Desiccant is an important chemical substance widely used in the storage, transportation and packaging of food, medicine, industrial products and other items. Its main role is to absorb and remove moisture from the environment to keep items dry and stable. There are many kinds of desiccant materials, and different materials have different characteristics and scope of application. The following will classify the materials of desiccant.
1. Silica gel desiccant.
Silica gel is a highly reactive adsorbent material, usually in the form of transparent or translucent granules. Silica gel desiccant has a high degree of hygroscopic properties and is able to quickly absorb moisture from the surrounding environment. Silicone desiccant also has good air permeability, which keeps items dry and free from moisture. Because silica gel is non-toxic, odorless, and non-corrosive, it is widely used in food, medicine, and other packaging.
2. Calcium chloride desiccant.
Calcium chloride is a white or slightly yellowish crystalline that is highly hygroscopic. Calcium chloride desiccant releases a large amount of heat energy after absorbing water, so it is often used in items that need to be heated and dried. Calcium chloride desiccant also has the characteristics of low cost and strong hygroscopicity, so it is widely used in the industrial field.
3. Montmorillonite desiccant.
Montmorillonite is a natural clay mineral with strong adsorption capacity and ion exchange properties. Montmorillonite desiccant quickly absorbs and removes moisture, while removing odors and harmful gases. Because montmorillonite desiccant is non-toxic, tasteless and non-polluting, it is widely used in food, medicine, electronic products and other packaging.
4. Quicklime desiccant.
Quicklime is a white powdery substance that is highly hygroscopic and corrosive. Quicklime desiccant releases a large amount of heat energy after absorbing water, so it is often used in items that need to be heated and dried. Due to the characteristics of quicklime desiccant ** low cost and strong hygroscopicity, it is widely used in the industrial field. However, it should be noted that quicklime desiccant has a certain corrosiveness, and it is necessary to pay attention to safety when using it.
5. Fiber desiccant.
Fiber desiccant is a desiccant made of fibrous substance, which has strong adsorption capacity and air permeability. Fiber desiccant absorbs and removes moisture quickly while keeping items dry and stable. Because fiber desiccant is non-toxic, odorless, and non-polluting, it is widely used in food, medicine, electronic products, and other packaging.
6. Activated carbon desiccant.
Activated carbon is a carbonaceous material with a high adsorption capacity, usually in the form of black or gray granules or powders. Activated carbon desiccant absorbs and removes moisture quickly, while removing odors and harmful gases. Because activated carbon desiccant is non-toxic, tasteless and non-polluting, it is widely used in food, medicine, electronic products and other packaging.
The above is a classification introduction of desiccant materials, different materials have different characteristics and scope of application. When selecting and using desiccant, it is necessary to select according to the characteristics and environmental conditions of the item to ensure the dryness and stability of the item.