At present, there are five typical desiccant products in the desiccant industry:
1) Silica gel desiccant-the main component is silica, which is refined or processed into granules or beads by natural minerals. As a desiccant, its microporous structure (average 2A.) Has good affinity for water molecules. The suitable hygroscopic environment of silicone is room temperature (20 ~ 32) and high humidity (60 ~ 90%), which can reduce the relative humidity of the environment to about 40%.
2) Clay desiccant (montmorillonite)-The appearance shape is small gray balls, which is more suitable for absorbing moisture in the environment below 50 ℃. When the temperature is higher than 50 ° C, the degree of "water release" of the clay is greater than the degree of "water absorption". But the advantage of clay is that it is cheap.
3) Molecular sieve desiccant-it is a synthetic desiccant product with strong adsorption to water molecules. The pore size of the molecular sieve can be controlled by different processing techniques. In addition to adsorbing water vapor, it can also adsorb other gases. Under the high temperature above 230 ℃, it can still hold water molecules well. Advantages: strong adaptability. Disadvantages: low moisture absorption rate, poor environmental protection (non-degradable).
4—Hengyuan mineral desiccant is composed of several natural minerals, and the appearance is grayish white balls. It is non-toxic and harmless, and is a degradable and environmentally friendly desiccant. The moisture absorption rate is more than 50%, which is twice that of ordinary silica gel.
5) Fiber desiccant-Hengyuan fiber desiccant is made from pure natural plant fibers through special process. Among them, the film-coated fiber desiccant sheet is convenient and practical and does not occupy space. Its hygroscopic capacity reaches 100% of its own weight, which is unmatched by ordinary desiccant. In addition, the product is safe and hygienic, and the price is moderate. It is an ideal choice for many biological, health food and medicine.