Anticorrosion Performance of Zinc Ferrite Pigmented Lignin/Phenol Epoxy Novolac Resin Based Coating

Abstract:

Corrosion in most processing equipment has always been a key research area. It is an important threat that needs to be prevented and controlled. Application of epoxy-based coatings on the surfaces of metallic parts is among the preventive measures but it is toxic and expensive. In this work, the anticorrosion performance of zinc ferrite pigmented bio-based epoxy-novolac coatings was studied. Initially, bio-based novolac resins were prepared by condensation from the reaction between phenol, bio-oil phenolic fractions and formaldehyde in an acidic medium. The prepared novolac was later transformed to epoxide with epichlorohydrine and 30 percent sodium hydroxide solution. The final coating formulation was obtained by mixing the prepared epoxy with zinc ferrite (a nontoxic anticorrosion pigment) and solvent. Anticorrosion tests using the formulated coatings and two other conventional coatings for comparison were conducted by simulating actual field conditions in a closed autoclave loop system that used 3 percent sodium chloride and water medium. The results showed that the zinc ferrite pigmented bio-based formulated coatings are very efficient in protecting the substrates since they exhibit similar protection ability with the conventional ones. The prepared epoxy can be said to be an eco-friendly and cheap source of resin for coating formulation that will reduce production cost and negative environmental effects as compared to conventional materials

• Periodical: Applied Mechanics and Materials (Volume 695)
• Pages: 110-113
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.695.110
• Online since: November 2014
• Authors: Murtala Musa Ahmed, Noor Shawal Nasri*, Usman Dadum Hamza, Jibril Mohammed, Abdurrahman Garba, Zain Husna Mohd
• Keywords: Bio-Oil, Coating, Corrosion, Epoxy, Lignin, Zinc Ferrite

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