Solvent-based self-curing inorganic zinc-rich coating
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The curing mechanism of solvent-based self-curing inorganic zinc-rich coatings is also complex. Ethyl orthosilicate, with the molecular structure Si(OCH2CH3)4, is hydrolyzed to produce a solution of ethyl orthosilicate containing hydroxyl groups. When this solution is mixed with zinc powder and applied as a film, the partially hydrolyzed ethyl silicate continues to undergo hydrolytic polycondensation, resulting in the formation of a network-like polymer.
Solvent-based self-curing inorganic zinc-rich coatings are primarily cured through the hydrolysis and polycondensation reactions of ethyl silicate. Ethyl orthosilicate forms molecules with hydroxyl groups after hydrolysis; when mixed with zinc powder and applied as a coating, further hydrolysis and polycondensation occur, ultimately resulting in a networked polymer structure that causes the coating to cure and form a protective film. .