Colorful art paint without color mixing of various color particles and preparation method thereof

Abstract

The preparation method comprises the following steps: adding 50-70 parts by weight of a modified base paint and 10-20 parts by weight of a continuous phase into 20-30 parts by weight of a protective glue solution, stirring and dispersing at a high speed to a set fine particle state, then adding 1-5 parts by weight of a pigment, uniformly stirring at a low speed, and discharging. According to the invention, the process of separate color mixing and grouping granulation of color particles is simplified, only one white paint finished product needs to be uniformly produced, color mixing can be directly carried out in the finished product paint, construction can be directly carried out after color mixing is completed, the effect of multiple color particles is displayed, the texture is strong, the hand feeling is good, certain thickness and toughness are achieved, the cracking resistance and the scratch resistance are good, and free color mixing is realized; and the product can be prepared and used.

Description

Technical Field

[0001] The invention relates to the technical field of coatings, and in particular to a colorful artistic paint that does not require color mixing with multiple color particles and a preparation method thereof. Background Art

[0002] In the field of construction, stone is widely used in the decoration of the interior and exterior walls of buildings. However, due to the certain weight of stone, it is not conducive to the operation of construction workers to apply stone to the exterior walls of high-rise buildings. In addition, as time goes by, there is also a risk of accidental falling of stone. Therefore, stone is gradually replaced by paint.

[0003] In the process of coating development, multi-color coating is a water-based environmentally friendly coating with a good effect of imitating stone, and is one of the most widely used coatings. The existing multi-color art coatings need to divide the base paint into various hues for separate color matching. The colorant is wrapped in the base paint, and then grouped to form particles of the required size and shape, and finally mixed together and stirred evenly to form the product. Since most of them are toned according to the color specified by the customer, they cannot be produced in large quantities and inventory is required, so there is a long production cycle and complex color matching. If colorants are added during the mixing stage, the stability of the particles will decrease, which will ultimately affect the decorative effect and durability of the coating. In addition, as an artistic coating, especially for interior wall applications, due to the small usage, there is relatively more waste in small-order production, and it is also troublesome to change the color. Summary of the invention In order to solve the above technical problems, the present invention provides a colorful artistic paint that does not require multiple color particles for coloring and a preparation method thereof. The present invention simplifies the process of separate coloring and group granulation of color particles, and only requires the unified production of a white paint product. The coloring can be directly carried out in the finished paint, and the paint can be directly constructed after the coloring is adjusted, showing the effect of multiple color particles, with a strong texture, good hand feel, a certain thickness and toughness, good crack resistance and scratch resistance, and free coloring, which can be used as needed.

[0004] The purpose of the present invention is achieved through the following technical solutions: In a first aspect, the present invention provides a method for preparing a modified acrylate copolymer, which is specifically achieved by the following steps: 50-60 parts by weight of N-hydroxyethyl acrylamide, 140-160 parts by weight of castor oil, 130-140 parts by weight of tetrahydrofuran, 0.1-2 parts by weight of sodium hydroxide and 0.01-0.5 parts by weight of 2,6-dimethylphenol are placed in a reaction container, stirred and mixed evenly, then heated in a water bath at 40° C. for 1-5 hours, cooled, added with an appropriate amount of dichloromethane for dilution, washed with saturated brine, treated with magnesium sulfate, filtered, and vacuum dried to obtain a castor oil-based vinyl monomer; 15 to 20 parts by weight of castor oil-based vinyl monomer, 20 to 30 parts by weight of methyl methacrylate, 3 to 8 parts by weight of butyl acrylate, 1 to 5 parts by weight of acrylic acid, 0.1 to 1 parts by weight of sodium lauryl sulfate, 0.1 to 1 parts by weight of polyoxyethylene octylphenol ether-10, 0.1 to 1 parts by weight of ammonium persulfate, 0.1 to 1 parts by weight of sodium bicarbonate and 25 to 40 parts by weight of distilled water are placed in a reaction container, stirred and mixed to obtain a pre-emulsion; Dissolving 0.1 to 0.5 parts by weight of ammonium persulfate in 10 parts by weight of distilled water to form an ammonium persulfate solution; 20-30 parts by weight of pre-emulsion, 60-80 parts by weight of distilled water, 0.1-0.5 parts by weight of sodium bicarbonate, 0.1-0.5 parts by weight of sodium dodecyl sulfate and 0.1-0.5 parts by weight of polyoxyethylene octylphenol ether-10 are placed in a reaction container, the reaction container is placed in a water bath at 80°C for heating, and stirred and mixed uniformly at a speed of 350-500 rpm, then 3-8 parts by weight of ammonium persulfate solution are slowly added dropwise, followed by 50-60 parts by weight of pre-emulsion, and then 3-8 parts by weight of ammonium persulfate solution are slowly added dropwise, and then 3-8 parts by weight of ammonium persulfate solution are slowly added slowly, stirring is continued for 1-3 hours, cooling to room temperature, adjusting the pH value to 3.5-4, adding 5-10 parts by weight of silane modifier, slowly magnetically stirring in a water bath at 80°C for 1-3 hours, cooling to room temperature, and obtaining a modified acrylate copolymer.

