SYNTHESIS METHOD FOR ROSIN-BASED IMIDAZOLINE DERIVATIVE CORROSION INHIBITOR AND APPLICATION THEREOF

摘要

The present invention relates to synthesis and application of a metal anticorrosive compound. Specifically disclosed are a synthesis method for a rosin-based imidazoline derivative corrosion inhibitor and an application thereof. In the synthesis process, triethylene tetramine and dehydroabietic acid are used as raw materials to prepare a rosin-based imidazoline derivative corrosion inhibitor intermediate, then phosphorous acid is employed to implement Mannich reaction modification on the intermediate so as to obtain the rosin-based imidazoline derivative corrosion inhibitor. Structural characterization of the corrosion inhibitor using infrared spectroscopy and analysis by an electrochemical process, a dynamic weight loss process, energy spectrum analysis, electron microscope scanning and other methods find that the corrosion inhibitor has a good corrosion inhibition effect on metals, and moreover, addition of the corrosion inhibitor reduces the corrosion current density and decreases the corrosion rate.