Quick-drying water-based acrylic anticorrosive paint and preparation method thereof

Abstract

The invention discloses a quick-drying water-based acrylic acid anticorrosive coating and a preparation method thereof, and the coating comprises the following raw material components in parts by weight: 50-57 parts by weight of a single-component water-based acrylic acid dispersion, 17-18 parts by weight of pigment filler, 16.5-18.0 parts by weight of deionized water, 0.1-0.2 part by weight of a dispersant, 0.4-0.7 part by weight of a defoaming agent, 0.1-0.2 part by weight of a mildew preventive, 0.2-0.3 part by weight of a wetting agent and 0.5-0.8 part by weight of a thickening agent, the anti-rust paint is prepared from the following components in parts by weight: 100 parts of water, 5.0-10.5 parts of a coalescing agent, 0.4-1.0 part of a humectant, 0.4-0.7 part of an anti-flash-rust agent and 0.5-0.7 part of a pH regulator. The coating provided by the invention has the advantages that the drying time is less than 15 minutes when the dry film thickness is 25 microns, the flexibility is 1mm, the adhesive force is grade 1, the impact resistance is 50cm, the 60-degree gloss is more than or equal to 70, the coating does not blister, rust, fall and crack after resisting 3% NaCl for 168 hours, the coating does not blister, rust, fall and crack after resisting 5% H2SO4 for 24 hours, and the coating does not blister, rust, fall and crack after resisting salt mist for 288 hours; and the coating does not blister, rust, fall off and crack after being water-resistant for 216 hours.

Description

Technical Field

[0001] The present application relates to the field of anti-corrosion coatings, and in particular to a quick-drying water-based acrylic anti-corrosion coating and a preparation method thereof. Background Art

[0002] In recent years, due to the extensive use of traditional solvent-based anti-corrosion coatings, many volatile organic compounds (VOCs) are uncontrolledly discharged into the atmosphere, which not only has a great impact on the ecological environment, but also may pose a greater threat to human health. Therefore, with the increasing pressure on environmental protection, people's environmental awareness has gradually increased. In the context of the country's strengthening of environmental pollution control and the improvement of relevant environmental protection laws and regulations, the water-based anti-corrosion coating is an inevitable trend in the development of the current anti-corrosion coating industry. Water-based coatings with the characteristics of a wide variety, safety, reliability, and a wide range of applications have also become a research hotspot for environmentally friendly coatings.

[0003] Water-based acrylic paints have the advantages of safety, environmental protection, low cost, color and gloss retention, alkali resistance, weather resistance, pollution resistance, aging resistance, diversified raw material sources, and simple synthesis and processing, and have attracted the attention of many scientific researchers. However, in conventional water-based acrylic paints, the resin contains a large number of hydrophilic groups such as hydroxyl and carboxyl groups, which reduces the water resistance, salt spray resistance, and chemical resistance of the paint film; defects such as poor adhesion, low gloss, and slow drying speed also greatly restrict its application in the fields of petroleum, refining, etc. At the same time, traditional water-based acrylic paints are prone to sagging during spraying, and often face the technical problem of gun blocking during long-term spraying, which not only consumes a lot of manpower and material resources, but also affects normal production. Summary of the invention

[0004] The present application provides a quick-drying water-based acrylic anti-corrosion coating and a preparation method thereof, which can solve the technical problems of poor adhesion, low gloss, slow drying speed, and poor water resistance and salt spray resistance of conventional water-based acrylic coatings. It not only ensures that the original paint has good stability, reduces the precipitation of impurities, and ensures normal spraying, but also is easy to operate and is conducive to industrial production.

[0005] This application adopts the following technical solutions:

[0006] The present application provides a quick-drying water-based acrylic anti-corrosion coating, comprising the following raw material components in parts by weight: 50 to 57 parts by weight of a single-component water-based acrylic dispersion, 17 to 18 parts by weight of pigments and fillers, 16.5 to 18.0 parts by weight of deionized water, 0.1 to 0.2 parts by weight of a dispersant, 0.4 to 0.7 parts by weight of a defoamer, 0.1 to 0.2 parts by weight of a mildew preventer, 0.2 to 0.3 parts by weight of a wetting agent, 0.5 to 0.8 parts by weight of a thickener, 5.0 to 10.5 parts by weight of a film-forming aid, 0.4 to 1.0 parts by weight of a humectant, 0.4 to 0.7 parts by weight of an anti-flash rust agent, and 0.5 to 0.7 parts by weight of a pH adjuster.

