Development of Waterborne Heavy-Duty Anticorrosive Coatings with Modified Nanoscale Titania

The steel structures of coastal engineering in the moist tropics and subtropics are always under a C5/CX level corrosion environment with high temperature, humidity, salt fog. Anticorrosive waterborne coatings weatherability reliability urgently to be developed. In this work, one kind heavy-duty anticorrosive coatings, advantages excellent resistance, self-repairing ability, self-cleaning film compactness, was successfully achieved through modifying side chains on surface morphologies spherical nanoscale titania. micromorphology structure coating were characterized by scanning electron microscope (SEM), transmission (TEM), atomic force (AFM). anticorrosion characteristics forming mechanism modified titania analyzed. spray tests showed that neutral resistance time 1440 h. Its durability reached H met design requirements for 15 years lifetime. had been large-scale commercially applied at some typical an extreme harsh thermal power plant. results no rusting, peeling, or crack phenomena observed after 3 service different conditions.