Compared with thermoplastic polymers, thermoset polymers are difficult to recycle because they can not be remolded once cured and often do not decompose under mild conditions. Thermosets designed to be degradable afford a useful route to obtain thermoset recyclability and enable the recycling of valuable components that may be encapsulated in thermoset materials. In this review, the need for degradable thermosets as well as a summary of research progress is presented. Degradable thermosets are divided into different categories based on the different labile bonds or linkages studied such as esters, sulfur containing linkages (disulfide, sulfonate, 5-membered cyclic dithiocarbonate, trithiocarbonate, sulfite), nitrogen containing structures (acylhydrazone, alkoxyamine, azlactones, Schiff base, hindered ureas, aminal, carbamate), orthoester structures, carbonates, acetals, hemiacetals, olefinic bonds, D-A addition structures, vicinal tricarbonyl structures, peroxide bonds, phosphorus containing structures, tertiary ether bonds, and so on. The synthetic route, recycling methods, degradation mechanisms and progress in research of each approach to degradable thermosets is described. The efforts of the applicability of some degradable thermosets are also summarized. Finally, conclusions and trends of future work are highlighted.

与热塑性聚合物相比，热固性聚合物难以回收，因为它们一旦固化就无法重塑，并且通常不会在温和的条件下分解。设计为可降解的热固性塑料为获得热固性可回收性提供了一条有用的途径，并且可以回收可封装在热固性材料中的有价值的组件。在这篇综述中，提出了对可降解热固性塑料的需求以及研究进展的总结。可降解的热固性树脂根据所研究的不同不稳定键或连接基分为不同类别，例如酯，含硫键（二硫键，磺酸盐，五元环二硫代碳酸酯，三硫代碳酸酯，亚硫酸盐），含氮结构（酰基hydr，烷氧基胺、,内酯，席夫碱）碱，受阻尿素，氨基，氨基甲酸酯），原酸酯结构，碳酸盐，乙缩醛，半缩醛，烯烃键，DA加成结构，邻三羰基结构，过氧化物键，含磷结构，叔醚键等。描述了可降解热固性塑料的合成路线，回收方法，降解机理以及每种方法的研究进展。还总结了一些可降解热固性塑料的适用性。最后，重点介绍了未来工作的结论和趋势。还总结了一些可降解热固性塑料的适用性。最后，重点介绍了未来工作的结论和趋势。还总结了一些可降解热固性塑料的适用性。最后，重点介绍了未来工作的结论和趋势。