Abstract
Self-healing epoxy polysulfide coating has been developed using Allantoin Amino Silica (A2SiO2) as an innovative filler, synthesized through innovative condensation polymerization and ultrasonication. Four dynamic formulations, featuring 3%, 5%, 10%, and 20% A2SiO2, were created, showcasing the potential of modern materials. The coatings (APY and A2SiO2) were characterized with a robust array of techniques, including Particle Size Analysis, Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Pyrolysis Gas Chromatography-Mass Spectroscopy (Py GC-MS), Flow Injection Mass Spectrometry, Nuclear Magnetic Resonance Spectroscopy (1H NMR), and Fourier-transform Infrared Spectroscopy (FTIR). Remarkably, the 10% A2SiO2 formulation emerged as the champion, improving abrasion resistance by 61.6% compared to the control, while maintaining tensile properties with minimal reduction in elongation and offering the highest wear resistance. This remarkable coating also displayed a contact angle greater than 90°, affirming its enhanced hydrophobicity. All formulations achieved an inspiring average self-healing rate of 86% at 50 °C after just 24 h.
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