Acrylic color paste and preparation method thereof

Abstract

The invention relates to acrylic color paste and a preparation method thereof, and belongs to the technical field of color paste. The acrylic color paste comprises the following components in parts by mass: 40-45 parts of tung oil-based glycidyl ester type epoxy resin, 10-15 parts of toner, 9-12 parts of a plasticizer, 9-12 parts of a wetting agent, 8-11 parts of a dispersant, 6-9 parts of a filler, 5-9 parts of a benzenesulfonic acid compound, 1-5 parts of a stabilizer, 0-5 parts of an auxiliary agent and 40-50 parts of an alcohol ether solvent. The dispersing agent is obtained by mixing calcium stearate, zinc stearate and styrene-maleic anhydride copolymer according to the mass ratio of (2-4): (1-3): 5; the filling agent is obtained by mixing fumed silica, diatomite and cellulose acetate according to a mass ratio of (1-4): (1-3): 5; the benzenesulfonic acid compound is selected from benzenesulfonic acid and / or sodium benzenesulfonate. The acrylic color paste has excellent dispersity, stability, weather resistance and durability.

Description

Technical Field

[0001] The invention belongs to the technical field of color pastes, and in particular relates to an acrylic color paste and a preparation method thereof. Background Art

[0002] Color paste is a paste colorant made of color powder, dispersant and filler as main raw materials, which is ground by machine and is suitable for many industries such as toys, silicone medical devices, acrylic, etc. The main function of color paste in acrylic (polymethyl methacrylate PMMA) material is coloring, which can make the product present more colors. It is an indispensable raw material for the production of acrylic products.

[0003] With the development of material science, the performance requirements for color pastes are getting higher and higher. In addition to physical properties such as stability and dispersibility, there are also higher requirements for various chemical properties such as weather resistance, light resistance, temperature resistance and migration resistance of color pastes. However, the performance of existing color pastes needs to be improved, and there is an urgent need to provide a color paste for acrylic resin with better performance. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an acrylic color paste and a preparation method thereof, wherein the acrylic color paste has excellent dispersibility, stability, weather resistance and durability.

[0005] The first object of the present invention is to provide an acrylic color paste, which comprises, by weight, 40-45 parts of tung oil-based glycidyl ester epoxy resin, 10-15 parts of color powder, 9-12 parts of plasticizer, 9-12 parts of wetting agent, 8-11 parts of dispersant, 6-9 parts of filler, 5-9 parts of benzenesulfonic acid compound, 1-5 parts of stabilizer, 0-5 parts of auxiliary agent and 40-50 parts of alcohol ether solvent; the dispersant is obtained by mixing calcium stearate, zinc stearate and styrene-maleic anhydride copolymer in a mass ratio of (2-4):(1-3):5; the filler is obtained by mixing fumed silica, diatomaceous earth and cellulose acetate in a mass ratio of (1-4):(1-3):5; the benzenesulfonic acid compound is selected from benzenesulfonic acid and / or sodium benzenesulfonate.

[0006] In one embodiment of the present invention, the tung oil-based glycidyl ester epoxy resin is synthesized by modifying tung oil, and has unique performance advantages. The main component of tung oil is tung oil triglyceride, which contains multiple conjugated double bonds. These double bonds can introduce epoxy groups during the chemical modification process to form a resin with high reactivity. This resin has a long molecular chain and good flexibility, and can provide good mechanical properties and flexibility.

[0007] In one embodiment of the present invention, calcium stearate and zinc stearate in the dispersant as low molecular weight dispersants can effectively reduce the surface tension of the toner and promote the initial dispersion of the pigment; and styrene-maleic anhydride copolymer as a polymer dispersant can form a protective layer by adsorbing on the surface of the toner to prevent the toner from reaggregating, thereby further improving the stability and uniformity of the dispersion. Calcium stearate and zinc stearate have good lubricating properties, which can reduce the friction between the toner and the equipment and improve the smoothness of the processing process; this lubricating effect and the synergistic effect of styrene-maleic anhydride copolymer can effectively reduce the viscosity of the color paste during the processing process and improve production efficiency. Calcium stearate and zinc stearate have excellent thermal stability and chemical stability, and can effectively prevent the performance of the color paste from deteriorating under high temperature or chemical environment; and styrene-maleic anhydride copolymer further enhances the stability of the toner dispersion system through its polymer structure, prevents the toner from settling or flocculating, thereby extending the storage life of the color paste.

