摘要
Ice formation and accretion exert a negative effect, creating an urgent demand for effective anti-icing/deicing methods. Inspired by the natural hydrophobic structure of wheat leaves, a three-step strategy, involving laser etching, carbon nanotubes spraying, and polydimethylsiloxane modification, was proposed and the process intensification was systematically investigated both by experiment and numerical simulation. It suggested that this multifunctional composite presented integrated anti-icing, photothermal deicing and electrothermal deicing functions, realizing real-time anti-icing/deicing. It achieved a water contact angle of 146° and an ice adhesion force of as low as 0.83 N, ensuring that the icing delay time was significantly prolonged from 81 s to 1203 s. The composite reached to ca. 62 °C under 1.8 sun illumination, and the photothermal deicing time was reduced by ca. 80%. The surface temperature attained ca. 89 °C at as low as 1.8 V, with the electrothermal deicing efficiency enhancing by ca. 50%. After 20 freeze-thaw cycles and ultraviolet irradiation, no obvious degradations in the surface hydrophobicity and photothermal/electrothermal conversion performances were observable. Meanwhile, this composite possessed excellent self-cleaning capability to resist the dust contamination. The experimental results were also confirmed by numerical simulation, and the simulated results were in high accordance with the experiment data. The process intensification during anti-icing/deicing was found, and the low ice adhesion force was responsible for the process intensification. Integrating the advantages of passive anti-icing and active photothermal/electrothermal deicing, this composite overcomes the drawbacks of conventional anti-icing/deicing technologies, such as high energy consumption, single function, and poor stability, etc., presenting promising prospect for the anti-icing/deicing of Al-based material of automotive vehicle.
危险品化学品经营许可证（带存储）