Water-based metallic paint and preparation method thereof

Abstract

The invention discloses water-based metallic paint and a preparation method thereof. The water-based metallic paint is prepared from the following components in parts by weight: 18 to 22 parts of titanium dioxide, 20 to 24 parts of hsiuyen jade powder, 2 to 4 parts of zinc oxide, 110 to 130 parts of precipitated barium, 35 to 45 parts of zinc phosphate, 0.8 to 1.2 parts of slow release agent, 1.5 to 2.5 parts of bentonite, 8 to 12 parts of ethylene glycol, 6 to 10 parts of dispersing agent, 0.8 to 1.2 parts of wetting agent, 1.8 to 2.2 parts of defoaming agent, 18 to 22 parts of aluminum triphosphate, 450 to 550 parts of water-based acrylic emulsion, 0.4 to 0.6 part of stabilizing agent, 42 to 48 parts of coalescing agent, 1.8 to 2.2 parts of multifunctional additive, 3.4 to 4.6 parts of thickening agent, 0.8 to 1.2 parts of flatting agent and 18 to 22 parts of color paste. 7-9 parts of a flash rust inhibitor, 0.8-1.2 parts of a bactericide and 180-220 parts of water; according to the water-based metallic paint disclosed by the invention, the prepared water-based metallic paint can have relatively high adhesive force on a metal surface by limiting the raw materials and dosage, and a formed paint film has excellent water resistance, corrosion resistance and wear resistance and can be used for decorating and protecting the metal surface; in addition, the water-based metallic paint is non-toxic and odorless, and can meet the requirement of environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of metallic paints, and in particular to a water-based metallic paint and a preparation method thereof. Background Art

[0002] In metal anti-corrosion construction, it is very important to choose the right type of paint, which is related to the protective effect and service life of the paint on the coated material. Anti-rust paint is a kind of paint that can protect the metal surface from chemical or electrochemical corrosion by the atmosphere, acid and alkali liquids, etc. The anti-rust paint used is roughly oily and water-based. Oily anti-rust paint contains toxic substances and is more harmful to operators; in addition, water-based metal anti-rust paint is non-toxic but has poor water resistance and salt spray resistance, and poor adhesion strength to metal and paint film mechanical properties.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a water-based metallic paint and a preparation method thereof. The water-based metallic paint of the present invention has high adhesion performance to the metal surface, and the formed paint film has excellent waterproof, anti-corrosion and wear-resistant properties.

[0005] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0006] The first aspect of the present invention provides a water-based metallic paint, which comprises the following components in parts by weight:

[0007] 18-22 parts of titanium dioxide, 20-24 parts of Xiuyan jade powder, 2-4 parts of zinc oxide, 110-130 parts of precipitated barium, 35-45 parts of zinc phosphate, 0.8-1.2 parts of sustained-release agent, 1.5-2.5 parts of bentonite, 8-12 parts of ethylene glycol, 6-10 parts of dispersant, 0.8-1.2 parts of wetting agent, 1.8-2.2 parts of defoaming agent, 18-22 parts of aluminum tripolyphosphate, 450-550 parts of water-based acrylic emulsion, 0.4-0.6 parts of stabilizer, 42-48 parts of film-forming aid, 1.8-2.2 parts of multifunctional additive, 3.4-4.6 parts of thickener, 0.8-1.2 parts of leveling agent, 18-22 parts of color paste, 7-9 parts of anti-flash rust agent, 0.8-1.2 parts of bactericide and 180-220 parts of water.

[0008] Preferably, the water-based metallic paint comprises the following components in parts by weight:

[0009] 20 parts of titanium dioxide, 22 parts of Xiuyan jade powder, 3 parts of zinc oxide, 120 parts of precipitated barium, 40 parts of zinc phosphate, 1 part of sustained-release agent, 2 parts of bentonite, 10 parts of ethylene glycol, 8 parts of dispersant, 1 part of wetting agent, 2 parts of defoaming agent, 20 parts of aluminum tripolyphosphate, 500 parts of water-based acrylic emulsion, 0.5 parts of stabilizer, 45 parts of film-forming aid, 2 parts of multifunctional additive, 4 parts of thickener, 1 part of leveling agent, 20 parts of color paste, 8 parts of anti-flash rust agent, 1 part of bactericide and 194.5 parts of water.

