Flexible biomimetic materials with excellent photothermal performance and superhydrophobicity

摘要

Although thousands of superhydrophobic composites have been reported, it is still a challenge to develop eco-friendly superhydrophobic materials by a simple and low-cost strategy. Here, a paper-based super -hydrophobic material was prepared by carbon fiber powders and polydimethylsiloxane through a facile spraying method. This obtained material has excellent liquid resistance and self-cleaning properties, whose contact angle reaches 155 degrees. In addition, it possesses excellent photothermal conversion character-istics with a stable surface temperature of 73.4 degrees C and good water evaporation performance with an evaporation rate up to 1.08 kg/(m2.h) under one solar intensity (100 mW/cm2). Also, it has outstanding self-deicing performance, whose deicing time is 120 s earlier than that of the untreated surface under one solar intensity. An adaptability test shows this strategy of functional coatings can also be applied to other fiber substrates (coating paper, kraft paper, non-woven fabric, paulownia veneer, etc.). Overall, this superhydrophobic material has a promising application prospect in many fields such as waterproof pack-aging, deicing materials, water evaporation materials, etc.

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