| abstract |
The invention discloses a self-hygroscopic hydrogel, a preparation method and a thermal management method based thereon. The self-hygroscopic hydrogel is a hygroscopic hydrogel composed of a saline-resistant gel and a certain concentration of a 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 immersed in a high concentration of hygroscopic salt until the hydrogel is completely swollen, and then it is self-hygroscopic when taken out. Hydrogels. The self-hygroscopic hydrogel can absorb moisture in the air at low temperature to automatically replenish water, and at high temperature, water evaporation can take away a large amount of heat, and can realize the automatic cycle of moisture absorption and heat dissipation. The invention has the characteristics of simple structure and excellent heat dissipation capability, and can imitate the sweating heat dissipation of living things to intelligently manage heat for various objects that need heat dissipation. It can automatically dissipate heat for the heating body without external power, and has the characteristics of no noise, small size, low cost, convenience and intelligence. |