The toughening modification mechanism and methods of epoxy resin was systematically discussed,involving modifying materials such as rubber elastomers,thermoplastic resins,hyperbranched polymers,core-shell structured poly-mers,nanoparticles,and thermotropic liquid crystal polymers.By analyzing the toughening modification methods for epoxy resin,it is concluded that the fracture toughness of the modified epoxy resin is significantly improved,along with enhance-ments in bending strength and tensile strength.Finally,the future development of toughening modification methods for epoxy resin is anticipated.
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