[0005] Further, in the preparation step of the modified acrylate copolymer of the present invention: The silane modifier is at least one of 3-mercaptopropyltrimethoxysilane (MPTMS), 3-mercaptopropylmethyldimethoxysilane (HD-M4132), and 3-mercaptopropyltriethoxysilane (MTMO).

[0006] In a second aspect, the present invention provides a method for preparing a modified base paint, which is specifically achieved by the following steps: According to weight proportions, weigh 40-50 parts of distilled water, 20-30 parts of modified acrylate copolymer, 5-10 parts of 10wt% lithium magnesium silicate aqueous solution, 1-5 parts of 5wt% lithium magnesium silicate aqueous solution, 10-15 parts of filler, 1-5 parts of nano titanium dioxide, 0.5-1.5 parts of hydroxyethyl cellulose, and 1-5 parts of the first auxiliary agent; According to the above weight portions, distilled water, nano titanium dioxide, filler, hydroxyethyl cellulose and the first auxiliary agent are mixed and dispersed at high speed, the pH value of the system is adjusted to 7-9, and then the modified acrylate copolymer, 5wt% lithium magnesium silicate aqueous solution and 10wt% lithium magnesium silicate aqueous solution are added in sequence and dispersed at high speed until uniform, and the material is discharged to obtain a modified base paint.

[0007] Furthermore, in the preparation step of the modified base paint of the present invention: The hydroxyethyl cellulose is composed of HE-10k cellulose, 250HHBR cellulose and DC-600 cellulose in a mass ratio of 3:2:6; The first auxiliary agent includes at least one of a dispersant, a defoamer, a preservative, a film-forming auxiliary agent, and an antifreeze agent; The filler is at least one of diatomaceous earth, bentonite, kaolin and talc; The nano titanium dioxide is anatase phase titanium dioxide.

[0008] In a third aspect, the present invention provides a method for preparing an antibacterial acrylate copolymer, which is specifically achieved by the following steps: 3 to 6 parts by weight of methyl methacrylate, 5 to 10 parts by weight of butyl acrylate and 1 to 3 parts by weight of acrylic acid are mixed and stirred uniformly to form a pre-emulsified solution; Dissolving 0.01 to 0.5 parts by weight of potassium persulfate in 5 to 10 parts by weight of distilled water to form a potassium persulfate solution; 40-50 parts by weight of distilled water, 1-3 parts by weight of 3-(methacrylamido)propyltrimethylammonium chloride and 0.1-3 parts by weight of diacetone acrylamide are placed in a reaction container and heated to 82-85° C. Subsequently, 10-15 parts by weight of a pre-emulsified solution, 1-3 parts by weight of 2-hydroxypropyl acrylate and 3-7 parts by weight of a potassium persulfate solution are slowly added dropwise, and the reaction is continued under stirring for 0.5-1 hour. 3-8 parts by weight of a pre-emulsified solution, 0.1-3 parts by weight of a silane coupling agent and 2-5 parts by weight of an ammonium persulfate solution are slowly added, and the reaction is continued under stirring for 2-3 hours. The pH value of the system is adjusted to 6.5-7.5, 0.1-1 parts by weight of adipic acid dihydrazide are added, and the reaction is continued under stirring for 1-2 hours. The mixture is cooled to room temperature and discharged to obtain an antibacterial acrylate copolymer.

[0009] In a fourth aspect, the present invention provides a method for preparing a continuous phase, which is specifically achieved by the following steps: According to weight proportions, weigh 15-25 parts of distilled water, 65-75 parts of antibacterial acrylate copolymer, 0.1-0.5 parts of 250HBR cellulose, 0.1-0.5 parts of alkali swelling thickener and 0.1-5 parts of second auxiliary agent; According to the above weight parts, distilled water, 250HBR cellulose and the second auxiliary agent are mixed and dispersed at high speed, and then the antibacterial acrylate copolymer and the alkali swelling thickener are added in sequence and stirred to mix evenly, the pH value of the system is adjusted, and the material is discharged to obtain a continuous phase.

