Titanium dioxide added waterborne acrylic paint and preparation method thereof

Abstract

The objective of the invention is to provide a titanium dioxide added waterborne acrylic paint with high weather resistance and capabilities of insulating and preserving heat and a preparation method thereof. The waterborne acrylic paint comprises acrylic resin, a dispersant, a wetting agent, a film forming agent, an antifoaming agent, a filling material and a solvent, wherein the film forming agent comprises amino resin; the antifoaming agent comprises 4-heptanone fluoride; and the filling material comprises rutile type titanium dioxide. The preparation method comprises the following steps: S1, predispersing the acrylic resin, the dispersant, the wetting agent, the filling material and the solvent so as to obtain a predispersed system; and S2, subjecting a predispersed system obtained in the step S1 to grinding treatment, then adding the film forming agent, the antifoaming agent and the solvent into the predispersed system in sequence, and carrying out uniform mixing under stirring so as to obtain the titanium dioxide added waterborne acrylic paint. According to the invention, after coating of the waterborne acrylic paint provided by the invention, infrared ray can be effectively reflected, so the temperature of the waterborne acrylic paint is lower than the temperature of a material; and cooling devices like an air conditioner are not needed for cooling even in solar terms with a high temperature, so the purpose of saving energy is achieved.

Description

technical field [0001] The invention relates to the field of coatings, more specifically, it relates to a water-based acrylic paint added with titanium dioxide and a preparation method thereof. Background technique [0002] Coating, commonly known as "paint", is a kind of continuous solid film material that can be coated on the surface of an object through different construction techniques to form a solid adhesion and a certain strength, which can protect, decorate and characterize the object. Traditional paints will release a large amount of volatile organic compounds (VOC) after use, resulting in poor air quality. The human body inhales a large amount of high-concentration VOC in a short period of time can cause permanent damage to lung tissue, and long-term exposure will damage the respiratory system, Liver, kidney and other functions, causing organ failure. When these traditional coatings are used as paints applied to the body of wall, these coatings need a long time to...

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that due to some lattice defects in titanium dioxide (the main component of titanium dioxide), there are many photoactivation points on its surface, which have a slight absorption in the ultraviolet spectrum of visible light; Under the action of titanium dioxide, titanium dioxide can undergo continuous redox reactions to generate hydroxyl and peroxyl radicals; hydroxyl and peroxyl radicals are highly active, which can oxidize organic polymers in coatings and cause polymer chain breaks chain and degradation, destroying the continuity of the paint, and reducing the weather resistance of the paint (that is, the ability of the paint to resist the effects of sunlight and the atmosphere when exposed to outdoor climates, and to avoid discoloration, chalking, and loss of light)

This will cause this type of water-based acrylic paint to fail to meet the needs of some high-standard industries

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