[0010] Preferably, the sustained-release agent is benzotriazole.

[0011] Preferably, the stabilizer consists of an ultraviolet absorber and a light stabilizer in equal amounts.

[0012] Preferably, the dispersant is a polyvinyl alcohol dispersant; the film-forming aid is dodecanol ester; the wetting agent is polyether-modified polysiloxane; and the multifunctional aid is multifunctional aid AMP-95.

[0013] Preferably, the thickener is selected from at least one of a polyurethane thickener, a polyacrylate thickener and a cellulose thickener;

[0014] The bactericide is pyrrolidone.

[0015] Preferably, the anti-flash rust agent is anti-flash rust agent YL-1206;

[0016] The leveling agent is a silane leveling agent.

[0017] The second aspect of the present invention provides a method for preparing the water-based metallic paint, the method comprising the following steps:

[0018] (a) adding a sustained-release agent to water under stirring conditions to disperse the mixture at high speed, and then adding bentonite to the water to mix the mixture to obtain a first mixture;

[0019] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium precipitate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate to disperse at high speed to obtain a second mixture;

[0020] (c) adding an aqueous acrylic emulsion, a stabilizer and a film-forming aid to the second mixture and stirring the mixture evenly, and then adding a multifunctional aid and mixing the mixture evenly to obtain a third mixture;

[0021] (d) adding a thickener, a leveling agent, a color paste, an anti-flash rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0022] Preferably, in step (a), the high-speed dispersion time is 5 to 8 minutes.

[0023] Preferably, in step (b), the high-speed dispersion time is 30 to 60 minutes;

[0024] In the step (c), the stirring time is 10 to 20 minutes.

[0025] Compared with the prior art, the beneficial effects of the present invention include at least:

[0026] The water-based metallic paint of the present invention is limited by the raw materials and the amounts used, so that the prepared water-based metallic paint can have high adhesion on the metal surface, and the formed paint film has excellent waterproof, anti-corrosion and wear-resistant properties, and can decorate and protect the metal surface; in addition, the water-based metallic paint of the present invention is non-toxic and odorless, and can meet environmental protection requirements. DETAILED DESCRIPTION

[0027] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0028] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0029] The embodiment of the present invention provides a water-based metallic paint, which includes the following components in parts by weight:

[0030] 18-22 parts of titanium dioxide, 20-24 parts of Xiuyan jade powder, 2-4 parts of zinc oxide, 110-130 parts of precipitated barium, 35-45 parts of zinc phosphate, 0.8-1.2 parts of sustained-release agent, 1.5-2.5 parts of bentonite, 8-12 parts of ethylene glycol, 6-10 parts of dispersant, 0.8-1.2 parts of wetting agent, 1.8-2.2 parts of defoaming agent, 18-22 parts of aluminum tripolyphosphate, 450-550 parts of water-based acrylic emulsion, 0.4-0.6 parts of stabilizer, 42-48 parts of film-forming aid, 1.8-2.2 parts of multifunctional additive, 3.4-4.6 parts of thickener, 0.8-1.2 parts of leveling agent, 18-22 parts of color paste, 7-9 parts of anti-flash rust agent, 0.8-1.2 parts of bactericide and 180-220 parts of water.

[0031] The water-based metallic paint of the present invention is limited by the raw materials and the amounts used, so that the prepared water-based metallic paint can have high adhesion on the metal surface, and the formed paint film has excellent waterproof, anti-corrosion and wear-resistant properties, and can decorate and protect the metal surface; in addition, the water-based metallic paint of the present invention is non-toxic and odorless, and can meet environmental protection requirements.

