepared. The energy-containing material increases the ordering performance of a mixture in the nano thermite component and can reduce the agglomeration of the nano particles at certain degree, the energy-containing compound grafted on the graphene contains lots of energy-containing groups such as nitro-group, and the energy-containing material has important promotion effect for increasing the heat released by the nano thermite and increasing the reactive properties.

Description

technical field [0001] The invention belongs to the preparation technology of nanocomposite energetic materials, in particular to a method for preparing nanometer energetic materials using functionalized graphene. Background technique [0002] Since Begetov, a Russian scientist, discovered the phenomenon of thermite reaction in the 18th century, as a high-quality, high-energy density, high-safety energetic material, the development of thermite has gone through a history of 200 years. And widely used in metallurgy, welding, military and other fields. In a broad sense, the main body of thermite is a mixture of aluminum powder and a metal or non-metal oxide with strong oxidizing properties, such as Fe 2 o 3 , NiO, CuO, etc., after being initiated by heat or mechanical force, a violent redox reaction can occur and a large amount of heat can be released. In traditional thermites, the separation of oxidant and reductant internal particles leads to a slow combustion rate, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/10
CPCC06B33/10
Inventor 杨叶熊文慧张文超秦志春叶家海田桂蓉
Owner NANJING UNIV OF SCI & TECH
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