UV-Resistant and Superhydrophobic Self-Cleaning Surfaces Using Sol-Gel Processes

Inorganic superhydrophobic, low-surface energy silica coatings have been prepared using sol-gel processing with tetraethoxysilane and trifluoropropyltrimethoxysilane as precursors. When trifluoropropyltrimethoxysilane was incorporated into silica, hydrophobic trifluoropropyl groups were present on t...

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Bibliographic Details
Published inJournal of adhesion science and technology Vol. 22; no. 15; pp. 1907 - 1917
Main Authors Xiu, Yonghao, Hess, Dennis W., Wong, C. P.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.01.2008
Subjects
SOL-GEL
SUPERHYDROPHOBICITY
TEOS
TFPS
THERMAL STABILITY
UV STABILITY
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Summary:Inorganic superhydrophobic, low-surface energy silica coatings have been prepared using sol-gel processing with tetraethoxysilane and trifluoropropyltrimethoxysilane as precursors. When trifluoropropyltrimethoxysilane was incorporated into silica, hydrophobic trifluoropropyl groups were present on the surface, yielding hydrophobicity. When combined with the rough surfaces from a sol-gel process, superhydrophobic surfaces can be generated. The surfaces were characterized by contact angle measurements, scanning electron microscopy and atomic force microscopy. Thermogravimetric analysis was used to determine the thermal stability of the as prepared silica materials. In order to measure the surface hydrophobicity retention of the silica surfaces under UV irradiation, UV accelerated aging tests were conducted according to ASTM D 4329.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0169-4243
1568-5616
DOI:10.1163/156856108X320050