Silicon dioxide anti-reflection film for surface ultrafast hydrophobic treatment and preparation method thereof
A silica and hydrophobic treatment technology, applied in optics, instruments, optical components, etc., to achieve the effects of easy operation, improved abrasion resistance, and simple process
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[0020] Example 1
[0021] (1) First, add absolute ethanol (analytical purity), deionized water, ammonia water and ethyl orthosilicate (analytical purity) to the reaction vessel at a molar ratio of 1:3.25:37.6:0.17, and react at a constant temperature at 25°C. Take it out after 2 h, then place it in a closed glass container and age it in a constant temperature water tank at 30°C for 9 days. The mass concentration of silica in the obtained silica sol was 3%.
[0022] (2) Dip the cleaned and dried K9 glass into the silica sol, and use the dipping-lifting method to cover the surface of the K9 glass with a layer of flat silica sol at a pulling speed of 100 mm / min, and then Heat treatment at 160°C for 8 h, and cool to room temperature to obtain a silica antireflection film.
[0023] (3) Add hydrogen-containing silicone oil with a hydrogen content of 1.5% and Kastredt catalyst to n-hexane and stir and mix uniformly at room temperature to obtain a surface treatment agent. The mass percenta...
Example Embodiment
[0025] Example 2
[0026] Since the process conditions for preparing the silica antireflection film in steps (1) and (2) of this embodiment are the same as those in embodiment 1, they are omitted.
[0027] (3) Add hydrogen-containing silicone oil with a hydrogen content of 1.5% and Kastredt catalyst to n-hexane and stir and mix uniformly at room temperature to obtain a surface treatment agent. The mass percentage concentration of hydrogen-containing silicone oil in the surface treatment agent is 0.5%. Kastredt The concentration of the catalyst is 100 ppm based on the mass of the hydrogen-containing silicone oil;
[0028] (4) After immersing the obtained silica antireflection film into the surface treatment agent for 2 minutes, pull it away from the surface treatment agent at a speed of 100 mm / min, and then heat and dry it at 120°C for 120 minutes.
Example Embodiment
[0029] Example 3
[0030] Since the process conditions for preparing the silica antireflection film in steps (1) and (2) of this embodiment are the same as those in embodiment 1, they are omitted.
[0031] (3) Add hydrogen-containing silicone oil with a hydrogen content of 1.5% and Kastredt catalyst into n-hexane and stir and mix uniformly at room temperature to obtain a surface treatment agent. The mass percentage concentration of hydrogen-containing silicone oil in the surface treatment agent is 2.5%. Kastredt The concentration of the catalyst is 250 ppm based on the mass of the hydrogen-containing silicone oil;
[0032] (4) After immersing the obtained silica antireflection film in the surface treatment agent for 5 minutes, pull it away from the surface treatment agent at a speed of 50 mm / min, and then heat and dry it at 200°C for 180 minutes.
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