基于动态配位作用的新型苯并三氮唑基环氧树脂的构筑及其增强增韧机制

打开文本图片集

中图分类号：TB333.2 文献标志码：A 文章编号：1671-8755（2025）03-0028-07

Abstract：A novel epoxy resin with excellent strength and toughness was constructed by introducing benzotriazole（BTA）as a side group into the epoxy resin skeleton and utilizing the coordination effect between BTA and metal ions. The structure of epoxy resin was characterized by Fourier transform infrared spectroscopy，and the interaction between BTA and copper ions was explored through a combination of theoretical calculations，UV- Vis spectroscopy and fluorescence spectroscopy. The results demonstrate that the introduction of BTA into epoxy resin and immersion in a O.1 mol/L copper ion solution significantly improve its mechanical properties，with tensile strength increasing from O.929 MPa to 4.39 MPa and elongation at break increasing. The significant improvement in mechanical properties is attributed to the metal coordination between BTA and copper ions， whose dynamic and reversible binding and fracture behavior helps disspate energy in the polymer network，thereby achieving synchronous enhancement of toughness and strength of epoxy resin.

Keywords：Benzotriazole；Epoxy resin； Coordination interaction；Strengthening and toughening

环氧树脂是一种广泛使用的高性能聚合物材料，广泛应用于电子、航空航天、汽车、建筑和涂料等多个领域[1-2]。（剩余8757字）