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



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

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

First, the development of water-based anti-corrosive primer and finishing coat for steel structures must solve the frustration of idle corrosion and poor water resistance of the substrate. The emergence of some new emulsifier free lotion has fundamentally improved the title of poor water resistance. In the future, the title of construction function and application function should be focused on. As a topcoat, it is mainly to improve its decoration and durability under the condition of ensuring the protection function.

Second, it is urgent to develop a series of high solid and solvent-free anti-corrosion coatings for drilling, offshore platforms and large-scale anti-corrosion projects. At present, this market is basically occupied by foreign-funded enterprises and imported products. There is a big gap between China's products and foreign investors in terms of comprehensive strength, such as technical level, economic strength, quality assurance system and product reputation, and it is difficult to enter the market. Therefore, efforts should be made in the technical development first, especially in the development of lead-free and chromium free antirust paint primers, namely zinc phosphate and aluminum tripolyphosphate based antirust primers.

Analysis and prediction: eight trends in the future development of anti-corrosion coatings

Third, the development of water-based zinc rich primer inorganic zinc rich primer and water-based inorganic zinc rich primer is one of the long-term primers, but they are solvent based coatings. The waterborne inorganic zinc rich primer with high modulus potassium silicate as the base material is a proven high-performance anti-corrosion coating with development potential.

Fourth, the development of room temperature curing heat-resistant anti-corrosion coatings for heat exchangers requires anti-corrosion coatings with heat resistance and high thermal conductivity. The epoxy amino coatings currently used need to be cured at 120 ℃ and require multiple coatings, which cannot be used in large devices.

Fifthly, the key to develop coatings that can be solidified at room temperature and convenient for construction is to find the best balance between the anti-corrosion function, heat transfer function and constructable function of the coatings. The sixth is to develop substitutes for chlorinated rubber series anti-corrosion coatings. Because chlorinated rubber is a single component, convenient for construction, excellent in water resistance, oil resistance, and atmospheric aging resistance, it is widely used in shipbuilding, industrial anti-corrosion and other fields, and has a broad market at home. But because CC1 is used as solvent to produce chlorinated rubber, the ozone layer is destroyed. Developed countries have developed their substitutes one after another, and the more successful ones are MP chloroether resin series of German BAST Company, aqueous chlorinated polyethylene or modified products.

Seventh is to develop a scale like anticorrosive coating, micaceous iron oxide (MIO), which has excellent medium resistance, atmospheric aging resistance and blocking function, and is widely used as primer and finish in Western Europe. There is a certain gap between domestic MIO and foreign MIO in particle size distribution, diameter thickness ratio, density, etc. Similar problems also exist in the development of glass flake coatings.

Eighth, the development of organic modified inorganic anti-corrosion materials In recent years, organic lotion modified concrete has been used abroad to improve its strength and medium resistance, and is widely used in the coating of industrial floors. Among them, epoxy water lotion (or solvent epoxy) is the fastest growing, which is called polymer cement. In the past 10 years, China has also started to use it in anti-corrosion projects, but the development work is not systematic, and no series of products have been formed.