Tung oil In a recent study, urea-formaldehyde (UF) microcapsules loaded with tung oil were prepared by in-situ polymerisation. A self-healing coating was prepared by the addition of 5 wt.% microcapsules into an epoxy matrix. The new film that formed by the polymerisation of tung oil at the scratched area displayed a resistance value of more than 106 Ω·cm of the oxide layer in the neat epoxy coating. A neutral salt spray tests also confirmed the good anti-corrosion performance of the self-healing coating. Jianyang Li et al., Progress in Organic Coatings, 2021, Vol. 156. ...