Fabrication and Characterization of a Modified Conjugated Molecule-Based Moderate-Temperature Curing Epoxy Resin System
| Autor: | Ting Tong, Liu Ding, Ji Ping Yang, Xiao Li Hao |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Materials Science (miscellaneous) curing agent methylimidazole 02 engineering and technology Activation energy 010402 general chemistry lcsh:Technology 01 natural sciences epoxy resin chemistry.chemical_compound Differential scanning calorimetry moderate-temperature curing Ultimate tensile strength Fourier transform infrared spectroscopy Curing (chemistry) lcsh:T Nuclear magnetic resonance spectroscopy Epoxy 021001 nanoscience & nanotechnology Cyanate 0104 chemical sciences chemistry conjugated molecule visual_art visual_art.visual_art_medium 0210 nano-technology Nuclear chemistry |
| Zdroj: | Frontiers in Materials, Vol 7 (2020) |
| ISSN: | 2296-8016 |
| DOI: | 10.3389/fmats.2020.577962 |
| Popis: | A 2-Methylimidazole derivative [ethyl glycidyl ether (EGE)–2-MI] was synthesized through the reaction of EGE with the conjugated molecule 2-MI. The structure was confirmed by Fourier transform infrared spectroscopy, 1H-nuclear magnetic resonance spectroscopy, and differential scanning calorimeter. The synthesized EGE–2-MI was applied in epoxy resin E-51 as a latent curing agent. Kinetics of the curing reaction were studied by a differential scanning calorimeter method, optimum curing process parameters were determined, storage life of the resin system at room temperature was evaluated, and mechanical properties of the moderate-temperature-cured products were also tested and analyzed. The results revealed that the epoxy resin system using EGE–2-MI as the curing agent can be efficiently cured at 110–120°C, with an activation energy of 86.34 kJ/mol. The storage period of the EGE–2-MI/cyanate resin system can reach 14 days under ambient temperature. In addition, the cured mixture with EGE–2-MI/cyanate resin has a tensile strength of 40 MPa and an Al–Al adhesion shear strength of 20.11 MPa. |
| Databáze: | OpenAIRE |
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