Water-based rust converting primer and preparation method thereof

Abstract

The invention provides water-based rust converting primer and a preparation method thereof. The water-based rust converting primer is prepared from the following components in parts by weight: 2-5 parts of a water-based rust converting agent, 0.1-0.4 part of a water-based defoamer, 0.5-1.5 parts of a stabilizer, 0.5-1.5 parts of a film forming aid, 10-15 parts of deionized water, and 80-88 parts of vinyl acetate-acrylate copolymer emulsion. The water-based rust converting primer prepared by the invention coats or is sprayed on the rusting surface of a ship, a rusting layer is directly converted into an inert and hard protecting film, so that the surface is protected against being rusted for a long time, and double effects of removing rust and preventing rust are achieved; and moreover, the deionized water is used as a cosolvent, an organic solvent is not required to be added, the environment is protected, and the water-based rust converting primer is harmless to human bodies.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based rust conversion primer and a preparation method thereof. Background technique [0002] At present, the anticorrosion of storage tanks, large mechanical equipment and steel structures in the domestic petroleum and petrochemical industry mainly follows the old process of coating after sandblasting or shot blasting. Although the anticorrosion effect is good, there are also complex structures in sandblasting and shot blasting processes. Parts have many disadvantages such as dead angle, high power consumption, dust pollution, noise pollution, high cost, etc., and can only be sand blasted and shot blasted before the installation of new storage tanks or equipment, and then painted with primer before welding and installation, all installation is completed , and finally paint the primer and topcoat. Therefore, even if sandblasting and shot blasting are used, they can only ...

AI Technical Summary

Problems solved by technology

Nowadays, many large-scale steel structures, bridges, ships, etc. have very complex surface structures. Due to the limitation of construction conditions in the process of coating anti-corrosion coatings, it is difficult to use mechanized methods to achieve overall derusting, and only manual or electric tools can be used. derusting

As a result, there must be rust residue, which makes it difficult to guarantee the quality of rust removal, and the overall corrosion resistance after painting is reduced.

Images