Painting gouache paint and method for preparing same

Abstract

The invention discloses painting gouache paint and a method for preparing the same. Raw materials for the painting gouache paint include paint color paste, pottery clay, nanometer titanium dioxide, adhesive, coalescing agents, surfactants, thickeners, wetting and dispersing agents, sterilizing agents, water, nanometer zinc oxide and nanometer calcium carbonate. The wetting and dispersing agents comprise organosilicon compounds and ethoxyl ether celluloses, molecules of the organosilicon compounds contain hydrophilic groups, and each organosilicon compound at least contains two hydrophobic groups. The method includes weighing the various raw materials according to formulas and proportions; mixing the paint color paste, the pottery clay, the nanometer titanium dioxide, the nanometer zinc oxide, the nanometer calcium carbonate, parts of the adhesive, the wetting and dispersing agents, parts of the surfactants and the water with one another to obtain mixtures; then adding the remaining adhesive, the remaining surfactants, the thickeners, the coalescing agents and the sterilizing agents into the mixtures and mixing the remaining adhesive, the remaining surfactants, the thickeners, the coalescing agents, the sterilizing agents and the mixtures with one another to obtain the painting gouache paint. The painting gouache paint and the method have the advantages that the painting gouachepaint is difficult to crack or mildew in high and low temperature alternating, dry and wet alternating and winter and summer alternating environments; excellent colors of the painting gouache paint further can be kept, and the painting gouache paint is high in covering power.

Description

technical field [0001] The invention belongs to the field of pigments, and in particular relates to the application of painting gouache paint under the phenomenon of outdoor high and low temperature alternation and dry-wet alternation, in particular to a painting gouache paint and a preparation method thereof. Background technique [0002] Gouache is the abbreviation of gouache painting. In my country, there are many names such as "propaganda color", etc. Compared with acrylic paint (or "concentrated advertising paint"), the covering power is weaker. The pigment used is usually called painting gouache paint. At the same time, there may also be defects in weather resistance, especially in the environment of alternating high and low temperature, alternating dry and wet, and alternating cold and heat, and mildew, and large color changes. [0003] For example, the Chinese invention patent CN101186782A discloses a nano-pigment-containing art gouache paint and a manufacturing metho...

AI Technical Summary

Problems solved by technology

This patent enhances the color and tinting strength by adding nano-pigment paste. Although it also achieves a certain weather resistance, it still has cracking, mildew, and color difference in the outdoor environment of alternating high and low temperature, alternating dry and wet, and alternating cold and heat. Defects such as large changes and poor covering power are not conducive to the application of painting gouache pigments for outdoor murals

[0004] Another example is the Chinese invention patent CN106221343A, which discloses a nanoscale weather-resistant painting gouache pigment and its preparation method, including: 20-30 parts of peach gum, 5-10 parts of pottery clay, 4-10 parts of nano-titanium dioxide, phthalocyanine green G 3- 10 parts, Fast Yellow G5-12 parts, Potassium Monododecyl Phosphate 6-15 parts, Coconut Oil Fatty Acid Diethanolamide 10-18 parts, Mannuronic Acid 2-6 parts, Fungicide 1-3 parts , 6-14 parts of guar gum, 3-9 parts of hydroxyethyl cellulose, 4-10 parts of aluminum silicate, 6-12 parts of ethylene glycol, 2-5 parts of triethanolamine, 40-80 parts of water; Although the patent has achieved certain advantages such as enhanced coverage and small color difference changes in high humidity and high temperature environments, the improvement in the stability of pigments in outdoor high and low temperature alternating, dry and wet alternating, and cold and hot environments is still small, and there are still some advantages. Cracking, mildew, etc., and there are certain discoloration problems

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