Abstract
Two-component microcapsules of acrylated epoxidized soybean oil (AESO) as a healing agent and trimethylolpropane tris(3-mercaptopropionate) as hardener (TMPMP), were encapsulated with the poly(methyl methacrylate) (PMMA) shell by solvent evaporation method.The chemical structure and morphologies of the core/shell microcapsules were confirmed using Fourier-transform infrared spectroscopy (FTIR) and Field emission scanning electron microscopy (FE-SEM), respectively. The thermal properties of the microcapsules were investigated through thermogravimetric analysis (TGA). FE-SEM confirmed that both types of microcapsules have a spherical shape with an average diameter of approximately 6.2 μm.The two-component microcapsules were included in epoxy resin, and the healing performance of the system was assessed. From Electrochemical impedance spectroscopy (EIS) and salt spray test, the best self-healing performance was obtained for 0.5 wt% two-component microcapsules. For epoxy coatings containing 0.5 wt% of microcapsules, after five months of exposure under salt water 3.5 %, no corrosion effect was observed on the epoxy coating, indicating that there are enough high-performance materials in the microcapsules to heal cracks and the click reaction has been a very effective reaction to create this healing resin.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