[0008] In one embodiment of the present invention, the fumed silica and diatomaceous earth in the filler have a high specific surface area and adsorption capacity, and the silanol groups in the fumed silica and the carboxyl groups in the diatomaceous earth form hydrogen bonds with cellulose acetate, thereby forming a stable network structure, thereby enhancing the mechanical properties (strength and toughness) of the composite material. The rheological properties of the acrylic color paste can be adjusted by fumed silica and diatomaceous earth, so that it exhibits better fluidity and shear thinning properties during processing.

[0009] In one embodiment of the present invention, the color powder is selected from one or more of titanium dioxide, phthalocyanine green, iron oxide red and carbon black.

[0010] In one embodiment of the present invention, the plasticizer is selected from soybean oil and / or dioctyl terephthalate.

[0011] In one embodiment of the present invention, the wetting agent is selected from one or more of propylene glycol, glycerol, diethylene glycol, xylitol and sorbitol.

[0012] In one embodiment of the present invention, the stabilizer is an organotin compound.

[0013] In one embodiment of the present invention, the auxiliary agent is selected from one or more of a defoaming agent, an inhibitor and a leveling agent.

[0014] In one embodiment of the present invention, the defoaming agent is silicone oil;

[0015] The polymerization inhibitor is selected from one or more of hydroquinone monomethyl ether, p-hydroxyanisole, hydroquinone, tert-butylhydroquinone, p-tert-butylcatechol, tert-butylcatechol and methylhydroquinone;

[0016] The leveling agent is talcum powder.

[0017] In one embodiment of the present invention, the alcohol ether solvent is selected from one or more of ethylene glycol propyl ether, ethylene glycol butyl ether and propylene glycol propyl ether.

[0018] The second object of the present invention is to provide a method for preparing the acrylic color paste, comprising the following steps:

[0019] S1, mixing tung oil-based glycidyl ester epoxy resin, plasticizer, dispersant, filler, additive, color powder and alcohol ether solvent uniformly, and then heating to react to obtain a mixture;

[0020] S2. Add a wetting agent, a benzenesulfonic acid compound and a stabilizer to the mixture described in S1 and stir evenly to obtain the acrylic color paste.

[0021] In one embodiment of the present invention, in S1, the heating reaction is carried out at a temperature of 110°C-120°C and for a time of 4h-8h.

[0022] The technical solution of the present invention has the following advantages over the prior art:

[0023] (1) The dispersant in the acrylic color paste of the present invention is prepared by compounding calcium stearate, zinc stearate and styrene-maleic anhydride copolymer. Calcium stearate and zinc stearate quickly reduce the interfacial tension and promote the initial dispersion of the color powder; styrene-maleic anhydride copolymer ensures the long-term stable dispersion of the color powder through adsorption and steric hindrance effects. This synergistic effect not only improves the dispersion effect of the color paste, but also optimizes its gloss, leveling and color saturation. The three achieve a comprehensive improvement in dispersion performance, processing performance and stability through a complementary mechanism.

[0024] (2) The filler in the acrylic color paste of the present invention is prepared by compounding fumed silica, diatomaceous earth and cellulose acetate. The synergistic effect of fumed silica, diatomaceous earth and cellulose acetate can significantly improve the mechanical properties, dispersion stability, thixotropy, heat insulation and flame retardancy of the material.

[0025] (3) The benzenesulfonic acid compounds in the acrylic color paste of the present invention can form a synergistic effect with calcium stearate and zinc stearate; calcium stearate and zinc stearate, as lubricants and dispersants, can reduce the surface tension of the color powder and promote the dispersion of the color powder; benzenesulfonic acid compounds can further stabilize the surface charge of the pigment particles through their acidic properties, prevent the color powder from re-aggregating, and thus enhance the dispersion effect. In addition, calcium stearate and zinc stearate have excellent thermal stability and chemical stability, and can neutralize the acidic substances in the system to prevent the color paste from degrading under high temperature or chemical environment; when benzenesulfonic acid compounds are used in combination with them, they can adjust the acid-base balance of the system to a certain extent, further improving the stability of the color paste.

