Performance of waterborne polyurethane based on N-tert-butyldiethanolamine in corrosion inhibition

Abstract

The design of bifunctional inhibitors effectively preventing hydrate formation and corrosion is a relevant issue for the oil and gas industry. In this work, we expanded the study of the corrosion inhibition effectiveness for waterborne polyurethanes (WPUs) obtained earlier and shown to be promising inhibitors. The corrosion inhibition ability of WPUs was assessed using weight-loss and electrochemical methods. Commercial corrosion inhibitor Armohib CI-28 was taken as a reference sample. The data obtained showed that the tert-Bu-WPU sample is able to effectively inhibit acid and carbon dioxide corrosion at room temperature; however, with an increase in temperature, its efficiency decreases more intensively than for a commercial inhibitor. In general, waterborne polyurethanes are promising alternatives to commercial reagents due to their multifunctionality.