[0032] In one embodiment, the water-based metallic paint comprises the following components in parts by weight:

[0033] 20 parts of titanium dioxide, 22 parts of Xiuyan jade powder, 3 parts of zinc oxide, 120 parts of precipitated barium, 40 parts of zinc phosphate, 1 part of sustained-release agent, 2 parts of bentonite, 10 parts of ethylene glycol, 8 parts of dispersant, 1 part of wetting agent, 2 parts of defoaming agent, 20 parts of aluminum tripolyphosphate, 500 parts of water-based acrylic emulsion, 0.5 parts of stabilizer, 45 parts of film-forming aid, 2 parts of multifunctional additive, 4 parts of thickener, 1 part of leveling agent, 20 parts of color paste, 8 parts of anti-flash rust agent, 1 part of bactericide and 194.5 parts of water.

[0034] In one embodiment, the sustained release agent is benzotriazole.

[0035] In one embodiment, the stabilizer is composed of an ultraviolet absorber and a light stabilizer in equal amounts.

[0036] In one embodiment, the dispersant is a polyvinyl alcohol dispersant; the film-forming aid is dodecanol ester; the wetting agent is polyether-modified polysiloxane; and the multifunctional aid is multifunctional aid AMP-95.

[0037] In one embodiment, the thickener is selected from at least one of a polyurethane thickener, a polyacrylate thickener, and a cellulose thickener;

[0038] The bactericide is pyrrolidone.

[0039] In one embodiment, the anti-flash rust agent is anti-flash rust agent YL-1206;

[0040] In one embodiment, the leveling agent is a silane leveling agent.

[0041] Another embodiment of the present invention provides a method for preparing the water-based metallic paint, the method comprising the following steps:

[0042] (a) adding a sustained-release agent to water under stirring conditions to disperse the mixture at high speed, and then adding bentonite to the water to mix the mixture to obtain a first mixture;

[0043] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium precipitate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate to disperse at high speed to obtain a second mixture;

[0044] (c) adding an aqueous acrylic emulsion, a stabilizer and a film-forming aid to the second mixture and stirring the mixture evenly, and then adding a multifunctional aid and mixing the mixture evenly to obtain a third mixture;

[0045] (d) adding a thickener, a leveling agent, a color paste, an anti-flash rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0046] In one embodiment, in the step (a), the high-speed dispersion time can be any value between 5 and 8 minutes.

[0047] In one embodiment, in the step (b), the high-speed dispersion time can be any value between 30 and 60 minutes;

[0048] In the step (c), the stirring time can be any value between 10 and 20 minutes.

[0049] The technical solution of the present invention is further described in detail below through specific embodiments.

[0050] The raw materials used in the following examples are as follows:

[0051] The sustained-release agent is benzotriazole.

[0052] The stabilizer consists of equal amounts of UV absorber (UV326) and light stabilizer (light stabilizer 783);

[0053] The dispersant is polyvinyl alcohol PVA-2699;

[0054] The film-forming aid is dodecyl alcohol ester;

[0055] The wetting agent is polyether-modified polysiloxane;

[0056] The multifunctional additive is multifunctional additive AMP-95.

[0057] The thickener is selected from polyurethane thickener PU-16;

[0058] The fungicide is pyrrolidone.

[0059] The anti-flash rust agent is anti-flash rust agent YL-1206;

[0060] The leveling agent is organic silicon leveling agent HY-3018, polyether modified polydimethylsiloxane;

[0061] The defoaming agent is dimethylsiloxane.

[0062] Example 1

[0063] This embodiment is a water-based metallic paint, which includes the following components in parts by weight:

[0064] 18 parts of titanium dioxide, 24 parts of Xiuyan jade powder, 2 parts of zinc oxide, 110 parts of barium precipitate, 45 parts of zinc phosphate, 0.8 parts of sustained release agent, 2.5 parts of bentonite, 8 parts of ethylene glycol, 10 parts of dispersant, 0.8 parts of wetting agent, 2.2 parts of defoaming agent, 18 parts of aluminum tripolyphosphate, 450 parts of water-based acrylic emulsion, 0.6 parts of stabilizer, 42 parts of film-forming aid, 2.2 parts of multifunctional additive, 3.4 parts of thickener, 1.2 parts of leveling agent, 18 parts of color paste, 9 parts of anti-flash rust agent, 0.8 parts of bactericide and 220 parts of water.

