Glass, cover glass produced using same, and method for producing glass
A technology of protective glass and manufacturing method, applied to the manufacture of glass and glass, and the field of protective glass for touch screen displays
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Embodiment 1
[0110] Hereinafter, the present invention will be described in detail based on examples. It should be noted that the following embodiments are merely examples. The present invention is not limited in any way by the following examples.
[0111] Tables 1 to 6 show examples (sample Nos. 1 to 42) of the present invention. In the table, [not] means not measured.
[0112] [Table 1]
[0113] [Table 1]
[0114]
[0115] [Table 2]
[0116] [Table 2]
[0117]
[0118] [table 3]
[0119] [table 3]
[0120]
[0121] [Table 4]
[0122] [Table 4]
[0123]
[0124] [table 5]
[0125] [table 5]
[0126]
[0127] [Table 6]
[0128] [Table 6]
[0129]
[0130] Sample Nos. 1 to 42 were prepared as follows. First, glass raw materials prepared to have the glass compositions shown in the table were put into a platinum crucible, melted at 1600° C. for 24 hours, flowed out onto a carbon plate, and formed into a flat plate. Next, for each of the obtained samples, density...
Embodiment 2
[0143] The materials of sample Nos. 4 and 5 described in Table 1 were melted in a test melting furnace to obtain molten glass, and glass plates with a plate thickness of 0.3 mm were formed by the overflow down-draw method. As a result, the warpage of the glass plate was 0.075% or less, the warp (WCA) was 0.15 μm or less (cut fh: 0.8 mm, fl: 8 mm), and the surface roughness (Ry) was Below (cutoff λc: 9 μm). During molding, properly adjust the speed of the traction roller, the speed of the cooling roller, the temperature of the heating device, the temperature of the molten glass, the flow rate of the molten glass, the pulling speed of the plate, the rotation speed of the stirrer, etc., so as to adjust the surface quality of the glass plate. In addition, "warpage" means the value measured using the gap measuring instrument described in JISB-7524 by placing a glass plate on an optical fixing plate. "Curvature" refers to the value obtained by measuring WCA (filter centerline curv...
Embodiment 3
[0145] Glass No. 5 prepared in Example 2 was processed into a size of 100 mm×100 mm×0.3 mm to prepare a glass sample. The glass sample was immersed in 80° C.-5 wt % HCl for 10 minutes to modify the surface to be porous. Next, the acid-treated glass sample was immersed in an aqueous ethanol solution for 10 minutes and washed.
[0146] Next, titanium dioxide (anatase) particles with an average particle diameter of 5 nm were dispersed in 2-propanol solution at 2 wt %, and the glass sample was immersed in the obtained solution for 5 minutes to attach the titanium particles to the surface of the glass sample.
[0147] Then, the glass sample was placed in an annealer maintained at 500° C., and after being heat-treated for 2 hours, it was taken out to obtain a glass sample having titanium dioxide particles supported on its surface. By irradiating the sample obtained in this way with ultraviolet rays, organic matter can be decomposed by utilizing the photocatalytic function of the ti...
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Abstract
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