Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for preparing graphene nanocomposite energetic materials using atomic layer deposition technology

A technique of atomic layer deposition and nanocomposite, applied in the direction of nanotechnology, metal material coating process, coating, etc., can solve the problem of lack of effective control of distribution and load density, and the inability to control the affinity and spatial exclusion of metal fuels and oxidants. To achieve the effects of easy implementation and promotion, improved spatial arrangement and affinity, and complete combustion reaction

Active Publication Date: 2018-04-27
XIAN MODERN CHEM RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above methods can effectively control the size, distribution and loading density of nanometer metal or oxide particles loaded on the surface of graphene.
At the same time, the above methods cannot control the affinity and spatial arrangement of metal fuels and oxidants.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing graphene nanocomposite energetic materials using atomic layer deposition technology
  • A method for preparing graphene nanocomposite energetic materials using atomic layer deposition technology
  • A method for preparing graphene nanocomposite energetic materials using atomic layer deposition technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a method for preparing a graphene-loaded nano-aluminum powder composite energetic material by atomic layer deposition technology, and the method specifically includes the following steps:

[0040] Step 1: Preparation of graphene-supported nano-aluminum powder

[0041] (1) Add 0.1 g of graphene oxide and 100 g of N,N-dimethylformamide into an ultrasonic reactor, and obtain graphite oxide at an ultrasonic power of 1000 W, a frequency of 200 Hz, a temperature of 60 ° C, and an ultrasonic dispersion time of 2 hours. Alkene suspension.

[0042] (2) Prepare N,N-dimethylformamide (100g) and isopropanol (100g) as a co-solvent, add 2g of nano-aluminum powder into the co-solvent, and disperse with the aid of ultrasound. The ultrasonic power is 1000W and the frequency is 200Hz. The temperature was 60° C., and the ultrasonic dispersion time was 2 hours to obtain a stable dispersed nano-aluminum powder suspension. Add 100 g of graphene oxide suspension to ...

Embodiment 2

[0057] This example provides a method for preparing a graphene-loaded nano-aluminum powder composite energetic material by atomic layer deposition technology. Step 1 of the method is the same as Step 1 in Example 1, except for Step 2.

[0058] Step 2: Preparation of graphene nanocomposite energetic materials by atomic layer deposition

[0059] The graphene-supported nano-aluminum powder is placed in the reaction chamber of the vapor phase atomic layer deposition system, and the reaction chamber is sealed. Nitrogen gas was introduced into the vapor deposition system and vacuumed, the pressure was controlled at 133Pa, and the temperature was controlled at 200°C.

[0060] Atomic layer deposition is performed on graphene-supported nano-aluminum powder to form a coating film. A cycle of atomic layer deposition growth includes the following four steps:

[0061] (1) Inject tris(2,2,6,6-tetramethyl-3,5-heptanedionate bismuth) Bi(thd) into the reaction chamber 3 , so that it will und...

Embodiment 3

[0069] This example provides a method for preparing a graphene-loaded nano-aluminum powder composite energetic material by atomic layer deposition technology. Step 1 of the method is the same as Step 1 in Example 1, except for Step 2.

[0070] Step 2: Preparation of graphene nanocomposite energetic materials by atomic layer deposition

[0071] The graphene-supported nano-aluminum powder is placed in the reaction chamber of the vapor phase atomic layer deposition system, and the reaction chamber is sealed. Nitrogen was introduced into the vapor deposition system and vacuumed, the pressure was controlled at 133 Pa, and the temperature was controlled at room temperature.

[0072] A cycle of atomic layer deposition of graphene-supported nano-aluminum powder includes the following four steps:

[0073] (1) Inject the first precursor tin tetrachloride (SnCl 4 ) to make it react with the surface of the graphene-supported nano-aluminum powder composite powder in a saturated surface c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a graphene nano-composite energetic material through an atomic-layer deposition technology. The method includes the steps that graphene loaded nanometer metal compound powder is prepared through an ultrasonic-assisted solution mixing and in-situ reduction method, so that even scattering of nanometer metal on the surface of graphene is achieved; and then, the gas-phase atomic-layer deposition technology is adopted, two different precursors pass through a reaction cavity alternately, the precursors make contact with the surface of the graphene / nanometer metal compound powder fully, a chemical reaction is set off, and oxides are generated. By means of the method, the oxides wrap the graphene surface and the nanometer metal surface evenly. According to the graphene nano-composite energetic material prepared through the method, the affinity between the oxides and the nanometer metal surface is increased, and spatial arrangement is improved. Due to the addition of the graphene, the scattering situation of the nanometer metal is improved, and the energy release rate of the energetic material is increased. The method is high in automation degree and good in safety, the material can be directly used without after-treatment, and mass production of the graphene nano-composite energetic material is achieved easily.

Description

technical field [0001] The invention relates to a method for preparing a graphene nanocomposite energetic material, belonging to the technical field of nanomaterial preparation. Background technique [0002] The addition of nanometer metal powder to the propellant can improve the combustion performance of the propellant and significantly increase its energy level. The affinity and spatial arrangement between nanometer metals and oxidizers, catalysts, and energetic components of propellants have a significant impact on the combustion performance and combustion kinetics of propellants. The larger the contact area between the nano-metal particles and the oxidant and other components, the more complete the combustion reaction and the higher the energy level of the propellant. However, the extremely high specific surface area of ​​nano-metal powder usually leads to powder agglomeration and reduces the reactivity, which restricts its further application in the field of propellant...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/455C23C16/40B82Y40/00
CPCB82Y40/00C23C16/40C23C16/4417C23C16/45525
Inventor 闫宁冯昊秦利军龚婷惠龙飞李建国黄钰张王乐
Owner XIAN MODERN CHEM RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com