Preparation and anti-icing performance of a photothermal self-healing superhydrophobic membrane

被引：0
作者：
Liu, Liming [1 ,2 ]
Chen, Shenglong [1 ,2 ]
Pan, Wei [1 ,2 ]
机构：
[1] School of Mechanical Engineering, Guangxi University, Nanning
[2] Key Laboratory of Manufacturing System and Advanced Manufacturing Technology, Guangxi University, Nanning
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2025年 / 42卷 / 03期
关键词：
fluorinated graphene; high strain; photo-thermal de-icing; self-cleaning; self-healing; superhydrophobic;
D O I：
10.13801/j.cnki.fhclxb.20240530.002
中图分类号：
学科分类号：
摘要：
To address challenges related to dynamic anti-wetting, mechanical durability, and chemical resistance due to UV oxidation faced by flexible superhydrophobic membrane materials in outdoor anti-icing applications, this paper presents a study on the fabrication and performance of a photothermal self-healing superhydrophobic membrane (PTHSHM). The membrane was prepared by fluorinated-graphene, TiO2 and SiO2 nanoparticles, and dispersing them in a thermoplastic polyurethane (TPU) matrix, followed by optimizing laser processing parameters to achieve the hydrophobic modification. The PTHSHM exhibited impressive performance in terms of dynamic anti-wetting, maintaining a water contact angle of 156.4° even after 1 000 cycles of stretching with a 400% strain. Moreover, it demonstrated efficient self-healing abilities, achieving a healing efficiency of 97.6% in 8 min under 0.4 W/cm−2 infrared illumination. Moreover, the membrane showed strong resistance to chemical damage, retaining a water contact angle of at least 155° after 10 cycles of oxygen plasma etching and repair. In anti-icing tests, the delayed freezing time and ice adhesion strength of PTHSHM is measured as 350 s and 55 kPa. A 20 μL ice droplet melted and rolled off in 77 s under 0.1 W/cm2 sunlight. Overall, the PTHSHM displays excellent mechanical and chemical durability, along with significant advantages in delaying ice formation and facilitating ice removal, making it a promising candidate for various outdoor anti-icing applications. © 2025 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：1429 / 1440
页数：11
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