As we all know, hot-dip galvanizing is a traditional industrial metal anti-corrosion method, mainly used in metal structural facilities in various industries. Hot-dip galvanizing involves immersing the rust-free steel parts in a zinc liquid melted at about 500°C, so that a zinc layer adheres to the surface of the steel components, thereby achieving the purpose of anti-corrosion. From the perspective of temperature, many engineering companies are daunted. Moreover, against the background of rapid industrial development and the introduction of "carbon neutrality" related policies and systems by the country, the anti-corrosion of steel structures in various projects must consider environmental issues. Cold galvanizing and graphene zinc, as processes that can gradually replace hot spray zinc, have excellent performance.

the well-known zindn cold galvanizing compound in the industry as an example. The dry film contains more than 95% zinc. The coating is combined with cathodic protection and barrier protection. The exposed layer can be converted into dense zinc salt under the action of acid, alkali, and salt in the atmosphere, so that the coating has a unique triple protection effect. The single coating of zindn cold galvanizing compound (film thickness 80μm) has a protection period of up to 30 years in the indoor atmospheric environment. When matched with heavy anti-corrosion coatings, the composite three-coating system (film thickness 260μm) can achieve a higher anti-corrosion period. In terms of construction performance, hot spray zinc uses a heat source to melt low-melting-point metal materials and spray them onto the surface of the substrate at a certain speed to form a coating. Zindn cold galvanizing compound is like painting. It can be applied by brushing, roller coating, air spraying, airless spraying, etc. It is simple and efficient, does not require heating, and the coating dries quickly, and is not restricted by construction environment conditions. Sandblasting is used for surface treatment, and there is no wastewater discharge.

Zindn cold galvanizing compound is an environmentally friendly product. Its main component is 99.99% pure zinc powder. It does not contain heavy metals such as Pb, Cr, Hg, etc. It is environmentally friendly, safe, and non-toxic to the human body, and complies with the national environmental protection development policy. Compared with hot-dip galvanizing, which is not environmentally friendly, highly polluting, and energy-intensive, it is strictly controlled by the environmental protection department. Hot-spray zinc produces a large amount of zinc gas during manual operation, which is very harmful to the human body, and labor protection and occupational disease issues are prominent.

Zindn cold galvanizing compound has been applied to more than 2,000 national projects such as the CB05 section of the Hong Kong-Zhuhai-Macao Bridge, the Wujiagang Yangtze River Bridge, Xi'an North Station, Xinjiang wind power projects, Disney, and the new water supply network and water treatment facilities project of Urumqi Petrochemical Company. Among them, in projects such as Dingzhou Power Plant and Ninghai Power Plant, the field comparison with foreign brand coatings constructed in the same region and the same corrosion environment for 15 years has reduced 2 anti-corrosion overhauls and effectively solved the corrosion problems of bolt holes, friction surfaces, and welds. Hard-core technology creates value for customers and saves money.

At the same time, after 10 years of intensive research and development, Zindn, together with the team of Liu Liwei, a researcher at the Suzhou Institute of Nanotechnology, Chinese Academy of Sciences, and Suzhou Geruifeng, jointly released an innovative product developed in cooperation - the world's first graphene zinc made of pure thin graphene (also known as graphene zinc on the market). Graphene zinc is a low-VOC green and environmentally friendly product with excellent anti-corrosion performance, suitable for use in various harsh atmospheric environments. It also has good mechanical properties such as cracking resistance and impact resistance, as well as the advantages of friendly construction and good matching. The microstructure of graphene zinc presents a three-dimensional spherical network formed by ultra-pure and ultra-thin graphene and zinc powder. The protection mechanism comes from the multifunctional synergistic effect of barrier, cathodic protection, and inhibition of corrosion spread. The atomic layer multifunctional protection technology can simultaneously inhibit chemical and electrochemical corrosion, so that the paint film can achieve the ultimate long-term anti-corrosion performance, which is a redefined anti-corrosion product of Zindn. The mature technical R&D team has also enabled Zindn cold galvanizing compound anti-corrosion technology to be gradually optimized to overcome the problem of anti-corrosion of steel structures.

The world's first high-speed cross-sea railway bridge, the Quanzhou Bay Cross-sea Bridge of the Fuzhou-Xiamen High-speed Railway, which is well known in the industry and has a designed speed of 350 kilometers per hour, uses a graphene zinc steel structure anti-corrosion system. Simulation calculations and tests show that the innovatively researched "graphene zinc heavy anti-corrosion coating system" can achieve the goal of extending the anti-corrosion life of steel structures in marine corrosive atmospheric environments. The "graphene zinc heavy anti-corrosion coating system" will bring significant benefits to the construction of cross-sea bridges, saving more than 45% of investment, nearly 50 million yuan.

Energy conservation and environmental protection, promoting green development, and making the earth and human life better are the long-term development goals of Zindn. While launching the graphene zinc product, Zindn has transformed the vision of realizing "low-carbon blue sky" into action and simultaneously launched Zindn water-based graphene zinc. Water-based graphene zinc uses water as a solvent, and there is almost no VOC emission during construction, which is healthy for workers and friendly to the environment. At the same time, the low VOC of water-based meets the requirements of national environmental protection policies and regulations, reduces the trouble of emissions for construction companies and reduces taxes, and truly achieves long-term anti-corrosion!