Composite Polymer–Metal Hydroxide Coatings with Flame-Retardant Properties

Electrophoretic deposition (EPD) manufacturing technique has been developed for the cathodic deposition of a hydrotalcite-type magnesium–aluminum–zirconium hydroxide (MAZ) and composite coatings, containing MAZ in a matrix of poly(4-vinylpyridine-co-butyl methacrylate) (PVBM) or chitosan (CHIT) polymers. The adsorption of cationic celestine blue dye (CBD) on MAZ allowed particle charging. MAZ is a promising material for application as a flame-retardant additive (FRA) due to its significant water release and memory properties. The particle charging and deposition mechanisms are discussed. The composite coatings showed flame-retardant and corrosion protection properties.