Study of the possibility of forming a hydrophobic and anti-foil coating on the substrate of optical glass based on organosilicon compounds
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https://doi.org/10.54939/1859-1043.j.mst.78.2022.101-107Keywords:
Polymethylhydrosiloxane; Tetraethoxysilane; Optical glass; Hydrophobic coating.Abstract
Protective films for optical glasses based on silicon-based compounds were synthesized by the sol-gel method from polymethylhydrosiloxane (PMHS) and tetraethoxysilane (TEOS) on an alkaline catalyst. The hydrophobic and anti-mould properties of the films were evaluated by measuring the wetting angle of droplets and mold culture. The influence of the film on the characteristics of the glass was evaluated by determining the optical transmission using spectroscopy and determining the morphology of the glass surface after coating by AFM. The results obtained show that the coating film practically does not change the optical transmittance of the optical glass. Water resistance and mold resistance increased significantly at a contact angle of more than 116.23°, and mycelium grew only after 39 days of cultivation under favorable conditions.
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