Composite silica gel humidity adjusting agent

Abstract

The invention provides a composite silica gel humidity adjusting agent, wherein a silica gel is taken as a matrix, and the silica gel is compounded with inorganic salt, so that the silica gel humidity adjusting agent is prepared. The weight of the inorganic salt is 3-20% of that of the composite silica gel humidity adjusting agent. The composite silica gel humidity adjusting agent is characterized by being prepared through the following steps of: dipping the silica gel into an inorganic salt water or alcoholic solution with a certain concentration, filtering, drying, and sieving so as to obtain a plurality of white spherical grains, wherein the grain diameters of the white spherical grains are within the range from 1.0mm to 5.0mm. The composite silica gel humidity adjusting agent has the advantages that the composite silica gel humidity adjusting agent is an accurate humidity adjusting and controlling product, a reaction can be quickly preformed in the case that the humiture of an external environment is changed, and the humiture within a certain space range can be kept constant by the means that the steam is absorbed and desorbed. The wet capacity of the composite silica gel humidity adjusting agent is more than or equal to that of similar adjusting products at home and abroad; and the composite silica gel humidity adjusting agent is stable in performance under a normal temperature, easy to pack, convenient to carry, nonhazardous, lower in regeneration temperature after the composite silica gel humidity adjusting agent is used, and reusable, thereby being a product which is environmentally-friendly and energy-saving.

Description

technical field [0001] The invention relates to a humidity control material, which has a good effect especially on the control of the relative humidity of the microenvironment of cultural relics collected in museums. Composite silica gel humidity control agent can control the relative humidity of a relatively closed space with a certain volume within a certain range, and adjust the humidity by automatically absorbing and dehumidifying the humidity by sensing the change of ambient temperature and humidity, without consuming power, and can be recycled and utilized. A new type of debugging material with high precision, low carbon and environmental protection. Background technique [0002] The relative humidity of indoor air is an important parameter to measure the indoor environment. Proper humidity is of great significance to human health, indoor air quality, product production process, product quality and article protection. The national "Air Quality Standard" stipulates th...

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Problems solved by technology

[0013] Organic polymer humidity control materials are often composed of super absorbent resins with a three-dimensional cross-linked network structure, such as starch, polyacrylic acid, sodium polyacrylate, polyacrylamide, polyvinyl alcohol, acrylonitrile, etc., which have a large water absorption capacity and can Up to hundreds to thousands of times its own mass, but the moisture release performance is very poor, and the adsorbed water is difficult to desorb

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