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A kind of surface metallized graphene and preparation method thereof

A surface metal, graphene technology, applied in the field of graphene, can solve the problems of poor metal interface wettability, difficult metal matrix composite, agglomeration, etc., to reduce production costs, shorten the process flow, and improve the effect of wettability

Inactive Publication Date: 2021-03-30
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Graphene has a large specific surface area (2600m 2 / g), the unit weight is light, easy to agglomerate, and the wettability of the metal interface is very poor, and the density of graphene is much lower than that of aluminum, magnesium and other metals, and it is easy to float in the metal melt. Compared with carbon fiber, For traditional metal matrix composite reinforcements such as silicon carbide, it is difficult for graphene to be evenly distributed in the metal, and it is difficult to form a good composite with the metal matrix.

Method used

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  • A kind of surface metallized graphene and preparation method thereof
  • A kind of surface metallized graphene and preparation method thereof
  • A kind of surface metallized graphene and preparation method thereof

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preparation example Construction

[0026] This embodiment provides a method for preparing surface metallized graphene by electroplating, the process flow is as follows figure 1 As shown, it specifically includes the following steps:

[0027] s1: Put graphite paper of 4cm*10cm as the anode and platinum wire as the cathode, put it into 98% concentrated sulfuric acid, connect a 1.5-2.5V DC power supply between the anode and the cathode, and react for 15-25min to obtain plug layer graphite;

[0028] Intercalated graphite is used as anode, platinum wire is used as cathode, 40%-60% sulfuric acid is used as electrolyte, connected to 4.5-6.5V DC power supply, and intercalated graphite is slowly put into the electrolyte to obtain graphite oxide;

[0029] After the graphite oxide is filtered and washed by centrifugation, ultrasonic dispersion is carried out for 2-3 hours to obtain a 0.3-0.5 g / L graphene oxide solution.

[0030] s2: Take copper as the anode, titanium as the cathode, copper sulfate solution with a concen...

Embodiment 1

[0034] (1) Take 200ml of 98% concentrated sulfuric acid, put it into a 250ml beaker, take completely dry graphite paper 4cm*10cm as the anode, platinum wire as the cathode, connect it to a 1.5V DC power supply, react for 15min, and take out the intercalated Graphite paper to remove adsorbed sulfuric acid.

[0035] (2) The graphite paper after intercalation is an anode, the platinum wire is a cathode, and 40% sulfuric acid is an electrolyte. Get 200ml of 40% sulfuric acid and put it into a 250ml beaker, insert a 4.5V DC power supply, and put the graphite paper after the intercalation Slowly inserted into the electrolyte, the expanded graphite oxide was collected, filtered several times, washed with deionized water, and then ultrasonically treated.

[0036] (3) With titanium and copper as cathode and anode plates respectively, in 40g / L copper sulfate solution, under DC power supply, the current density is 0.015A / cm 2 , the temperature is 15°C, and a 2 μm copper film is pre-plat...

Embodiment 2

[0041] (1) Take 200ml of 98% concentrated sulfuric acid, put it into a 250ml beaker, take completely dry graphite paper 4cm*10cm as the anode, platinum wire as the cathode, connect it to a 2.5V DC power supply, react for 25min, and take out the intercalated Graphite paper removes adsorbed sulfuric acid.

[0042] (2) The graphite paper after intercalation is the anode, the platinum wire is the negative electrode, and 60% sulfuric acid is the electrolyte. The sulfuric acid of 200ml60% is put into a 250ml beaker, connected to a 6.5V DC power supply, and the graphite paper after the intercalation is Slowly inserted into the electrolyte, the expanded graphite oxide was collected, filtered several times, washed with deionized water, and then ultrasonically treated.

[0043] (3) With titanium and copper as cathode and anode plates respectively, in 70g / L copper sulfate solution, under DC power supply, the current density is 0.030A / cm 2 , the temperature is 30°C, and a 2 μm copper fil...

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Abstract

The invention relates to the technical field of metal matrix composite reinforcements, and in particular to a surface metallized graphene and a preparation method thereof. Mix the graphene oxide dispersion and activator in the electroplating solution, use titanium as the cathode and copper as the anode plate to connect to direct current for electroplating, so that graphene oxide is deposited on the surface of the surface that has been plated with a layer of copper film during the electroplating process. On the titanium plate, a composite coating containing copper and graphene oxide is formed on the titanium plate. The composite coating is collected to obtain surface metallized graphene. The surface metalized graphene includes a metal film wrapped on the surface of graphene oxide. The metal film is metal Copper film. The invention does not need to introduce a connecting medium, greatly shortens the process flow and reduces production costs. At the same time, the preparation raw materials can be recycled, no waste liquid is generated, and is environmentally friendly. It also improves the wettability between graphene and the metal matrix and solves the problem of graphite. The problem of uniform dispersion of alkenes in metal matrix.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a surface metallized graphene and a preparation method thereof. Background technique [0002] Compared with traditional matrix alloys, metal matrix composites have high specific strength, high specific stiffness, high specific modulus, excellent high-temperature mechanical properties and low thermal expansion coefficient, and have very wide applications in aviation, aerospace, automobile, electronics and transportation industries prospect. According to different reinforcements, metal matrix composites can be divided into fiber reinforced metal matrix composites, particle reinforced metal matrix composites and whisker reinforced metal matrix composites. Graphene is the strongest substance known to man, and its density is only 1 / 5 of that of steel, making it the best reinforcement for metal matrix composites. [0003] Graphene has a large specific surface area (2600m 2 / g), the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/38C25D5/54C25D7/00
CPCC25D3/38C25D5/54C25D7/00
Inventor 刘奎仁王春新李斌川韩庆陈建设布祖然
Owner NORTHEASTERN UNIV LIAONING
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