[0026] (4) The combination of the benzenesulfonic acid compounds and the styrene-maleic anhydride copolymer in the acrylic color paste of the present invention can further optimize the dispersion performance of the color paste. As a polymer dispersant, the styrene-maleic anhydride copolymer can form a protective layer by adsorbing on the surface of the color powder to prevent the color powder from agglomerating. The benzenesulfonic acid compounds can further reduce the surface tension of the color powder and enhance the dispersion effect through their surface activity. In addition, the benzenesulfonic acid compounds can also weakly interact with the carboxyl groups in the styrene-maleic anhydride copolymer to form a more stable dispersion system. This synergistic effect not only improves the dispersion uniformity of the color powder, but also enhances the long-term stability of the color paste and prevents the color powder from settling.

[0027] (5) The benzenesulfonic acid compounds in the acrylic color paste of the present invention not only enhance the dispersibility and stability of the color powder, but also optimize the overall performance of the color paste, including adhesion, glossiness and durability. This synergistic effect is of great significance for improving the comprehensive performance and application effect of the color paste. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments so that those skilled in the art can better understand the present invention and implement it. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. It should be understood that the specific embodiments are only used to explain the present invention, but the embodiments are not intended to limit the present invention.

[0029] In the present invention, unless otherwise explained, technical and scientific terms used in the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs.

[0030] In the present invention, unless otherwise stated, the term "and / or" used in the present invention includes any and all combinations of one or more of the associated listed items.

[0031] In the present invention, unless otherwise stated, the experimental methods used in the embodiments of the present invention are conventional methods unless otherwise stated, and the materials, reagents, etc. used are all commercially available unless otherwise stated.

[0032] In the present invention, unless otherwise specified, the tung oil-based glycidyl ester epoxy resin used in the embodiments of the present invention is purchased from Hengshui Yitong Fiberglass Co., Ltd.

[0033] Example 1

[0034] The acrylic color paste of this embodiment includes, by weight: 43 parts of tung oil-based glycidyl ester epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 10 parts of dispersant, 8 parts of filler, 7 parts of benzenesulfonic acid, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0035] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0036] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0037] The preparation of acrylic color paste specifically includes the following steps:

[0038] S1. First, tung oil-based glycidyl ester epoxy resin, plasticizer, dispersant, filler, additive and alcohol ether solvent are uniformly stirred, and then the color powder is slowly added, and the stirrer is turned on at a speed of 700 rpm. After all the color powder is added, the stirrer speed is increased to 1500 rpm, and the heater is turned on at the same time to make the raw material temperature reach 115° C. and stir for 6 hours, and then stand and cool to obtain a mixture;

[0039] S2. Add a wetting agent, benzenesulfonic acid and a stabilizer to the mixture described in S1, put it into a vacuum mixer and stir it for 4 hours, then grind it once in a coarse grinder, and then grind it four times in a fine grinder. Take a sample and send it to QC for particle inspection. After QC inspection shows that there are no particles, the acrylic color paste is obtained.

[0040] Example 2

[0041] Basically the same as Example 1, except that the composition of the acrylic color paste (different weight parts):

[0042] The acrylic color paste comprises, by weight: 40 parts of tung oil-based glycidyl ester epoxy resin, 15 parts of color powder titanium dioxide, 9 parts of plasticizer soybean oil, 12 parts of wetting agent diethylene glycol, 10 parts of dispersant, 8 parts of filler, 5 parts of benzenesulfonic acid, 5 parts of stabilizer butyl tin mercaptan, 1 part of auxiliary silicone oil and 50 parts of alcohol ether solvent ethylene glycol propyl ether;

[0043] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0044] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0045] Example 3

[0046] Basically the same as Example 1, except that the composition of the acrylic color paste (different weight parts):

[0047] The acrylic color paste comprises, by weight: 45 parts of tung oil-based glycidyl ester epoxy resin, 10 parts of color powder titanium dioxide, 12 parts of plasticizer soybean oil, 9 parts of wetting agent diethylene glycol, 10 parts of dispersant, 8 parts of filler, 9 parts of benzenesulfonic acid, 1 part of stabilizer butyl tin mercaptan, 5 parts of auxiliary silicone oil and 40 parts of alcohol ether solvent ethylene glycol propyl ether;

[0048] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0049] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0050] Comparative Example 1

[0051] Basically the same as Example 1, except that the composition of the acrylic color paste (replacing the tung oil-based glycidyl ester epoxy resin with ordinary epoxy resin):

[0052] The acrylic color paste includes, by weight: 43 parts of common epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 10 parts of dispersant, 8 parts of filler, 7 parts of benzenesulfonic acid, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0053] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0054] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0055] Comparative Example 2

