Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of method for preparing graphene-metal composite material based on pulsed magnetic oscillation

A metal composite material, graphene technology, applied in graphene, nano-carbon and other directions, can solve the problem of poor bonding strength between graphene and metal, and achieve the effects of stable product quality, improved interface bonding, mechanical properties and thermal properties.

Active Publication Date: 2018-09-28
玛雅森林(北京)国际科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention integrates the preparation and compounding of graphene, and solves the defects that graphene is difficult to uniformly disperse in the metal matrix in the traditional method, and the interface bonding strength between graphene and metal is poor. The most important thing is to creatively prepare graphite by pulse magnetic oscillation Graphene-metal composite materials can ensure that graphene is uniformly dispersed in metals and at the same time obtain composite materials with smaller grain size, which is conducive to improving its mechanical properties and thermal properties, and has a good application prospect

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 kind of method for preparing graphene-metal composite material based on pulsed magnetic oscillation
  • A kind of method for preparing graphene-metal composite material based on pulsed magnetic oscillation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing graphene-metal composite materials based on pulsed magnetic oscillation, the specific process of preparing graphene-metal composite materials is as follows:

[0031] First, add 5kg of natural flake graphite to 2kg of concentrated sulfuric acid, then add 7kg of acetic anhydride, 0.5kg of hydrogen peroxide and 0.6kg of potassium dichromate in sequence, stir continuously, react at 40°C for 70min, wash until neutral, and Dry at 60°C. It is then exfoliated at a high temperature of 900 °C to obtain expanded graphite. Then, heat and melt 100kg of metal aluminum in a resistance furnace, and preheat the crucible equipped with a temperature acquisition device at the same time. After pouring the molten aluminum into the crucible at 700°C, add the pretreated expanded graphite Disperse evenly on the surface of metal aluminum melt and keep it warm for 30min. When the temperature of the metal aluminum melt drops below the liquidus line, the crucible is placed ...

Embodiment 2

[0034] A method for preparing graphene-metal composite materials based on pulsed magnetic oscillation, the specific process of preparing graphene-metal composite materials is as follows:

[0035] First, add 5kg of natural flake graphite to 2.5kg of concentrated sulfuric acid, then add 7.6kg of acetic anhydride, 0.4kg of hydrogen peroxide and 0.7kg of potassium dichromate in sequence, keep stirring, react at 50°C for 60min, and wash until neutral. and dried at 60°C. It is then exfoliated at a high temperature of 900 °C to obtain expanded graphite. Then, heat and melt 111kg of metal aluminum in a resistance furnace, and preheat the crucible equipped with a temperature acquisition device at the same time. After pouring the molten aluminum into the crucible at 720°C, add the pretreated expanded graphite Disperse evenly on the surface of metal aluminum melt and keep it warm for 30min. When the temperature of the metal aluminum melt drops below the liquidus line, the crucible is p...

Embodiment 3

[0038] A method for preparing graphene-metal composite materials based on pulsed magnetic oscillation, the specific process of preparing graphene-metal composite materials is as follows:

[0039] First, add 5kg of natural flake graphite to 3kg of concentrated sulfuric acid, then add 6.8kg of acetic anhydride, 0.6kg of hydrogen peroxide and 0.6kg of potassium dichromate in sequence, stir continuously, react at 55°C for 50min, wash until neutral, and Dry at 60°C. It is then exfoliated at a high temperature of 900 °C to obtain expanded graphite. Then, heat and melt 125kg of metal aluminum in a resistance furnace, and preheat the crucible equipped with a temperature acquisition device at the same time. After pouring the molten aluminum into the crucible at 720°C, add the pretreated expanded graphite Disperse evenly on the surface of metal aluminum melt and keep it warm for 30min. When the temperature of the metal aluminum melt drops below the liquidus line, place the crucible in...

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
strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of preparing graphene-metal composite materials, and provides a method for preparing graphene-metal composite materials based on pulsed magnetic oscillation. In this method, graphite is continuously stretched and stripped into graphene by using a pulsed magnetic field during the metal condensation process, and at the same time, the electromagnetic oscillating force breaks the metal dendrites, and the graphene contacts the metal at the grain level, thereby obtaining fine grains and graphite. Graphene-metal composites with homogeneous dispersion of ene. Compared with the traditional method, the invention can not only exfoliate and prepare graphene, solve the dispersion problem of graphene, but also obtain a composite material with smaller grain size and better mechanical properties.

Description

technical field [0001] The invention relates to the field of preparation of graphene-metal composite materials, in particular to a method for preparing graphene-metal composite materials based on pulsed magnetic oscillation. Background technique [0002] In recent years, metal matrix composites have received widespread attention, and they have great application potential in aerospace, military, rail transportation, thermal control materials, and other civilian fields. The United States, Japan, and the United Kingdom have conducted research on metal matrix composites earlier and invested heavily. my country is still in its infancy, and has not yet formed a complete R&D and production industry. Due to the strict confidentiality of related technologies and products in foreign countries, the possibility of transferring related technologies is very small. my country needs to invest a lot of research in this area and develop metal matrix composite materials with independent intell...

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): C22C1/02C22C1/10C22C32/00C01B32/19
CPCC22C1/1005C22C1/1036C22C32/0084C22C1/1047
Inventor 陈庆曾军堂陈兵
Owner 玛雅森林(北京)国际科技有限公司