[0007] Furthermore, the quick-drying water-based acrylic anti-corrosion coating contains the following raw material components in parts by weight: 50 to 57 parts by weight of a single-component water-based acrylic dispersion, 17 to 18 parts by weight of pigments and fillers, 17.0 to 18.0 parts by weight of deionized water, 0.15 to 0.20 parts by weight of a dispersant, 0.55 to 0.70 parts by weight of a defoamer, 0.15 to 0.20 parts by weight of a mildew preventer, 0.25 to 0.30 parts by weight of a wetting agent, 0.6 to 0.8 parts by weight of a thickener, 7.5 to 10.5 parts by weight of a film-forming aid, 0.8 to 1.0 parts by weight of a humectant, 0.55 to 0.7 parts by weight of an anti-flash rust agent, and 0.6 to 0.7 parts by weight of a pH regulator.

[0008] Furthermore, the quick-drying water-based acrylic anti-corrosion coating contains the following raw material components in parts by weight: 54 parts by weight of a single-component water-based acrylic dispersion, 17 parts by weight of a pigment and filler, 17 parts by weight of deionized water, 0.2 parts by weight of a dispersant, 0.65 parts by weight of a defoamer, 0.20 parts by weight of a mildewcide, 0.25 parts by weight of a wetting agent, 0.8 parts by weight of a thickener, 7.5 parts by weight of a film-forming aid, 1.0 parts by weight of a humectant, 0.7 parts by weight of an anti-flash rust agent, and 0.7 parts by weight of a pH adjuster.

[0009] Further, the dispersant includes sodium salt of polycarboxylate. The defoamer includes polysiloxane solution. The mildew inhibitor includes isothiazolinone derivatives. The wetting agent includes polyether modified dimethylsiloxane. The thickener includes cellulose ether and associative polyurethane thickener. The film-forming aid includes one or more of propylene glycol monobutyl ether, alcohol ester-12, and dipropylene glycol monobutyl ether. The humectant includes a low molecular weight polyol solution. The flash rust inhibitor includes an organic calcium complex. The pH adjuster includes ethanolamine compounds.

[0010] The present application also provides a method for preparing the above-mentioned quick-drying water-based acrylic anti-corrosion coating, comprising the following steps: weigh each raw material component according to the formula amount. Add the whole formula amount of deionized water, dispersant, defoamer, and pH adjuster into the material cylinder and stir, then add the whole formula amount of pigment and filler, and continue stirring to obtain a premixed slurry. After waiting for the premixed slurry to cool, grind the premixed slurry to obtain a grinding slurry. Under stirring, mix the grinding slurry with the whole formula amount of a single-component water-based acrylic dispersion, then add a part of the formula amount of thickener, and then continue stirring, then add the whole formula amount of mildew inhibitor, wetting agent, film-forming aid, moisturizer, anti-flash rust agent and the remaining formula amount of thickener, and then continue stirring to obtain a quick-drying water-based acrylic anti-corrosion coating.

[0011] Furthermore, when all the formula amounts of deionized water, dispersant, defoamer and pH adjuster are added into the material tank and stirred, the mixture is dispersed for 15-20 minutes at a rotation speed of 400-600 r / min.

[0012] Furthermore, after adding all the formulated pigments and fillers, the speed is increased to 800-900 r / min and the dispersion is continued for 25-30 minutes during the stirring process.

[0013] Furthermore, when the premixed water slurry is ground, the premixed water slurry is ground by a sand mill to a fineness of less than 20 microns.

[0014] Furthermore, after adding a portion of the thickener, the stirring time is 15-20 minutes and the speed is 600-700 r / min.

[0015] Furthermore, after adding the entire amount of the mildew inhibitor, wetting agent, film-forming aid, humectant, flash rust inhibitor and the remaining amount of the thickener, the rotation speed is adjusted to 1000-1200 r / min and the stirring is continued for 30-40 minutes.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] 1. The quick-drying water-based acrylic anti-corrosion coating of the present application uses a one-component water-based acrylic dispersion. The coating film formed by the quick-drying one-component water-based acrylic dispersion has the advantages of high gloss, good adhesion, good anti-sagging, fast drying speed, excellent water resistance and salt spray resistance, etc., ensuring construction adaptability.

[0018] 2. The quick-drying water-based acrylic anti-corrosion coating of the present application uses cellulose ether and associative polyurethane thickeners and a step-by-step thickening process, thereby solving the problem of excessive impurities in the production process of water-based coatings.

