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    Passive Deicing CFRP Surfaces Enabled by Super-Hydrophobic Multi-Scale Micro-Nano Structures Fabricated via Femtosecond Laser Direct Writing

    Year: 2022

    Journal: Nanomaterials, Volume 12, AUG

    Authors: Zhang, Zihan; Zhou, Jiakang; Ren, Yuqi; Li, Weihan; Li, Sheng; Chai, Nianyao; Zeng, Zhongle; Chen, Xiangyu; Yue, Yunfan; Zhou, Ling; Cheng, Yibing; Li, Shuxin; Wang, Xuewen

    Organizations: Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City [2021JJLH0058]; Guangdong Basic and Applied Basic Research Foundation [2020A1515110250, 2021B1515120041]; National Key Research and Development Program of China [2020YFA0715000]; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2022-KF-26, 2022-KF-9]; Fundamental Research Funds for the Central Universities [2020IVA068, 2021III007JC, WUT:2020IB001]

    Keywords: femtosecond laser structuring; CFRP; multi-scale micro-nano structure surface; super-hydrophobic; anti-icing application

    Carbon fiber reinforced plastic (CFRP) is the main material of aircraft skin. Preparing superhydrophobic anti-icing/deicing surface on the CFRP is of great importance for aircraft flight safety. In this work, a variety of multi-scale micro-nano structures were imprinted on CFRP by femtosecond laser processing, and a transition from hydrophilic to superhydrophobic CFRP was realized. After being optimized by different geometries and laser conditions, the water contact angle, which is tested at 24.3 degrees C and 34% humidity, increased from 88 +/- 2 degrees (pristine) to 149 +/- 3 degrees (100 mu m groove) and 153 +/- 3 degrees (80 mu m grid). A further anti-icing test at -10 degrees C (measured on the cooling platform) and 28% humidity showed that the freezing time was increased from 78 +/- 10 s (pristine) to 282 +/- 25 s (80 mu m grid). Most importantly, the tensile tests showed that the femtosecond laser processing method did not deteriorate the mechanical properties of CFRP. This work provides great significance for aircraft passive deicing technology.
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