CN116200089A - A kind of water-in-water colorful paint and its preparation method and application - Google Patents

Abstract

The invention discloses a water-in-water multicolor paint and its preparation method and application. The water-in-water multicolor paint consists of 250-300 parts of protective glue aqueous solution, 450-500 parts of color dot base material, and 250-300 parts of emulsion in parts by mass. Base material and 0-100 parts of letdown solvent are mixed, wherein, the color point base material includes: 80-100 parts of the first film-forming emulsion, 15-25 parts of filler, 1-3 parts of ultraviolet absorber, 13.5- 20.5 parts of additives, 30-50 parts of heat-sensitive color-changing pigments, 20-30 parts of the protective glue aqueous solution, and 240-300 parts of base solvent. The water-in-water colorful paint is composed of protective glue solution, color dot base material and emulsion base material. It has stable storage and low temperature storage performance, which is beneficial to storage and transportation. Durability of film color difference; excellent environmental performance.

Description

A kind of water-in-water colorful paint and its preparation method and application

technical field

The invention relates to the technical field of coatings, in particular to a water-in-water multi-color paint and its preparation method and application.

Background technique

Coating refers to a coating that is coated on the surface of an object under certain conditions and can form a continuous film after drying, thereby protecting, decorating or other special functions (insulation, rust prevention, mildew resistance, heat resistance, etc.) on the surface of the object. liquid or solid materials. In recent years, people's demand for coatings has been increasing, which has promoted the rapid development of the coatings industry, and people have begun to apply different types of coatings to many industries. Especially in building wall decoration, coatings are more widely used. Ordinary architectural coatings are generally composed of base materials, pigments and fillers, dispersants, film-forming aids, thickeners, defoamers and pH regulators. People can also design different colors of architectural coatings according to different needs. But in order to make buildings more attractive in appearance, people usually use color-changing paints as building wall decoration materials, which can allow buildings to present different colors under different conditions. Not only that, in some chemical production and other fields, the change of paint color also indicates the change of temperature, which can provide assistance for some industrial production. The color-changing water-in-water multi-color paint system is a new type of multi-color paint that can gradually change color at different temperatures. It can be customized to achieve various color changes at different temperatures according to customer needs. For example, the blue color in the paint film is at 33°C Color development below 33°C, it becomes very light gray blue; (26-28)°C above is light blue, and below 28°C gradually turns purple; above 20°C is light pink, (18-20) Below ℃ is bright red and so on.

However, the heat-sensitive color-changing materials used in the prior art are divided into inorganic heat-sensitive color-changing materials and organic heat-sensitive color-changing materials. Heat-sensitive color-changing materials have certain toxicity, which is not conducive to promotion and use; organic heat-sensitive color-changing pigments may fail to change color due to ultraviolet interference, and ultraviolet rays will also affect service life and color-changing performance.

Contents of the invention

Aiming at the problems existing in the prior art, the object of the present invention is to provide a water-in-water multi-color paint with good discoloration effect and good stability.

To achieve the above object, the present invention adopts the following technical solutions.

A water-in-water colorful paint, characterized in that, in parts by mass, it consists of 250-300 parts of protective glue aqueous solution, 450-500 parts of color dot base material, 250-300 parts of emulsion base material and 0-100 parts of paint mixing solvent Mixed, wherein, the color dot base material includes: 80-100 parts of the first film-forming emulsion, 15-25 parts of fillers, 1-3 parts of ultraviolet absorbers, 13.5-20.5 parts of auxiliary agents, 30-50 parts of thermal Sensitive color-changing pigments, 20-30 parts of the protective glue aqueous solution, and 240-300 parts of base material solvent.

As a further illustration of the above scheme, the protective glue aqueous solution is composed of the following raw materials in parts by mass: 240-280 parts of pulping solvent, 0.2-0.5 parts of the first anti-mold preservative, 10-20 parts of magnesium aluminum silicate protective glue .

As a further illustration of the above scheme, the emulsion base material is composed of the following raw materials in parts by mass: 130-150 parts of the second film-forming emulsion, 80-100 parts of adjusting solvent, and 16.5-36 parts of base material additives.

