Antibacterial and Corrosion Inhibition Properties of SA-ZnO@ODA-GO@PU Super-Hydrophobic Coating in Circulating Cooling Water System

Abstract

Abstract: In order to solve corrosion problem of circulating cooling water system, SA-ZnO@ ODA-GO@ PU super-hydrophobic coating was synthesized for pipeline protection. After hydrophobic modification, the contact angle (CA) of the coating was above 150o. The coating antibacterial ability was essential for corrosion protection. SA-ZnO@ODA-GO can seriously damage the cell structure, make the cell content outflow, increase the leakage rate of protein, and make the bacteria unable to reach logarithmic growth phase within 24 h. The corrosion inhibition mechanism analysis of SA-ZnO@ODA-GO@PU coating indicated that the hydrophobic modified coating formed a physical barrier to prevent water molecules from entering the carbon steel. On the surface of the specimen, the coating prevented charge transfer.

Key words: SA-ZnO@ODA-GO@PU coating, super-hydrophobic, antibacterial, corrosion inhibition

References

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