Urea–formaldehyde (UF) capsules were synthesized in micro and nano sizes, containing linseed oil (LO).
The micro- and nanocapsules were incorporated through epoxy coatings and the coatings were applied
on C-steel panels. Then the self-healing performance of the coatings was investigated. The corrosion
resistance, adhesion strength and its retaining after immersion of nanocapsule incorporated coatings
were compared with the optimum microcapsule incorporated ones.