As a further illustration of the above scheme, the base additive is composed of the second anti-mold preservative, the second antifreeze, the second defoamer, the second thickener, the second film-forming aid, the second pH regulator and suspending agent; the mass parts of each component in the emulsion base material are: 0.5 to 1 part of the second anti-mold preservative, 4 to 10 parts of suspending agent, 0.5 to 1 part of the second defoamer, 3 ~5 parts of the second antifreeze agent, 1~2 parts of the second thickener, 3~8 parts of water, 0.5~1 part of the second pH regulator, and 4~8 parts of the film-forming aid.

As a further illustration of the above scheme, the auxiliary agent consists of the third anti-mold preservative, wetting agent, the first antifreeze agent, dispersant, the first defoamer, the first thickener, the first film-forming auxiliary agent and The composition of the first pH regulator; the mass parts of each component in the color dot base material are: 0.5 to 1 part of the third anti-mold preservative, 2 to 3.5 parts of dispersant, 0.5 to 1 part of wetting agent, 0.5 ~1 part of the first defoamer, 2~3 parts of the first antifreeze, 3.5~5 parts of the first thickener, 0.5~1 part of the first pH regulator, and 4~5 parts of the first coalescent.

As a further illustration of the above solution, the first film-forming emulsion and the second film-forming emulsion are pure acrylic emulsions.

As a further illustration of the above scheme, the first thickener includes fumed silica and hydroxyethyl cellulose ether; the ratio of fumed silica and hydroxyethyl cellulose ether is (1-2): ( 6~8).

As a further illustration of the above solution, the filler is calcined kaolin; the ultraviolet absorber is nano-sized rutile titanium dioxide.

A method for preparing a water-in-water multi-color paint, which is used to prepare the water-in-water multi-color paint described in any one of the above, characterized in that it comprises the following steps: (1) weighing each component, and weighing the first anti-corrosion paint Mix and stir the mold antiseptic and the slurry mixing solvent evenly, then add the magnesium aluminum silicate protective glue while stirring, continue to stir and disperse evenly to obtain the protective glue aqueous solution; (2) mix the base material solvent and the third anti-corrosion agent Mold preservative, wetting agent, first antifreeze agent, dispersant, and first defoamer are mixed and stirred evenly, and then the filler and the ultraviolet absorber are added while stirring, and the first film-forming agent is added while stirring. Mix and stir the emulsion, the first thickener, the first film-forming aid, the protective colloid aqueous solution and the first pH regulator evenly, then add the heat-sensitive color-changing pigment while stirring, and continue stirring to disperse Uniformly obtain the color dot base material; (3) mix the adjusting solvent with the second anti-mildew preservative, the second film-forming aid, the second antifreeze, and the second defoamer After mixing and stirring evenly, add the second film-forming emulsion, the second thickener, the second pH regulator and the suspending agent while stirring, and continue to stir and disperse to obtain the emulsion base material; (4) Add the color dot base material into the protective glue aqueous solution while stirring, mix and stir evenly, then add the emulsion base material while stirring, continue to stir and disperse evenly to obtain a water-in-water colorful paint.

A kind of application of water-in-water colorful paint, it is characterized in that, on base material surface, be sprayed with primer layer, middle paint layer, topcoat layer and ultraviolet absorbing finish layer from bottom to top; Described topcoat layer is made up of as above It is formed by spraying the water-in-water colorful paint described in any one.

The beneficial effects of the present invention are: (1) the water-in-water multi-color paint is composed of protective glue aqueous solution, color dot base material and emulsion base material, and has stable storage and low-temperature storage performance, which is beneficial to storage and transportation; at the same time, the color dot base material Equipped with ultraviolet absorber to absorb ultraviolet rays, improve the durability of paint film color difference; excellent environmental protection performance. (2) The preparation method of the water-in-water multicolor paint is simple, easy to operate and control, and suitable for large-scale industrial production. (3) Used with primer, intermediate paint and UV absorbing varnish, the paint film is soft, high gloss, durable and stain resistant.

