Method for preparing high-hardness antireflection film on basis of hollow silicon dioxide

[0030] At room temperature, dissolve 0.12g of polyacrylic acid in 6ml of ammonia water, mix well and add to the rotor, slowly add a mixed solution of 84ml of 2-isopropoxyethanol and 36ml of methanol under stirring, and place it in a water bath at 30°C after the addition is complete After vigorously stirring for 10 minutes, 2ml tetraethyl orthosilicate was added dropwise in 5 times (0.4ml each time), the time interval was 10min, and the mixed solution was sealed and vigorously stirred for 10h to obtain a 60nm hollow SiO 2 Nanoparticle sol. Stir the above sol in a fume hood, and stop stirring when the pH of the solution drops to 7. After the weight percentage of the sol was adjusted to 1.5 wt%, it was recorded as the sol to be coated.

[0031] Put 2 × 10cm glass substrates (light transmittance 92%) in the sequence of 10% hydrochloric acid and 10% NaOH solution for ultrasonic treatment for 70min, the ultrasonic power is 60W, and then use Ultrasonic washing with water ethanol and d

[0033] At room temperature, dissolve 0.12g of polyacrylic acid in 6ml of ammonia water, mix well and add to the rotor, slowly add a mixed solution of 84ml of 2-isopropoxyethanol and 36ml of methanol under stirring, and place it in a water bath at 30°C after the addition is complete After stirring vigorously for 10 minutes, 0.2ml tetraethyl orthosilicate was added dropwise in 5 times with a time interval of 10 minutes. After the mixed solution was sealed and stirred vigorously for 10 hours, a hollow SiO with a thickness of 54.5nm was obtained. 2 Nanoparticle sol. Stir the above sol in a fume hood, and stop stirring when the pH of the solution drops to 7. After the weight percentage of the sol was adjusted to 1.5 wt%, it was recorded as the sol to be coated.

[0034] Put 2 × 10cm glass substrates (light transmittance 92%) in the sequence of 10% hydrochloric acid and 10% NaOH solution for ultrasonic treatment for 70min, the ultrasonic power is 60W, and then use Ultrasonic washing