[0019] 3. The moisturizer used in the quick-drying water-based acrylic anti-corrosion coating of the present application is a low-molecular polyol solution. Adding the moisturizer is beneficial to delaying surface drying without affecting the drying time in the production process, avoiding a series of problems caused by skinning, thereby increasing the stability of the coating during long-term use.

[0020] 4. The quick-drying water-based acrylic anti-corrosion coating of the present application has a drying time of less than 15 minutes at a dry film thickness of 25 μm, and has good physical and chemical properties, flexibility 1 mm, adhesion level 1, impact resistance 50 cm, 60-degree gloss ≥ 70, 3% NaCl resistance for 168 hours without blistering, rusting, falling off, or cracking, 5% H2SO4 resistance for 24 hours without blistering, rusting, falling off, or cracking, salt spray resistance for 288 hours without blistering, rusting, falling off, or cracking, and water resistance for 216 hours without blistering, rusting, falling off, or cracking.

[0021] 5. The quick-drying water-based acrylic anti-corrosion coating of the present application can be used for the anti-corrosion engineering of oil casing and steel structures of petroleum engineering construction and refinery enterprises. DETAILED DESCRIPTION

[0022] The technical methods in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0023] The present application provides a quick-drying water-based acrylic anti-corrosion coating, comprising the following raw material components in parts by weight: 50 to 57 parts by weight of a single-component water-based acrylic dispersion, 17 to 18 parts by weight of pigments and fillers, 16.5 to 18.0 parts by weight of deionized water, 0.1 to 0.2 parts by weight of a dispersant, 0.4 to 0.7 parts by weight of a defoamer, 0.1 to 0.2 parts by weight of a mildew preventer, 0.2 to 0.3 parts by weight of a wetting agent, 0.5 to 0.8 parts by weight of a thickener, 5.0 to 10.5 parts by weight of a film-forming aid, 0.4 to 1.0 parts by weight of a humectant, 0.4 to 0.7 parts by weight of an anti-flash rust agent, and 0.5 to 0.7 parts by weight of a pH adjuster.

[0024] For example, the single-component water-based acrylic dispersion is 50, 54, 57 parts by weight. The pigment and filler are 17, 17.5, 18 parts by weight. The deionized water is 16.5, 17, 18.0 parts by weight. The dispersant is 0.1, 0.15, 0.2 parts by weight. The defoamer is 0.4, 0.55, 0.65, 0.7 parts by weight. The mildew inhibitor is 0.1, 0.15, 0.2 parts by weight. The wetting agent is 0.2, 0.25, 0.3 parts by weight. The thickener is 0.5, 0.6, 0.8 parts by weight. The film-forming aid is 5.0, 7.5, 10.5 parts by weight. The humectant is 0.4, 0.8, 1.0 parts by weight. The flash rust inhibitor is 0.4, 0.55, 0.7 parts by weight. The pH adjuster is 0.5, 0.6, 0.7 and other parts by weight.

[0025] Preferably, the quick-drying water-based acrylic anti-corrosion coating comprises the following raw material components in parts by weight: 50 to 57 parts by weight of a single-component water-based acrylic dispersion, 17 to 18 parts by weight of pigments and fillers, 17.0 to 18.0 parts by weight of deionized water, 0.15 to 0.20 parts by weight of a dispersant, 0.55 to 0.70 parts by weight of a defoamer, 0.15 to 0.20 parts by weight of a mildewcide, 0.25 to 0.30 parts by weight of a wetting agent, 0.6 to 0.8 parts by weight of a thickener, 7.5 to 10.5 parts by weight of a film-forming aid, 0.8 to 1.0 parts by weight of a humectant, 0.55 to 0.7 parts by weight of an anti-flash rust agent, and 0.6 to 0.7 parts by weight of a pH regulator. More preferably, the quick-drying water-based acrylic anti-corrosion coating comprises the following raw material components in parts by weight: 54 parts by weight of a single-component water-based acrylic dispersion, 17 parts by weight of pigments and fillers, 17 parts by weight of deionized water, 0.2 parts by weight of a dispersant, 0.65 parts by weight of a defoamer, 0.20 parts by weight of a mildewcide, 0.25 parts by weight of a wetting agent, 0.8 parts by weight of a thickener, 7.5 parts by weight of a film-forming aid, 1.0 parts by weight of a humectant, 0.7 parts by weight of an anti-flash rust agent, and 0.7 parts by weight of a pH adjuster.

