Facile Fabrication of Fluorine-Free, Anti-Icing, and Multifunctional Superhydrophobic Surface on Wood Substrates

Polymers

Xinxiang Zhang¹  Zehao Ding¹  Mengting Cao¹  Hanxian Chen¹  Wensheng Lin¹  Mingwei Tang²  Shuang Cai² 

[1] College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China;Department of Chemical Engineering and Food Science, Hubei University of Arts and Science, 296 Longzhong Road, Xiangyang 441053, China;

关键词: wood;    multifunctionality;    poly(methylhydrogen)siloxane (PMHS);    wettability;    anti-icing;   

DOI  :  10.3390/polym14101953

来源: DOAJ

【 摘 要 】

Building superhydrophobic protective layers on the wood substrates is promising in terms of endowing them with multiple functions, including water-repellent, self-cleaning, anti-icing functions. In this study, multifunctional superhydrophobic wood was successfully fabricated by introducing SiO₂ sol and superhydrophobic powder (PMHOS). The SiO₂ sol was prepared using tetraethoxysilane as a precursor and ethanol was used as the dispersant. The PMHOS was synthesized using poly(methylhydrogen)siloxane (PMHS) and ethanol. As a result, the obtained superhydrophobic wood had a water contact angle (WCA) of 156° and a sliding angle (SA) of 6° at room temperature. The obtained superhydrophobic wood exhibited excellent repellency toward common liquid (milk, soy sauce, juice, and coffee). The superhydrophobic layer on the wood surface also exhibited good durability after a series of mechanical damages, including finger wiping, tape peeling, knife scratching, and sandpaper abrasion. In addition, the obtained superhydrophobic wood showed excellent anti-icing properties.

【 授权许可】

Unknown