[0065] The preparation method of the water-based metallic paint comprises the following steps:

[0066] (a) adding a sustained-release agent to water under stirring conditions and dispersing the mixture at high speed for 5 minutes, and then adding bentonite and stirring the mixture to obtain a first mixture;

[0067] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium precipitate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate and dispersing at high speed for 60 minutes to obtain a second mixture;

[0068] (c) adding the aqueous acrylic emulsion, the stabilizer and the film-forming aid to the second mixture and stirring for 10 minutes, and then adding the multifunctional additive and mixing to obtain a third mixture;

[0069] (d) adding a thickener, a leveling agent, a color paste, an anti-rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0070] Example 2

[0071] This embodiment is a water-based metallic paint, which includes the following components in parts by weight:

[0072] 22 parts of titanium dioxide, 20 parts of Xiuyan jade powder, 4 parts of zinc oxide, 130 parts of barium precipitate, 35 parts of zinc phosphate, 1.2 parts of sustained release agent, 1.5 parts of bentonite, 12 parts of ethylene glycol, 6 parts of dispersant, 1.2 parts of wetting agent, 1.8 parts of defoaming agent, 22 parts of aluminum tripolyphosphate, 550 parts of water-based acrylic emulsion, 0.4 parts of stabilizer, 48 parts of film-forming aid, 1.8 parts of multifunctional additive, 4.6 parts of thickener, 0.8 parts of leveling agent, 22 parts of color paste, 7 parts of anti-flash rust agent, 1.2 parts of bactericide and 180 parts of water.

[0073] The preparation method of the water-based metallic paint comprises the following steps:

[0074] (a) adding a sustained-release agent to water under stirring conditions and dispersing the mixture at high speed for 8 minutes, and then adding bentonite and stirring the mixture to obtain a first mixture;

[0075] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium sulfate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate and dispersing at high speed for 30 minutes to obtain a second mixture;

[0076] (c) adding the aqueous acrylic emulsion, the stabilizer and the film-forming aid to the second mixture and stirring for 20 minutes, and then adding the multifunctional additive and mixing to obtain a third mixture;

[0077] (d) adding a thickener, a leveling agent, a color paste, an anti-flash rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0078] Example 3

[0079] This embodiment is a water-based metallic paint, which includes the following components in parts by weight:

[0080] 20 parts of titanium dioxide, 22 parts of Xiuyan jade powder, 3 parts of zinc oxide, 120 parts of precipitated barium, 40 parts of zinc phosphate, 1 part of sustained-release agent, 2 parts of bentonite, 10 parts of ethylene glycol, 8 parts of dispersant, 1 part of wetting agent, 2 parts of defoaming agent, 20 parts of aluminum tripolyphosphate, 500 parts of water-based acrylic emulsion, 0.5 parts of stabilizer, 45 parts of film-forming aid, 2 parts of multifunctional additive, 4 parts of thickener, 1 part of leveling agent, 20 parts of color paste, 8 parts of anti-flash rust agent, 1 part of bactericide and 194.5 parts of water.

