A self-absorbing hydrogel, preparation method and thermal management method based thereon

Abstract

The invention discloses a self-absorbing hydrogel, a preparation method and a heat management method based on the self-absorbing hydrogel. The self-absorbing hydrogel is a hygroscopic hydrogel composed of a salt water-resistant gel and a certain concentration of hygroscopic salt solution. In the preparation process, the hydrogel is first prepared; then the hydrogel is heated and dried, and then the dried hydrogel is soaked in high-concentration hygroscopic salt until the hydrogel is completely swollen, and it is self-hygroscopic when taken out Hydrogels. The self-hygroscopic hydrogel can absorb moisture in the air for automatic water replenishment at low temperature, and can take away a large amount of heat when water evaporates at high temperature, and can realize the automatic cycle of moisture absorption and heat dissipation. The invention has the characteristics of simple structure and excellent heat dissipation ability, and can intelligently manage heat for various objects that need heat dissipation by imitating biological sweating and heat dissipation. It can automatically dissipate heat for the heating element without external power, and has the characteristics of no noise, small size, low cost, convenience and intelligence.

Description

technical field [0001] The invention belongs to the field of heat dissipation and relates to a heat dissipation technology, in particular to a self-hygroscopic hydrogel, a preparation method and a heat management method based thereon. Background technique [0002] When almost all electronic light-emitting, computing and energy conversion devices are in use, most of the energy is converted into heat energy. If the heat cannot be dissipated in time, the temperature of the device will increase. High temperature will affect the performance of the device, such as affecting the service life of the diode, reducing the stability and reliability of the chip, reducing the energy conversion efficiency of the solar cell, and so on. Moreover, driven by Moore's Law and the integrated circuit industry, electronic equipment is developing towards integration and miniaturization. Therefore, the problem of heat treatment has even become a key factor for the normal operation of the equipment. ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of heat dissipation of various heating elements and the problem that the current hydrogel cannot realize automatic water replenishment, the present invention provides a thermal management system based on self-absorbing hydrogel and its preparation method, which has adjustable volume, Features of zero noise, low cost, intelligence and wide range of applications

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