Composite nano-propylene pigment and preparation method thereof

Abstract

The invention discloses composite nano acrylic pigment and a preparation method thereof. The raw materials include an acrylate emulsion, nano calcium oxide, a wetting dispersant, a coalescing agent, athickening agent, a mildew-preventing bactericide, pigment slurry and water, and further includes nano zinc oxide, nano titanium dioxide and nano calcium carbonate. The wetting dispersant comprises an organosilicon compound and aminopropylamine dioleate, wherein each molecule of the organosilicon compound contains a hydrophilic group and at least two hydrophobic groups. The preparation method includes the following steps that the raw materials are weighed according to the proportions in a formula, acrylate emulsion, nano calcium oxide, nano zinc oxide, nano titanium dioxide, nano calcium carbonate, water and the wetting dispersant are mixed and ground, then the coalescing agent, the thickening agent, the mildew-preventing bactericide and the pigment slurry are added, the mixture is stirred and subjected to vacuum deformation, and the composite nano acrylic pigment is obtained. The pigment can be suitable for mural painting in an outdoor environment, and has the advantages of crack resistance, mildew resistance, yellowing resistance, high color retention and the like.

Description

Technical field [0001] The invention belongs to the field of pigments, and in particular relates to the application of acrylic pigments under outdoor high and low temperature alternation and dry and wet alternation phenomena, and particularly relates to a composite nano acrylic pigment and a preparation method thereof. Background technique [0002] Acrylic pigment A type of paint that mainly includes acrylic resin (such as polymethyl methacrylate) and pigments. Compared with other pigments, acrylic paint has obvious advantages in terms of durability, water resistance, and corrosion resistance. Therefore, it is often used in shelf paintings, indoor and outdoor murals in the prior art. However, as time goes by, it is still There are problems such as color discoloration, fading, and color instability under high and low temperature environments. Based on this, those skilled in the art have made some improvements, such as the Chinese invention patent CN101225250A, which discloses a ac...

AI Technical Summary

Problems solved by technology

Compared with other pigments, acrylic paint has obvious advantages in terms of firmness, wear resistance, water resistance, and corrosion resistance. Therefore, it is often used in easel paintings and indoor and outdoor murals in the current prior art. However, as time goes by, it still There are problems such as color change, fading, and color instability under high and low temperature environments. Based on this, those skilled in the art have made some improvements, such as Chinese invention patent CN101225250A, which discloses acrylic paint for fine arts containing nano-pigments And the manufacturing method thereof, which specifically includes: the proportion of formula is calculated in parts by mass: take 1-5 parts of nano-pigment, 5-20 parts of pigment powder or 10-20 parts of lithopone, 30-50 parts of polyacrylic acid emulsion, hydroxyethyl 5-10 parts of cellulose, 0.5-5 parts of chitosan, 8-18 parts of hydrated silicon dioxide, 0.2-1 part of sodium benzoate, 0.1-1.0 parts of phenoxyethanol, 2-6 parts of glycerin, 0.2-2 parts of ethanol 5 to 20 parts of distilled water; sprinkle hydroxyethyl cellulose and chitosan into distilled water to make adhesive glue, add sodium benzoate, phenoxyethanol, nano-pigment slurry, polyacrylic acid emulsion, Stir until uniform; then add pigment powder, hydrated silica, lithopone, glycerin and ethanol and stir evenly; grind to a finished product; although this patent achieves pigment weather resistance and chemical stability to a certain extent by adding nano-pigments However, for outdoor murals, due to the alternation of cold and heat, high and low temperature, the toughness of the formed film is poor, easy to crack, moldy, and there is still a problem of discoloration under the action of ultraviolet rays.

[0003] Another example is the Chinese invention patent CN106147332A, which discloses a composite nano-acrylic pigment, which is characterized in that it contains the following components by weight: 19-28 parts of acrylate emulsion, 3-8 parts of gum arabic, 2-6 parts of glycerin, 4-7 parts of triethanolamine, 2-6 parts of ethylene glycol butyl ether acetate, 2-5 parts of aminopropylamine dioleate, 1-4 parts of polyoxypropylene glyceryl ether, 2-6 parts of cetyl palmitate, 1-4 parts of calcium aluminate, 2-5 parts of nano-calcium oxide, 2-5 parts of phthalocyanine green G; although this patent has achieved color fastness and stability at elevated temperatures, it is easy to crack for outdoor mural pigments in changing seasons , mildew and other phenomena still cannot be solved at a high level

[0004] Therefore, based on the above-mentioned problems, those skilled in the art urgently need to seek a kind of outdoor mural painting that can meet the requirements of cold and heat alternation, high and low temperature alternation, and dry-wet alternation. Long-lasting, and can also maintain bright color and other characteristics

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