Detailed ways

A water-in-water colorful paint, which is prepared by mixing 250-300 parts of protective glue aqueous solution, 450-500 parts of color dot base material, 250-300 parts of emulsion base material and 0-100 parts of paint letdown solvent in parts by mass. Wherein, the color dot base material includes: 80-100 parts of the first film-forming emulsion, 15-25 parts of fillers, 1-3 parts of ultraviolet absorbers, 13.5-20.5 parts of additives, 30-50 parts of heat-sensitive color-changing pigments, 20-30 parts of the protective glue aqueous solution, and 240-300 parts of base material solvent.

The protective glue aqueous solution is composed of the following raw materials in parts by mass: 240-280 parts of slurry mixing solvent, 0.2-0.5 part of the first anti-mildew preservative, and 10-20 parts of magnesium aluminum silicate protective glue.

The emulsion base material is composed of the following raw materials in parts by mass: 130-150 parts of the second film-forming emulsion, 80-100 parts of adjusting solvent, and 16.5-36 parts of base-material auxiliary agent. Described base material auxiliary agent is made up of the second anti-mildew preservative, the second antifreezing agent, the second defoamer, the second thickener, the second film-forming aid, the second pH regulator and suspending agent; The parts by mass in the emulsion base material are: 0.5 to 1 part of the second anti-mold preservative, 4 to 10 parts of the suspending agent, 0.5 to 1 part of the second antifoaming agent, 3 to 5 parts of the second antifreeze agent, 1 to 10 parts of the second antifreeze agent. 2 parts of the second thickener, 3-8 parts of water, 0.5-1 part of the second pH regulator, and 4-8 parts of the second film-forming aid.

The base solvent, the let-down solvent, the size-adjusting solvent and the adjusting solvent are all water.

Described auxiliary agent is made up of the 3rd anti-mold preservative, wetting agent, the first antifreeze agent, dispersant, the first defoamer, the first thickening agent, the first film-forming auxiliary agent and the first pH regulator; The mass parts in the color point base material are: 0.5～1 part of the third anti-mold preservative, 2～3.5 parts of dispersant, 0.5～1 part of wetting agent, 0.5～1 part of the first defoamer, 2 ~3 parts of the first antifreeze agent, 3.5~5 parts of the first thickener, 0.5~1 part of the first pH regulator, and 4~5 parts of the first coalescence aid.

The dispersant includes an ammonium salt dispersant and a sodium salt dispersant, and the ratio of the ammonium salt dispersant to the sodium salt dispersant is (3-5):(1-2). Promote the uniform dispersion of pigments and fillers in water-based coatings and avoid re-flocculation.

The first thickener includes fumed silica and hydroxyethyl cellulose ether; the ratio of fumed silica to hydroxyethyl cellulose ether is (1-2): (6-8); Silicon oxide increases the viscosity of the coating system, improves the thixotropy of the coating, and prevents sedimentation. Hydroxyethyl cellulose ether increases the viscosity of the coating system and improves the construction performance. The second thickener is an associative polyurethane thickener, which increases the viscosity of the coating system, improves construction performance and water resistance.

Both the first pH regulator and the second pH regulator are AMP95 multifunctional additives, which are used to stabilize the pH value of the coating system.

The first film-forming emulsion and the second film-forming emulsion are pure acrylic emulsions. Water-based pure acrylic emulsion has low VOC, strong adhesion and good weather resistance.

The filler is calcined kaolin, a high-quality filler for water-based paint, and the specific dosage is adjusted according to the depth of the color. The ultraviolet absorber is nano-scale rutile titanium dioxide, a high-quality pigment for water-based paints, and can absorb ultraviolet rays at the same time to improve the durability of the color difference of the paint film.

The first anti-mold preservative, the second anti-mold preservative, the third anti-mold preservative, the second antifreeze, the second defoamer, suspending agent, the second film-forming aid, the first antifreeze, the second antifreeze 1. Defoamer, wetting agent, and first coalescence aid can choose anti-mold preservatives, wetting agents, antifreeze agents, defoamers, suspending agents and coalescence aids commonly used in the field of coatings. It is not limited in this application.

The heat-sensitive color-changing pigment is an existing pigment, and its color ratio can be adjusted according to actual use, and its specific structure and working principle will not be repeated here.

