Desiccant preparation method and desiccant

Abstract

The invention discloses a desiccant preparation method and a desiccant. The desiccant is mainly composed of super absorbent resin, magnesium chloride and / or a stabilizer, and the desiccant comprises the following components in parts by weight: 10-90 parts of super absorbent resin, 5-90 parts of anhydrous magnesium chloride with high magnesium chloride content and / or magnesium chloride with N crystal water and / or calcium chloride, and / or 0.1-5.0 parts of a stabilizer. The desiccant can be obtained by stirring and mixing. The prepared desiccant is excellent in moisture absorption capability, is a colloid which is not easy to flow after absorbing moisture, is small in volume increase change, and is environment-friendly, non-toxic, good in stability and convenient to prepare. The desiccant is very good in universality and is particularly suitable being placed an occasion with a limited desiccant space and needing high moisture absorption capacity to prevent a camera lens from fogging in the security industry.

Description

technical field [0001] The invention relates to a preparation method of a desiccant and the desiccant. Background technique [0002] The desiccant came into being in order to avoid the occurrence of defective products caused by excess moisture. The types of desiccants are divided into physical adsorption desiccants and chemical adsorption desiccants according to their drying principles. Physical adsorption desiccants include silica gel, alumina, molecular sieves, charcoal, mineral desiccants, activated clay, etc. Its drying principle is to physically adsorb water molecules in its own structure. Use the desiccant to absorb the moisture in the bagged items, keep the items relatively dry for a long time, regulate the moisture conditions of microbial survival, chemical reactions, photolysis reactions and enzymatic reactions, so as to achieve moisture-proof, mildew-proof, insect-proof and rust-proof , anti-oxidation to extend the shelf life of products, this effective measure h...

AI Technical Summary

Problems solved by technology

The disadvantage of this patent is that the desiccant raw material super absorbent resin and soluble salt plant polysaccharides used in this technology absorb water through the principle of physical adsorption. Not only the water absorption capacity is limited, but also when the ambient humidity is low Parts will also be released, affecting the drying effect

At the same time, the Chinese patent application number is CN 108927115 A, which discloses a military anti-mildew and anti-oxidation highly hygroscopic desiccant and its preparation method, comprising the following components in parts by weight: montmorillonite 20-30 parts; attapulgite 20 parts -30 parts; 5-10 parts of microsphere silica gel; 3-5 parts of lemon peel powder; 0.5-1 part of chitosan; 5-8 parts of pomelo peel powder; 10-15 parts of calcium chloride; sodium carboxymethylcellulose 5-8 parts; the desiccant shortcoming of above-mentioned invention is that though adopting microsphere silica gel, montmorillonite, attapulgite, chitosan, sodium carboxymethyl cellulose to be physical adsorption raw material and calcium chloride to be the raw material mixing of chemical adsorption However, due to the combination of calcium chloride and two crystal waters, the water absorption capacity is not particularly strong, and the production process is complicated, so it is not suitable for large-scale production and promotion.

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