玻璃态聚合物及其制备方法、成型件及其制备方法
Glassy polymers designed with hyperbranched topology and high-density dynamic bond network have solved the problems of self-healing and high-temperature processing of traditional glassy polymers, achieving self-healing and low-energy molding at room temperature, and are applicable to a variety of material fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XICHANG COLLEGE
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional glassy polymers freeze their chain segment movement below the glass transition temperature, making it impossible for the material to repair itself once cracks or damage occur. Furthermore, processing and molding require high temperatures, resulting in high energy consumption and violating the requirements of green and low-carbon manufacturing.
By employing a hyperbranched topology and a high-density dual dynamic bond network design, a hyperbranched prepolymer is formed through the Michael addition of N,N-methylenebisacrylamide and ethylenediamine. Diselement bonds are then synthesized by combining 3-bromopropane and selenium powder, resulting in a glassy polymer with excellent room-temperature dynamics. Self-repair is achieved by utilizing the high mobility of the branches and the dissociation and recombination of the dynamic bonds.
The prepared glassy polymer exhibits excellent mechanical properties and self-healing ability at room temperature, requires no external stimulation, and maintains stable mechanical properties after multiple processing, making it suitable for flexible electronic devices, transparent protective materials, and engineering structural components.
Smart Images
Figure CN121086227B_ABST