[0010] Furthermore, in the preparation step of the modified base paint of the present invention: The second auxiliary agent includes at least one of a dispersant, a wetting agent, a suspending agent, a film-forming auxiliary agent, an antifreeze agent, and a defoaming agent.

[0011] In a fifth aspect, the present invention provides a method for preparing a protective glue solution, which is specifically achieved by the following steps: According to the weight percentage, 90-95 parts of water, 5-10 parts of lithium magnesium silicate and 0.1-0.5 parts of suspending agent are placed in a reaction container, dispersed at high speed until mixed evenly, and then discharged.

[0012] In a sixth aspect, the present invention provides a method for preparing a colorful artistic paint without the need for color matching with a plurality of color particles, comprising the following steps: Add 50-70 parts by weight of modified base paint and 10-20 parts by weight of continuous phase to 20-30 parts by weight of protective glue solution, stir at high speed to disperse into a set fine particle state, then add 1-5 parts by weight of colorant, stir at low speed evenly, and discharge.

[0013] Furthermore, the steps of the present invention also include adding 5 to 10 parts by weight of 150 to 200 mesh glass microspheres before adding the colorant.

[0014] In a seventh aspect, the present invention provides a colorful artistic paint that does not require multiple color particles for color matching, which is prepared by the above-mentioned method for preparing colorful artistic paint that does not require multiple color particles for color matching.

[0015] The present invention successfully prepares a castor oil-based acrylate / silicon dioxide hybrid modified acrylate copolymer having an organic-inorganic covalent cross-linked network structure by a sol-gel method and a thiol-ene reaction. The inactive C=C bonds in castor oil participate in the curing process and form a covalent connection with the silicon dioxide network. After the introduction of silicon dioxide, the emulsion still maintains good stability. After the introduction of silicon dioxide, as a reinforcing filler, the silicon dioxide network significantly improves the mechanical properties and hardness of the material by greatly increasing the cross-linking density and establishing a covalent bond between the filler and the polymer.

[0016] The present invention prepares an antibacterial cationic acrylate copolymer by soap-free emulsion polymerization. The cationic acrylate-based copolymer in the continuous phase and the nano-titanium dioxide in the modified base paint achieve lower cost and dual antibacterial effects and have the ability to resist microbial contamination.

[0017] The present invention adopts a self-made emulsion with a high cross-linking density as a film-forming substance for making the base paint and the continuous phase, so that the toughness of the particles is enhanced, the base paint particles are ensured to be evenly distributed, and the base paint does not become mushy when stirred. At the same time, when colorants are added in the later stage, the medium can still be dispersed, ensuring the stability of the particles, maintaining the stability of the system, and ensuring the decorative effect and durability of the coating.

[0018] The present invention simplifies the process of color particles being separately adjusted and grouped for granulation, and only one white paint product needs to be produced in a unified manner. The color can be adjusted directly in the finished paint, and construction can be carried out directly after the color adjustment. The effect shows the effect of multi-color particles, with strong texture, good hand feel, certain thickness and toughness, good crack resistance and scratch resistance, and the formula uses low-VOC additives and odorless film-forming substances, which has environmental protection performance.

[0019] The outstanding advantages in production are convenient production and higher effect. It can be produced and stored like ordinary latex paint. When customers place an order, they can directly take it and mix the color without granulation and mixing. It can also be placed in dealer stores like latex paint. Designers or customers can also mix the color on site, realizing the freedom of color mixing and use it at any time. DETAILED DESCRIPTION

[0020] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0021] The reagents or instruments used in the present invention without indicating the manufacturer are all conventional products that can be purchased from the market.

[0022] Example 1 1) Preparation of modified acrylate copolymer

[0023] (2) Preparation of modified base paint

[0024] (3) Preparation of antibacterial acrylate copolymers

[0025] (4) Preparation of continuous phase

[0026] (5) Preparation of protective glue solution

[0027] (6) Preparation of colorful art paint

[0028] The process of preparing the colorful art paint in Example 2 and Example 3 is the same as that in Example 1, except that the modified acrylate copolymer is prepared as follows:

[0029] Note: The values ​​in the table are material amounts, unit: parts by weight.

