CN204311002U - The two-sided honed conductive carbon composite of metal base - Google Patents

Abstract

Metal substrate double-sided matte conductive carbon composite material, characterized in that: the composite material consists of a first matte high-conductivity carbon nanotube layer, a high thermal conductivity metal layer and a second matte high-conductivity carbon nanotube layer from top to bottom Next, fit the composition in turn. The composite material of the utility model is convenient for processing and die-cutting, and can be attached to any plane or curved surface, and is applied to the heat generating parts of electronic products. By utilizing the characteristics of high thermal conductivity in the three directions of XYZ of the material, it can quickly gather heat on the heat source. The heat around the component spreads, and the heat changes from a point to a surface, and the heat of the component is quickly transferred to other media (air, metal, etc.) in a conductive manner to achieve cooling of the heat source component. At the same time, the composite material of the utility model has excellent shielding performance and can effectively shield the interference of electromagnetic waves. Due to the addition of conductive particles in the carbon nanotube layer, the material has excellent heat dissipation performance and also has good conduction performance to meet the different needs of customers.

Description

Metal-based double-sided matte conductive carbon composites

technical field

The utility model relates to a metal substrate double-sided matte conductive carbon composite material, which belongs to the field of adhesive product manufacture.

Background technique

With the rapid development of society, all kinds of tapes have become indispensable items in electronics, hardware, electrical appliances and other industries. It is widely used in aerospace, transportation, medical and industrial equipment, automotive, home appliances, and electronic market industries. Among them, tapes are more and more widely used in the electronics industry, and the heat generating parts of electronic products (heat is usually generated at the battery, CPU, flash module) due to the rapid heat accumulation and slow and slow heat diffusion in the horizontal direction, it is very difficult It is easy to cause high local temperature at the heat source parts, affect the service life of electronic product parts, and may even bring safety hazards, but traditional tapes cannot effectively solve this problem.

Contents of the invention

The purpose of the utility model is to provide a double-sided matte conductive carbon composite material of a metal substrate.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a metal substrate double-sided matte conductive carbon composite material, which is composed of a first matte high-conductivity carbon nanotube layer, a high thermal conductivity metal layer and a second matte high The conductive carbon nanotube layer is composed of sequential lamination from top to bottom.

The relevant content in the above-mentioned technical scheme is explained as follows:

1. In the above solution, the thickness of each of the matte high-conductivity carbon nanotube layers is 0.002 mm to 0.03 mm. The ingredients of each of the matte and highly conductive carbon nanotube layers are: water-based resin solvent, carbon nanotubes, thermally conductive fillers, thickeners, cosolvents, leveling agents and defoamers. The matte and highly conductive nano-carbon layer has a very high heat radiation rate, and has a strong heat exchange ability with the air.

2. In the above solution, the metal layer with high thermal conductivity is copper foil, and its thickness is 0.009mm-0.5mm. The high thermal conductivity metal layer has good conduction performance, excellent heat dissipation function, and also has excellent shielding performance.

3. In the above solution, the total thickness of the composite material is 0.013mm-0.56mm.

Working principle and advantages of the present utility model are as follows:

The utility model discloses a metal substrate double-sided matte conductive carbon composite material, which is composed of a first matte high-conductivity carbon nanotube layer, a high thermal conductivity metal layer and a second matte high-conductivity carbon nanotube layer. The composite material of the utility model is convenient for processing and die-cutting, and can be attached to any flat or curved surface, and is applied to the heat generating parts of electronic products. By utilizing the characteristics of high thermal conductivity in the three directions of XYZ of the material, it can quickly gather on the heat source The heat around the component spreads, and the heat changes from a point to a surface, and the heat of the component is quickly transferred to other media (air, metal, etc.) in a conductive manner to achieve cooling of the heat source component. At the same time, the composite material of the utility model has excellent shielding performance and can effectively shield the interference of electromagnetic waves. Due to the addition of conductive particles in the carbon nanotube layer, the material has excellent heat dissipation performance and also has good conduction performance to meet the different needs of customers.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model.

In the above drawings: 1. The first matte high-conductivity carbon nanotube layer; 2. The high thermal conductivity metal layer; 3. The second matte high-conductivity carbon nanotube layer.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: Referring to the accompanying drawing 1, a kind of metal substrate double-sided matte conductive carbon composite material consists of a first matte high-conductivity carbon nanotube layer 1, a high thermal conductivity metal layer 2 and a second matte high-conductivity carbon The nanotube layer 3 is formed by laminating sequentially from top to bottom.

