Transition paint for easy-lifting paint film surface as well as preparation method and coating method of transition paint

Abstract

The invention relates to transition paint for an easy-lifting paint film surface. The transition paint is characterized by comprising the following material components in percentage by weight: 8.5% of polyvinyl butyral, 5.0% of alkali type zinc yellow, 1.5% of talcum powder, 52.2% of isopropanol, 4.8% of chromium phosphate, 14.7% of methyl iso-butyl ketone, 10.8% of industrial alcohol, 1.2% of phosphoric acid and 1.3% of water. The coating method is used for coating the transition paint on the surface of the easy-lifting paint film surface, so that the transition paint is cured to form a shielding paint film of strong solvent resistant paint (for example nitryl finish paint, acrylic finish paint and acrylic polyurethane finish paint). And strong solvent paint is re-coated on the shielding paint film, so that a lifting phenomenon does not appear.

Description

technical field [0001] The invention relates to a transition paint for the surface of an easy-to-bite primer film and a preparation and coating method, which is suitable for coating the surface of general equipment and facilities. Background technique [0002] When repainting the paint film on the surface of equipment and facilities, if the original paint film will be bitten by strong solvent paint (such as nitro topcoat, acrylic topcoat), the existing technology either removes the paint on the surface of equipment and facilities. paint film, recoat with a solvent-resistant primer followed by a strong solvent paint; or improve the situation with a fast-drying topcoat with a high pigment-to-base ratio. See P341 of "Coating Technology" edited by Zhang Xuemin. [0003] If a quick-drying topcoat with a high pigment-to-base ratio is used to solve the problem of undercutting, it will face unsatisfactory problems such as the performance and color of the quick-drying topcoat. If t...

AI Technical Summary

Problems solved by technology

If the painted film is removed and the surface treatment is done again, it is time-consuming, labor-intensive and material-intensive

Removing the paint with the paint remover method, not to mention the cost, will cause pollution to the surrounding environment, and will also bring harm to the operator, and the operation is inconvenient; it is not safe to remove the paint with the burning method, and it will also cause harm to the surrounding environment. Causes pollution and is not easy to remove cleanly; removes paint with tools, is not easy to remove cleanly, and will damage the surface of the workpiece

If a quick-drying topcoat with a high pigment-to-base ratio is used to improve this situation, the protective performance of the quick-drying paint film is generally poor and may not meet the use requirements.

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