Weather-resistant graphene electricity-conduction and heat-conduction composite material and preparation method thereof

A technology of electrical and thermal conduction and composite materials, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of missing carbon atoms, low brittleness, and no graphene, so as to improve thermal stability and dispersibility, improve Stretch resistance, enhanced interfacial compatibility effect

Inactive Publication Date: 2018-12-07
LIUAN POWER SUPPLY COMPANY STATE GRID ANHUI ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nowadays, polymer material products have been applied in more and more fields. The existing materials such as electrical conduction, heat conduction, heat dissipation, and heat exchange are mostly made of metal or metal-containing materials. Most of them are not anti-oxidation, easy to Corrosion, short life, high cost and complicated preparation process and other disadvantages
At present, there are also some non-metallic conductive, heat-conducting and heat-exchanging materials, most of which are blends of polyolefin materials and graphite. The disadvantages are: low brittleness is easy to occur below minus 5 degrees, and the produced products are prone to breakage during winter transportation.
The structure of graphene is very stable. So far, researchers have not found any missing carbon atoms in graphene

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  • Weather-resistant graphene electricity-conduction and heat-conduction composite material and preparation method thereof

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Effect test

Embodiment 1

[0026] The weather-resistant graphene conductive and thermally conductive composite material in this embodiment is made of the following raw materials in parts by weight: 20 parts of modified graphene, 15 parts of modified elastomer, 10 parts of polymethyl methacrylate, 10 parts of polyimide resin, 18 parts of conductive filler, 1 part of benzoyl peroxide, 1 part of lubricant, 1 part of crosslinking agent, 1 part of antioxidant;

[0027] Wherein, the modification method of modified graphene is: adopt graphite powder as raw material, prepare graphite oxide with improved Hummers method, take 1g graphite oxide and ultrasonically disperse in 500mLN, N-dimethylformamide, obtain dispersion liquid, Add 12g of isophorone diisocyanate to the dispersion liquid, pass through nitrogen protection, react at 82°C for 25h, adjust the pH of the dispersion liquid to between 9-10 with ammonia water, then raise the temperature to 93°C, add 1.2 g hydrazine hydrate for 2 h, after the reaction, use ...

Embodiment 2

[0035] The weather-resistant graphene conductive and thermally conductive composite material in this embodiment is made of the following raw materials in parts by weight: 30 parts of modified graphene, 25 parts of modified elastomer, 15 parts of polymethyl methacrylate, 16 parts of polyimide resin, 26 parts of conductive filler, 1.5 parts of benzoyl peroxide, 3 parts of lubricant, 2 parts of crosslinking agent, 2.5 parts of antioxidant;

[0036] Wherein, the modification method of modified graphene is: adopt graphite powder as raw material, prepare graphite oxide with improved Hummers method, take 1g graphite oxide and ultrasonically disperse in 500mLN, N-dimethylformamide, obtain dispersion liquid, Add 12g of isophorone diisocyanate to the dispersion liquid, pass through nitrogen protection, react at 82°C for 25h, adjust the pH of the dispersion liquid to between 9-10 with ammonia water, then raise the temperature to 93°C, add 1.2 g hydrazine hydrate for 2 h, after the reaction...

Embodiment 3

[0044] The weather-resistant graphene conductive and thermally conductive composite material in this embodiment is made of the following raw materials in parts by weight: 25 parts of modified graphene, 20 parts of modified elastomer, 13 parts of polymethyl methacrylate, 13 parts of polyimide resin, 22 parts of conductive filler, 1.3 parts of benzoyl peroxide, 2 parts of lubricant, 1.5 parts of crosslinking agent, 1.7 parts of antioxidant;

[0045] Wherein, the modification method of modified graphene is: adopt graphite powder as raw material, prepare graphite oxide with improved Hummers method, take 1g graphite oxide and ultrasonically disperse in 500mLN, N-dimethylformamide, obtain dispersion liquid, Add 12g of isophorone diisocyanate to the dispersion liquid, pass through nitrogen protection, react at 82°C for 25h, adjust the pH of the dispersion liquid to between 9-10 with ammonia water, then raise the temperature to 93°C, add 1.2 g hydrazine hydrate for 2 h, after the reac...

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Abstract

The invention provides a weather-resistant graphene electricity-conduction and heat-conduction composite material and a preparation method thereof, relating to the technical field of high molecular materials. The composite material is prepared from the following raw materials: modified graphene, a modified elastomer, polymethyl methacrylate, thermosetting polyimide resin, a conductive filler, benzoyl peroxide, a lubricant, a cross-linking agent and an antioxidant. The composite material has good electrical conductivity property and heat conduction property, relatively good mechanical properties such as stretching resistance, tenacity and impact resistance, and good processability, is low in cost and can be widely applied to the fields of electric power grids, electronics, electric appliances, communication and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a weather-resistant graphene conductive and thermally conductive composite material and a preparation method thereof. Background technique [0002] With the continuous development of industry, polymer materials have been more and more widely used. Polyethylene, polypropylene, PTT polyester, ABS, etc. are widely used in construction, interior decoration, furniture, electric power, power grid, transportation and other industries. Nowadays, polymer material products have been applied in more and more fields. The existing materials such as electrical conduction, heat conduction, heat dissipation, and heat exchange are mostly made of metal or metal-containing materials. Most of them are not anti-oxidation, easy to Corrosion, short life, high cost and complicated preparation process. At present, there are also some non-metallic conductive, heat-conducting and heat-exchangin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/04C08L23/16C08L33/00C08L83/04C08L33/12C08L79/08C08L91/06C08K13/06C08K9/04C08K3/04C08K3/08C08K5/053C08K5/17C08K5/098C09K5/14
CPCC08K2003/0812C08K2003/0843C08K2003/085C08K2003/0862C08K2003/0893C08K2201/001C08K2201/011C08L23/16C08L25/04C08L33/00C08L83/04C08L2201/04C08L2205/035C08L2207/04C09K5/14C08L33/12C08L79/08C08L91/06C08K13/06C08K9/04C08K3/042C08K3/08C08K5/053C08K5/17C08K5/098
Inventor 刘华喜李葆马骏董军徐斌丁倩
Owner LIUAN POWER SUPPLY COMPANY STATE GRID ANHUI ELECTRIC POWER
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