APPLIED LASER, Volume. 44, Issue 5, 161(2024)
Preparation of Superhydrophobic Surface with Photothermal Absorption Capacity and Study on Anti-Icing/Deicing Performance
Anti-icing technology is of great significance to reduce the economic losses and casualties caused by freezing disasters. With its advantages of energy saving and environmental protection, photothermal de-icing technology has received extensive attention in the field of anti-icing. However, in practical applications such as aerospace and wind power generation, the development of photothermal deicing surfaces is still limited due to factors such as difficult preparation and low photothermal efficiency. Inspired by the shape of the compound eye of insects, an ultra-black light heat trap structure surface with excellent photothermal performance was prepared by femtosecond laser modification of aluminum alloy plate. The high depth (≥ 50 μm) pit array structure allowed light to be refracted multiple times inside the structure, which effectively improved the light and heat absorption capacity of the structural surface. The experimental results show that under a standard intensity of sunlight, the surface of the structure can be heated from 25 ℃ to 60.1 ℃ in 5 minutes, representing a remarkable temperature increase of up to 35.1 ℃. In addition, after fluorination modification, the frosting and freezing time of the pit array structure that can store air pockets delay of over 40 minutes when compared to the surface of bare aluminum, and the excellent superhydrophobicity of the surface can make the melted ice water slide off quickly. Compared with traditional photothermal de-icing technology, this strategy of constructing microstructures by femtosecond laser without composite photothermal materials provides a new idea for the preparation of photothermal anti-icing/deicing surfaces.
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Xiang Kefeng, Guo Chenghong, Song Yuegan, Li Guoqiang, Yang Yi, Zhuo Lijie. Preparation of Superhydrophobic Surface with Photothermal Absorption Capacity and Study on Anti-Icing/Deicing Performance[J]. APPLIED LASER, 2024, 44(5): 161
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Received: Jun. 13, 2023
Accepted: Dec. 13, 2024
Published Online: Dec. 13, 2024
The Author Email: Yuegan Song (songyuegan@swust.edu.cn)