Preparation and Properties of Self-healing Microcapsules Coatings

By incorporating the repairing agent using microencapsulation technology and preparing intelligent, responsive composite coatingsafter mixing, dispersing, and plastic coatingwith the layers, an externally aided self-healingmicrocapsulematerial is created. The microcapsules embedded in the coatings were ruptured when exposed to external forces such as chemical corrosion, outer mechanical strength, other external factors, structural damage, and microcracks caused by stress. The repairing agent was released to undergo a cross-linking reaction with the coating's curing agent for automatic repairing, prolonging thecoating's service life. This study used in-situ polymerization to create self-healing microcapsules using organic repairing chemicals as the core and different polymer resin materials as the wall. Scanning electronmicroscopy (SEM), Fourier transforms infrared spectroscopy (FTIR), and other techniques were used to study self-healing microcapsules' structure, shape, and characteristics. In addition, the repairability of the microcapsules was characterized by testing the change in tensile strength of the coating before and after repair.