SOL FOR APPLYING SOL-GEL COATING ON SURFACE, METHOD OF APPLYING SOL-GEL COATING, PREPARATION METHOD THEREOF AND USE

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to sol for applying sol-gel coating onto a surface. The sol contains at least one organometallic compound of zirconium, aluminium or titanium, at least one organosilane compound, at least one compound selected from acids, bases, glycols and ethoxy ethanol as a catalyst. The sol also contains demineralised or distilled water. The total amount of at least one organometallic compound of zirconium, aluminium or titanium and at least one organosilane compound is greater than 50%. The sol also contains less than 5% harmless organic solvent such as non-toxic aliphatic alcohols. The sol also contains at least one surfactant and organic binder. The invention also relates to a set comprising a first container which contains a first portion in form of liquid which contains at least one organometallic compound of zirconium, aluminium or titanium, at least one compound selected from acids, bases, glycols and ethoxy ethanol, and a second container which contains a second portion in form of a liquid which contains an organosilane compound. The sol-gel layer is obtained by depositing the said sol onto a substrate. The layer is dried to obtain a sol-gel layer on the substrate. The sol-gel layer is used to endow the surface of the substrate with corrosion resistance. The surface of the substrate can have one or more sol-gel layers.;EFFECT: method enables obtaining the desired coating thickness without deterioration of anti-corrosive properties, as well as obtaining a coating with uniform thickness without overlapping.;65 cl, 2 ex