Preparation method of waterborne strippable coating

Abstract

The invention discloses a preparation method of a waterbornestrippable coating and belongs to the field of coatings. The preparation method comprises following operation steps: deionized water is added to a container, a wetting agent, a dispersing agent and a thickening agent are added sequentially under stirring at a rotating speed of 200-600 r / min, and the materials are stirred for 5-10 min; inorganic filler is added, and dispersion is performed for 20-40 min at a rotating speed of 1,500-2,500 r / min; the rotating speed is regulated to be 700-1,300 r / min, a polyurethane emulsion and a styrene-acrylic emulsion are added, and stirring is performed for 15-20 min; the rotating speed is regulated to be 200-600 r / min, a flatting agent, a coalescing agent, an organic silicon stripping agent and a waterborne corrosion inhibitor are added sequentially, and pH is regulated to be 8-9. According to the preparation method of the waterbornestrippable coating, tensile strength, breaking elongation and 180-degree stripping strength are greatly improved, drying time is short, and resistance to water and a 3% NaCl solution exceeds 24 h.

Description

technical field [0001] The invention belongs to a method for preparing a paint, in particular to a method for preparing a water-based peelable paint. Background technique [0002] During transportation and storage, steel materials, parts and equipment are vulnerable to corrosion from acid rain, water vapor, oil pollution, microorganisms, etc., as well as human friction, scratches, etc., so that the surface is damaged to varying degrees and the service life is shortened. If a temporary protective film is covered on the surface of these materials or equipment, it can not only isolate the erosion of external adverse factors and reduce the occurrence of damage, but also can be peeled off when the materials or equipment are put back into use without affecting their appearance and performance. . After decades of research, product quality, variety, and performance have all undergone great development. Since solvent-based peelable coatings perform better in terms of strength, elast...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of water-based peelable coatings to overcome the problem that solvent-based peelable coatings in the prior art need to use a large amount of organic solvents, which not only pollute the environment, endanger people's health, but also cause serious waste of resources. defect