Method for preparing nanotube and PCM combined phase change temperature control component

Abstract

The invention provides a method for preparing carbon nanotube and PCM-combined phase change temperature control component, which aims to provide a method for preparing a phase change temperature control component with high phase change latent heat and better heat conduction effect. The present invention is implemented as follows: casting pyrolytic graphite in the heat sink bottom and the verticalhot wall surface of a metal conductor packaging container; combining carbon nanotubes and phase change materials by ultrasonic vibration to form a carbon nanotube and phase change composite material,and charging the liquid carbon nanotube and phase change composite material in a heat conductive reinforcing skeleton by a vacuum co-fusion method; welding the heat conductive reinforcing skeleton ina phase change cavity to form a multilayer phase change latent heat self-control adjustment level that the pyrolytic graphite wrapping, in a U-shape, heat conductive reinforcing skeleton, and forminga thermal insulation buffer layer from the phase change cavity; and finally, welding a cover plate on the stepped opening of the metal conductor packaging container by electron beam welding, enclosingto form a closed phase change temperature control component, and processing to obtain the boundary dimension according to requirements.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube composite material phase change temperature control component based on a heat conduction enhanced framework in the field of thermal control of electronic devices. Background technique [0002] With the rapid development of electronic equipment towards the direction of miniaturization and high integration, the unique properties of phase change temperature control make it widely used and developed rapidly in the temperature control of intermittent or periodic operation of electronic equipment. [0003] The principle of phase change temperature control technology is to use phase change material (Phase Change Material, PCM) to absorb a large amount of heat when changing from a low-entropy aggregate state to a high-entropy aggregate state substance at a certain temperature, and the temperature is basically maintained during the transformation process. Invariant properties, and then adjust an...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a carbon nanotube composite PCM combined phase change temperature control system with higher thermal response rate, shorter thermal response time, large phase change latent heat and better heat conduction effect for the deficiencies of the existing phase change temperature control components. The preparation method of the control component to further improve the thermal response rate of the existing phase change temperature control component

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