环氧树脂类玻璃高分子研究进展

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。

Research Progress in Epoxy Vitrimer

Vitrimer is a new kind of polymer based on covalent reversible cross-linking networks which can be reconstructed while maintain the cross-linked structures, thus the vitrimer materials possesses the advantages of both thermosetting polymers and thermoplastic polymers. Vitrimer materials based on the commonly used thermosets can not only exhibit excellent mechanical property and solvent resistance, but also can be flowable and re-processable like thermoplastics, which will provide an effective way for the recycle of cross-linked polymers from the source. The research on vitrimer has been growing fast in recent years, where epoxy resin was mostly and widely investigated. This review paper focuses on the design concept and characteristics of epoxy vitrimer, by systematically summarizing and analyzing the typical research at present stage, in order to elucidate the direction and challenge for epoxy vitrimer, and provide references for the development of high performance recyclable resins.