Corrosion-Resistant Compounds Based on Polymer Matrices and Inorganic Additives
Corrosion of metal and reinforced concrete structures remains one of the most serious problems affecting strength and durability of products. It is primarily caused by environmental factors such as chloride, sulfate, and carbon dioxide exposure. Various methods are widely used to apply corrosion-resistant coatings onto metal surface. Purpose: The aim of this work is to synthesize corrosion-resistant compounds based on polymer matrices and inorganic additives and investigate their corrosion-resistant properties. Methodology/approach: It is shown that proposed compositions can be used as a complex protective coating. The introduction of a mixture of iron oxides with variable valence into the polyurethane polymer matrix significantly reduces the corrosion rate in chloride-containing environments due to secondary redox processes in the protective layer. The contact angle, adhesive strength are calculated, and the Pourbaix diagram is analyzed. Research findings: Synthesized are corrosion-resistant compounds based on metal-phosphate binders incorporated into polyurethane, polyvinyl acetate or alkyd polymer matrix. Practical implications: Polymer matrices combined with chemical additives and fillers have advantages in the protection efficiency, cost-effectiveness, and environmental sustainability, and such compounds can be used for corrosion protection.