In the future, China's anti-corrosion coating industry will develop in eight directions

Anti-corrosion coatings have played a significant role in the application of various industries in China. In the future, China's anti-corrosion industry will develop in eight aspects:

The first is to develop water-based anti-corrosion primers and topcoats for steel structures. Water-based anti-corrosion primers must address the frustration of substrate "idle corrosion" and poor water resistance. The emergence of some new types of emulsifier emulsions has fundamentally improved the problem of poor water resistance. In the future, the focus should be on solving the problems of construction performance and application performance. As a topcoat, the main purpose is to enhance its decorative and durable properties while ensuring the protective function.

The second is to develop a series of high-solid content and solvent-free anti-corrosion coatings. There is an urgent demand for ultra-durable anti-corrosion coatings in drilling, offshore platforms and large-scale anti-corrosion projects. Currently, this market is basically occupied by wholly foreign-owned enterprises and imported products. Global Coatings Network has learned that there is a significant gap between China's products and foreign ones in terms of comprehensive strength such as technical level, economic strength, quality assurance system and product reputation, making it difficult for them to enter the market. To this end, efforts should first be made in technological development, especially in the development of lead-free and chromium-free anti-rust pigment primers, that is, anti-rust primers mainly composed of zinc phosphate and aluminum tripolyphosphate.

The third is to develop water-based zinc-rich primers. Inorganic zinc-rich primer and water-based inorganic zinc-rich primer are among the long-lasting primers, but they are both solvent-based coatings. The water-based inorganic zinc-rich primer with potassium silicate of high modulus as the base material is a high-performance anti-corrosion coating that has been tested in practice and has development potential.

The fourth is to develop heat-resistant and anti-corrosion coatings for heat exchangers that can be cured at room temperature. Heat exchangers require anti-corrosion coatings that are heat-resistant and have high thermal conductivity. Currently, the epoxy amino paint in use needs to be cured at 120℃ and requires multiple coats, which cannot be used on large-scale equipment.

The fifth is to develop coatings that can cure at room temperature and are convenient to apply. The key lies in achieving the best balance among the anti-corrosion performance, heat transfer performance and workability of the coating.

The sixth is to develop substitutes for chlorinated rubber series anti-corrosion coatings. Because chlorinated rubber is a single-component type, it is convenient to apply and has excellent water resistance, oil resistance and resistance to atmospheric aging. It is widely used in fields such as ships and industrial anti-corrosion, and has a broad domestic market. Global Coatings Network has learned that the use of CC1 as a solvent in the production of chlorinated rubber has damaged the ozone layer. Industrialized developed countries have been developing their substitutes one after another. Some of the more successful ones include the MP chlorinated ether resin series of German company BAST, water-phase chlorinated polyethylene or modified products.

The seventh is to develop flaky anti-corrosion coatings. Mica iron oxide (MIO) has excellent resistance to media, atmospheric aging and sealing performance. It is widely used as a primer and topcoat in Western Europe. The MIO produced domestically has certain gaps compared with foreign products in terms of particle size distribution, aspect ratio and density. Similar problems also exist in the development of glass flake coatings.

The eighth is to develop organic-modified inorganic anti-corrosion materials. In recent years, organic emulsion modified concrete has been widely used abroad to improve its strength and resistance to media, and is extensively applied in the coating of industrial floors. Among them, epoxy water emulsion (or solvent-based epoxy) has developed the fastest and is called polymer cement. Over the past 10 years, it has also been adopted in anti-corrosion projects in our country, but the development work has not been systematic and a series of products have not been formed.