Preparation, characterization and repeated repair ability evaluation of asphalt-based crack sealant containing microencapsulated epoxy resin and curing agent

Infrared spectrum of the B-type microcapsule. The material composition of the prepared microcapsules was analyzed using Fourier Transform Infrared Spectroscopy (FT-IR), and the microcapsules were successfully prepared by analyzing the absorption characteristics in infrared radiation of different wavelengths. The a, b, and c represent the spectra of the core material, the wall material, and the microcapsules, respectively.