The marine environment is a very serious corrosive environment for steel structures. According to the corrosive mechanism of the marine environment on the steel structure, the marine environment can be divided into an atmospheric zone, a splash zone, a tidal zone, a full immersion zone and a sea mud zone. Zhisheng Weihua anti-corrosion technicians found that due to the difference of corrosion factors in various areas, there are differences in the longitudinal corrosion rate of steel structures. Relevant research shows that the marine splash zone has the highest corrosion rate due to the combination of various corrosion factors. The seawater splash zone above sea level is often the most severe part of corrosion due to the harsh stress corrosion conditions.
The splash zone refers to the part of the steel structure that is above and below the average high tide level, which is caused by the tidal, wind and waves. Seawater is a very complex system, the splash zone is often wetted by saturated seawater, the surface electrolyte concentration is higher; the temperature is higher under sunlight; the oxygen-rich spray splash impact and dry-wet alternating, sea surface floating object impact, seawater contact The large impact caused by the bursting of bubbles on the surface of the material destroys the surface of the material and the corrosion protection layer to aggravate the corrosion. Zhisheng Weihua anti-corrosion coating technicians pointed out that the general steel material has the strongest corrosion in this area, and the anti-corrosion protection layer is also the most easy to fall off. For the steel structure in the splash zone, the parts above the waterline and below the waterline are to be compared. The water part is the cathode area and the underwater part is the anode area. The electrochemical corrosion also aggravates the safety performance of the steel structure on the waterline.
Coating protection for marine steel structures is the most economical and effective method, but the coating treatment requires high surface treatment, and the commonly used coatings are difficult to meet the long-term impact resistance requirements, and must be achieved on the surface of the steel structure being used. The necessary coating requirements, for this purpose, Beijing Zhisheng Weihua Chemical Co., Ltd. Joint Forces Research Institute jointly developed a high anti-corrosion demand for equipment. Zhisheng Weihua ZS-711 inorganic heavy-duty anti-corrosion coating, using the world's most advanced anti-corrosion cutting-edge technology, inorganic polymer chelation The membrane solution is based on a siloxy-Si-O-Si-bond, grafted with an organoalkyl side chain as an auxiliary, and the hydroxyl group is an end-chain chelated anticorrosive film-forming material, and the bond is bonded to the silicon atom. The combined hydroxyl group and alkyl group have a good ternary synergistic effect, and the solution has strong stability, which reduces the influence on the interior of the polymer, the film formation is denser, the adhesion is strong, and the temperature resistance is high.
At the same time, it has good weather resistance, corrosion resistance, acid rain resistance, coating coating performance, easy repair, good coating flexibility and excellent ductility, impact resistance and vibration resistance. It can be cured at low temperature. Suitable for the protection of steel structures in the marine environment. Because ZS-711 inorganic anti-corrosion coating anti-corrosion pigment is composed of highly dispersed activated passivated metal particles, nano-graphite scales, nano-metal amphoteric oxide, ultra-fine rare earth ultra-fine powder. The anti-corrosion pigments activated by Zhisheng Weihua Inorganic Anti-corrosion Coatings can resist corrosion and enhance polarization during corrosion protection. It has high resistance to acid, alkali and corrosion, and plays a good role in neutralizing and preventing the increase of substrate potential. It can also avoid the existence of coated pinholes, high hardness, wear resistance and impact resistance, long acid and alkali aging time, that is, good resistance to galvanic corrosion.
ZS-711 inorganic anti-corrosion coating coating coating formed by inorganic polymer chelate film solution and highly activated anti-corrosion pigment can quickly react with atomic material or ion on the surface of the object to form a triple protection of physical, chemical and electronic protection. It is firmly bonded to the surface of the substrate by chemical bonds and ionic bonds. It has a good protective matrix function for the physical anti-corrosion, chemical anti-corrosion and electronic anti-corrosion of the substrate. This heavy-duty anti-corrosion coating technology can greatly extend the maintenance period of marine steel structure facilities, reduce maintenance costs, save manpower and material resources, improve the durability of structures, and extend the service life of steel structures. ZS-711 inorganic anti-corrosion coating has wide adaptability to steel facilities exposed to the marine spray splash zone.
The corrosion of the spray-splash zone of steel facilities in the marine environment is the most serious, and it is also the weakest link in current marine anti-corrosion. Corrosion in the spray zone plays a decisive role in the life of the overall steel structure, which not only causes corrosion damage and function loss of various infrastructures, equipment and structures, but also shortens the service life of materials and structures, resulting in huge resources, materials and energy. Waste; it can also lead to sudden disasters, such as oil spills, pollution of the marine environment, and even personal injury. Therefore, the development and promotion of strategic marine anti-corrosion technology is of great significance to guarantee the healthy and orderly development and construction of China's blue ocean economy.
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