The thickness of each of the matte highly conductive carbon nanotube layers 1 and 3 is 0.002 mm to 0.03 mm. The matte and highly conductive nano-carbon layers 1 and 3 have extremely high heat radiation rate, and have a strong heat exchange capability with air.

The high thermal conductivity metal layer 2 is copper foil with a thickness of 0.009mm-0.5mm. The high thermal conductivity metal layer 2 has good conduction performance, excellent heat dissipation function, and also has excellent shielding performance.

The total thickness of the composite material is 0.013mm-0.56mm.

The ingredients of each described matt high-conductivity carbon nanotube layer 1,3 are: water-based resin solvent, carbon nanotube, thermally conductive filler, thickener, cosolvent, leveling agent and defoamer; Its processing method comprises the following steps :

1. Take 10%-30% of water-based resin solvent; 10%-50% of carbon nanotubes, 1-150nm in diameter, 200nm-100um in length; 2%-10% of thermally conductive filler; 0.01%-5% of thickener; Solvent 0.1%~5%; leveling agent 0.01%~5%; defoamer 0.01%~2%; matting agent 0.01%~5%; the unit is parts by weight;

2. Grinding and dispersing the carbon nanotubes for 20 to 60 minutes;

3. Mix carbon nanotubes and water-based resin solvent together and stir for 30-60 minutes, then fill in thermally conductive filler, continue stirring for 20-60 minutes, and then add thickener, co-solvent, leveling agent, and defoamer in sequence , matting agent, continue to stir for 20-60 minutes, the deployment of carbon nanotube dispersion is completed; the above stirring speed is: 1000-3000 rpm;

4. After the dispersion is completed, filter it with a 200-400 mesh screen, and use it when there is no air bubble after standing still;

The processing method of the double-sided matte conductive carbon composite material of the metal substrate comprises the following steps:

1. Position the high thermal conductivity metal layer 2 first, adjust the carbon nanotube dispersion and put glue on it, scrape the carbon nanotube dispersion evenly on the high thermal conductivity metal layer 2, and then wear Electric heating oven, bake at a temperature of 40-100 degrees for 1 to 3 minutes to process into metal substrate single-sided matte conductive carbon composite;

2. The single-sided matte conductive carbon composite material of the metal base material passing through the oven is rolled into a material through rollers;

3. Process the finished product produced in step 2 according to the processing method in step 1, process the other side of the high thermal conductivity metal layer 2, and finally make a double-sided matte conductive carbon composite material of the metal substrate.

Wherein, the water-based resin solvent is any one or any combination of water-based acrylic resin, water-based alkyd resin, water-based epoxy resin, and water-based silicone resin.

The heat conducting filler is boron nitride, aluminum oxide, aluminum nitride, silicon carbide, silicon oxide, zinc oxide.

The thickness of the single-sided matte conductive carbon composite material of the metal base material is 0.011 mm to 0.53 mm.

The utility model discloses a double-sided matte conductive carbon composite material of a metal substrate, which is composed of a first matte high-conductivity carbon nanotube layer, a high thermal conductivity metal layer, and a second matte high-conductivity carbon nanotube layer. The composite material of the utility model is easy to process and die-cut, and can be attached to any flat or curved surface, and can be applied to heat generating parts of electronic products. By utilizing the characteristics of high thermal conductivity in the XYZ three directions of the material, it can quickly gather heat on the heat source. The heat around the component spreads, and the heat changes from a point to a surface, and the heat of the component is quickly transferred to other media (air, metal, etc.) in a conductive manner to achieve cooling of the heat source component. At the same time, the composite material of the utility model has excellent shielding performance and can effectively shield the interference of electromagnetic waves. Due to the addition of conductive particles in the carbon nanotube layer, the material has excellent heat dissipation performance and also has good conduction performance to meet the different needs of customers.

The utility model has XYZ three-way conduction and can be used for grounding.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (4)

1. the two-sided honed conductive carbon composite of metal base, is characterized in that: be from top to bottom sticked to form successively by the first dumb light High-conductivity carbon nanotube layer, high-thermal conductive metal layer and the second dumb light High-conductivity carbon nanotube layer.

2. the two-sided honed conductive carbon composite of metal base according to claim 1, is characterized in that: the thickness of each described dumb light High-conductivity carbon nanotube layer is 0.002mm ~ 0.03mm.

3. the two-sided honed conductive carbon composite of metal base according to claim 1, it is characterized in that: described high-thermal conductive metal layer is Copper Foil, its thickness is 0.009mm ~ 0.5mm.

4. the two-sided honed conductive carbon composite of metal base according to claim 1, is characterized in that: the total thickness of described composite wood is 0.013mm ~ 0.56mm.