Formation of the Physical and Chemical Structure of Paint and Varnish Coatings During Their Nano-Modification

The issues of the formation of the physicochemical structure of paint and varnish coatings as a result of their modification with various additives are considered. It is indicated that an increase in the operational characteristics of coatings is ensured by cross-linking of polymer macromolecules and the formation of a network structure. The results of studying the structure of nano-modified coatings are presented; it was found that the introduction of carbon nanotubes and bismuth oxide does not change the group bonds in the basis of the binder of the paint-varnish material, while nano-additives contribute to the transition of polymer macromolecules to a stretched (stressed) state due to the occurrence of heterogeneous radical catalysis, which initiates the polymerization of the paint-varnish material, i.e. nano-additives act as structure-forming centers, provoking the elongation of polymer chains, which contributes to the formation of more molecular bonds. When interacting with nano-additives, the surface orientation of the polar groups of polymer molecules occurs, which enhances cohesive and adhesive bonds due to the formation of enhanced electrovalent interaction.

A.V. PCHELNIKOV, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.P. PICHUGIN, Doctor of Sciences (Engineering)

Novosibirsk State Agricultural University (160, Dobroliubova Street, Novosibirsk, 630039, Russian Federation)

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