A fully polymerized (cured) thermoset is no longer capable of flow like a thermoplastic to be recycled and reprocessed into a new object. Developing repairable, malleable and recyclable thermoset is necessary to reduce the ever-increasing polymer waste as well as to extent the service life of the existing polymer materials. As a new class of “recyclable” and/or “reprocessable” crosslinked polymer, “vitrimers” have just emerged in the recent decade. Vitrimers are permanently crosslinked polymers based on dynamic covalent networks. Such networks are stable at the service temperature yet become labile and reprocessable at elevated temperatures due to stimulus activated bond-exchange reactions. Because vitrimers combine the advantages of both thermosets and thermoplastics, they have received extensive attention. There are many vitrimer chemistries that have been reported. In this review, the discussion is focused on the developments of vitrimers based on dynamic transesterification reaction (DTER) between hydroxy groups and ester bonds, which is one of the most representative vitrimer chemistries. This review mainly includes the discussions of synthetic methods, vitrimer behaviors, application developments, and recycling methods. In addition, the challenges and outlook are also provided.

完全聚合（固化）的热固性塑料不再像热塑性塑料一样能够流动，可以循环再加工成新的物体。开发可修复，可延展和可回收的热固性材料对于减少日益增加的聚合物浪费以及延长现有聚合物材料的使用寿命是必不可少的。作为一种新型的“可回收”和/或“可再加工”的交联聚合物，最近几年出现了“玻璃素”。Vitrimers是基于动态共价网络的永久交联聚合物。这样的网络在使用温度下是稳定的，但是由于刺激活化的键交换反应而变得不稳定并且在高温下可再加工。由于三聚体结合了热固性塑料和热塑性塑料的优点，因此受到了广泛的关注。已经报道了许多玻璃化剂化学。在这篇综述中，讨论集中在基于羟基和酯键之间的动态酯交换反应（DTER）的三聚体的开发，这是最具代表性的三聚体化学方法之一。本文主要讨论了合成方法，vitrimer行为，应用开发和回收方法。此外，还提供了挑战和前景。和回收方法。此外，还提供了挑战和前景。和回收方法。此外，还提供了挑战和前景。