一种基于偶氮苯硼酸的光响应多功能聚氨酯材料及其制备方法
By introducing an azobenzeneboronic acid structure into polyurethane materials and utilizing the photo-induced isomerization effect of azobenzene, the problems of strength and single function of existing photoresponsive self-healing materials have been solved, achieving efficient photoresponsive self-healing and multiple environmental responses, thus expanding the application potential.
CN122167703BActive Publication Date: 2026-07-17SOUTHWEST PETROLEUM UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST PETROLEUM UNIV
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing photoresponsive self-healing materials have low mechanical strength and limited functionality, making it difficult to meet the needs of complex applications.
Method used
By introducing an azobenzeneboronic acid structure into polyurethane materials and utilizing the photoinduced reversible isomerization effect of azobenzene, precise control of the dynamic covalent bonds of boron-oxygen hexacyclic rings can be achieved, endowing the materials with photoresponsive self-healing properties and multiple response functions.
Benefits of technology
It achieves high-intensity light-responsive self-healing performance, and also has multiple functions such as light-induced color change and humidity response, thus expanding the application range of the material.
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Abstract
本发明公开了一种基于偶氮苯硼酸的光响应多功能聚氨酯材料及其制备方法，属于光响应自修复材料技术领域。该材料通过含偶氮苯硼酸结构的单醇封端聚氨酯制得，具体由二异氰酸酯、长链二醇、丁二醇、三羟甲基丙烷及含偶氮苯硼酸结构的单醇在N,N‑二甲基甲酰胺中70℃反应3 h制备。本发明通过将偶氮苯硼酸结构引入聚氨酯体系，利用偶氮苯的光致可逆异构化效应，实现了对硼氧六环动态共价键断裂与重组的精准调控。该设计赋予了材料优异的光照自修复性能，在365 nm与450 nm光照下自修复效率可达96.9%。同时，材料还具备光响应变色和湿度响应变形特性，在智能高分子领域具有广阔的应用前景。
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