Three-dimensional net-shaped high thermal conductivity graphite framework structure and manufacture method thereof

Abstract

A three-dimensional net-shaped high thermal conductivity graphite framework structure comprises at least two layers of graphite heat conduction films (12) and is characterized in that the number of connection points between every two adjacent layers of the graphite heat conduction films (12) is more than 5, and the distance between the every two connection points is more than 1mm. The thermal conductivity of the graphite heat conduction films (12) is 400-2400W / mK, and the thickness of each graphite heat conduction film (12) is 5-100 microns. The three-dimensional net-shaped high thermal conductivity graphite framework structure has very high thermal conductivity on the three-dimensional direction, and heat conduction materials have high thermal conductivity and strong mechanical strength. The requirement of fast heat conduction can be met, and the design requirement of a certain mechanical structure can be met. The three-dimensional net-shaped high thermal conductivity graphite framework structure can serve as a framework to be used with other materials in a compound mode, and whole thermal conductivity is improved.

Description

technical field [0001] The invention belongs to the field of heat-conducting materials, in particular to a graphite skeleton material with high heat-conducting performance in three-dimensional directions and a manufacturing method. Background technique [0002] With the rapid development of electronic products in recent years, smart electronic devices, such as smart phones and smart TVs, have become an inevitable trend, and in order to meet customers' higher requirements for products, more and more Features. The result will inevitably be faster and faster operating speeds of electronic devices and larger and larger battery reserves, resulting in greater heat generation and higher temperatures. High temperature will not only affect the running stability, running speed and battery capacity of the device, but also reduce the service life of the device. [0003] In the field of display and lighting, it is an irreversible trend for LEDs to replace conventional display lightin...

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Problems solved by technology

However, the high thermal conductivity of this graphite thermal conductive film is mainly reflected in the xy direction parallel to the surface, while in the vertical direction of the film material, its thermal conductivity is only 5-10 W / mK

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