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Carbon material film with high electric conductivity, heat conductivity and strength and preparing method thereof

A material film, carbon material technology, applied in the field of high electrical conductivity, thermal conductivity and high strength carbon material film and its preparation, can solve the problems of weak force, easy to be destroyed, mechanical strength, electrical conductivity and thermal conductivity cannot be superior at the same time, etc. To achieve good effect of improving electrical conductivity, electrical conductivity and thermal conductivity

Inactive Publication Date: 2016-11-23
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The graphene sheets used in the above method are all independent of each other. Although there are forces between molecules, such as van der Waals force, etc., the force formed by this non-chemical bond is relatively weak and easily destroyed. The strength of the film is low
In addition, since the graphene sheets are not really connected, the electrical and thermal conductivity of the film will not be very good.
Similar to the preparation of graphene films, the preparation of other carbon material films also has the problem that the mechanical strength, electrical conductivity and thermal conductivity cannot be superior at the same time.

Method used

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  • Carbon material film with high electric conductivity, heat conductivity and strength and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Put 50 parts of hydroxylated graphite powder, 50 parts of carboxylated graphite powder, 5 parts of polymethacrylic acid and 2000 parts of water in a ball mill jar, mill for 1 hour, and then ultrasonicate for 0.2 hours to obtain carbon material dispersion;

[0062] (2) Add 0.5 parts of hydroxyethyl cellulose and 0.1 parts of dibutyl phthalate to the carbon material dispersion, and sonicate for 0.2 hours to obtain a uniform and stable slurry;

[0063] (3) When forming, apply an electric field near the base belt with an electric field strength of 20kv / m; flow the slurry from the lower part of the hopper of the tape casting equipment to the base belt, and form a blank film through the relative movement of the base belt and the scraper and control its thickness 30μm;

[0064] (4) Immerse the blank film in dichloromethane (DCM), and add 0.1 part of 2-(7-azobenzotriazole)-N,N,N',N',-tetramethylurea hexa Fluorophosphate (HATU), react at 20°C for 12 hours;

[0065] (5) Pl...

Embodiment 2

[0068] (1) Put 50 parts of aminated graphene powder and 50 parts of carboxylated graphene powder, 1 part of polyacrylic acid and 3000 parts of ethanol in a ball mill jar, mill for 2 hours, and then ultrasonicate for 1 hour to obtain carbon material dispersion;

[0069] (2) Add 1 part of hydroxymethyl cellulose and 10 parts of dioctyl phthalate to the carbon material dispersion, and ultrasonicate for 2 hours to obtain a uniform and stable slurry;

[0070] (3) Forming, the slurry is flowed from the lower part of the hopper of the tape casting equipment to the base belt, and the blank film is formed through the relative movement of the base belt and the scraper and its thickness is controlled to 1 μm;

[0071] (4) Immerse the base film in methanol, add 5 parts of 4-dimethylaminopyridine (DMAP), and react at 30°C for 4 hours; at the same time, apply an electric field in the mixed solution with an electric field strength of 1kv / m;

[0072] (5) Place the reacted blank film in the d...

Embodiment 3

[0075] (1) Put 50 parts of aminated carbon nanotube powder and 50 parts of epoxidized carbon nanotube powder, 3 parts of phosphoric acid ester and 6000 parts of trichlorethylene in a ball mill jar, ball mill for 5 hours, and then pass Ultrasound for 0.5 hours to obtain a carbon material dispersion;

[0076] (2) Add 10 parts of styrene-acrylic latex and 1 part of diethyl oxalate into the carbon material dispersion, and ultrasonicate for 1 hour to obtain a uniform and stable slurry;

[0077] (3) Forming, the slurry is flowed from the lower part of the hopper of the tape casting equipment to the base belt, and the blank film is formed through the relative movement of the base belt and the scraper and its thickness is controlled to 100 μm;

[0078] (4) Immerse the base film in sodium carbonate and react at 50°C for 5 hours;

[0079] (5) Place the reacted blank film in the drying room to evaporate the solvent; the temperature of the drying room is divided into three sections: 50°C...

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Abstract

The invention provides a carbon material film with high electric conductivity, heat conductivity and strength and a preparing method thereof. The carbon material film is prepared according to the steps of adding functional carbon material powder and a dispersant to a solvent to be mixed and stirred; adding a binder and a plasticizer, and conducting mixing to obtain uniform and stable slurry; forming a blank film; placing the blank film in the solvent for reaction; evaporating the solvent; increasing temperature to 1000-3000 DEG C for sintering lasting 1-10 h to obtain the carbon material film. Through functional modification and then tape-casting and sintering of the surface of the carbon material, active groups between different sheets of the carbon material react with one another to form chemical bonds, and a carbon net stable structure is formed finally so that different sheets of the carbon material can be connected in the true sense. In this way, the mechanical strength, electric conductivity and heat conductivity of the carbon material film are improved greatly.

Description

technical field [0001] The invention relates to the technical field of graphite, in particular to a high-conductivity, heat-conduction and high-strength carbon material film and a preparation method thereof. Background technique [0002] With the development of society, people's requirements for materials are getting higher and higher, which makes the development of the material field change with each passing day. New carbon materials, as rookies of new materials, have excellent properties that traditional materials cannot match, such as small density, high strength, Good rigidity, high temperature resistance, chemical corrosion resistance, fatigue resistance, high electrical conductivity, high thermal conductivity, small thermal expansion, good physiological compatibility and other properties can make it the hardest diamond in the world and the softest diamond in the world. Graphite is a new material for military and civilian use, and is also known as the fourth largest ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/622
Inventor 付绪兵杨桂生
Owner HEFEI GENIUS NEW MATERIALS
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