环氧树脂类玻璃高分子研究进展

Vitrimers are a class of polymers with reversible covalent crosslinking networks. They can achieve the reconstruction of the crosslinking network while maintaining the crosslinked structure and possess the dual advantages of thermosetting polymers and thermoplastic polymers. The vitrimer materials formed based on general thermosetting resins can not only have good mechanical properties, solvent resistance, etc., but also exhibit the fluidity and repeated processing performance similar to those of thermoplastic resins, providing an effective way to realize the recycling and reuse of crosslinked resins from the source. In recent years, the research on vitrimer materials has achieved vigorous development. Among them, the research on epoxy resin vitrimers is the most extensive. This article will systematically introduce the design concept and performance characteristics of epoxy resin vitrimers, sort out the typical research systems in this field, and point out the possible development directions, providing a reference for the renewable and high-performance development of traditional thermosetting resins.

类玻璃高分子(Vitrimer)是一类具有可逆共价交联网络的高分子,其能够在维持交联结构的同时实现交联网络的重构,兼具热固性高分子和热塑性高分子的双重优势。基于通用热固性树脂形成的Vitrimer材料不仅能具有良好的力学性能和耐溶剂性等,还能表现出类似热塑性树脂的流动性和重复加工性能,为从源头上实现交联树脂的回收和再利用提供了有效的途径。近年来,围绕Vitrimer材料的研究已取得了蓬勃的发展,其中数环氧树脂Vitrimer的研究最为广泛,本文将系统介绍环氧树脂Vitrimer的设计理念及其性能特点,梳理该领域的典型研究体系,并指出可能的发展方向,为传统热固性树脂的可再生和高性能化发展提供参考。