METHOD OF OBTAINING SILICON DIOXIDE-BASED COATINGS Russian patent published in 2014 - IPC C03C17/25 B82B3/00 

FIELD: chemistry.

SUBSTANCE: method of coating obtaining includes sol-gel process of silicon tetraalkoxide, application of sol on glass, heating sample with coating in air atmosphere. Suspension of nanodiamond in water solution of SAS with concentration 0.04-0.06 mol/l is additionally introduced into suspension, with amount of nanodiamond relative to the total mixture constituting 0.3-0.5%, mixture is subjected to mechanical mixing for 5-10 min, then, to US-exposure at frequency 18-20 kHz for 20-30 min, after which float glass is submerged into prepared mixture, and then removed at rate 5-7 cm/min and subjected to drying and thermal processing at 450-470°C for 20-30 min with further cooling. As SAS used are cation-active substances, in particular, quaternary ammonium salts of cetyltrimethylammonium bromide, or octadecylammonium chloride, or trimethylhexadecylammonium chloride type. Method ensures glass resistance to scratching, increase of microhardness by more than 200% and light permeability at level 80-85%.

EFFECT: creation of coating for sheet glass, possessing higher parameters of microhardness and resistance to scratching without substantial loss of transparency in visible part of spectrum.

2 cl, 1 tbl, 2 ex