An anf microgel material, its preparation method and use

By preparing ANF microgel materials, the problem of ANF fibers not being able to effectively penetrate into paper or polymer matrices was solved by using polymerization-induced self-assembly, in-situ protonation, and high-speed shearing methods, thereby improving the mechanical properties of the materials, especially tensile strength and elongation at break.

CN122277983APending Publication Date: 2026-06-26SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Filing Date
2026-04-27
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

ANF ​​fibers cannot effectively penetrate and distribute between matrix fibers in different layers of paper or polymer matrix, resulting in their reinforcement effect not being fully utilized and reducing the mechanical properties of the material.

Method used

ANF ​​microgel materials were prepared using polymerization-induced self-assembly, in-situ protonation, and high-speed shearing methods. The three-dimensional nanoscale porous structure and high dispersion stability improved the adhesion of fibers in the Z-axis direction, thereby enhancing the density and fiber bonding of the material.

Benefits of technology

It effectively improves the mechanical properties of para-aramid paper, especially tensile strength and elongation at break, meeting the needs of high-end specialty paper and high-strength composite materials.

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Abstract

This invention belongs to the field of aramid fiber materials and discloses an ANF microgel material, its preparation method, and its application. The method includes: adding terephthaloyl chloride, p-phenylenediamine, and triaminobenzene to an amide solvent to obtain a monomer mixed solution; adding a template agent to the monomer mixed solution under a protective atmosphere to carry out a condensation polymerization reaction to obtain an ANF dispersion; protonating the ANF dispersion using an in-situ protonation method and then performing in-situ displacement to obtain an ANF hydrogel with a three-dimensional nanoscale porous structure; mixing the ANF hydrogel with the three-dimensional nanoscale porous structure with deionized water and subjecting it to high-speed shearing to obtain the ANF microgel material. The ANF microgel material prepared by this invention using polymerization-induced self-assembly, in-situ protonation, and high-speed shearing exhibits high dispersion stability and porosity, and can be used as a reinforcing filler to strengthen the mechanical properties of para-aramid paper, effectively improving the mechanical properties of para-aramid paper.
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