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Preparation method of graphene-based composite energetic material

A graphene-based material, graphene-based technology, applied in attack equipment, nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, non-explosive/non-thermal agent components, etc., can solve the problem of poor dispersion of ultrafine explosive particles , affecting the output energy of explosives, losing the properties of nano-explosives, etc., to achieve the effects of easy industrialization, simple and easy preparation methods, and reduced mechanical sensitivity

Active Publication Date: 2016-12-14
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The following problems exist in the explosive particles obtained by the current explosive refinement technology: first, the refinement effect is not obvious, and the particle size of the obtained explosives is mostly above the micron level, and the problem of crystal transformation is serious; second, despite some special methods Processing can obtain nano-scale explosive particles, but the ultra-fine explosive particles obtained have poor dispersion in practical applications and lose the properties of nano-explosives; the third, traditional insensitive agents (for example, graphite, stearic acid, paraffin wax) ) is poor in insensitivity, and will also affect the output energy of explosives

Method used

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  • Preparation method of graphene-based composite energetic material
  • Preparation method of graphene-based composite energetic material
  • Preparation method of graphene-based composite energetic material

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Experimental program
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Effect test

Embodiment 1

[0036] The preparation method of graphene oxide (GO) mainly comprises the following steps:

[0037] Add 50mL of concentrated sulfuric acid into a three-necked flask, put it into a low temperature constant temperature reaction bath, control the temperature below 0°C, add 2g flake graphite and 1g NaNO under stirring 3 , slowly add 7g of potassium permanganate, after a period of reaction, move the three-necked flask into a water bath at 35°C, continue the reaction for 2h, and then slowly add 90ml of deionized water. After that, the temperature was raised to 90°C, and 150ml of deionized water was added to terminate the reaction, and then a certain amount of hydrogen peroxide was added to reduce the unreacted oxidant until no bubbles were generated. Finally, the graphene oxide powder is obtained after washing with dilute hydrochloric acid and deionized water, dialysis, centrifugation and drying.

[0038]Pour 0.5g of graphene oxide into 100ml of n-heptane, ultrasonically disperse e...

Embodiment 2

[0040] In this embodiment, graphene oxide (GO) adopts the graphene oxide prepared in embodiment 1.

[0041] Pour 0.1g of graphene oxide into 100mL of 1,2-dichloroethane, ultrasonically disperse evenly; then pour the above suspension together with 9.9g of HMX and 200g of grinding balls into a grinding jar, stir to make it even and then seal it. The diameter of the ball mill jar is 7cm, and the diameter of the grinding ball is a mixture of 0.1mm and 0.3mm. Fix the ball mill jar on the ball mill and grind at a speed of 400r / min for 5h. Afterwards, the grinding balls were sieved, filtered, washed, and freeze-dried to obtain the HMX / graphene oxide composite energetic material.

Embodiment 3

[0043] In this embodiment, graphene oxide (GO) adopts the graphene oxide prepared in embodiment 1.

[0044] Weigh 0.5 g of graphene oxide and place in 100 mL of deionized water, and ultrasonically disperse for 30 min to obtain a stable graphene oxide aqueous dispersion. Place it in a water bath at 90°C, slowly add 2 mL of 80% hydrazine hydrate solution dropwise under mechanical stirring, and react for 4 hours, the solution turns from brown to black. The solution was suction filtered, washed and dried. The dried product was collected to obtain graphene. The prepared graphene such as Figure 4 shown, from Figure 4 It can be seen that the prepared graphene is in the form of flakes, the flakes are relatively thin, and the distance between layers is relatively large, indicating that graphene has been successfully prepared.

[0045] Pour 0.1g of graphene into 100ml of absolute ethanol, and ultrasonically disperse evenly; then pour the above suspension, 9.9g of HMX and 200g of g...

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Abstract

The invention belongs to the technical field of preparation of high-energy insensitive energetic materials and in particular relates to a preparation method of a graphene / explosive composite energetic material. The preparation method comprises the following steps: mixing graphene materials with explosive in mass ratio of 1:99-5:95, putting the mixture, solution and grinding balls into a ball grinding tank, fixing on a ball milling machine, grinding for 3-10 hours at a rotating speed of 200-400r / min, then screening out the grinding balls from the obtained solution, filtering, washing, and carrying out freeze drying, so that the graphene-based composite energetic material is obtained. The method adopted by the invention realizes integration of refining and coating technology, particles of the prepared product are small and uniformly distributed, and insensitivity of graphene and graphene oxide is utilized for preparing a high-energy insensitive composite energetic material.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-energy insensitive energetic materials, and in particular relates to a preparation method of graphene / explosive composite energetic materials. Background technique [0002] In order to meet the needs of modern weapons, people have put forward higher and higher requirements for the survivability and damage ability of ammunition on the battlefield. performance. Only explosives with high energy output and high safety performance can meet the application requirements to the greatest extent and produce the greatest practical efficacy. It is well known that the sensitivity and explosive properties of explosives not only depend on the molecular structure of explosives, but also are closely related to the physical properties of explosive crystals (such as particle size, particle size distribution, crystal morphology, etc.). There are many ways to reduce the sensitivity of explosives. One eff...

Claims

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Application Information

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IPC IPC(8): C06B45/18C06B23/00C06B25/34
CPCC06B23/005C06B25/34C06B45/18
Inventor 叶宝云安崇伟王晶禹李鹤群
Owner ZHONGBEI UNIV
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