Fabrication of microcapsules containing dual-functional tung oil and properties suitable for self-healing and self-lubricating coatings

摘要

Highlights?Poly(urea-formaldehyde) (PUF) microcapsules containing dual-functional tung oil were prepared.?The multi-functional epoxy coating showed excellent anti-corrosion and anti-wear performance.?The self-healing and self-lubricating mechanism of epoxy coating were proposed and confirmed.AbstractTung oil-loaded microcapsules with the protection of Poly(urea-formaldehyde) (PUF) shells were prepared by in-situ polymerization method. Microcapsules keep the spherical shape with core content of more than 80.0wt%. The average diameter was approximately 105μm. Microcapsules exhibit excellent thermal stability. Dual-functional coatings were prepared by incorporating tung oil-loaded microcapsules into epoxy. Self-healing and self-lubricating function of coatings were realized by the releasing of tung oil from microcapsules under the scarp or wear condition. Tung oil has excellent film-forming property when they contact with oxygen. self-healing anti-corrosion and self-lubricating anti-wear properties were eva