Rain-imprint-resistant elastic coating and preparation method thereof

Abstract

The invention discloses a rain-imprint-resistant elastic coating and a preparation method thereof, relates to the technical field of petrochemical elastic coatings, and solves the problem that brightspots are easily formed on the prior elastic coating. The composition consists of the following raw materials in parts by weight: 15-20 parts of water, 30-40 parts of an elastic emulsion, 0.3-0.8 partof a film-forming auxiliary agent, 0.1-0.3 part of a wetting agent, 0.1-0.3 part of a pH regulator, 0.3-0.5 part of a defoaming agent, 0.5-1 part of a dispersant, 1-1.5 parts of an anti-freezing agent, 0.1-0.3 part of an antiseptic bactericidal agent, 35-45 parts of pigment and filler, and 0.8-1.5 parts of a thickening agent. The preparation method of the rain-imprint-resistant elastic coating comprises the following steps: (1) carrying out weighing according to the weight; (2) adding a part of the water in the step (1) into a material barrel of a high-speed dispersion machine for stirring, sequentially adding the wetting agent, the dispersing agent, the defoaming agent, the pH regulator, the antiseptic agent and the pigment and filler, carrying out uniform mixing, and then grinding the obtained slurry to 60-micron fineness; and (3) adding the remaining water in the step (2), the elastic emulsion, the defoaming agent, the antiseptic bactericidal agent, the film-forming auxiliary agent, the anti-freezing agent and the thickening agent in the ground slurry, and carrying out uniform mixing.

Description

technical field [0001] The invention belongs to the technical field of petrochemical elastic coatings, in particular to a rain mark-resistant elastic coating and a preparation method thereof. Background technique [0002] With its water-based environmental protection properties, latex paint has become the leading product in elastic paint for exterior walls. The decorative effect of exterior wall latex paint is the most important function for users, but in the engineering application of latex paint, rain marks often occur after rain, which seriously damages the decorative effect of exterior wall latex paint. The phenomenon of rain marks is mainly that hydrophilic substances or oligomers such as emulsifiers, wetting agents, and dispersants in the paint film migrate to the surface with rain or dew, and form water droplets or water lines. Accumulates on the paint film to form bright spots. The rain marks of elastic coatings on exterior walls are a special form of discoloration...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing elastic coatings are not strong enough to resist rain marks and are easy to form bright spots.