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A non-fluorine method for preparing multifunctional robust superhydrophobic coating with applications in photocatalysis, flame-retardance, and oil-water separation

Abstract

Superhydrophobic coatings (SHC) have extremely promising, valuable, and practical applications in various indoor and outdoor scopes. However, many artificial SHC still suffered some problems such as requirement of toxic and expensive reagents, weak mechanical durability or chemical stability, complicated fabrication steps, etc. In order to cope with the versatile, complex, and severe environment, developing multifunctional SHC is the main developing stream in recent years. Here in this paper, we designed and fabricated a SHC consisted of PDMS-grafted-Mg(OH)2 (PDMS-MH), PDMS-grafted-TiO2 (PDMS-TiO2), and epoxy. The original hydrophilic MH and TiO2 particles were covalently grafted with PDMS through heating and UV illumination method, respectively. The final coatings presented omnipotent properties. The coated fabric showed superior mechanically durable and chemically stable superhydrophobicity, which could withstand recycled abrasion treatment under 200 g weight for at least 55 times. More importantly, it also achieved more protective abilities such as self-cleaning, anti-fouling, extremely stable underoil superhydrophobicity, photocatalysis, and self-quenched flame-retardance. Besides, the coated stainless steel mesh not only could highly efficiently separate oil-water mixtures under room temperature, but also strong acid/strong alkali/hot water-oil mixtures. Thus it is believed that this multifunctional SHC not only fulfill real-life requirements, but also showed various highly potential applications in many fields.

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Publication details

The article was received on 13 Mar 2019, accepted on 14 Apr 2019 and first published on 15 Apr 2019


Article type: Paper
DOI: 10.1039/C9NJ01318K
Citation: New J. Chem., 2019, Accepted Manuscript

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    A non-fluorine method for preparing multifunctional robust superhydrophobic coating with applications in photocatalysis, flame-retardance, and oil-water separation

    B. Wang, Y. Wang, X. Li, K. Zhang, C. Liu and P. Shan, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ01318K

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