A method for preparing a water-in-water multi-color paint, which is used to prepare the water-in-water multi-color paint according to any one of claims 1 to 7, characterized in that it comprises the following steps: (1) weighing each component, and The first anti-mold and anti-corrosion and the mixing solvent are mixed and stirred evenly, and then the magnesium aluminum silicate protective glue is added while stirring, and the stirring is continued to disperse evenly to obtain the protective glue aqueous solution; (2) the base solvent and the The third anti-mildew preservative, wetting agent, first antifreeze agent, dispersant, and first defoamer are mixed and stirred evenly, and then the filler and the ultraviolet absorber are added while stirring, and the said ultraviolet absorber is added while stirring. The first film-forming emulsion, the first thickener, the first film-forming aid, the protective colloid aqueous solution, and the first pH regulator are mixed and stirred evenly, and the heat-sensitive discoloration is added while stirring. Pigment, continue to stir and disperse evenly to obtain the color point base material; (3) mix the adjusting solvent with the second anti-mold preservative, the second film-forming aid, the second antifreeze, the After the second defoamer is mixed and stirred evenly, add the second film-forming emulsion, the second thickener, the second pH regulator and the suspending agent while stirring, and continue to stir and disperse evenly to obtain the emulsion base (4) Add the color dot base material into the protective glue aqueous solution while stirring, mix and stir evenly, then add the emulsion base material while stirring, continue to stir and disperse evenly to obtain a water-in-water colorful paint.

The specific implementation manner of the present invention will be further described below, so as to make the technical solution of the present invention and its beneficial effects more clear and definite. The embodiments described below are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

Table 1 is the composition of protective colloid solution

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Table 2 is the composition of color point base material

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Table 3 is the emulsion base composition

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The test effect of the water-in-water colorful paint that adopts above-mentioned raw material to make is shown in table 4 below

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The test effect of above-mentioned water-in-water colorful paint is as shown in table 5 below

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A kind of application of water-in-water colorful paint, it is characterized in that, be provided with primer layer, intermediate paint layer, topcoat layer and ultraviolet absorbing finish layer from bottom to top on the base material surface; Described topcoat layer is made of water It is sprayed with water-packed colorful paint.

Specifically, the primer layer is painted with a water-based alkali-resistant sealing primer, which can effectively prevent the precipitation of saline-alkali substances in the wall, strengthen the base layer, and significantly increase the adhesion between the top coat and the base layer. Material consumption: 0.10-0.15kg/㎡. Middle coat: apply 1-2 coats of middle paint, different colors can be configured according to customer requirements, with different effects of the top coat layer, real stone paint can be applied according to the texture effect the customer likes. Material consumption: 0.2-0.3kg/㎡ (real stone paint 3-3.5kg/㎡). Topcoat layer: Use a special spray gun to spray 1-2 layers of water-in-water multicolor paint. Before using the multicolor paint, gently stir the multicolor paint in the bucket with a clean wood chip (do not use an electric drill to stir), and the pressure of the spray gun should not be too high High, to prevent color dots from being crushed. Material consumption: 0.5-0.8kg/㎡. UV-absorbing varnish layer: Spray or roll 1-2 coats of UV-absorbing varnish, dosage: 0.15-0.2kg/㎡; function and function: make the whole paint film system soft to the touch, improve the gloss, and improve the paint film durability and stain resistance.

The detection effect of the above-mentioned composite coating is shown in Table 6 below

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Through the description of the above structure and principle, those skilled in the art should understand that the present invention is not limited to the above-mentioned specific embodiments, and that improvements and substitutions using known technologies in the art on the basis of the present invention all fall under the protection of the present invention. Scope, the protection scope of the present invention shall be defined by the terms of each claim and their equivalents. Parts not described in the detailed description are prior art or common knowledge.

Claims (10)

1. The water-in-water multi-color paint is characterized by being formed by mixing, by mass, 250-300 parts of a protective glue water solution, 450-500 parts of a color point base material, 250-300 parts of an emulsion base material and 0-100 parts of a paint mixing solvent, wherein the color point base material comprises the following components in parts by mass: 80-100 parts of first film forming emulsion, 15-25 parts of filler, 1-3 parts of ultraviolet absorber, 13.5-20.5 parts of auxiliary agent, 30-50 parts of thermochromic pigment, 20-30 parts of protective glue solution and 240-300 parts of base material solvent.

