1 Introduction Epoxy (EP), as a classic thermosetting resin is widely used as high-performance protective coatings due to its excellent adhesion, outstanding chemical stability, and superior mechanical strength [1-4]. However, the highly cross-linked three-dimensional network of EP significantly restricts the mobility of molecular chains, resulting in inherent brittleness [5-7]. Typically, its fracture elongation and toughness are below 10% and 5.0 MJ·m−3, respectively.
