Journal of Bionic Engineering

September 2019, Volume 16, Issue 5, pp 794–805| Cite as

Weilan Liu,Haifeng Chen,Yizhou Shen,Zhengwei Wu

1.Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)Nanjing Tech University (NanjingTech),Nanjing,China

2.Department of Materials Chemistry, Qiuzhen School,Huzhou University,Huzhou,China

3.College of Materials Science and TechnologyNanjing University of Aeronautics and Astronautics,Nanjing,China

Abstract

This work is focused on the development of a facile strategy to fabricate superhydrophobic coatings, which are characterized with lower water freezing temperature and lower ice adhesion. First, a kind of polyacrylic acid (PAA) based resin material is synthesized as the coating-matrix. Then the functionally-modified SiO2 nanoparticles are added to regulate the surface morphology for obtaining the ideal superhydrophobicity. The as-synthesized resin coatings possess strong bonding strength with metal substrate, and the surface hierarchical morphologies (10 wt% SiO2 nanoparticles) induce the robust superhydrophobicity with a high water contact angle of 152°. Also, the superhydrophobic coatings are endowed with high icephobicity, and the freezing temperature of reference water droplet is reduced to −20.33°C comparing with that (−13.83°C) on the coatings without additive nanoparticles. Furthermore, the ice adhesion strength on the superhydrophobic coatings is only 250 kPa, exhibiting the great ability of ice repellence.

Keywords

bioinspired surface coatings superhydrophobicity icing temperature ice adhesion 

Full text is available at :

https://link.springer.com/article/10.1007/s42235-019-0097-1