一种基于双重动态网络结构的高效界面自修复碳纤维双马来酰亚胺复合材料及其制备方法
By constructing a dual dynamic network structure at the interface of carbon fiber and bismaleimide composite materials, and utilizing the reversibility of hydrogen bonds and Diels-Alder bonds, the problem of low repair efficiency in traditional self-healing systems is solved, achieving efficient and repeated interface self-healing effects, which are suitable for aerospace and high-end equipment fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANCHANG HANGKONG UNIVERSITY
- Filing Date
- 2026-01-21
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional self-healing systems that rely on Diels-Alder bonds have low repair efficiency in highly cross-linked rigid thermosetting resin networks, making it difficult to meet the high-efficiency and rapid self-healing performance requirements of high-end equipment and other fields, and interface microcracks are difficult to repair effectively.
By constructing a dual dynamic network structure at the interface of carbon fiber and bismaleimide composite material, and utilizing the reversibility of hydrogen bonds and Diels-Alder bonds, efficient self-repair of interfacial microcracks is achieved, including steps such as surface oxidation treatment, hyperbranched polyester grafting, and curing treatment.
It achieves efficient and repeated self-healing of composite material interfaces, with an initial repair efficiency of up to 96.4% and a repair efficiency of 90.3% after multiple repairs. It has a fast repair speed and low cost, and is suitable for the long-term service requirements of aerospace and high-end equipment.
Smart Images
Figure CN121673830B_ABST