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, 1 H-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.

Combination of vinyl carbazole and thiophene groups’ excellent thermal properties and optical properties, a novel polymer named poly(2,7-bi-2-thienyl-9-vinyl-9-H-carbazole) was synthesized via radical polymerization and Suzuki reaction. The polymer was characterized using Fourier transform infrared spectrometer(FT-IR), gel permeation chromatography(GPC), differential scanning calorimetry(DSC), and X-Ray fluorescence spectrometer(XRF). It was found that this π-conjugated polymer containing vinyl carbazole and thiophene groups gave a high glass transition temperature (Tg=251°C). This feature made poly(2,7-bi-2-thienyl-9-vinyl-9-H-carbazole) possessing an excellent thermal performance.