Method for preparing porous silicon dioxide antireflective film with controllable refractive index
A silica and porous technology, applied in the field of preparation of porous silica anti-reflection films, can solve the problems of limited increase in film hardness and low film hardness, and achieve self-cleaning broadband anti-reflection, high chemical Good stability and self-cleaning effect
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[0024] The following examples are used to further illustrate the present invention, but should not limit the scope of protection of the present invention.
[0025] The following table lists a series of embodiments of the present invention and their test results: (The ratios in the table are molar ratios)
[0026] Preface
[0027] Example 2 illustrates the method of the present invention:
[0028] A method for preparing porous silica anti-reflection film with controllable refractive index, characterized in that the method includes the following steps:
[0029] ① Preparation of alkali catalytic solution:
[0030] The molar ratio of the raw materials of the alkali catalyst solution is: ethyl orthosilicate: anhydrous ethanol: deionized water: ammonia=1:27:2:0.9, add anhydrous ethanol, ethyl orthosilicate, water, ammonia, raw materials The total volume is 300 ml. SiO in 100 ml solution 2 The mass is 4.0 grams. Stir for 3 hours, put it in a 50°C oven after sealing, and aging f...
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