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Your search keyword '"Non-fluorinated coatings"' showing total 3 results
Start Over Descriptor "Non-fluorinated coatings"
3 results on '"Non-fluorinated coatings"'

2. Facile synthesis of fluorine-free, hydrophobic, and highly transparent coatings for self-cleaning applications.

Author

Hamdi, Abderrahmane, Chalon, Julie, Laurent, Pascal, Dodin, Benoit, Dogheche, Elhadj, and Champagne, Philippe

Subjects
SUPERHYDROPHOBIC surfaces, HYDROPHOBIC compounds, GLASS coatings, HYDROPHOBIC surfaces, CONTACT angle, SURFACE coatings, THERMOCYCLING
Abstract

Non-fluorinated coatings have recently emerged as a new approach to avoid contamination on transparent surfaces. This research work concerns the synthesis of highly transparent, hydrophobic, durable, and self-cleaning coatings as an alternative to fluorine-based coatings used on glass. The developed coating is produced by a chemical route (sol–gel method) using two silica-based precursors, hexamethyldisilazane, and tetraethoxysilane (HMDS/TEOS). Then, the prepared Gel HMDS/TEOS was deposited on glass slides by the dip-coating technique. Afterward, the effects of mechanical durability, water-drop testing, thermal cycling testing, and aging times on the hydrophobicity of the gel were analyzed. The properties of the coating were characterized by optical microscopy, scanning electron microscopy, UV–VIS-NIR spectrophotometry, and contact angle measurement. The results show that the organic modification of the gel by trimethylsilyl (–Si–(CH3)3) groups leads to a homogeneous and a hydrophobic surface. Sufficient dilution of this gel with ethanol has been found to provide a highly transparent coating without losing its hydrophobic property. In addition, the robust and durable coating exhibits high self-cleaning performance suitable for various industrial applications. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
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3. Facile synthesis of fluorine-free, hydrophobic, and highly transparent coatings for self-cleaning applications

Author

Pascal Laurent, Julie Chalon, Abderrahmane Hamdi, Elhadj Dogheche, Benoit Dodin, Philippe Champagne, L'Institut de Recherche Technologique (IRT) de la filière Ferroviaire (IRT Railenium), Université Polytechnique Hauts-de-France (UPHF), Laboratoire des Matériaux Céramiques et Procédés Associés - EA 2443 (LMCPA), Université Polytechnique Hauts-de-France (UPHF)-INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), SNCF : Innovation & Recherche, SNCF, Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520 (IEMN-DOAE), INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France)-Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Optoélectronique - IEMN (OPTO - IEMN), INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA)

Subjects
Materials science, Trimethylsilyl, Scanning electron microscope, Hydrophobicity, chemistry.chemical_element, 02 engineering and technology, Temperature cycling, engineering.material, 010402 general chemistry, 01 natural sciences, law.invention, Contact angle, chemistry.chemical_compound, [SPI]Engineering Sciences [physics], Colloid and Surface Chemistry, Optical microscope, Coating, law, Spectrophotometry, medicine, [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], medicine.diagnostic_test, Surfaces and Interfaces, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, chemistry, Chemical engineering, engineering, Fluorine, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Non-fluorinated coatings, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Transparent surfaces, 0210 nano-technology, Self-cleaning
Abstract

International audience; Non-fluorinated coatings have recently emerged as a new approach to avoid contamination on transparent surfaces. This research work concerns the synthesis of highly transparent, hydrophobic, durable, and self-cleaning coatings as an alternative to fluorine-based coatings used on glass. The developed coating is produced by a chemical route (sol–gel method) using two silica-based precursors, hexamethyldisilazane, and tetraethoxysilane (HMDS/TEOS). Then, the prepared Gel HMDS/TEOS was deposited on glass slides by the dip-coating technique. Afterward, the effects of mechanical durability, water-drop testing, thermal cycling testing, and aging times on the hydrophobicity of the gel were analyzed. The properties of the coating were characterized by optical microscopy, scanning electron microscopy, UV-VIS-NIR spectrophotometry, and contact angle measurement. The results show that the organic modification of the gel by trimethylsilyl (-Si-(CH3)3) groups leads to a homogeneous and a hydrophobic surface. Sufficient dilution of this gel with ethanol has been found to provide a highly transparent coating without losing its hydrophobic property. In addition, the robust and durable coating exhibits high self-cleaning performance suitable for various industrial applications.

Published
2021
Full Text
View/download PDF

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