Method for forming super-hydrophilic anti-reflective composite coating on glass substrate
A glass substrate and composite coating technology, applied in the field of nanomaterial preparation, can solve the problems of defects, long-term superhydrophilic performance and few reports
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[0036] Example 1
[0037] To prepare a sol solution containing silica particles:
[0038] (1) Combine 22.3mL of tetraethoxysilane, 22.3mL of absolute ethanol, 1.8mL of water and different volumes (5×10 -2 mL, 5×10 -3 mL and 5×10 -4 mL) of concentrated hydrochloric acid (mass fraction of 37%) were mixed in a double-necked flask, stirred at a temperature of 60°C for 90 minutes, and then cooled to room temperature to obtain three mixed solutions;
[0039] (2) Add 7.2 mL of concentrated hydrochloric acid (with a mass fraction of 37%), 0.4 mL of water and 46.6 mL of ethanol to the three mixed solutions at room temperature obtained in step (1), and stir at room temperature for 15 minutes. Aging for 3 hours at a temperature of 50°C; add cetyltrimethylammonium bromide to the three aging solutions to make the three aging solutions of cetyltrimethylammonium bromide The mass fraction in both is 2.5%, and the mixture is stirred at room temperature for 1 hour to prepare a sol solution containing...
Example Embodiment
[0041] Example 2
[0042] To prepare a sol solution containing silica particles:
[0043] (1) Combine 22.3mL of tetraethoxysilane, 22.3mL of absolute ethanol, 1.8mL of water and 5×10 -3 mL of concentrated hydrochloric acid (37% by mass) was mixed in a double-necked flask, stirred for 90 minutes at a temperature of 60°C, and then cooled to room temperature to obtain a mixed solution;
[0044] (2) Add a certain volume (5mL, 7.2mL or 10mL) of concentrated hydrochloric acid (mass fraction of 37%), 0.4mL of water and 46.6mL of ethanol to the mixed solution at room temperature obtained in step (1), at room temperature Stir for 15 minutes, and then perform aging at 50°C for 3 hours; add cetyltrimethylammonium bromide to the aging solution to make the cetyltrimethylammonium bromide solution after aging The mass fraction of SiO 2 is 2.5%, and the mixture is stirred at room temperature for 1 hour to prepare a sol solution containing silica particles for preparing a coating.
[0045] The charac...
Example Embodiment
[0046] Example 3
[0047] To prepare a sol solution containing silica particles:
[0048] (1) Combine 22.3mL of tetraethoxysilane, 22.3mL of absolute ethanol, 1.8mL of water and 5×10 -3 mL of concentrated hydrochloric acid (mass fraction of 37%) was mixed in a double-necked flask, stirred at 30°C, 60°C, and 90°C for 90 minutes, and then cooled to room temperature to obtain three mixed solutions;
[0049] (2) Add 7.2 mL of concentrated hydrochloric acid (37% by mass), 0.4 mL of water and 46.6 mL of ethanol to the three mixtures at room temperature obtained in step (1), and stir at room temperature for 15 minutes, then Aging is carried out at a temperature of 50°C for 3 hours; add cetyltrimethylammonium bromide to the three aging solutions to make the mass of cetyltrimethylammonium bromide in the aging solution The fractions were 2.5%, and the mixture was stirred at room temperature for 1 hour to prepare sol liquids containing silica particles for coating.
[0050] The characterization...
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