PROPERTIES OF HYBRID COATINGS BASED ON 3-TRIMETHOXYSILYLPROPYL METHACRYLATE

Inorganic-organic hybrid coatings were prepared by the sol-gel process from sols based on TMSPM (3-(trimethoxysilyl)propylmethacrylate)-TEOS (tetraethoxysilane) on glass, corundum, and polished steel substrates and then heat treated at either 90 C or 150 C for 3 h. The morphology and microstructure of the coatings were analysed by SEM and AFM. The refractive index and thickness were measured. The abrasion resistance of the coatings largely depends on the heat treatment temperature. Chemical resistance tests and porosity measurements using N2 adsorption confirmed that the coating prepared from 100% TMSPM is slightly porous. Thus, the hybrid coatings are unsuitable for use as a protective barrier on metals.