Self-polymerized microporous polymer hollow fiber ultrafiltration membrane as well as preparation method and application thereof

By adopting the preparation method of self-porous microporous polymer hollow fiber ultrafiltration membrane, the problems of low efficiency and unstable performance in traditional ultrafiltration membrane production methods are solved, and efficient and environmentally friendly ultrafiltration membrane production is achieved, which is suitable for a variety of application fields.

CN120155071AActive Publication Date: 2025-06-17北京诺滤新材料科技有限公司 +1
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Patent Information

Application Number
CN202510424699.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-07
Publication Date
2025-06-17
Estimated Expiration
2045-04-07

AI Technical Summary

Technical Problem

The traditional ultramicrofilter membrane production methods have problems such as low production efficiency, unstable membrane performance, serious membrane pollution and environmental pollution, which limits its further development in actual applications.

Method used

The self-porous microporous polymer hollow fiber ultrafiltration membrane is prepared by mixing the self-porous microporous polymer, a plasticizer and an organic solvent to form a spinning liquid, and wet spin with the core liquid to obtain a stable ultrafiltration membrane.

Benefits of technology

The production efficiency of ultrafiltration membranes is improved, and the ultrafiltration membrane with stable performance is obtained, and it is highly environmentally friendly. It is suitable for large-scale production and widely used in water treatment, food separation and medicine fields.

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Abstract

The invention provides a self-polymerized microporous polymer hollow fiber ultrafiltration membrane as well as a preparation method and application thereof, and belongs to the technical field of ultrafiltration membranes. The preparation method comprises the following steps: mixing a self-polymerized microporous polymer (PIM), a plasticizer and an organic solvent to obtain a spinning solution, and carrying out wet spinning on the spinning solution in one step to obtain the hollow fiber ultrafiltration membrane. According to the invention, a self-polymerized microporous polymer (PIM) is added in the spinning process, and the PIM material realizes molecular-level self-assembly through dynamic covalent bonds (such as imine bonds and borate bonds) to form a pore channel continuous network structure, so that the performance of the ultrafiltration membrane is improved. The hollow fiber ultrafiltration membrane prepared from the self-polymerization microporous polymer with the specific structure has good hydrophilic performance, the permeability coefficient of the ultrafiltration membrane is 100 Lm <-2 > h <-1 > or above, efficient filtration can be achieved at low pressure, and energy consumption is reduced.
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