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Analysis of Salt Spray Resistance of Epoxy Zinc-Rich Primer Film
11-09
In the field of industrial anti-corrosion, most steel structure storage tanks, buildings, mechanical equipment, etc. are in the atmosphere and marine environment. In such an environment, steel structures are prone to corrosion and rust, so it is necessary to do a good job of anti-corrosion and anti-rust work. Epoxy zinc-rich primer is a widely used anti-rust primer in the field of steel structure anti-corrosion and workshop primer. The following editor mainly introduces the salt spray resistance of epoxy zinc-rich primer film.
As a commonly used anti-corrosion coating for steel structure metal substrates in the atmosphere and environment, the salt spray resistance of epoxy zinc-rich primer is one of the important technical indicators to measure its anti-corrosion performance. Its anti-corrosion mechanism is mainly to use the property that the activity of elemental zinc powder is greater than that of iron to achieve the purpose of sacrificial anode and cathodic protection of metal substrates such as steel. At the same time, the corrosion products such as zinc oxide and zinc hydroxide produced by the oxidation of zinc powder can fill the defects after the coating is damaged and form a shielding film, which plays a role in self-repair and hindering the invasion of corrosive media. Under normal circumstances, the zinc content determines the anti-corrosion performance of epoxy zinc-rich primer, and higher zinc powder can play a better anti-corrosion effect. But please note that the zinc content should be customized according to the actual situation.
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©2023 Huirui Environmental Protection Coating (Shanghai) Co., Ltd.
©2023 Huirui Environmental Protection Coating (Shanghai) Co., Ltd.
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