Preparation method of stain-resistant high-hardness real stone paint

Abstract

The invention relates to the technical field of real stone coatings, in particular to a preparation method of a stain-resistant high-hardness real stone paint. The preparation method comprises a primer, a finish paint and a finish-coat paint, wherein the finish-coat paint comprises the following components in parts by mass: 10-20 parts of polyurethane emulsion, 0.6-2.4 parts of a hardening scratch-resistant agent, 10-12 parts of fumed silica, 0.15-0.3 part of an amide defoaming agent, 0.07-0.15 part of a preservative and 0.16-0.32 part of a nano additive. The finish paint comprises the following components in parts by mass: 10-20 parts of styrene-acrylic emulsion, 8-16 parts of polyurethane modified epoxy resin, 40-60 parts of fine aggregates, 2-4 parts of a thickening agent and 1.2-1.8 parts of a toughening agent. According to the preparation method, the hardening agent is added into the finish-coat paint, so that the coating layer of the finish-coat paint is reinforced, the hardnessand the wear resistance of the coating layer are improved, the hardness is improved along with the increase of the addition amount, the impact resistance of the coating can be improved, the adhesion force and the transparency of the coating layer of the coating are not influenced by the hardening agent, volume shrinkage of the coating layer during curing can be relieved by addition of the hardening agent, and the adhesion force between the coating layer and a substrate is improved; and therefore, the hardness of the real stone paint is improved.

Description

Technical field [0001] The invention relates to the technical field of real stone paint coatings, in particular to a preparation method of dirt-resistant high-hardness real stone paint. Background technique [0002] In recent years, green and environmental protection has become the first choice for many young people to decorate, and real stone paint has undoubtedly become their choice. The effect of this kind of decoration is very similar to granite and marble, giving people an elegant, simple and naturalistic feel. [0003] When real stone paint is used in northeastern cities, the temperature varies greatly throughout the year in the northeast, so the temperature resistance and freeze-thaw stability of the coating film are very high. For another example, the base surface of the exterior walls of buildings in the northeast is generally roughened, and the surface is rough, so the fineness of the paint is not high, but the adhesion of the paint is very strict. However, the existing...

AI Technical Summary

Problems solved by technology

However, when the existing real stone paint is used in northern cities, it is often affected by large temperature differences, easy to crack during use, and poor in stain resistance.

When used in southern cities, and due to the large amount of rain in southern cities, the water whitening resistance of real stone paint needs to be improved.