An anti-corrosion coating for stainless steel

Abstract

The invention discloses an anticorrosive paint for stainless steel. The anticorrosive paint is prepared by mixing the following raw materials in parts by weight: 50-70 parts of alkyd resin, 30-40 parts of silicon dioxide emulsion, 60-70 parts of polyvinyl acetate resin, 6-12 parts of phenyl trimethoxy silane, 10-20 parts of isobutanol, 10-14 parts of acetone, 8-14 parts of polybenzimidazole, 5-9 parts of KH-570, 11-14 parts of talcum powder, 12-14 parts of dimethyl ethanolamine, 7-10 parts of petroleum sodium sulfonate and 80-100 parts of water. The industrial tests prove that the anticorrosive paint has the advantages of terrific water resistance and corrosion resistance, can realize passivation and corrosion inhibition of a metal substrate, and avoids the use of heavy metals such as chromium which can cause environmental pollution; furthermore, the anticorrosive paint for the stainless steel is simple to prepare, low in cost and easy in industrial production.

Description

technical field [0001] The invention relates to an anticorrosion coating for stainless steel, which belongs to the technical field of chemical coatings. technical background [0002] At present, the annual economic losses caused by metal corrosion in my country account for about 3-5% of the gross national product, and the losses exceed the sum of the losses caused by fire, wind disasters and earthquakes. For a long time, in order to reduce the loss of corrosion, people have taken many measures, such as electrochemical protection of metals, corrosive medium treatment, overlay protection and so on. But so far the most common, economical and practical protection measures are coating protection. Coating anti-corrosion is widely used because of its simple construction, economical applicability, no constraints on equipment area and shape, and certain decorative effects. [0003] When stainless steel materials are used in industry, they are usually welded by high-frequency seam we...

AI Technical Summary

Problems solved by technology

At present, most of the anti-corrosion coatings on the market are solvent-based coatings, and many of these coatings have no obvious anti-corrosion effect; while the remaining coatings have the effect of inhibiting corrosion, but due to They contain harmful gases and heavy metals that are easy to cause damage to the human body, causing environmental pollution problems. At the same time, the characteristics of flammable and explosive solvents have brought unsafe hidden dangers to the environment.