A high-concentration aramid nanofiber dispersion liquid and a preparation method of aramid nanogel paper
By combining small molecule alcohol intercalation and hydrothermal fiber decomposition technology, the hydrogen bond network of aramid fibers is disrupted, enabling the preparation of high-concentration aramid nanofiber dispersions. This solves the problems of low preparation efficiency and poor performance in existing technologies, and realizes efficient and continuous production of high-performance aramid nanoaerogel paper.
CN122406583APending Publication Date: 2026-07-17XUCHANG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XUCHANG UNIV
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-17
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Figure CN122406583A_ABST
Abstract
一种高浓度芳纶纳米纤维分散液及芳纶纳米气凝胶纸的制备方法，涉及柔性气凝胶纤维领域，芳纶纳米纤维分散液的制备方法为：在极性溶剂中加入去质子化复配剂和分子插层剂，搅拌，得到混合体系Ⅰ；将芳纶短纤分散于混合体系Ⅰ中，搅拌，得到混合体系Ⅱ，水热反应后冷却至室温，即得到所述的高浓度芳纶纳米纤维分散液；其中，去质子化复配剂为碳酸氢盐和碱性物质的混合物，分子插层剂为正丙醇、异丙醇、正丁醇和叔丁醇中的任意一种或两种以上组合；水热反应的温度为80~150℃，反应时间为0.2~2h。本发明能够在缩短芳纶纳米纤维分散液制备时间的同时显著提高了分散液的固含量与均一性，为实现高性能芳纶纳米气凝胶纸的高效、连续化生产奠定了坚实的材料基础。
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