Gas deep dehumidification film and preparation method thereof

Abstract

The invention provides a gas deep dehumidification film and a preparation method thereof, the gas deep dehumidification film is mainly composed of a modified porous skeleton and a water removal function resin compound, the modified porous skeleton plays a supporting and reinforcing role in the whole film, high mechanical property of the dehumidification film is guaranteed, and the moisture removal function is improved. The resin compound with the water removal function plays a role in deeply removing water molecules, it is guaranteed that the water molecules move in the film in the single direction, and the mass ratio of the modified porous framework in the dehumidification film is 5%-90%. The functional resin compound capable of selectively removing water molecules is filled in the porous framework and on the surface of the porous framework through a coating technology, the deep dehumidification film which is high in water permeability and unique in selectivity is prepared, and the deep dehumidification film is excellent in temperature resistance, pollution resistance and corrosion resistance and can be applied to various conventional or harsh use environments. The prepared dehumidification film material is good in economical efficiency, the preparation method is simple, and large-scale production is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of gas separation membranes, and relates to a deep gas dehumidification membrane and a preparation method thereof. Background technique [0002] In the production and use of precision instruments, medicine, food and electronic equipment, etc., there are strict requirements on the moisture content in the air. Excessive air humidity will cause metal rust, decrease the accuracy of instruments, and reduce insulation parameters. Controlling humidity is critical for development. It is of great significance to improve production technology, guarantee production process and improve product quality. [0003] Commonly used dehumidification methods include cooling method, adsorbent method, and wheel method, but there are disadvantages such as low dehumidification efficiency, complicated equipment, and secondary pollution. Membrane dehumidification is a potential technology, and the design and development of high-perfo...

AI Technical Summary

Problems solved by technology

However, the main material of the drying tube is expensive perfluorosulfonic acid resin, the material price of the drying tube is relatively high, and the mechanical strength of the drying tube is low, so it is easy to be damaged during installation and use.

At the same time, the preparation process of this type of drying tube is mainly melt drawing technology, which requires relatively complex equipment and precise parameter control

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