[0026] The dispersant is sodium salt of polycarboxylate. The defoamer is polysiloxane solution. The mildew inhibitor is an isothiazolinone derivative. The wetting agent is polyether modified dimethylsiloxane. The thickener is cellulose ether and associative polyurethane thickener. The film-forming aid is one or more of propylene glycol monobutyl ether, alcohol ester-12, and dipropylene glycol monobutyl ether, such as a mixture of propylene glycol monobutyl ether, alcohol ester-12 and dipropylene glycol monobutyl ether. The humectant is a low molecular weight polyol solution. The flash rust inhibitor is an organic calcium complex. The pH adjuster is an ethanolamine compound.

[0027] The present application also provides a method for preparing the above-mentioned quick-drying water-based acrylic anti-corrosion coating, comprising the following steps:

[0028] (1) Material preparation steps: accurately weigh each raw material component strictly according to the formula;

[0029] (2) Dispersion step: Add all the formulated amounts of deionized water, dispersant, defoamer, and pH adjuster into a material tank and stir, then add all the formulated amounts of pigments and fillers, and continue stirring to obtain a premixed water slurry.

[0030] In the above steps, when adding all the formula amounts of deionized water, dispersant, defoamer, and pH adjuster into the material tank and stirring, disperse for 15-20 minutes at a speed of 400-600 r / min. For example, the speed is 400, 500, 600 r / min, etc., disperse for 15, 18, 20 minutes, etc. After adding all the formula amounts of pigments and fillers, increase the speed to 800-900 r / min and continue to disperse for 25-30 minutes. For example, the speed is 800, 850, 900 r / min, etc., disperse for 25, 28, 30 minutes, etc.

[0031] (3) Grinding step: After the premixed slurry is cooled, the premixed slurry is ground to obtain a ground slurry.

[0032] In the above steps, when the premixed water slurry is ground, the premixed water slurry is ground by a sand mill to a fineness of less than 20 microns.

[0033] (4) Mixing step: Under stirring, the grinding water slurry is mixed with the whole formula amount of the single-component water-based acrylic dispersion, and then a part of the formula amount of the thickener is added, and then stirring is continued, and then the whole formula amount of the mildew inhibitor, wetting agent, film-forming aid, moisturizing agent, flash rust inhibitor and the remaining formula amount of the thickener are added, and then stirring is continued to obtain a quick-drying water-based acrylic anti-corrosion coating.

[0034] In the above steps, after adding a part of the formula amount of thickener, the stirring time is 15-20 minutes and the speed is 600-700r / min. For example, the stirring time is 15, 18, 20 minutes, etc., and the speed is 600, 650, 700r / min, etc. After adding the full formula amount of mildew inhibitor, wetting agent, film-forming aid, moisturizer, flash rust inhibitor and the remaining formula amount of thickener, the speed is adjusted to 1000-1200r / min and stirred for 30-40 minutes. For example, the speed is 1000, 1100, 1200r / min, etc., and stirred for 30, 35, 40 minutes, etc.

[0035] The following is a detailed description with reference to specific embodiments:

[0036] Example 1

[0037] formula:

[0038] 10g per weight portion, 50 weight portions of single-component aqueous acrylic dispersion, 18 weight portions of pigments and fillers, 18 weight portions of deionized water, 0.1 weight portion of dispersant, 0.7 weight portion of defoamer, 0.1 weight portion of mildewcide, 0.2 weight portion of wetting agent, 0.8 weight portion of thickener, 10.5 weight portion of film-forming aid, 0.4 weight portion of humectant, 0.7 weight portion of anti-flash rust agent, and 0.5 weight portion of pH adjuster.

[0039] Preparation process:

[0040] Preparation steps: Accurately weigh each raw material component strictly according to the formula.

[0041] Dispersion step: add all the formula amounts of deionized water, dispersant, defoamer, and pH adjuster into the material tank and stir thoroughly. Disperse for 15 minutes at a speed of 400 r / min. Then add all the formula amounts of pigments and fillers, increase the speed to 800 r / min, and continue dispersing for 25 minutes to obtain a premixed slurry.

[0042] Grinding step: After the premixed slurry is cooled, it is ground into a fineness of less than 20 microns by a sand mill to obtain a ground slurry.

