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Carbon nanotube electromagnetic shielding heat dissipation film and preparation method thereof

A technology of electromagnetic shielding and carbon nanotubes, applied in the direction of magnetic field/electric field shielding, film/sheet release coating, film/sheet adhesive, etc.

Pending Publication Date: 2019-12-13
SHENZHEN XIWAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a carbon nanotube electromagnetic shielding heat dissipation film, aiming to solve the lack of a carbon nanotube film with high electromagnetic wave shielding performance, high electrical conductivity, high thermal conductivity, high flexibility and convenient application in the prior art. Tube electromagnetic shielding heat dissipation film and other technical issues

Method used

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  • Carbon nanotube electromagnetic shielding heat dissipation film and preparation method thereof
  • Carbon nanotube electromagnetic shielding heat dissipation film and preparation method thereof
  • Carbon nanotube electromagnetic shielding heat dissipation film and preparation method thereof

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preparation example Construction

[0055] The embodiment of the present invention also provides a method for preparing a carbon nanotube electromagnetic shielding heat dissipation film, comprising the following steps:

[0056] S10. Mixing the carbon nanotubes, graphene and resin in a formula amount in a solvent to obtain a mixture;

[0057] S20. Carrying out roll milling treatment on the mixture to obtain a milled product;

[0058] S30. Obtain a curing agent, add the curing agent to the grinding product and mix evenly, apply it on the base layer, and obtain an electromagnetic shielding and heat dissipation function layer on the base layer after drying;

[0059] S40. Obtain a thermally conductive adhesive, and form a thermally conductive adhesive layer on the surface of the electromagnetic shielding and heat dissipation functional layer away from the base layer to obtain a carbon nanotube electromagnetic shielding and heat dissipation film.

[0060] In the preparation method of the carbon nanotube electromagnet...

Embodiment 1

[0078] A carbon nanotube electromagnetic shielding heat dissipation film, comprising the following preparation steps:

[0079] S10. Weigh 5.0 g of 200 μm long multi-walled carbon nanotubes and 0.5 g of graphene, add them to 10 g of epoxy resin, add 5.0 g of acetone solvent, put them in a beaker, and stir them evenly by magnetic force. About 30 minutes, the naked eye looks uniform, and the carbon nanotube graphene resin mixture is obtained.

[0080] S20. Put the initially uniformly mixed carbon nanotube graphene resin mixture into a three-roll grinder, first adjust the gap between the three rolls to 30 μm and run for 5 minutes; then, adjust the gap to 0 μm and run for 10 minutes; finally, adjust the gap to 5 μm and then After running for 10 minutes, the ground product was obtained.

[0081] S30. Add 1.0 g of triethylenetetramine curing agent and 5.0 g of acetone solvent to the ground product, and defoam for 30 minutes in a vacuum state to obtain a carbon nanotube graphene resi...

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Abstract

The invention belongs to the technical field of polymer materials, in particular to a carbon nanotube electromagnetic shielding heat dissipation film, wherein the carbon nanotube electromagnetic shielding heat dissipation film comprises a matrix layer, an electromagnetic shielding heat dissipation functional layer and a heat conduction bonding layer which are sequentially stacked and arranged. According to the total mass of the electromagnetic shielding heat dissipation functional layer being 100%, the electromagnetic shielding heat dissipation functional layer comprises 10-45% of carbon nanotubes, 0-5% of graphene and the rest of resin, wherein the tube length of the carbon nanotubes is 100-500 microns. The carbon nanotube electromagnetic shielding heat dissipation film provided by the invention not only has high conductivity to electromagnetic wave shielding, but also has high conductivity, good heat dissipation performance and wide, flexible and convenient application scenarios.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a carbon nanotube electromagnetic shielding heat dissipation film and a preparation method thereof. Background technique [0002] With the continuous advancement of social science and technology, electronic technology is also developing rapidly, and electronic products play an increasingly important role in daily production and life. The higher the sensitivity of electronic components, the more susceptible they are to external electromagnetic interference. Metal-filled shielding materials such as silver, copper, and nickel are widely used at this stage. However, the performance of the silver-based conductive coating is stable, but due to its high price, it is mainly used in a special field. The resistivity of the copper-based coating is low, but the dispersion is not good due to easy sinking, and the oxidation resistance is poor. Nickel-based coatings The p...

Claims

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Application Information

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IPC IPC(8): C09J7/50C09J7/25C09D163/00C09D5/24C09D7/61H05K9/00H05K7/20
CPCC09D5/24C09D163/00C09J2463/003C09J2467/006C09J2483/00C09D7/61C09J7/25C09J7/50H05K7/2039H05K9/0081C08K3/041C08K3/042
Inventor 邓飞
Owner SHENZHEN XIWAN TECH CO LTD
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