Evaluation of coactive influence of oil based self-healant in functional coatings

Abstract

Since long back, organic coatings tailored to corrosion protection of the underneath metallic substrates to ensure reliability and durability of the coated part. Whereas, imperfections in these coatings due to weathering leads to crack which eventually exposes a small area of the metal, thus, leads to localised corrosion. Self-healing coatings are smart coatings with the ability to heal such cracks autonomously to restore the protective function of the coatings. In present investigations, the efficiency of linseed oil-filled UF microcapsules was found to be improved by blending soybean oil to linseed oil in varying ratios. The efficiency of various blended microcapsules (SLO) was compared with linseed oil microcapsules (LO) for corrosion resistance in epoxy coatings. The experimental results revealed successful encapsulation of UF microcapsules of blended Linseed-Soybean oil (UF-SLO) and UF microcapsules of Linseed oil (UF-LO) by in situ polymerization. The synthesized microcapsules were characterized by optical microscope, particle size analyser, Fourier-transform infrared spectroscopy (FTIR), and thermogravimetric analyser (TGA) to investigate their surface morphology, size distribution, chemical structure (core and shell materials), and thermal stability of the microcapsules respectively.

Keywords:

• Self-healing
• microencapsulation
• linseed oil
• soybean oil
• anticorrosive coatings

Acknowledgements

The authors would like to acknowledge Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon for financial assistance under the Scheme of VCRMS and The Shree Surya Coating, Industries, Nasik for providing Chemical support.

Disclosure statement

No potential conflict of interest was reported by the author(s).