Corrosion protection of steel pipelines

Researchers report the facile fabrication of superhydrophobic nanocomposites coating materials ans their application for protecting the inner surfaces of petroleum carbon steel pipelines.

A pipeline.
The most imperative factors affecting the increase in the corrosion rate of the petroleum pipelines are the high salinity of the formation water produced during crude oil production Image source: Robzor - Pixabay (symbol image).

A new paper aims to fabricate new superhydrophobic nanocomposite coating materials to protect the inner surfaces of the petroleum pipelines from corrosion. The batch emulsification polymerisation technique (BEM) was used as a facial eco-friendly technique to prepare three hydrophobic (styrene/vinyl acetate) copolymers. The sol–gel method was used to prepare SiO2 nanoparticles (SiO2-NPs) with average size ranging from 90 to 101 nm. The functionalised SiO2-NPs were prepared using hexadecyl trimethoxy silane (HDTS) as a precursor to increase the hydrophobicity character of the unfunctionalised SiO2-NPs.

High corrosion efficiency

Three superhydrophobic nanocomposites denoted as M1, M3, and M5 were fabricated by incorporating 1, 3, and 5 wt% of the functionalised-SiO2NPs into the styrene/vinyl acetate copolymer, respectively. The effectiveness of the fabricated nanocomposite coating materials was analysed using contact angle measurement and transmission electron and atomic force microscopies. The results showed that the highest contact angle of 161.21o was obtained by M5-nanocomposite. The highest corrosion efficiency of 99.63% was obtained at 300 ppm concentration of M5-nanocomposite-coated solution.

The study has been published in Journal of Coatings Technology and Research, Volume 20, Issue 1, January 2023.

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