Preparation process of mineral composite material capable of adjusting moisture

Abstract

The invention relates to a preparation process of a mineral composite material capable of adjusting moisture, which is characterized by comprising the following steps of: mixing sepiolite and sulfuric acid at a mass ratio of (1:10) to (1:30), and stirring with a magnetic stirrer for 6-14 hours to prepare a filter cake; crushing the filter cake, mixing the crushed filter cake with deionized water, and stirring, cleaning and filtering the mixture; placing the filter cake into an electric heating vacuum oven, and drying the filter cake at 105 DEG C to the constant weight; and placing the dried filter cake into a constant-temperature drying box or a box type resistance furnace, heating and calcinating the filter cake at 150-500 DEG C for 8 hours, taking out the filter cake, and crushing the filter cake to obtain the moisture adjusting material. By adopting the process, carbonate impurities in the sepiolite mine can be removed, and the pore volume can be increased; the structure of the sepiolite can be completely destroyed, and mineral ingredients can be recombined to form a new mineral phase, i.e. a ramp enstatite phase and a cristobalite phase; and thus the adsorption capacity and the exchange capacity can be improved.

Description

technical field [0001] The invention relates to a preparation process of a self-humidity-adjusting functional mineral composite material. Background technique [0002] Humidity has a significant impact on the environment. Appropriate relative humidity is beneficial to people's physical and mental health, protection and preservation of valuables, work and study efficiency, and improvement of product quality. Relative humidity is crucial to human production and life. The suitable environmental humidity for human survival is 40% to 70%. If the relative humidity is too high or too low, it will cause harm to many items and is not conducive to human health. In order to create and improve the appropriate environmental humidity, people use a lot of air conditioning devices such as air conditioners, humidifiers, dryers and ventilation, which not only consumes a lot of energy, but also makes energy resources more and more tense, and also pollutes the environment. Destroy the ecologic...

AI Technical Summary

Problems solved by technology

[0007] The problems of layered nano-microporous natural mineral materials as humidity control materials are small moisture absorption and desorption, unbalanced moisture absorption and desorption process, and long time to reach humidity equilibrium.

We have a lot of papers on the research on the moisture absorption performance of humidity control materials, but there are not many researches on the moisture release mechanism. The humidity control effect of the existing humidity control materials is not very ideal, and the performance needs to be improved.

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