[0043] Mixing step: Under stirring, the obtained grinding water slurry is fully mixed with the whole formula amount of the single-component water-based acrylic dispersion, 50% of the formula amount of thickener is added, the stirring time is 15 minutes, the rotation speed is 600r / min, and then the whole formula amount of mildew inhibitor, wetting agent, film-forming aid, moisturizer, anti-flash rust agent and the remaining 50% of the formula amount of thickener are added, the rotation speed is adjusted to 1000r / min, and stirring is carried out for more than 30 minutes to ensure uniform dispersion, and finally a quick-drying water-based acrylic anti-corrosion coating is obtained.

[0044] The comprehensive properties of the quick-drying water-based acrylic anti-corrosion coating obtained in this example were tested, and all properties of the obtained coating and its coating film are shown in Table 1.

[0045] Table 1 Performance of the quick-drying water-based acrylic anticorrosive coating obtained in Example 1

[0046] Test items Test Results Coating appearance The coating is full and has no defects Status in container Uniform state without abnormality Storage stability Uniform state without abnormality Gloss (60°) / % 71 Surface drying time, min 12 Flexibility, mm 1 Impact resistance, cm 50 Adhesion, Grade 1 Water resistance (room temperature 216h) The coating is intact Resistant to 3% salt water (room temperature 168h) The coating is intact <![CDATA[Resistant to 5% H2SO4 (at room temperature for 24 hours)]]> The coating is intact Salt spray resistance (288h) The coating is intact

[0047] Example 2

[0048] formula:

[0049] 10g per weight portion, 57 weight portions of single-component aqueous acrylic dispersion, 17.7 weight portions of pigments and fillers, 16.5 weight portions of deionized water, 0.2 weight portions of dispersant, 0.5 weight portions of defoaming agent, 0.15 weight portions of mildewproof agent, 0.25 weight portions of wetting agent, 0.6 weight portions of thickener, 5 weight portions of film-forming aid, 1 weight portion of humectant, 0.4 weight portions of anti-flash rust agent, and 0.7 weight portions of pH adjuster.

[0050] Preparation process:

[0051] Preparation steps: Accurately weigh each raw material component strictly according to the formula.

[0052] Dispersion step: add all the formula amounts of deionized water, dispersant, defoamer, and pH adjuster into the material tank and stir thoroughly. Disperse for 20 minutes at a speed of 600 r / min. Then add all the formula amounts of pigments and fillers, increase the speed to 900 r / min, and continue dispersing for 30 minutes to obtain a premixed slurry.

[0053] Grinding step: After the premixed slurry is cooled, it is ground into a fineness of less than 20 microns by a sand mill to obtain a ground slurry.

[0054] Mixing step: Under stirring, the obtained grinding water slurry is fully mixed with the whole formula amount of the single-component water-based acrylic dispersion, 50% of the formula amount of thickener is added first, the stirring time is 20 minutes, the rotation speed is 700r / min, and then the whole formula amount of mildew inhibitor, wetting agent, film-forming aid, moisturizer, anti-flash rust agent and the remaining 50% of the formula amount of thickener are added, the rotation speed is adjusted to 1200r / min, and stirring is carried out for more than 40 minutes to ensure uniform dispersion, and finally a quick-drying water-based acrylic anti-corrosion coating is obtained.

[0055] The comprehensive properties of the quick-drying water-based acrylic anti-corrosion coating obtained in this example were tested, and all properties of the obtained coating and its coating film are shown in Table 2.

[0056] Table 2 Performance of the quick-drying water-based acrylic anticorrosive coating obtained in Example 2

[0057] Test items Test Results Coating appearance The coating is full and has no defects Status in container Uniform state without abnormality Storage stability Uniform state without abnormality Gloss (60°) / % 75 Surface drying time, min 11 Flexibility, mm 1 Impact resistance, cm 50 Adhesion, Grade 1 Water resistance (room temperature 216h) The coating is intact Resistant to 3% salt water (room temperature 168h) The coating is intact <![CDATA[Resistant to 5% H2SO4 (at room temperature for 24 h)]]> The coating is intact Salt spray resistance (288h) The coating is intact

[0058] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application rather than to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present application.

Claims

1. A quick-drying water-based acrylic anti-corrosion coating, characterized in that: Contains the following raw material components in parts by weight: The invention comprises 50 to 57 parts by weight of a single-component aqueous acrylic dispersion, 17 to 18 parts by weight of a pigment and filler, 16.5 to 18.0 parts by weight of deionized water, 0.1 to 0.2 parts by weight of a dispersant, 0.4 to 0.7 parts by weight of a defoamer, 0.1 to 0.2 parts by weight of a mildew preventer, 0.2 to 0.3 parts by weight of a wetting agent, 0.5 to 0.8 parts by weight of a thickener, 5.0 to 10.5 parts by weight of a film-forming aid, 0.4 to 1.0 parts by weight of a humectant, 0.4 to 0.7 parts by weight of an anti-flash rust agent and 0.5 to 0.7 parts by weight of a pH adjuster.