[0056] Basically the same as Example 1, except that the composition of the acrylic color paste (without adding calcium stearate):

[0057] The acrylic color paste comprises, by weight: 43 parts of tung oil-based glycidyl ester epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 7 parts of dispersant, 8 parts of filler, 7 parts of benzenesulfonic acid, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0058] The dispersant includes 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0059] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0060] Comparative Example 3

[0061] Basically the same as Example 1, except that the composition of the acrylic color paste (without adding styrene-maleic anhydride copolymer) is:

[0062] The acrylic color paste comprises, by weight: 43 parts of tung oil-based glycidyl ester epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 5 parts of dispersant, 8 parts of filler, 7 parts of benzenesulfonic acid, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0063] The dispersant includes 3 parts of calcium stearate and 2 parts of zinc stearate;

[0064] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0065] Comparative Example 4

[0066] Basically the same as Example 1, except that the composition of the acrylic color paste (without adding fumed silica):

[0067] The acrylic color paste comprises, by weight: 43 parts of tung oil-based glycidyl ester epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 10 parts of dispersant, 6 parts of filler, 7 parts of benzenesulfonic acid, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0068] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0069] The filler includes 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0070] Comparative Example 5

[0071] Basically the same as Example 1, except that the composition of the acrylic color paste (without adding cellulose acetate) is:

[0072] The acrylic color paste comprises, by weight: 43 parts of tung oil-based glycidyl ester epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 10 parts of dispersant, 3 parts of filler, 7 parts of benzenesulfonic acid, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0073] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0074] The filler includes 2 parts of fumed silica and 1 part of diatomaceous earth.

[0075] Comparative Example 6

[0076] Basically the same as Example 1, except that the composition of the acrylic color paste (without adding benzenesulfonic acid):

[0077] The acrylic color paste comprises, by weight: 43 parts of tung oil-based glycidyl ester epoxy resin, 13 parts of color powder titanium dioxide, 11 parts of plasticizer soybean oil, 11 parts of wetting agent diethylene glycol, 10 parts of dispersant, 8 parts of filler, 3 parts of stabilizer butyl tin mercaptan, 2 parts of auxiliary silicone oil and 45 parts of alcohol ether solvent ethylene glycol propyl ether;

[0078] The dispersant includes 3 parts of calcium stearate, 2 parts of zinc stearate and 5 parts of styrene-maleic anhydride copolymer;

[0079] The filler includes 2 parts of fumed silica, 1 part of diatomaceous earth and 5 parts of cellulose acetate.

[0080] Test Case

[0081] According to the standard GB / T 21473-2008, the compatibility, adhesion, weather resistance, light resistance, storage stability, etc. of the acrylic color pastes of Examples 1-3 and Comparative Examples 1-6 were tested. The specific results are shown in Table 1:

[0082] Table 1

[0083] Sample Compatibility Adhesion Weather resistance Lightfastness Storage stability Example 1 No floating color or blooming Level 5 Level 5 Level 5 60 days no flocculation Example 2 No floating color or blooming Level 5 Level 5 Level 5 60 days no flocculation Example 3 No floating color or blooming Level 5 Level 5 Level 5 60 days no flocculation Comparative Example 1 No floating color or blooming Level 3-4 Level 3 Level 3-4 60 days flocculation Comparative Example 2 No floating color or blooming Level 4 Level 4 Level 4 60 days flocculation Comparative Example 3 No floating color or blooming Level 3-4 Level 4 Level 4 60 days flocculation Comparative Example 4 No floating color or blooming Level 3 Level 3-4 Level 3-4 60 days flocculation Comparative Example 5 No floating color or blooming Level 4 Level 3-4 Level 4 60 days flocculation Comparative Example 6 No floating color or blooming Level 3-4 Level 3-4 Level 3-4 60 days flocculation

[0084] It can be seen from Table 1 that the acrylic color paste of the embodiment has excellent adhesion, weather resistance and light resistance, and has no sedimentation and flocculation after being placed for two months.

[0085] By comparing Example 1 and Comparative Example 1, it can be seen that when the tung oil-based glycidyl ester epoxy resin is replaced with ordinary epoxy resin, the adhesion, weather resistance, light resistance and storage stability of the acrylic color paste are poor. This is because the reaction activity of ordinary epoxy resin is low and it cannot effectively improve the performance of the acrylic color paste.

