Moisture-regulating materials are materials with the function of automatically adjusting air humidity. Due to their superior performance, they are widely used in human production and life.
The use of moisture-regulating materials not only reduces energy consumption but also improves the human living environment, playing an indispensable role in the sustainable and healthy development of society.
With the increasing demand from humans, moisture-regulating materials are constantly being improved and developed.
The Moisture Regulation Principle of Moisture-Regulating Materials
Regardless of the differences in types, the moisture regulation process of moisture-regulating materials is the same. It is completed by the material itself without any mechanical equipment, relying on its unique sensing ability to adjust the air humidity of the surrounding space through absorption and desorption characteristics.
The moisture regulation principle of moisture-regulating materials is not complicated. When the surrounding environmental humidity is high, Moisture-Regulating Materials it will lower the temperature by adsorbing water vapor. When the surrounding environmental humidity is low, the moisture-regulating material will release the previously absorbed moisture, thereby humidifying the air and raising the surrounding humidity. Moisture-regulating materials regulate humidity through this working principle to achieve relatively constant spatial humidity. The moisture regulation principle of moisture-regulating materials is mainly divided into physical adsorption and chemical adsorption. Inorganic materials mainly use chemical adsorption, using the principle of chemical hygroscopy for single-molecular layer adsorption, which is more stable. Organic materials rely on physical adsorption, with high-polarity organic molecular materials having strong adsorption and low-polarity materials having weak adsorption.
Types of Moisture-Regulating Materials
According to research results, moisture-regulating materials can be divided into five categories:
The first category is silica gel. Although it has a moisture-regulating function, it is not often used in moisture regulation because it often lags in the adsorption and circulation of water;
The second category is inorganic salts. During the process of adsorbing water, it will deliquesce by itself, affecting the items in the space, so its use is also subject to certain limitations;
The third category is inorganic mineral materials, which mainly include diatomaceous earth, montmorillonite, and bentonite. These materials are not only low in cost but also have a strong ability to adsorb water. They can be made into various shapes with simple processing, making them the most commonly used moisture-regulating material for humans.
The fourth category is organic polymer materials, such as polyacrylic acid and polyvinyl alcohol. Although their adsorption is good, they are difficult to dehydrate.
The fifth category is composite Moisture-Regulating Materials materials, which have been gradually developed in recent years. This involves combining different types of materials to achieve a moisture-regulating effect. 
