Desiccant is suitable for preventing dampness of instruments, instruments, electrical equipment, medicines, foodstuffs, textiles and other kinds of packaging articles. Desiccant is also widely used on the sea because the goods are often damp and deteriorated due to the temperature during transportation. Agents can effectively damp moisture, so that the quality of the goods are protected.
1, desiccant for bottled drugs, food moisture. Ensure that the contents of the dry items, to prevent the growth of various kinds of fungi.
2, desiccant can be used as a general packaging desiccant, for moisture.
3, desiccant can be easily placed in various types of items (such as instrumentation, electronics, leather, shoes, clothing, food, medicines and household appliances, etc.) packaging to prevent mildew mildew items or rust.
1, acid desiccant: concentrated sulfuric acid, phosphorus pentoxide, used to dry acidic or neutral gas, which concentrated sulfuric acid can not dry hydrogen sulfide, hydrogen bromide, hydrogen iodide strongly reducing acid gas; phosphorus pentoxide Do not dry ammonia
2, neutral desiccant: anhydrous calcium chloride, the general gas can be dried, but anhydrous calcium chloride can not dry ammonia and ethanol;
3, alkaline desiccant: soda lime (mixture of CaO and NaOH, KOH), lime (CaO), NaOH solid, used to dry neutral or alkaline gas.
Medicines and health products, biological reagents, food industry-specific desiccant. Dedicated desiccant features: high hygiene requirements, FDA certification of packaging materials through the United States, the product compact and efficient, exquisite and environmentally friendly, better compatibility and chemical stability.
According to the application environment to distinguish, generally three cases:
(1) In a small environment: Desiccant placed directly in bottles, cans or other closed pouch, so that small items in the environment to keep dry.
(2) in the use of the environment: desiccant directly on the packaging of cartons (or drums, bags) used to avoid moisture in the package items.
(3) Use in a large environment: desiccant placed directly on similar warehouses, containers, in order to achieve the purpose of controlling the environment humidity.
Clay (montmorillonite) desiccant
Clay desiccant, the appearance of the shape of a small ball of gray, the most suitable below 50 ℃ moisture absorption. When the temperature is higher than 50 ℃, the degree of "water release" of the clay is greater than that of "water absorption". However, the advantage of clay is that it is cheaper.
Since montmorillonite desiccant was discovered by German Southern Chemical Company in the 1980s and used in the field of desiccant, montmorillonite desiccant has gradually become one of the mainstream mineral desiccant raw materials because of its low price.
Montmorillonite desiccant, also known as bentonite desiccant, clay desiccant.
Montmorillonite desiccant colors are: purple, gray, purple
① environmental protection: natural montmorillonite desiccant as raw material, made by dry activation, does not contain any additives and soluble, is a non-corrosive, non-toxic, pollution-free green products; can be used as a general waste Material handling, will not pollute the environment, can be naturally degraded.
② adaptability: in a variety of temperature environment, hygroscopic properties can remain stable;
③ moisture resistance: good hygroscopicity, saturated moisture absorption rate of more than 50% of its own weight, 1.5 times the traditional desiccant.