PROCESS FOR PREPARING NANOCOMPOSITE FILMS MEANT TO PROTECT ARCHITECTURAL LITHIC COMPONENTS OF CULTURAL HERITAGE

摘要

The invention relates to a process for preparing nanocomposite films to be used for protecting architectural components of the national heritage. According to the invention, the process consists in preparing a suspension of nanoparticles of magnesium oxide 0.5% in a solution of hydrophobically modified sodium polyacrylate 0.1% and applying a suspension layer, on surfaces of different roughness such as glass, tiles, ceramics, sandstone, mortar, by usual methods, to result in a nanocomposite film having antimicrobial activity and, in the absence of light, a water absorption by capillarity reduced by 10%, photocatalytic properties and colour and appearance stability.