To provide a method for forming a super-water-repellent film capable of easily imparting excellent water repellency to a glass substrate and to provide a substrate having a super-water-repellent film obtained by the method.
The method for forming the transparent super-water-repellent film comprises applying a hydrophobic silica dispersion to the surface of a glass substrate, heat-treating the applied dispersion at a temperature equal to or higher than the glass transition temperature of the glass constituting the glass substrate and equal to or lower than the softening point of the glass, and thereafter hydrophobizing the heat-treated film to form the super-water-repellent film having a contact angle with water of 150 or larger. Further, the substrates having the transparent super-water-repellent film is a substrate having the super-water-repellent film obtained by applying a hydrophobic silica dispersion to the surface of a glass substrate, heat-treating the applied dispersion at a temperature equal to or higher than the glass transition temperature of the glass constituting the glass substrate and equal to or lower the softening point of the glass, and thereafter hydrophobizing the heat-treated film, wherein the contact angle with water of the super-water-repellent film is 150 or larger.
MASAKO YOSHIKUNI
SAKUMA KIYOSHI
| JP2001207123A | 2001-07-31 |
Takeshi Sekine
Atsushi Watanabe
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