A robust superhydrophobic PDMS@ZnSn(OH) 6 coating with under-oil self-cleaning and flame retardancy

Some drawbacks such as lack of durability, requirement for high-cost fluorosilane modification, and complicated fabrication processes have limited the practical applications of superhydrophobic coatings for several years. In this work, we provide a novel method to fabricate a robust superhydrophobic...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2017, Vol.5 (43), p.22761-22771
Main Authors: Long, Mengying, Peng, Shan, Deng, Wanshun, Miao, Xinrui, Wen, Ni, Zhou, Qiannan, Yang, Xiaojun, Deng, Wenli
Format: Article
Language:English
Subjects:
Abrasion
Abrasives
Adhesive bonding
Chemical bonds
Cleaning
Dodecane
Durability
Fabrication
Hydrophobic surfaces
Hydrophobicity
Particulates
Polydimethylsiloxane
Silicone resins
Substrates
Surface energy
Surface properties
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Summary:Some drawbacks such as lack of durability, requirement for high-cost fluorosilane modification, and complicated fabrication processes have limited the practical applications of superhydrophobic coatings for several years. In this work, we provide a novel method to fabricate a robust superhydrophobic coating without pre-modification by pressing ZnSn(OH) 6 (ZHS) particles into polydimethylsiloxane (PDMS) solution, and then curing. PDMS used in this work is not only a low surface energy material, but also an adhesive to enhance the bonding force between particles and substrates. The PDMS@ZHS coating (ZHS particles coated on PDMS) is also superhydrophobic when it is immersed into dodecane, and shows excellent self-cleaning in air and oil environments. After undergoing serious chemical corrosion and mechanical abrasion, the superhydrophobicity of the coating remained well. For different kinds of substrates, this coating can be covered and repels water as well. Owing to the excellent flame-retardancy of ZHS particles, PDMS@ZHS coated paper displays excellent flame retardancy in limiting oxygen index (LOI), vertical flame, and cone calorimeter tests. We believe that this simple, environmentally friendly, and versatile fabrication of the PDMS@ZHS coating has excellent real-life applications.
ISSN:2050-7488
2050-7496
DOI:10.1039/C7TA06190K