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Method for preparing longitudinal high-thermal-conductivity gasket by orienting carbon fibers through controllable compression deformation method

A compression deformation and carbon fiber technology, applied in the field of silica gel sheets, can solve problems such as low production efficiency, waste of raw materials, limited height, etc., and achieve the effects of reducing waste, improving production efficiency, and cutting methods are efficient and simple

Active Publication Date: 2021-01-29
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the stacking height of the fibers, the fibers at the bottom will be crushed under the action of gravity, so the height of the sample is limited, so that the size of the gasket after cutting is small, and the carbon fiber gasket with limited size can only be 50mmX50mm at most, resulting in Low production efficiency and waste of raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing longitudinal high thermal conductivity gaskets from oriented carbon fibers by a controllable compression deformation method, specifically comprising the following steps:

[0034] S1: 120g of carbon fiber, 270g of 500cs vinyl silicone oil, 10g of hydrogen-containing silicone oil (purchased from Guangzhou Jinsige, with a hydrogen content of 0.1%), 1000g of spherical alumina, 5g of platinum-gold catalyst complex, and acetylene inhibitor Cyclohexanol 0.1g is mixed uniformly to obtain a thixotropic initial slurry;

[0035] S2: Pour the initial slurry into the mold (the aspect ratio of the mold is 5:1), the inner surface of the mold is polished and coated with a release agent fluororesin coating, the initial slurry is compacted, and the mold is heated at 80°C Heat for 10 minutes to make the deformed and oriented slurry reach a semi-cured state, remove the mold, and prepare the first layer of slurry; the thickness of the first layer of slurry is 1 cm;

...

Embodiment 2

[0041] The difference between embodiment 2 and embodiment 1 is that the aspect ratio of the mold is 10:1, and the thermal conductivity of the gasket after orientation cutting is 12.2W / mK.

Embodiment 3

[0043] The difference between embodiment 3 and embodiment 1 is that the aspect ratio of the mold is 15:1, and the thermal conductivity of the gasket after orientation cutting is 15.8 W / mK.

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Abstract

The invention provides a method for preparing a longitudinal high-thermal-conductivity gasket by orienting carbon fibers through a controllable compression deformation method, which is characterized in that the carbon fibers are orientated and arranged through the controllable compression deformation method, and the carbon fiber silica gel gasket with the thermal conductivity of 30W / mK in the thickness direction is prepared through the subsequent processes of defoaming, vulcanizing, cutting, surface treatment and the like. The carbon fiber gasket with the length-width ratio of 20: 1 can be prepared, the production efficiency is improved, and meanwhile waste materials are reduced.

Description

technical field [0001] The invention belongs to the field of silica gel sheets, and more specifically relates to a method for preparing longitudinal high thermal conductivity gaskets from oriented carbon fibers by a controllable compression deformation method. Background technique [0002] 5G is currently a leading mobile communication technology and a key infrastructure to promote the rapid development of the real economy. It has been regarded as a national strategy by various countries and has become a game between countries, leading technological innovation, entering the digital age, and realizing industrial upgrading. sexual technology. However, while the 5G network provides efficient and stable data interaction for the terminal, it also poses an extremely severe test to the thermal management technology. [0003] In addition, while the ultra-high data throughput of 5G brings powerful functions, it will also lead to a further increase in power consumption and heat gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/32
CPCC04B26/32C04B2201/32C04B14/386C04B14/303C04B24/02C04B40/0259C04B40/0272C04B2103/0068
Inventor 祝渊迟克禹唐正阳
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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