The ocean is the largest and harshest corrosive environment on the planet. Climatic conditions such as large temperature differences at sea, high humidity, and high salt spray have greatly accelerated the process of material aging and corrosion. Seawater, sediment, oil and gas, and marine life are also all kinds of corrosive media. As an aircraft carrier traveling in the sea all year round, in such a highly corrosive environment, whether it is stainless steel, aluminum alloy or copper, it must rust, especially the part located on the waterline. The rust situation is more serious. At present, no matter whether it is China ’s “Liaoning” or “Shandong” aircraft carrier or the US nuclear-powered aircraft carrier, the problem of rusting of the hull, especially the part in contact with seawater, cannot be completely avoided.

To solve this problem, in addition to the use of special metal materials to improve the corrosion resistance of the hull, the anticorrosive coating on the surface also plays an important protective role. This surface protection technology can effectively prevent or delay the corrosion of the hull. At present, anticorrosive materials and technologies that have been promoted and applied in the research stage include high-speed arc spray anticorrosion technology, nano brush anticorrosion technology, plasma spray anticorrosion technology, amorphous alloy Anti-corrosion technology for electroless plating, nano-solid film anti-friction anti-corrosion technology, nano anti-corrosion coating and coating technology, etc.

This year, the project "New technologies for the design and preparation of high-performance marine coating materials and their applications" nominated for the second prize of the National Science and Technology Invention Award has formed a series of high-performance coating materials and their new technologies through molecular design and synthesis of resins. Among them, the middle-coat and top-coat long-lasting anticorrosive coating material and its new preparation technology are improved by designing siloxane and epoxy resin, and further cross-linking and curing reaction through hydrolysis-polycondensation to generate organic = inorganic Hybrid resin coating can combine the middle coating and the top coating into one, which not only greatly shortens the construction period, but also avoids the problem of poor corrosion resistance caused by weak coating-coating interaction in traditional anticorrosive materials. Developed a series of long-lasting anticorrosive coating materials, which greatly improved the anticorrosive performance of the system. The project was successfully applied to various ships, marine facilities, aircraft, meteorological instruments, including the aircraft carriers "Liaoning" and "Shandong".