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Development and Application of High-Performance Wind Turbine Blade Coatings
Currently, there is no unified reference standard for wind turbine blade anticorrosion systems in China. This is due to the composition of wind turbine blades and their special operating conditions. Wind turbine blades are made of glass fiber composite materials, while the base materials applicable to corrosion resistance standards such as ISO 9223 and ISO 12944 are all metals and cannot be directly referenced. Because wind turbine blades are often in very harsh corrosive environments and rotate at high speeds for many years, with the tip speed often exceeding 70 m/s, the corrosion conditions are different from those of steel structures, as clearly seen in the actual operation of various wind farms. Generally speaking, in addition to discoloration and powdering, wind turbine blades also experience wind erosion, pollution, wear, shedding, tearing, etc. The corrosive environment of wind turbine blades has the following characteristics: strong ultraviolet radiation, strong wind, wind and sand, sand and dust, hail impact and wear, corrosion from temperature changes of -30 to 50°C, high humidity and strong salt spray corrosion in southern or coastal areas, etc.
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