[0086] By comparing Example 1 and Comparative Example 2, it can be seen that when calcium stearate is not added, the adhesion, weather resistance, light resistance and storage stability of the acrylic color paste are poor. This is because without the addition of calcium stearate, it is impossible to effectively synergize with styrene-maleic anhydride copolymer to improve the performance of the color paste.

[0087] By comparing Example 1 and Comparative Example 3, it can be seen that when styrene-maleic anhydride copolymer is not added, the adhesion, weather resistance, light resistance and storage stability of the acrylic color paste are poor. This is because without the addition of styrene-maleic anhydride copolymer, it is impossible to synergistically improve the performance of the color paste with calcium stearate, benzenesulfonic acid, etc.

[0088] Comparison of Example 1 and Comparative Example 4 shows that when fumed silica is not added, the adhesion, weather resistance, light resistance and storage stability of the acrylic color paste are poor. This is because without the addition of fumed silica, it is impossible to form a stable network structure with cellulose acetate, etc., and thus it is impossible to synergistically improve the stability of the color paste.

[0089] By comparing Example 1 and Comparative Example 5, it can be seen that when cellulose acetate is not added, the adhesion, weather resistance, light resistance and storage stability of the acrylic color paste are poor. This is because without the addition of cellulose acetate, it is impossible to synergistically improve the performance of the color paste with fumed silica, diatomaceous earth, etc.

[0090] By comparing Example 1 and Comparative Example 6, it can be seen that when benzenesulfonic acid is not added, the adhesion, weather resistance, light resistance and storage stability of the acrylic color paste are poor. This is because without the addition of benzenesulfonic acid, it is impossible to synergistically improve the performance of the color paste with calcium stearate, zinc stearate and styrene-maleic anhydride copolymer.

[0091] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. An acrylic color paste, characterized in that: The acrylic color paste comprises, by weight, 40-45 parts of tung oil-based glycidyl ester epoxy resin, 10-15 parts of color powder, 9-12 parts of plasticizer, 9-12 parts of wetting agent, 8-11 parts of dispersant, 6-9 parts of filler, 5-9 parts of benzenesulfonic acid compound, 1-5 parts of stabilizer, 0-5 parts of auxiliary agent and 40-50 parts of alcohol ether solvent; the dispersant is obtained by mixing calcium stearate, zinc stearate and styrene-maleic anhydride copolymer in a mass ratio of (2-4):(1-3):5; the filler is obtained by mixing fumed silica, diatomaceous earth and cellulose acetate in a mass ratio of (1-4):(1-3):5; the benzenesulfonic acid compound is selected from benzenesulfonic acid and / or sodium benzenesulfonate.

2. The acrylic color paste according to claim 1, characterized in that: The color powder is selected from one or more of titanium dioxide, phthalocyanine green, iron oxide red and carbon black.

3. The acrylic color paste according to claim 1, characterized in that: The plasticizer is selected from soybean oil and / or dioctyl terephthalate.

4. The acrylic color paste according to claim 1, characterized in that: The wetting agent is selected from one or more of propylene glycol, glycerol, diethylene glycol, xylitol and sorbitol.

5. The acrylic color paste according to claim 1, characterized in that: The stabilizer is an organic tin compound.

6. The acrylic color paste according to claim 1, characterized in that: The auxiliary agent is selected from one or more of a defoamer, an inhibitor and a leveling agent.

7. The acrylic color paste according to claim 6, characterized in that: The defoamer is silicone oil; The polymerization inhibitor is selected from one or more of hydroquinone monomethyl ether, p-hydroxyanisole, hydroquinone, tert-butylhydroquinone, p-tert-butylcatechol, tert-butylcatechol and methylhydroquinone; The leveling agent is talcum powder.

8. The acrylic color paste according to claim 1, characterized in that: The alcohol ether solvent is selected from one or more of ethylene glycol propyl ether, ethylene glycol butyl ether and propylene glycol propyl ether.

9. The method for preparing the acrylic color paste according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, mixing tung oil-based glycidyl ester epoxy resin, plasticizer, dispersant, filler, additive, color powder and alcohol ether solvent uniformly, and then heating to react to obtain a mixture; S2. Add a wetting agent, a benzenesulfonic acid compound and a stabilizer to the mixture described in S1 and stir evenly to obtain the acrylic color paste.

10. The method for preparing acrylic color paste according to claim 9, characterized in that: In S1, the heating reaction is carried out at a temperature of 110°C-120°C and for a time of 4h-8h.