2. The water-in-water multi-color paint according to claim 1, wherein the protective glue solution comprises the following raw materials in parts by mass: 240-280 parts of size mixing solvent, 0.2-0.5 part of first mildew-proof preservative and 10-20 parts of magnesium aluminum silicate protective glue.

3. The water-in-water multi-color paint according to claim 1, wherein the emulsion base material comprises the following raw materials in parts by mass: 130 to 150 parts of second film forming emulsion, 80 to 100 parts of regulating solvent and 16.5 to 36 parts of base material auxiliary agent.

4. A water-in-water multi-color paint according to claim 3, wherein the base adjuvant consists of a second mildewproof preservative, a second antifreeze, a second defoamer, a second thickener, a second film forming adjuvant, a second pH adjuster and a suspending agent; the emulsion base material comprises the following components in parts by mass: 0.5 to 1 part of second mildew-proof preservative, 4 to 10 parts of suspending agent, 0.5 to 1 part of second defoamer, 3 to 5 parts of second antifreezing agent, 1 to 2 parts of second thickener, 3 to 8 parts of water, 0.5 to 1 part of second pH regulator and 4 to 8 parts of film forming auxiliary agent.

5. The water-in-water multi-color paint of claim 1, wherein the auxiliary agent is composed of a third mildew-proof preservative, a wetting agent, a first antifreeze, a dispersing agent, a first defoamer, a first thickener, a first film forming auxiliary agent and a first pH adjuster; the color point base material comprises the following components in parts by mass: 0.5 to 1 part of third mildew-proof preservative, 2 to 3.5 parts of dispersing agent, 0.5 to 1 part of wetting agent, 0.5 to 1 part of first defoaming agent, 2 to 3 parts of first antifreezing agent, 3.5 to 5 parts of first thickening agent, 0.5 to 1 part of first pH regulator and 4 to 5 parts of first film forming auxiliary agent.

6. A water-in-water multi-color paint as claimed in claim 3, wherein the first film-forming emulsion and the second film-forming emulsion are pure acrylic emulsions.

7. A water-in-water multi-color paint according to claim 5 wherein the first thickener comprises fumed silica and hydroxyethyl cellulose ether; the ratio of the fumed silica to the hydroxyethyl cellulose ether is (1-2): (6-8).

8. A water-in-water multi-color paint according to claim 1, wherein the filler is calcined kaolin; the ultraviolet absorber is nano-scale rutile titanium dioxide.

9. A process for the preparation of a water-in-water multi-color paint according to any one of claims 1 to 8, comprising the steps of:

(1) Weighing the components, mixing and stirring the first mildew-proof and corrosion-proof agent and the size mixing solvent uniformly, adding the magnesium aluminum silicate protective glue while stirring, and continuing stirring and dispersing uniformly to obtain the protective glue solution;

(2) Uniformly mixing and stirring the base material solvent, the third mildew-proof preservative, the wetting agent, the first antifreezing agent, the dispersing agent and the first defoaming agent, adding the filler and the ultraviolet absorbent while stirring, uniformly stirring, adding the first film forming emulsion, the first thickening agent, the first film forming auxiliary agent, the protective glue solution and the first pH regulator while stirring, adding the thermochromic pigment while stirring, and continuously stirring and dispersing to uniformly obtain the color point base material;

(3) Mixing and stirring the regulating solvent, the second mildew-proof preservative, the second film forming auxiliary agent, the second antifreezing agent and the second defoaming agent uniformly, adding the second film forming emulsion, the second thickening agent, the second pH regulator and the suspending agent while stirring, and continuing stirring and dispersing uniformly to obtain the emulsion base material;

(4) Adding the color point base material into the protective glue solution while stirring, adding the emulsion base material while stirring after uniformly mixing and stirring, and continuously stirring and dispersing uniformly to obtain the water-in-water multi-color paint.

10. The application of the water-in-water multi-color paint is characterized in that a primer layer, a middle paint layer, a top paint layer and an ultraviolet absorption finishing layer are sprayed on the surface of a substrate from bottom to top; the top coat layer is sprayed by the water-in-water multi-color paint according to any one of claims 1 to 8.