[0030] Comparative Example 1 The difference from Example 1 is that the modified acrylate copolymer is prepared. The steps for preparing the modified acrylate copolymer in Comparative Example 1 are as follows:

[0031] Comparative Example 2 The difference from Example 1 is that the steps for preparing the antibacterial acrylate copolymer in Comparative Example 2 are as follows:

[0032] Comparative Example 3 The difference from Example 1 is that the modified base paint is prepared. The steps for preparing the modified base paint in Comparative Example 3 are as follows:

[0033] Comparative Example 4 The difference from Example 1 is that the continuous phase is prepared. The steps for preparing the continuous phase in Comparative Example 4 are as follows:

[0034] The colorful art paints prepared in Examples 1 to 3 and Comparative Examples 1 to 4 were subjected to performance tests. The performance test items and standards were in accordance with HG / T4343-2024, among which, the anti-mold test was in accordance with HG / T 3950-2007 culture medium method. According to the mold species specified in the method, each mold was made into a mold spore liquid and mixed at equal concentrations. A certain concentration of mixed spore suspension was sprayed on the culture medium and the test sample, and placed in an incubator at 25°C for 100 days. The mold growth area on the sample surface was observed with the naked eye and a microscope and rated.

[0035] The test results are shown in Table 1, Table 2 and Table 3.

[0036] Table 1

[0037] Table 2

[0038] Table 3

[0039] According to the disclosure of the above description, those skilled in the art to which the present invention belongs may also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A method for preparing a colorful artistic paint without the need for color matching with multiple color particles, characterized in that: The steps include: Add 50-70 parts by weight of modified base paint and 10-20 parts by weight of continuous phase to 20-30 parts by weight of protective glue solution, stir at high speed to disperse into a set fine particle state, then add 1-5 parts by weight of colorant, stir at low speed evenly, and discharge.

2. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 1, characterized in that: The steps include: Add 50-70 parts by weight of modified base paint, 10-20 parts by weight of continuous phase and 5-10 parts by weight of 150-200 mesh glass beads to 20-30 parts by weight of protective glue solution, stir at high speed to disperse into a set fine particle state, then add 1-5 parts by weight of colorant, stir at low speed evenly, and discharge.

3. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 1, characterized in that: The modified base paint is prepared by the following steps: According to weight proportions, weigh 40-50 parts of distilled water, 20-30 parts of modified acrylate copolymer, 5-10 parts of 10wt% lithium magnesium silicate aqueous solution, 1-5 parts of 5wt% lithium magnesium silicate aqueous solution, 10-15 parts of filler, 1-5 parts of nano titanium dioxide, 0.5-1.5 parts of hydroxyethyl cellulose, and 1-5 parts of the first auxiliary agent; According to the above weight portions, distilled water, nano titanium dioxide, filler, hydroxyethyl cellulose and the first auxiliary agent are mixed and dispersed at high speed, the pH value of the system is adjusted to 7-9, and then the modified acrylate copolymer, 5wt% lithium magnesium silicate aqueous solution and 10wt% lithium magnesium silicate aqueous solution are added in sequence and dispersed at high speed until uniform, and the material is discharged to obtain a modified base paint.

4. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 3, characterized in that: The modified acrylate copolymer is prepared by the following steps: 50-60 parts by weight of N-hydroxyethyl acrylamide, 140-160 parts by weight of castor oil, 130-140 parts by weight of tetrahydrofuran, 0.1-2 parts by weight of sodium hydroxide and 0.01-0.5 parts by weight of 2,6-dimethylphenol are placed in a reaction container, stirred and mixed evenly, then heated in a water bath at 40° C. for 1-5 hours, cooled, added with an appropriate amount of dichloromethane for dilution, washed with saturated brine, treated with magnesium sulfate, filtered, and vacuum dried to obtain a castor oil-based vinyl monomer; 15 to 20 parts by weight of castor oil-based vinyl monomer, 20 to 30 parts by weight of methyl methacrylate, 3 to 8 parts by weight of butyl acrylate, 1 to 5 parts by weight of acrylic acid, 0.1 to 1 parts by weight of sodium lauryl sulfate, 0.1 to 1 parts by weight of polyoxyethylene octylphenol ether-10, 0.1 to 1 parts by weight of ammonium persulfate, 0.1 to 1 parts by weight of sodium bicarbonate and 25 to 40 parts by weight of distilled water are placed in a reaction container, stirred and mixed to obtain a pre-emulsion; Dissolving 0.1 to 0.5 parts by weight of ammonium persulfate in 10 parts by weight of distilled water to form an ammonium persulfate solution; 20-30 parts by weight of pre-emulsion, 60-80 parts by weight of distilled water, 0.1-0.5 parts by weight of sodium bicarbonate, 0.1-0.5 parts by weight of sodium dodecyl sulfate and 0.1-0.5 parts by weight of polyoxyethylene octylphenol ether-10 are placed in a reaction container, the reaction container is placed in a water bath at 80°C for heating and stirring to mix evenly, then 3-8 parts by weight of ammonium persulfate solution is slowly added dropwise, followed by 50-60 parts by weight of pre-emulsion, and then 3-8 parts by weight of ammonium persulfate solution is slowly added dropwise, and then 3-8 parts by weight of ammonium persulfate solution is slowly added slowly, stirring is continued for 1-3 hours, cooling to room temperature, adjusting the pH value to 3.5-4, adding 5-10 parts by weight of silane modifier, slowly magnetically stirring in a water bath at 80°C for 1-3 hours, cooling to room temperature, and obtaining a modified acrylate copolymer.

5. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 4, characterized in that: The silane modifier is at least one of 3-mercaptopropyltrimethoxysilane, 3-mercaptopropylmethyldimethoxysilane and 3-mercaptopropyltriethoxysilane.

6. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 3, characterized in that: The hydroxyethyl cellulose is composed of HE-10k cellulose, 250HHBR cellulose and DC-600 cellulose in a mass ratio of 3:2:6; The first auxiliary agent includes at least one of a dispersant, a defoamer, a preservative, a film-forming auxiliary agent, and an antifreeze agent; The filler is at least one of diatomaceous earth, bentonite, kaolin and talc; The nano titanium dioxide is anatase phase titanium dioxide.

7. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 1, characterized in that: The protective liquid is prepared by the following steps: 90-95 parts of distilled water, 5-10 parts of lithium magnesium silicate and 0.1-0.5 parts of suspending agent are placed in a reaction container by weight, dispersed evenly at high speed until mixed evenly, and discharged.

8. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 1, characterized in that: The continuous phase is prepared by the following steps: According to weight proportions, weigh 15-25 parts of distilled water, 65-75 parts of antibacterial acrylate copolymer, 0.1-0.5 parts of 250HBR cellulose, 0.1-0.5 parts of alkali swelling thickener and 0.1-5 parts of second auxiliary agent; According to the above weight parts, distilled water, 250HBR cellulose and the second auxiliary agent are mixed and dispersed at high speed, and then the antibacterial acrylate copolymer and the alkali swelling thickener are added in sequence and stirred to mix evenly, the pH value of the system is adjusted, and the material is discharged to obtain a continuous phase.

9. The method for preparing a colorful artistic paint without the need for color matching with multiple color particles according to claim 1, characterized in that: The antibacterial acrylate copolymer is prepared by the following steps: 3 to 6 parts by weight of methyl methacrylate, 5 to 10 parts by weight of butyl acrylate and 1 to 3 parts by weight of acrylic acid are mixed and stirred uniformly to form a pre-emulsified solution; Dissolving 0.01 to 0.5 parts by weight of potassium persulfate in 5 to 10 parts by weight of distilled water to form a potassium persulfate solution; 40-50 parts by weight of distilled water, 1-3 parts by weight of 3-(methacrylamido)propyltrimethylammonium chloride and 0.1-3 parts by weight of diacetone acrylamide are placed in a reaction container and heated to 82-85° C. Subsequently, 10-15 parts by weight of a pre-emulsified solution, 1-3 parts by weight of 2-hydroxypropyl acrylate and 3-7 parts by weight of a potassium persulfate solution are slowly added dropwise, and the reaction is continued under stirring for 0.5-1 hour. 3-8 parts by weight of a pre-emulsified solution, 0.1-3 parts by weight of a silane coupling agent and 2-5 parts by weight of an ammonium persulfate solution are slowly added, and the reaction is continued under stirring for 2-3 hours. The pH value of the system is adjusted to 6.5-7.5, 0.1-1 parts by weight of adipic acid dihydrazide are added, and the reaction is continued under stirring for 1-2 hours. The mixture is cooled to room temperature and discharged to obtain an antibacterial acrylate copolymer.

10. A colorful art paint that does not require multiple color particles for color matching, characterized in that: The paint is prepared by the method for preparing a colorful artistic paint without the need for color matching with a plurality of color particles as described in any one of claims 1 to 9.

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