Method of preparing heat interfacial material

Abstract

The invention discloses a making method of heat boundary material, which comprises the following steps: (1) providing certain quantity of carbon nanometer pipe and liquid substrate material; (2) balling the carbon nanometer pipe over 4h; obtaining the balled carbon nanometer pipe with even length at 600-2000nm and at least one end opened; (3) blending the balled carbon nanometer pipe and liquid substrate material to form solid; obtaining the product.

Description

technical field [0001] The invention relates to a method for preparing a thermal interface material, in particular to a method for preparing a thermal interface material containing carbon nanotubes. Background technique [0002] In recent years, with the rapid development of the integration process of semiconductor devices, the degree of integration of semiconductor devices has become higher and higher, while the volume of devices has become smaller and smaller, and its heat dissipation has become an increasingly important issue. The requirements are also getting higher and higher. In order to meet these needs, various heat dissipation methods have been widely used, such as fan heat dissipation, water cooling auxiliary heat dissipation and heat pipe heat dissipation, etc., and a certain heat dissipation effect has been achieved. However, due to the uneven contact interface between the heat sink and the semiconductor integrated device, Generally, less than 2% of the area is ...

AI Technical Summary

Problems solved by technology

However, the thermal conductivity of thermal interface materials containing carbon nanotubes provided in the prior art still has a certain gap with the expected effect.

The reason is that the carbon nanotubes used to prepare the above-mentioned thermal interface materials have a large length during the growth process and are prone to intertwining or self-twisting, so the characteristics of high longitudinal thermal conductivity of carbon nanotubes cannot be fully utilized.

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