Аңдатпа
Epoxy/2-hydroxyethyl methacrylate (E0/2-HEMA) hybrids were developed to enhance the physicomechanical performance of a high molecular weight epoxy resin (E0), specifically ELM-NG 900Z based on diglycidyl ether of bisphenol A. Hybrid systems were synthesized by copolymerizing E0 with varying amounts of 2-HEMA (10%, 20%, 30%, and 40%) using triethylamine (TEA) as a catalyst. To assess the impact of 2- HEMA incorporation, hybrid films were evaluated in terms of viscosity, tensile strength, elongation at break, adhesion, hardness, thixotropy index (TI), and resistance to chemical and solvent exposure. The obtained epoxy hybrids were characterized using Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). The epoxy resin, hybrids, and hardener (G-A0533, 310–350 mg KOH/g) were mixed at a 1:0.5 ratio. The incorporation of 2-HEMA significantly improved both the physical and mechanical properties of E0. Notably, the hybrid containing 30% 2-HEMA exhibited the highest adhesion strength (12 MPa) and tensile strength (69.8 MPa) relative to the unmodified epoxy. Enhancements in chemical and solvent resistance, as well as mechanical integrity, were observed with increasing 2-HEMA content up to 30%. These improvements are attributed to the synergistic interaction between functional groups such as double bonds, hydroxyl, carbonyl, and ether moieties facilitating robust network formation within the hybrid matrix. However, at 40% of 2-HEMA, the curing mechanism was disrupted, resulting in incomplete drying and compromised film formation.