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High-thermal-conductivity carbon fiber composite material with laminated hybrid structure and preparation method of high-thermal-conductivity carbon fiber composite material

A composite material, laminated structure technology, applied in the direction of carbon fiber, heat exchange materials, fiber processing, etc., can solve the limited improvement of the thermal conductivity of composite materials, the limited improvement of thermal conductivity of composite materials, and the interlaminar shear strength of carbon fiber composite materials. Rapid decline and other problems, to achieve the effect of improving thermal conductivity and mechanical properties, reducing thermal resistance in space, and efficient transmission

Active Publication Date: 2021-03-12
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of this method at present is that when the coating thickness is low, the improvement of the thermal conductivity of the composite material is extremely limited; and when the coating is thick, it is difficult for the resin to infiltrate into the coating, which will make the carbon fiber composite material The interlayer shear strength of the coating decreases rapidly, and the improvement of the thermal conductivity of the composite is still extremely limited due to the large space thermal resistance between the coating layers.

Method used

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  • High-thermal-conductivity carbon fiber composite material with laminated hybrid structure and preparation method of high-thermal-conductivity carbon fiber composite material
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Examples

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Effect test

Embodiment 1

[0034] In this example, the specific preparation parameters of the carbon fiber composite material with laminated hybrid structure are:

[0035] The carbon fiber is made of T700 orthogonal cloth in the form of fabric, the thickness of each layer of carbon fiber cloth is 0.6mm, the diameter of carbon fiber is 7μm, the number of monofilaments of carbon fiber tow is 12K, and the density is 1.8g / cm 3 .

[0036] The gas used to excite the plasma in the plasma treatment is air, and the plasma treatment time is 15 minutes.

[0037] The copper-containing material is made of spherical pure copper powder with a particle size of 500nm and a specific surface area of ​​20m 2 / g, bulk density is 2.3g / cm 3 .

[0038] Graphene is selected from graphene nanosheets prepared by oxidation-reduction method, the number of layers is 5 layers, the sheet diameter is 10 μm, and the thickness is 2 nm.

[0039] The spraying method is blended spraying, in which: the concentration of the copper-contain...

Embodiment 2

[0043] The difference from Example 1 is that in this example, the specific preparation parameters of the carbon fiber composite material with laminated hybrid structure are:

[0044] The carbon fiber is made of T700 orthogonal cloth in the form of fabric, the thickness of each layer of carbon fiber cloth is 0.6mm, the diameter of carbon fiber is 7μm, the number of monofilaments of carbon fiber tow is 12K, and the density is 1.8g / cm 3 .

[0045] The gas used to excite the plasma in the plasma treatment is air, and the plasma treatment time is 15 minutes.

[0046] The copper-containing material is flaky pure copper powder, with a diameter of 50 μm, a thickness of 4 nm, and a specific surface area of ​​5 m 2 / g, the bulk density is 2.5g / cm 3 .

[0047] Graphene is selected from graphene spheres prepared by a spray-drying method, and the particle size is 30 μm.

[0048] The spraying method is alternate spraying, wherein: the concentration of the copper-containing solution is 3...

Embodiment 3

[0052] The difference from Example 1 is that in this example, the specific preparation parameters of the carbon fiber composite material with laminated hybrid structure are:

[0053] The carbon fiber is made of T800 orthogonal cloth in the form of prepreg, the thickness of each layer of prepreg is 0.4mm, the diameter of carbon fiber is 7μm, the number of monofilaments of carbon fiber tow is 6K, and the density is 1.8g / cm 3 .

[0054] The gas used to excite the plasma in the plasma treatment is oxygen with a volume purity of 99.999%, and the plasma treatment time is 30 minutes.

[0055] The copper-containing material is made of spherical pure copper powder, with a particle size of 20 μm and a specific surface area of ​​6m 2 / g, bulk density is 2.4g / cm 3 .

[0056] Graphene is a graphene sheet prepared by the catalytic intercalation expansion exfoliation method, with 6 layers, a sheet diameter of 50 μm, and a thickness of 2.5 nm.

[0057] The spraying method is blended spray...

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Abstract

The invention relates to the field of structural / functional composite materials, and particularly relates to a high-thermal-conductivity carbon fiber composite material with a laminated hybrid structure and a preparation method of the high-thermal-conductivity carbon fiber composite material. The preparation method comprises the steps of spraying a graphene solution and a copper-containing solution on the surface of a carbon fiber cloth layer serving as a main body, constructing a sheet filler heat conduction network parallel to the carbon fiber cloth layer in the horizontal direction, constructing a micro-nano-scale sheet ball laminated structure on the surface of the carbon fiber cloth layer in the vertical direction, and then laying the carbon fiber cloth layer, injecting a polymer matrix material into the carbon fiber cloth layer, and finally obtaining the high-thermal-conductivity carbon fiber composite material with the laminated hybrid structure. The introduction of the laminated hybrid structure can significantly improve the in-plane / out-plane thermal conductivity of the composite material, and the composite material has high thermal conductivity and high mechanical properties. In addition, the laminated hybrid structure of the sheet clamping balls is more beneficial to resin infiltration, and the mechanical property of the composite material can be effectively improved.

Description

technical field [0001] The invention relates to the field of structural / functional composite materials, in particular to a high thermal conductivity carbon fiber composite material with a laminated hybrid structure and a preparation method thereof. Background technique [0002] Continuous carbon fiber reinforced polymer matrix composites have many advantages such as light weight, high strength, low thermal expansion coefficient, and simple preparation process. They are usually used as structural materials and are widely used in aerospace, automotive, electronics and other fields. With the rapid development of aerospace, automobile, electronics and other fields in recent years, its internal devices are gradually becoming highly integrated and high-power, which inevitably generates more and more heat, which seriously affects the service life of the product. As a structural material, traditional carbon fiber reinforced polymer matrix composites are difficult to meet the use req...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/00C08K9/02C08K7/06C08K7/18C08K7/00C08K3/04B32B9/00B32B9/04B32B33/00B32B37/00B32B38/00D06M10/02D06M11/74D06M11/83B29C70/02B29C70/88C09K5/14D06M101/40
CPCC08K9/00C08K9/02C08K7/06C08K7/18C08K7/00C08K3/042C08K3/08B32B5/26B32B33/00B32B37/00B32B38/0008D06M10/025D06M11/74D06M11/83B29C70/02B29C70/021B29C70/88C09K5/14B32B2262/106B32B2255/02B32B2307/302B32B2307/54B32B2307/546D06M2101/40C08K2003/085C08L63/00
Inventor 王函孙新阳张建岗马超群鲁妮曾尤任文才刘畅成会明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI