Metal anti-corrosive paint in marine environment

With the rapid development of China's shipbuilding industry Marine coatings Manufacturers have entered China in succession, especially foreign manufacturers, especially European companies (such as Quan, Jotun, Haihong, Sigma), Japanese companies (such as Zhongtu, Kansai) and other manufacturers monopolize ships coating Market, accounting for more than 95% of the market share. Domestic paint enterprises have a weak sense of brand, and their main market is small ship companies. In view of this situation, Zhisheng Weihua takes the purpose of serving the country and the world with science and technology as its own responsibility, to meet the requirements of preventing seawater, marine atmospheric corrosion and marine organisms from adhering to other Special requirements for hull corrosion, as well as the shipowner's efforts to reduce maintenance costs and improve the utilization rate of the ship. Constantly introduce new types of heavy Anticorrosive coating To meet the needs of practical applications. ZS-711 inorganic anti-corrosion coating developed by the research team of Zhisheng Weihua Chemical Co., Ltd. has a longer anti-corrosion period for ships. Longer life.

It can be used under harsh conditions and has a long anti-corrosion life. Heavy anti-corrosive coatings can be used for more than 10 or 15 years in chemical atmosphere and marine environment, and can be used for more than 5 years even in acid, alkali, salt and solvent media and under certain temperature conditions. Thick film is an important symbol of heavy anti-corrosive coatings. The dry film thickness of general anti-corrosion coatings is about 100 μ m or 150 μ m, while the dry film thickness of Zhisheng Weihua inorganic anti-corrosion coatings is more than 200 μ m or 300 μ m, and 500 μ m~1000 μ m.

Due to the long-term immersion of sea water, the impact of flowing water, the alternation of dry and wet, the stripping of shade, the erosion of sea water, fog, sea wind, the impact of temperature changes, and sunlight, the coating on the bottom and waterline area accelerates the loss of light, pulverization, and even cracking and falling off of the paint film. The long-term existence of chloride ions will promote the corrosion reaction and accelerate the corrosion rate, The chloride ion corrosion starts from pitting corrosion cracks or corrosion concave surfaces, making the damaged passive film irreparable. Therefore, the corrosion continues to deepen until the metal is damaged as a branch crack. In addition, it has strong penetrability and is easy to penetrate the protective film on the metal surface, resulting in crevice corrosion and pitting corrosion, which terminates the protection of the ship.

In order to solve this problem, ZS-711 inorganic anticorrosive coating adopts inorganic polymer chelating film forming solution, which is composed of siloxy - Si-O-Si - key On the basis of this, the antiseptic film-forming material grafted with the alkyl side chain of the agricultural production system as a supplement, and then chelated with the hydroxyl end chain, has a good ternary synergistic effect on the hydroxyl and alkyl groups connected to the silicon atom, has strong solution stability, reduces the impact on the internal of the polymer, and the film-forming material is more dense and has stronger adhesion.

The ship heavy anti-corrosion inorganic anti-corrosion paint, ZS-711 inorganic anti-corrosion paint anti-corrosion pigment is composed of highly dispersed activated passivated metal particles, nano graphite flakes, nano metal amphoteric oxide, ultra-fine rare earth ultrafine powder, etc. These activated anti-corrosive pigments can play a role in corrosion resistance enhancement and comparison. They have high acid, alkali and corrosion resistance, play a good role in neutralizing and preventing the rise of substrate potential, and can also avoid the existence of coating pores. The coating has high hardness, wear resistance and impact resistance, and long acid and alkali aging resistance.

The coating formed by inorganic polymer chelating film forming solution and highly activated anti-corrosive pigment can react with atoms or ions on the surface of the object rapidly to form a triple protective effect of physics, chemistry and electron. Through chemical bond and ion bond, the coating can firmly combine with the surface of the substrate to successfully prevent the corrosion damage of chloride ions, And corrosion caused by other factors. The service life of the ship is extended.

Test of ZS-711 Heavy duty Inorganic Anticorrosive Coating for Ships:

No blistering, no shedding and slight discoloration are allowed after immersion in seawater and semi saline at 85 ℃ for 24 months;

The industrial circulating water shall be soaked at 85 ℃ for 36 months without blistering, falling off, and slight discoloration is allowed;

The ship heavy anti-corrosion inorganic anti-corrosion coating, ZS-711 inorganic anti-corrosion coating, according to the actual use on the ship, has a good role in protecting the matrix for physical corrosion, chemical corrosion, and electronic corrosion. The paint is pure to the environment, has a long service life, and its anti-corrosion performance exceeds all advanced levels. If it is used together with ZS-1021 sealing paint, it can better reflect the good protection performance of the ship hull.

The ship heavy anti-corrosion inorganic anti-corrosion coating and ZS-711 inorganic polymer anti-corrosion coating are high-tech products developed to meet the special requirements of aerospace, * * * and other fields. The products have been successfully applied in aerospace, * * * and gradually promoted to various industries of the national economy, especially the shipbuilding industry.