Hybrid Nano-Composite Sol-Gel Coatings on Glass

Abstract

Nano-composite sol-gel coatings on commercial glasses were applied by dip coating. Coating solution contained TEOS and GLYMO together with solvent, water and acid as a catalyst. Withdrawing rates of 2, 6 and 12 inch/min were applied and heat-treatment conditions were 200 o C for 1 hour in static air. Abrasion resistance, chemical resistance test with HCl, adhesion tests such as cross hutch cutter and HF were carried out and optical properties were measured in order to study the effects of these hard nano-composite coatings on glass. Results showed that the abrasion resistances were very high on Taber abrasion tests comparable to that of glass. Also optical properties of coated glasses were very similar to those of uncoated glasses. Only there was a small increase on transmission and this is a desirable optical property in glass applications.