Preparation of high strength, superhydrophilic silica anti-reflection and anti-reflection nanoparticles by surfactant-assisted acid-catalyzed sol-gel coating

Anti-reflection nanoparticle coating is a kind of anti-reflection coating. Anti-reflection coating has the characteristics of low density, small dielectric constant, adjustable refractive index and high thermal stability. It is used in optical and optoelectronic materials, optical filters, sensors, It has a wide range of applications in automotive glass, solar cells, and microelectronic integrated circuits. The sol-gel method is considered to be one of the effective preparation methods because of its simple operation, good coating uniformity and optical properties. "Surfactant-assisted acid-catalyzed sol-gel method to prepare high-strength super-hydrophilic silica anti-reflection and anti-reflection nanoparticle coating" is to use the sol-gel method to pull the coating film, and then quench it quickly at 700 ℃ for 200 s, A silica (SiO:) nanoparticle coating was prepared. The article introduces the specific experimental process of the whole preparation, and studies the influence of CTAB concentration, pulling speed, residence time and number of times of pulling the coating film on the transmittance.

The conclusion shows that the optimal coating conditions are: CTAB mass fraction 2.5%, pulling speed 100 mm/min, residence time 60 s, and pulling the coating once. After rapid quenching at 700℃ for 200s, the coating has a pencil hardness of 6H, a transmittance of 95.9%, and superhydrophilicity. Experiments also show that adding CTAB to SiO2: sol solution can improve the microstructure of SiO2: sol formed under acidic catalytic conditions through its interaction with species generated by partial hydrolysis of TEOS, thereby improving the transmittance and Hydrophilic. These results are of great significance to further optimize the coating performance to meet the practical requirements