Emulsion paint for external wall and preparation method of emulsion paint

Abstract

The invention relates to the field of building materials, and particularly discloses emulsion paint for an outer wall and a preparation method of the emulsion paint. The emulsion paint is prepared from the following raw material components in parts by weight: 380 to 420 parts of styrene-acrylic emulsion, 140 to 160 parts of coupling agent modified titanium dioxide, 114 to 126 parts of SiO2 powder, 5 to 10 parts of diammonium hydrogen citrate, 18 to 22 parts of coalescing agent, 155 to 165 parts of water, 4 to 8 parts of dispersing agent, 2 to 4 parts of defoaming agent, 0.5 to 1.5 parts of wetting agent, 10 to 20 parts of anti-freezing agent, 2 to 2.8 parts of hydroxyethyl cellulose, 0.8 to 1.2 parts of multifunctional additive, 45 to 55 parts of kaolin, 100 to 120 parts of heavy calcium powder, 73-77 parts of snowflake white powder, and 1.8-2.2 parts of a bactericide. The emulsion paint disclosed by the invention has excellent film-forming property, so that the emulsion paint has good water resistance, alkali resistance, water permeability and salt and alkali flooding resistance.

Description

technical field [0001] The application relates to the field of building materials, more specifically, it relates to a latex paint for exterior walls and a preparation method thereof. Background technique [0002] Latex paint is a kind of water-based paint, which is based on synthetic resin emulsion and added with pigments, fillers and various additives. It is also called synthetic resin emulsion paint. According to the different application environment of the product, it can be divided into interior wall latex paint and exterior wall latex paint. The exterior wall latex paint is mainly applied on the surface of the exterior wall to make the appearance of the building neat and beautiful, achieve the purpose of beautifying the urban environment, and at the same time protect the exterior wall of the building and prolong the service life of the exterior wall of the building. [0003] Exterior wall latex paint generally includes three categories including primer, intermediate pa...

AI Technical Summary

Problems solved by technology

However, the process of painting during coating needs to wait for the surface of the primer to dry completely, and the time to wait for the surface of the primer to completely dry generally takes about 2 hours, which is a long time

Therefore, in order to save construction time, primers are sometimes omitted for direct coating of intermediate coatings. Paint will cause the wall to appear alkaline after a long time of use, etc.

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