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Polyurethane/f-Oil Fly Ash-ZnO Atmospheric Corrosion Protective Coating

Product Number: 51321-16345-SG
Author: Mohammad Mizanur Rahman
Publication Date: 2021
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$20.00
$20.00

Acid-functionalized oil fly ash (f–OFA-COOH) was reacted with zinc oxide (ZnO) for the in-situ growth of an inhibitor (ZnO) on functionalized oil fly ash, forming f-OFA-ZnO. f-OFA-ZnO was used to synthesize waterborne polyurethane (WBPU) dispersions with defined f-OFA-ZnO contents. The dispersions were used as a protective coating on mild steel. The protective properties varied with f-OFA-ZnO contents. The maximum adhesive strength, highest water contact angle and minimum water swelling were recorded using 2.00 wt% f-OFA-ZnO. All coatings were exposed near a seaside to evaluate their atmospheric corrosion protective properties. Most of the coatings corroded slightly. A significant improvement in corrosion protection was observed for only the coatings with higher f-OFA-ZnO contents, which were prepared by the in-situ polymerization method

Key words: Polyurethane, ZnO, coating

Acid-functionalized oil fly ash (f–OFA-COOH) was reacted with zinc oxide (ZnO) for the in-situ growth of an inhibitor (ZnO) on functionalized oil fly ash, forming f-OFA-ZnO. f-OFA-ZnO was used to synthesize waterborne polyurethane (WBPU) dispersions with defined f-OFA-ZnO contents. The dispersions were used as a protective coating on mild steel. The protective properties varied with f-OFA-ZnO contents. The maximum adhesive strength, highest water contact angle and minimum water swelling were recorded using 2.00 wt% f-OFA-ZnO. All coatings were exposed near a seaside to evaluate their atmospheric corrosion protective properties. Most of the coatings corroded slightly. A significant improvement in corrosion protection was observed for only the coatings with higher f-OFA-ZnO contents, which were prepared by the in-situ polymerization method

Key words: Polyurethane, ZnO, coating

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