Pigmented epoxy polyamine self-healing coating based on polyurea-calcined fly ash-linseed oil (PU-CFA-oil) microcapsule

A self-healing pigmented coating incorporating polyurea microcapsules with linseed oil and calcined fly ash was synthesized, characterized through various analytical techniques, and tested across four formulations, with the Microcapsule 4.35 wt% (MC435) variant exhibiting marked enhancements in abrasion resistance and hydrophobicity, while the Microcapsule 8.70 wt% (MC870) formulation showed decreased abrasion resistance despite notable improvements in contact angle and self-healing properties. • Sustainable smart self-healing pigmented epoxy coating based on Microcapsule. • Interfacial polymerized Polyurea microcapsule with a core of linseed oil impregnated calcined fly ash • Lower dosage, superior abrasion resistance, and optimum hydrophobicity.