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Preparation method of armor material

An armor material, copper alloy technology, applied in transportation and packaging, metal processing equipment, etc., can solve the problems of large specific surface area, easy agglomeration, small size, etc., to achieve simple process operation, avoid uneven distribution, and high production efficiency. Effect

Inactive Publication Date: 2017-05-31
中航装甲科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene has the problems of small size, large specific surface area, difficulty in dispersing, and easy agglomeration. Therefore, how to realize the uniform dispersion of graphene in the copper matrix is ​​the key technology that needs to be broken through in the preparation of graphene-copper composite materials.

Method used

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  • Preparation method of armor material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a method for preparing an armor material, and the specific steps are as follows:

[0035] The graphene-coated copper alloy powder includes the following components in parts by weight: 0.05% of graphene and 99.95% of copper alloy. Graphene can be prepared by Hummer's method. The copper alloy has the following components by mass percentage: Pb: 0.003%; O: 0.02%; the balance is Cu and unavoidable impurities; the particle size of the copper alloy powder is 60 μm.

[0036] 1) after the graphene is ultrasonically dispersed in the alcohol solution of 95% by concentration, then it is 9000rpm to place the rotating speed, and the linear speed is in the centrifugal nano-disperser of 115m / s to obtain the graphene alcohol solution after the centrifugal dispersion, the In the graphene alcohol solution, graphene nanosheets with less than 10 layers account for more than 90% of all graphene nanosheets;

[0037] 2) The graphene nanosheet organic solution is ato...

Embodiment 2

[0041] The graphene-coated copper alloy powder includes the following components in parts by weight: 9% graphene and 91% copper alloy. The copper alloy has the following components by mass percentage: Bi: 0.01%; O: 0.04%; the balance is Cu and unavoidable impurities. The particle size of the copper alloy powder was 10 μm.

[0042] 1) after the graphene is ultrasonically dispersed in the alcohol solution of 95% concentration, then it is 8000rpm to place the rotating speed, and the linear speed is in the centrifugal nano-disperser of 100m / s to obtain the graphene alcohol solution after the centrifugal dispersion, the In the graphene alcohol solution, graphene nanosheets with less than 10 layers account for more than 90% of all graphene nanosheets;

[0043] 2) The graphene nanosheet organic solution is atomized into small droplets through a spray device with a shower mesh size of 100 μm under pressure, and evenly sprinkled on the copper and / or copper alloy powder rotating in a h...

Embodiment 3

[0047] The graphene-coated copper alloy powder includes the following components in parts by weight: 5% graphene and 95% copper alloy. The copper alloy has the following components by mass percentage: Bi≤0.005%; Pb: 0.003%; the balance is Cu and unavoidable impurities. The particle diameter of the copper alloy powder was 100 μm.

[0048]1) After graphene is ultrasonically dispersed in an organic solvent (concentration is 20% alcohol solution), then it is placed in a centrifugal nano-disperser with a speed of 7000rpm and a line speed of 85m / s to obtain the centrifugally dispersed graphene nanometer. Sheet organic solution, in the graphene nanosheet organic solution, the number of graphene nanosheet layers below 10 accounts for more than 90% of all graphene nanosheets;

[0049] 2) The graphene nanosheet organic solution is atomized into small droplets through a spray device with a shower mesh size of 180 μm under pressure, and evenly sprinkled on the copper and / or copper alloy ...

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Abstract

The invention provides a preparation method of an armor material. The armor material is prepared from following components in percentage by mass: smaller than or equal to 0.01% of Bi, smaller than or equal to 0.003% of Pb, smaller than or equal to 0.04% of O and the balance Cu and inevitable impurities. The preparation method includes the following steps that a graphene nanosheet organic solution with the number of layers being smaller than 10 is prepared; copper and / or copper alloy powder is coated with graphene; and the coated graphene / copper alloy powder is mixed for 20-100 min in a mixer, and then the graphene / copper alloy composite armor material is obtained. According to the method, the graphene is more evenly dispersed in the metal powder, the surface of the copper alloy powder is evenly coated with graphene nanosheets, and high-quality interface bonding is formed; and the process is simple, the production efficiency is high, and large-scale industrialization is promoted.

Description

technical field [0001] The invention relates to a composite material, in particular to a preparation method of an armor material. Background technique [0002] Graphene is a two-dimensional nanomaterial composed of carbon atoms in a single-layer sheet structure (thickness is only a few nanometers). Due to its unique two-dimensional honeycomb crystal structure and extremely high bond strength, graphene is currently known as the world's highest specific strength and hardest nanomaterial, with a breaking strength as high as 130Gpa. Therefore, using the high strength of graphene and compounding it with metal materials, a graphene-metal composite material is prepared, which is a new type of high-strength and high-toughness metal matrix composite material. [0003] At present, there are two main methods for the compounding of graphene and metal: melting casting method and powder metallurgy method. When the graphene-copper composite material is prepared by the melting casting met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C9/04C22C1/05B22F1/02
CPCC22C1/05C22C9/00C22C9/04C22C32/0084B22F1/16
Inventor 郭建强王旭东李炯利王胜强陈子
Owner 中航装甲科技有限公司
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