Fluorine-containing aromatic diamine monomer, preparation thereof and use thereof in polyimide films

By preparing a polycondensation reaction of a fluorinated aromatic diamine monomer and a dianhydride monomer, the problems of insufficient flexibility and processability of polyimide materials were solved, the elongation at break and mechanical properties of the film were improved, the hydrophobicity was enhanced, and the application range was expanded.

CN122404166APending Publication Date: 2026-07-17QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Filing Date
2026-04-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing polyimide materials have shortcomings in terms of flexibility and processability, which leads to increased complexity and cost in material handling and limits their application range.

Method used

A polyimide film was prepared by a three-step chemical reaction using a fluorinated aromatic diamine monomer, followed by polycondensation with a dianhydride monomer, thereby improving the material's flexibility and processability.

Benefits of technology

This improved the elongation at break and mechanical properties of polyimide films, enhanced their hydrophobicity, and expanded their application potential in integrated circuits, optical devices, packaging, and communications.

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Abstract

本发明属于高分子材料及其制备方法技术领域。具体的，本发明涉及一种含氟芳香二胺单体及其制备和在聚酰亚胺薄膜的应用。所述二胺单体具有如下分子结构：其中，m为1~4的自然数，n为0~4的自然数。本发明还提供所述二胺单体及其聚酰亚胺薄膜的制备方法。本发明含氟二胺单体合成工艺简单，反应条件温和，利于规模化生产；聚酰亚胺薄膜具有优异的力学性能、热稳定、介电特性及疏水性等，在航空航天、集成电路、新能源汽车、柔性显示、太阳能电池及胶黏剂、海洋开采、电池隔膜等领域具有重要应用。
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