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Study on Lubrication-Photothermal Synergistic Deicing of CNT Coating on Wind Turbine Blades

Aiming at the problem of wind turbine blades' icing, a carbon nanotube composite photothermal coating with both active deicing and passive anti-icing properties was prepared by the spin-coating method. The results indicate that the lubricating coating doped with carbon nanotubes can effectively delay freezing time and reduce ice adhesion strength. The spin-coated 6-layer coating can achieve the best photothermal conversion performance and consume relatively few nanomaterials to maximize the capture of energy in near-infrared light. Under the irradiation of near-infrared light (808 nm), the surface temperature of the coating can reach 97.1°C, which has good photothermal conversion performance. The antifrosting ability of carbon nanotube nanocomposite photothermal coating is related to the content of lubricating oil, and the defrosting performance is related to the content of carbon nanotubes in the coating. Adopting the lubrication-photothermal synergistic deicing method can greatly shorten the deicing time, which is compared with only using photothermal deicing from 392 s to 51 s.