Recently, the new “graphene heavy-duty anti-corrosion coating†project jointly approved by the State Grid Ningbo Power Supply Company and the Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences was held in Ningbo, and more than ten well-known domestic experts were present.
According to reports, the project through the improvement of the paint, put on the "protective outerwear" for the steel in the coastal working environment, the service life increased by 6 years, cracking the marine equipment anti-corrosion "difficult". Up to now, the project has been piloted in the Cixi 220 kV Chongshou Substation in Ningbo, the 220 kV Kunting Substation in Beilun, the 220 kV and the 500 kV Tower in Yongtaiwen.
In November last year, the improved new "graphene modified heavy-duty anti-corrosion coating" was applied to the world's highest transmission tower of 380 meters under construction. The total amount of coatings is 27 tons and the coating area is 32,000 square meters. “The new coatings not only slow down the corrosion of power facilities, but also ensure that the internal structure of power equipment is not damaged and prolong the life of transmission towers.†Zhou Kaihe, director of Ningbo Power Supply Company's Shuangchuang Center.
Ningbo is located in the coastal area, and the number of chemical plants near the transmission line is high, the content of sulfur in the air is high, and the influence of humid sea breeze is large, resulting in corrosion of coastal transmission towers three to five times faster than inland areas, greatly increasing maintenance costs. It also leads to unnecessary grid operation risks. The new "graphene modified heavy anti-corrosion coating" was successfully developed to fill the technical gap of domestic grid anti-corrosion coatings. It is reported that in order to adapt to the island environment with high humidity and salinity, slow down the corrosion of metal objects and extend the life of the tower, Ningbo Company and the Institute of Materials Technology and Engineering of the Chinese Academy of Sciences jointly established the joint experiment of new materials application in the grid last September. room".
At present, the "graphene modified heavy anti-corrosion coating" developed by the laboratory has been identified by the results of the China Society for Corrosion and Protection. The key technical indicators have a salt spray life of more than 9,000 hours. At the same time, this is the first time in the world to complete the entire chain of graphene modified heavy-duty anti-corrosion coating engineering, including material development, natural environment assessment, engineering demonstration and even large-scale production and application.
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