Durable Design of Superhydrophobic Coatings with TiO_(2)Particles and Al_(2)O_(3)Whiskers for the Enhanced Anti-icing Performance  

作　　者：Weilan Liu Kunlong Li Yizhou Shen Huanyu Zhao Yaru Ni Zeyu Cai Lingfeng Zhao Zhen Wang 

机构地区：[1]Institute of Advanced Materials(IAM),School of Materials Science and Engineering,Nanjing Tech University,Nanjing,211816,China [2]College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing,211100,China [3]Aviation Industry Aerodynamics Research Institute of China,Shenyang,110000,China

出　　处：《Journal of Bionic Engineering》2024年第3期1360-1374,共15页仿生工程学报（英文版）

基　　金：financial support from the National Natural Science Foundation of China(No.52075246,U2341264);Natural Science Foundation of Jiangsu Province(No.BK20211568);International Cooperation Project of Jiangsu Province(No.BZ2023045);National Science and Technology Major Project of China(No.J2019-III-0010-0054);Fundamental Research Funds for the Central Universities(No.NE2022005);Liaoning Provincial Key Laboratory of Aircraft Ice Protection(No.XFX20220301);Basic Research Project of Suzhou(No.SJC2022032)。

摘　　要：Superhydrophobic coatings with high non-wetting properties are widely applied in anti-icing applications.However,the micro-nanostructures on the surfaces of superhydrophobic coatings are fragile under external forces,resulting in reduced durability.Therefore,mechanical strength and durability play a crucial role in the utilization of superhydrophobic materials.In this study,we employed a two-step spraying method to fabricate superhydrophobic FEVE-based coatings with exceptional mechanical durability,utilizing fluorinated TiO_(2)nanoparticles and fluorinated Al_(2)O_(3)microwhiskers as the fillers.The composite coating exhibited commendable non-wetting properties,displaying a contact angle of 164.84°and a sliding angle of 4.3°.On this basis,the stability of coatings was significantly improved due to the interlocking effect of Al_(2)O_(3)whiskers.After 500 tape peeling cycles,500 sandpaper abrasion tests,and 50 kg falling sand impact tests,the coatings retained superhydrophobicity,exhibiting excellent durability and application capability.Notably,the ice adhesion strength on the coatings was measured at only 65.4 kPa,while the icing delay time reached 271.8 s at-15℃.In addition,throughout 500 freezing/melting cycles,statistical analysis revealed that the superhydrophobic coatings exhibited a freezing initiation temperature as low as-17.25℃.

关 键 词：Superhydrophobic coatings ANTI-ICING Mechanical durability 

分 类 号：TQ63[化学工程—精细化工] TB30[一般工业技术—材料科学与工程]