Anhydride-cured epoxy resins are widely used in wind turbine blades

aerospace composites

and high-voltage power equipment due to their excellent insulating properties

mechanical strength

and thermal stability.However

the three-dimensional irreversible cross-linking network formed by the curing of epoxy resins makes the materials difficult to be recycled

resulting in waste of resources and environmental pollution

and restricting the sustainable development.In response to the strategic direction of the national circular economy

this study systematically reviews the research progress of degradable anhydride-cured epoxy resins

focuses on the three major technological paths such as ester exchange-catalyzed dynamic remodeling

dynamic covalent bonding

and biobased modification

and comprehensively evaluates the advantages and limitations of physical

chemical

and other recycling technologies.By comparing the existing recycling methods

the development direction of recycling technology is proposed to provide theoretical supports and technical route reference for the construction of closed-loop recycling system.