[0081] The preparation method of the water-based metallic paint comprises the following steps:

[0082] (a) adding a sustained-release agent to water under stirring conditions and dispersing the mixture at high speed for 6 minutes, and then adding bentonite and stirring the mixture to obtain a first mixture;

[0083] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium sulfate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate and dispersing at high speed for 40 minutes to obtain a second mixture;

[0084] (c) adding the aqueous acrylic emulsion, the stabilizer and the film-forming aid to the second mixture and stirring for 15 minutes, and then adding the multifunctional additive and mixing to obtain a third mixture;

[0085] (d) adding a thickener, a leveling agent, a color paste, an anti-flash rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0086] Comparative Example 1

[0087] This comparative example is a water-based metallic paint, which comprises the following components in parts by weight:

[0088] 42 parts of titanium dioxide, 3 parts of zinc oxide, 120 parts of barium precipitate, 40 parts of zinc phosphate, 1 part of sustained-release agent, 2 parts of bentonite, 10 parts of ethylene glycol, 8 parts of dispersant, 1 part of wetting agent, 2 parts of defoaming agent, 20 parts of aluminum tripolyphosphate, 500 parts of water-based acrylic emulsion, 0.5 parts of stabilizer, 45 parts of film-forming aid, 2 parts of multifunctional additive, 4 parts of thickener, 1 part of leveling agent, 20 parts of color paste, 8 parts of anti-flash rust agent, 1 part of bactericide and 194.5 parts of water.

[0089] The preparation method of the water-based metallic paint comprises the following steps:

[0090] (a) adding a sustained-release agent to water under stirring conditions and dispersing the mixture at high speed for 6 minutes, and then adding bentonite and stirring the mixture to obtain a first mixture;

[0091] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium precipitate, zinc oxide, zinc phosphate and aluminum tripolyphosphate and dispersing at high speed for 40 minutes to obtain a second mixture;

[0092] (c) adding the aqueous acrylic emulsion, the stabilizer and the film-forming aid to the second mixture and stirring for 15 minutes, and then adding the multifunctional additive and mixing to obtain a third mixture;

[0093] (d) adding a thickener, a leveling agent, a color paste, an anti-flash rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0094] Comparative Example 2

[0095] This comparative example is a water-based metallic paint, which comprises the following components in parts by weight:

[0096] 50 parts of titanium dioxide, 52 parts of Xiuyan jade powder, 3 parts of zinc oxide, 60 parts of barium precipitate, 40 parts of zinc phosphate, 1 part of sustained release agent, 2 parts of bentonite, 10 parts of ethylene glycol, 8 parts of dispersant, 1 part of wetting agent, 2 parts of defoaming agent, 20 parts of aluminum tripolyphosphate, 500 parts of water-based acrylic emulsion, 0.5 parts of stabilizer, 45 parts of film-forming aid, 2 parts of multifunctional additive, 4 parts of thickener, 1 part of leveling agent, 20 parts of color paste, 8 parts of anti-flash rust agent, 1 part of bactericide and 194.5 parts of water.

[0097] The preparation method of the water-based metallic paint comprises the following steps:

[0098] (a) adding a sustained-release agent to water under stirring conditions and dispersing the mixture at high speed for 6 minutes, and then adding bentonite and stirring the mixture to obtain a first mixture;

[0099] (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium sulfate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate and dispersing at high speed for 40 minutes to obtain a second mixture;

[0100] (c) adding the aqueous acrylic emulsion, the stabilizer and the film-forming aid to the second mixture and stirring for 15 minutes, and then adding the multifunctional additive and mixing to obtain a third mixture;

[0101] (d) adding a thickener, a leveling agent, a color paste, an anti-rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

[0102] Experimental example

[0103] Obtain the water-based metallic paints prepared in Example 3 and Comparative Examples 1-2 respectively;

[0104] Test the adhesion of different water-based metallic paints according to the method in ASTM D3359; 0 to 5, the higher the better

[0105] Test the hardness of the paint film according to the method in GB / T6739-2006 standard;

[0106] Test water resistance according to the method in GB / T1733-1993 standard;

[0107] The salt spray resistance is tested according to the method in GB / T1771-2007 standard;

[0108] The experimental results are shown in Table 1:

[0109] Table 1

[0110]

[0111] From Table 1, we can see that:

[0112] Compared with the comparative example, the water-based metal prepared in the present application has better overall performance and better waterproof and salt spray resistance.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A water-based metallic paint, characterized in that: The water-based metallic paint comprises the following components in parts by weight: 18-22 parts of titanium dioxide, 20-24 parts of Xiuyan jade powder, 2-4 parts of zinc oxide, 110-130 parts of precipitated barium, 35-45 parts of zinc phosphate, 0.8-1.2 parts of sustained-release agent, 1.5-2.5 parts of bentonite, 8-12 parts of ethylene glycol, 6-10 parts of dispersant, 0.8-1.2 parts of wetting agent, 1.8-2.2 parts of defoaming agent, 18-22 parts of aluminum tripolyphosphate, 450-550 parts of water-based acrylic emulsion, 0.4-0.6 parts of stabilizer, 42-48 parts of film-forming aid, 1.8-2.2 parts of multifunctional additive, 3.4-4.6 parts of thickener, 0.8-1.2 parts of leveling agent, 18-22 parts of color paste, 7-9 parts of anti-flash rust agent, 0.8-1.2 parts of bactericide and 180-220 parts of water.

2. The water-based metallic paint according to claim 1, characterized in that: The water-based metallic paint comprises the following components in parts by weight: 20 parts of titanium dioxide, 22 parts of Xiuyan jade powder, 3 parts of zinc oxide, 120 parts of precipitated barium, 40 parts of zinc phosphate, 1 part of sustained-release agent, 2 parts of bentonite, 10 parts of ethylene glycol, 8 parts of dispersant, 1 part of wetting agent, 2 parts of defoaming agent, 20 parts of aluminum tripolyphosphate, 500 parts of water-based acrylic emulsion, 0.5 parts of stabilizer, 45 parts of film-forming aid, 2 parts of multifunctional additive, 4 parts of thickener, 1 part of leveling agent, 20 parts of color paste, 8 parts of anti-flash rust agent, 1 part of bactericide and 194.5 parts of water.

3. The water-based metallic paint according to claim 1 or 2, characterized in that: The sustained-release agent is benzotriazole.

4. The water-based metallic paint according to claim 1 or 2, characterized in that: The stabilizer is composed of an ultraviolet absorber and a light stabilizer in equal amounts.

5. The water-based metallic paint according to claim 1 or 2, characterized in that: The dispersant is a polyvinyl alcohol dispersant; the film-forming aid is dodecanol ester; the wetting agent is polyether-modified polysiloxane; and the multifunctional aid is multifunctional aid AMP-95.

6. The water-based metallic paint according to claim 1 or 2, characterized in that: The thickener is selected from at least one of a polyurethane thickener, a polyacrylate thickener and a cellulose thickener; The bactericide is pyrrolidone.

7. The water-based metallic paint according to claim 1 or 2, characterized in that: The anti-flash rust agent is anti-flash rust agent YL-1206; The leveling agent is a silane leveling agent.

8. The method for preparing a water-based metallic paint according to any one of claims 1 to 7, characterized in that: The preparation method comprises the following steps: (a) adding a sustained-release agent to water under stirring conditions to disperse the mixture at high speed, and then adding bentonite to the water to mix the mixture to obtain a first mixture; (b) adding a dispersant, a wetting agent, ethylene glycol and a defoamer to the first mixture and stirring well, and then adding titanium dioxide, barium precipitate, xiuyan powder, zinc oxide, zinc phosphate and aluminum tripolyphosphate to disperse at high speed to obtain a second mixture; (c) adding an aqueous acrylic emulsion, a stabilizer and a film-forming aid to the second mixture and stirring the mixture evenly, and then adding a multifunctional aid and mixing the mixture evenly to obtain a third mixture; (d) adding a thickener, a leveling agent, a color paste, an anti-flash rust agent and a bactericide to the third mixture and stirring the mixture to obtain the water-based metallic paint.

9. The preparation method according to claim 8, characterized in that: In the step (a), the high-speed dispersion time is 5 to 8 minutes.

10. The preparation method according to claim 8, characterized in that: In the step (b), the high-speed dispersion time is 30 to 60 minutes; In the step (c), the stirring time is 10 to 20 minutes.

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