2. A quick-drying water-based acrylic anti-corrosion coating as claimed in claim 1, characterized in that: Contains the following raw material components in parts by weight: The invention comprises 50 to 57 parts by weight of a single-component aqueous acrylic dispersion, 17 to 18 parts by weight of pigments and fillers, 17.0 to 18.0 parts by weight of deionized water, 0.15 to 0.20 parts by weight of a dispersant, 0.55 to 0.70 parts by weight of a defoamer, 0.15 to 0.20 parts by weight of a mildew preventer, 0.25 to 0.30 parts by weight of a wetting agent, 0.6 to 0.8 parts by weight of a thickener, 7.5 to 10.5 parts by weight of a film-forming aid, 0.8 to 1.0 parts by weight of a humectant, 0.55 to 0.7 parts by weight of an anti-flash rust agent and 0.6 to 0.7 parts by weight of a pH regulator.

3. A quick-drying water-based acrylic anti-corrosion coating as claimed in claim 1, characterized in that: Contains the following raw material components in parts by weight: 54 parts by weight of one-component aqueous acrylic dispersion, 17 parts by weight of pigments and fillers, 17 parts by weight of deionized water, 0.2 parts by weight of dispersant, 0.65 parts by weight of defoamer, 0.20 parts by weight of mildewcide, 0.25 parts by weight of wetting agent, 0.8 parts by weight of thickener, 7.5 parts by weight of film-forming aid, 1.0 parts by weight of humectant, 0.7 parts by weight of anti-flash rust agent, and 0.7 parts by weight of pH adjuster.

4. A quick-drying water-based acrylic anti-corrosion coating as claimed in claim 1, characterized in that: The dispersant includes sodium salt of polycarboxylate; the defoamer includes polysiloxane solution; the mildew inhibitor includes isothiazolinone derivatives; the wetting agent includes polyether modified dimethylsiloxane; the thickener includes cellulose ether and associative polyurethane thickener; the film-forming aid includes one or more of propylene glycol monobutyl ether, alcohol ester-12, and dipropylene glycol monobutyl ether; the humectant includes a low molecular weight polyol solution; the flash rust inhibitor includes an organic calcium complex; and the pH adjuster includes an ethanolamine compound.

5. A method for preparing a quick-drying water-based acrylic anti-corrosion coating according to any one of claims 1 to 4, characterized in that: The following steps are involved: Weigh each raw material component according to the formula; Add all the formula amounts of deionized water, dispersant, defoamer, and pH adjuster into the material tank and stir, then add all the formula amounts of pigments and fillers, and continue stirring to obtain a premixed water slurry; After the premixed slurry is cooled, the premixed slurry is ground to obtain a ground slurry; Under stirring, the grinding water slurry is mixed with the whole formula amount of the single-component water-based acrylic dispersion, and then a part of the formula amount of the thickener is added, and then stirring is continued, and then the whole formula amount of the mildew inhibitor, wetting agent, film-forming aid, moisturizing agent, anti-flash rust agent and the remaining formula amount of the thickener are added, and then stirring is continued to obtain a quick-drying water-based acrylic anti-corrosion coating.

6. The preparation method according to claim 5, characterized in that: Add all the formulated amounts of deionized water, dispersant, defoamer and pH adjuster into the material tank and stir, then disperse for 15-20 minutes at a rotation speed of 400-600 r / min.

7. The preparation method according to claim 5, characterized in that: After adding all the pigments and fillers, continue stirring and increase the speed to 800-900r / min and continue dispersing for 25-30 minutes.

8. The preparation method according to claim 5, characterized in that: When the premixed water slurry is ground, the premixed water slurry is ground by a sand mill to a fineness of less than 20 microns.

9. The preparation method according to claim 5, characterized in that: After adding a portion of the thickener, the stirring is continued for 15-20 minutes at a speed of 600-700 r / min.

10. The preparation method according to claim 5, characterized in that: After adding all the formula amounts of the mildew inhibitor, wetting agent, film-forming aid, humectant, flash rust inhibitor and the remaining formula amount of the thickener, the rotation speed is adjusted to 1000-1200 r / min and the stirring is continued for 30-40 minutes.