Current trends in the modification of zinc-filled polymer coatingsстатья
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Дата последнего поиска статьи во внешних источниках: 16 сентября 2020 г.
Аннотация:Zinc-filled polymer coatings and primer formulations are among the most common and wellprovenmethods for long-term anticorrosive protection of critical metal structures andequipment. These coatings are successfully used both for the protection of internal surfaces ofequipment and pipelines and for external protection. The main ways to modify zinc-filledcoatings (ZFC) include modification of the zinc filler, modification of the polymer base, and theuse of diverse active additives. Various methods of modifying the zinc filler are considered,including modification of the zinc alloy composition, surface modification of zinc particles, andthe use of particles with various shapes and sizes – from nanoparticles to flake-shaped pigments.An analysis of the incorporation of various electrochemically active additives into ZFC,including nanoscale carbon-containing additives (carbon nanotubes, graphene and grapheneoxide), as well as nanoparticles based on montmorillonite and layered double hydroxides, isperformed. The experience in the incorporation of activators of zinc particles and selectivemodifiers and corrosion inhibitors along with conductive polymers as additives is considered.Approaches to the modification of the polymer base of ZFC are considered, taking into accounttheir use in multi-layer coatings, including the combinations with layers of inert insulatingcoatings and water-borne polymers.