Method for producing glass sheet coated with titanium oxide thin film
A technology of titanium oxide film and manufacturing method, which is applied in the direction of coating, etc., and can solve the problems of reduced productivity, reduced performance of titanium oxide photocatalyst, and reduced catalytic effect
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Embodiment 1
[0107] Soda-lime glass with a length of 1000 mm, a width of 1000 mm, and a thickness of 4 mm was used as the raw material. This soda-lime glass is glass containing 10% by weight of sodium as an alkali metal, and has a softening temperature of 720°C to 730°C as measured in accordance with ASTM C 338-57. When the surface compressive stress of the surface of the soda lime glass substrate on the tin diffusion layer side was measured in accordance with JIS R3222, it was 6.3 MPa. For both sides of the soda-lime glass, wash the surface of the glass substrate with a specified acetic acid aqueous solution and a sponge, and then wash it with water, and then wash the surface of the glass substrate with an aqueous solution diluted with water and a sponge. . Thereafter, after rinsing the surfactant with a large amount of water, the moisture is removed with an air stream.
[0108] Stand the cleaned glass substrate up against the wall, and apply a sol containing titanium oxide particles on...
Embodiment 2
[0121] As in Example 1, the same sol containing titanium oxide fine particles as in Example 1 was coated on the cleaned and dried soda lime glass substrate. The cleaned glass substrate was erected against the wall, and the surface of the glass substrate opposite to the tin diffusion layer was heated in advance with an infrared heater until the surface temperature reached about 35°C. Using the same conditions as in Example 1, a sol containing titanium oxide fine particles was coated on the surface of the heated glass substrate with an air spray gun. That is, the air pressure supplied to the spray gun is set to 0.2MPa (the pressure difference from the atmospheric pressure is about 0.1MPa), and the coating amount per unit time sprayed from the nozzle is set to 5ml / min. , while keeping a certain distance, apply while moving in the horizontal direction. When reaching the left end or the right end, move the position in the up and down direction to coat the whole. In this way, fine...
Embodiment 3
[0125] As in Example 1, the same sol containing titanium oxide fine particles as in Example 1 was coated on the cleaned and dried soda lime glass substrate. For coating, a commercially available ultrasonic sprayer for humidification was used. After heating the temperature of the sol in the cylinder of this nebulizer to 90°C, it was spray-coated onto a glass substrate whose surface temperature was 23°C. Coating was carried out from a position 20 cm away from the glass substrate so that mist droplets evenly adhered to the glass substrate. After adhering to the glass substrate, dry it with a drier. The above-mentioned coating operation was also the same as in Example 1. Although there was a slight fogging phenomenon immediately after coating, it became almost transparent after drying. Furthermore, coloring thought to be due to interference color was not observed before and after drying.
[0126] The thus obtained glass plate on which the coating film was formed was heat-treate...
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Abstract
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