环氧树脂增韧改性及其作用机制研究进展OA

Epoxy resin,as one of the most strategically significant thermosetting polymer materials,is widely used in national defense equipment and economic fields,due to its unique chemical structure and ex-cellent performance.However,epoxy resins,known for their high cross-linking density,often suffer from issues such as insufficient toughness,susceptibility to microcracks and other defects.These limitations re-strict their wide application in advanced manufacturing.Focusing on the effective toughening methods for epoxy resin and its composite materials,this work reviews the toughening effects of intrinsic self-toughe-ning methods and extrinsic reinforcement toughening methods on epoxy resin and its composite materials.Furthermore,it focuses on the toughening mechanism and effects of core-shell nanoparticles.Additional-ly,we note that the varying toughening effects stem from the synergistic effects of different toughening mechanisms.The purpose of our review is to foster wider and more in-depth applications of epoxy resin-based composite materials,while offering insights for the development of such materials that possess both superior toughness and strength.