PASSIVATION TREATMENT AGENT FOR HOT-DIP ALUMINUM-ZINC PLATED SHEET AND PRODUCTION METHOD AND USE THEREOF

摘要

Provided is a passivation treatment agent for a hot-dip aluminum-zinc plated sheet, raw materials of which comprise 2 to 6 parts by weight of a water-soluble molybdate, 4 to 12 parts by weight of a water-soluble manganese salt, 50 to 100 parts by weight of an alkaline silica sol, and 50 to 100 parts by weight of a water-soluble organic resin. Also provided is a method for producing the passivation treatment agent for the hot-dip aluminum-zinc plated sheet, which includes the following steps of: dissolving the water-soluble molybdate and the water-soluble manganese salt in deionized water to form a solution, adding the alkaline silica sol into the solution and mixing uniformly, then adding the water-soluble organic resin and mixing uniformly, adjusting the pH value of the solution with phosphoric acid to 5-8. Also provided are the hot-dip aluminum-zinc plated sheet treated with the passivation treatment agent therefor and a passivation treatment method thereof.