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Preparation method of a metal-based carbon fiber heating element material with high thermal conductivity

A carbon fiber heating and metal-based technology, applied in the field of metal-based carbon fiber materials, can solve problems such as poor interface performance, low surface energy, and small heating area, and achieve the effects of reducing thermal expansion coefficient, improving performance, and improving thermal conductivity.

Active Publication Date: 2022-01-18
深圳市天士力神通本草技术开发有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Due to the inert surface of carbon fiber, small specific surface area, few edge active carbon atoms, low surface energy and poor interfacial properties of other materials, the shear strength of the composite material layer is low, which restricts the further application of carbon fiber material in the field of composite materials.
At present, heat-not-burn atomizers generally use ceramic materials and metal materials as the heat-conducting shell of the heating needle. This type of material has relatively large heat loss, small heating area, and uneven temperature distribution during the heat conduction process.

Method used

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  • Preparation method of a metal-based carbon fiber heating element material with high thermal conductivity

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preparation example Construction

[0035] An embodiment of the present invention provides a method for preparing a high thermal conductivity metal-based carbon fiber heating element material, the preparation method comprising:

[0036] Preparation of carbon fiber powder with surface activity by microwave radiation ultrasonic oxidation;

[0037] Coating carbide on the surface of the carbon fiber powder by a molten salt method to prepare a coated carbon fiber powder;

[0038] The coated carbon fiber powder and the alloy powder are pressed into the shape of a heating needle by a hot pressing method to prepare a heating material.

[0039] In one embodiment, the microwave radiation ultrasonic oxidation method is specifically as follows: select carbon fibers to intrude into the oxide solution, completely disperse the carbon fibers in the solution, put the solution into a microwave oven for radiation treatment, and use ultrasonic waves to mix at the same time, and the ultrasonic oxidation is completed Afterwards, the...

Embodiment 1

[0059] (1) Carbon fiber surface treatment

[0060] First, PAN carbon fibers with a diameter of 10 μm and a length of 50 μm were completely immersed in an acetone solution, stirred and degummed for 24 hours, washed repeatedly with deionized water, and then dried in a drying oven at 120°C for 12 hours. Use deionized water to prepare a hydrogen peroxide solution with a mass fraction of 5%, and then take the degummed carbon fiber and completely immerse it in the hydrogen peroxide solution. The amount of the hydrogen peroxide solution is 30 times the mass of the carbon fiber. Mechanical stirring makes the carbon fiber completely dispersed in the solution. Put the solution into microwave heating Radiation treatment was carried out in the furnace for 30 s, and ultrasonic waves were used for mixing at the same time. After the treatment, the samples were taken out, washed with deionized water until neutral, and dried at 120°C to constant weight.

[0061] (2) Preparation of carbon fiber...

Embodiment 2

[0066] (1) Carbon fiber surface treatment

[0067] First, PAN carbon fibers with a diameter of 10 μm and a length of 50 μm were completely immersed in an acetone solution, stirred and degummed for 24 hours, washed repeatedly with deionized water, and then dried in a drying oven at 120°C for 12 hours. Use deionized water to prepare a hydrogen peroxide solution with a mass fraction of 5%, and then take the degummed carbon fiber and completely immerse it in the hydrogen peroxide solution. The amount of the hydrogen peroxide solution is 30 times the mass of the carbon fiber. Mechanical stirring makes the carbon fiber completely dispersed in the solution. Put the solution into microwave heating Radiation treatment was carried out in the furnace for 30 s, and ultrasonic waves were used for mixing at the same time. After the treatment, the samples were taken out, washed with deionized water until neutral, and dried at 120°C to constant weight.

[0068] (2) Preparation of carbon fiber...

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Abstract

The patent of the present invention provides a method for preparing a metal-based carbon fiber heating element material with high thermal conductivity, and specifically relates to the field of metal-based carbon fiber materials. The preparation method of the high thermal conductivity metal-based carbon fiber heating element material includes: preparing carbon fiber powder with surface activity by microwave radiation ultrasonic oxidation method; coating carbide on the surface of the carbon fiber powder by molten salt method to prepare coated type carbon fiber powder; the coated carbon fiber powder and alloy powder are pressed into the shape of a heating needle by a hot pressing method to prepare a heating element material. The heating element shell made of metal-based carbon fiber material can combine the high thermal conductivity of carbon fiber material and the high strength of metal material to improve the heat conduction efficiency of the heating element, and at the same time reduce the thermal expansion coefficient of the shell and improve the performance of the material.

Description

technical field [0001] The invention relates to the field of metal-based carbon fiber materials, in particular to a method for preparing a metal-based carbon fiber heating element material with high thermal conductivity. Background technique [0002] Carbon fiber refers to a fiber material that has been carbonized at a high temperature and contains more than 85% carbon, including carbon fiber and graphite fiber. As a high-performance fiber, it has high specific strength, high specific modulus, small thermal expansion coefficient, and low coefficient of friction. It has become the most important reinforcing material for composite materials in recent years because of its good low temperature resistance and other characteristics, and is widely used in aerospace and sporting goods. Due to the inert surface of carbon fiber, small specific surface area, few edge active carbon atoms, low surface energy and poor interfacial properties of other materials, the shear strength of compos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/14C22C47/04C22C49/11C22C49/14C22C101/10
CPCC22C47/14C22C47/04C22C49/11C22C49/14
Inventor 刘翔
Owner 深圳市天士力神通本草技术开发有限公司
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