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Water-based acrylic painting pigment and preparation method thereof

A technology of acrylic and painting, applied in the field of pigments, can solve the problems of hydrolysis and softening of paint film on the surface of paintings, contact adhesion, etc., and achieve the effects of avoiding mutual adhesion, increasing fluid volume, good water retention and fluidity

Active Publication Date: 2015-12-23
河北青竹画材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the constraints of existing thickeners and dispersants, the painting area of ​​existing water-based acrylic paints is generally only 3-5㎡ / kg, and after painting with this paint, as time goes by, the painting The surface paint film is easy to hydrolyze and soften after absorbing moisture, so that adhesion occurs when in contact

Method used

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  • Water-based acrylic painting pigment and preparation method thereof

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preparation example Construction

[0044] The present invention also discloses a preparation method of the above-mentioned water-based acrylic paint, comprising the following steps:

[0045] (A) Mix 10-15 parts by weight of toner, 0.2-0.4 parts by weight of dispersant and 15-20 parts by weight of water, and make a color paste after grinding;

[0046] (B) mixing hydroxycellulose and an alkali-soluble thickener to obtain a thickener;

[0047] Mix 40-50 parts of acrylic emulsion with 5-10 parts by weight of the thickener, adjust the pH value to 8-9, and obtain an adhesive after reaction;

[0048](C) mixing the color paste and adhesive to obtain water-based acrylic paint.

[0049] According to the present invention, the selection and addition amount of each component is as described in the technical solution above, and will not be repeated here.

[0050] First, 10-15 parts by weight of toner, 0.2-0.4 parts by weight of dispersant and 15-20 parts by weight of water are uniformly mixed, and the color paste is prepa...

Embodiment 1

[0058] The solid acrylic resin is mixed with ammonia water, and the pH value is adjusted to 8 until the solid acrylic resin is completely dissolved, wherein the mass percentage of the solid acrylic resin is 30%.

[0059] Mix 10 parts by weight of toner, 0.2 parts by weight of dispersant and 15 parts by weight of water evenly, and make a color paste after grinding to a particle size of 35 μm;

[0060] Mixing hydroxyethyl cellulose and an alkali-soluble thickener according to a mass ratio of 3:2 to obtain a thickener;

[0061] Mix 40 parts of acrylic emulsion and 5 parts of the thickener, adjust the pH value to 8-9, and obtain the adhesive after reaction;

[0062] The color paste and the adhesive are mixed evenly to obtain the water-based acrylic paint.

[0063] After diluting the water-based acrylic paint prepared in this embodiment 3 times with water, coat it on the drawing paper with a 120 μm applicator. Layer contact), press 20kg of gravity, and check whether the coating i...

Embodiment 2

[0066] Mix the solid acrylic resin with ammonia water, adjust the pH value to 8, until the solid acrylic resin is completely dissolved, wherein the mass percentage of the solid acrylic resin is 32%.

[0067] Mix 13 parts by weight of toner, 0.3 parts by weight of dispersant and 18 parts by weight of water evenly, and make a color paste after grinding to a particle size of 30 μm;

[0068] Mixing hydroxyethyl cellulose and an alkali-soluble thickener according to a mass ratio of 5:1 to obtain a thickener;

[0069] Mix 45 parts of acrylic emulsion and 8 parts of the thickener, adjust the pH value to 8-9, and obtain the adhesive after reaction;

[0070] The color paste and the adhesive are mixed evenly to obtain the water-based acrylic paint.

[0071] After diluting the water-based acrylic paint prepared in this embodiment 3 times with water, coat it on the drawing paper with a 120 μm applicator, the area of ​​painting is 7㎡ / kg, and fold it in half after the coating is dried and ...

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Abstract

The invention relates to a water-based acrylic painting pigment which comprises the following components in parts by weight: 40-50 parts of acrylic acid emulsion, 5-10 parts of thickener, 10-15 parts of toner, 0.2-0.4 part of dispersing agent, 0.02-0.05 part of preservative and 15-20 parts of water. The thickener is a hydroxy cellulose / alkali-soluble thickener mixture. Since the hydrophobic main chain of the hydroxy cellulose and the surrounding water molecules are associated through hydrogen bond, the thickener adopted by the water-based acrylic painting pigment enhances the fluid volume of the polymer, and reduces the free motion space of particles, thereby enhancing the viscosity of the whole pigment system. Furthermore, the dispersing agent has lower surface tension, and has favorable dispersion effect on the toner and the like. In the drying film-formation process, as the water and ammonia are evaporated, the acrylic resin is cured again to form a paint film which can not be hydrolyzed or softened any more, thereby avoiding the phenomenon of mutual adhesion.

Description

technical field [0001] The invention relates to the field of pigments, in particular to a water-based acrylic paint and a preparation method thereof. Background technique [0002] Water-based acrylic paints are synthetic polymeric pigments made from pigment toners and acrylic emulsions. It has the advantages of light fastness and light fastness, water resistance after drying, etc., and can be painted on a variety of carriers, and is gradually praised by contemporary artists. [0003] At present, the water-based acrylic paint on the market consists of toner, acrylic emulsion, thickener, and dispersant. Among them, the thickener can regulate the thickening and rheological properties of the system. Most of them use ordinary alkali-soluble thickeners or polyurethane associative thickeners. Alkali-soluble thickener, its thickening mechanism is hydration and thickening by adding alkali, that is, an acrylic copolymer emulsion with a long-chain curly structure, and a considerable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/06C09D133/00C09D7/12
Inventor 刘其通何莉娜梁立军
Owner 河北青竹画材科技股份有限公司
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