Quick-dry salt-spray-resistant industrial water-based paint and preparation method thereof

Abstract

The invention discloses a quick-dry salt-spray-resistant industrial water-based paint and a preparation method thereof, and relates to the technical field of paints. Cerium zirconium oxide is used for preparing nanofiber filler, cellulose is added into a precursor of the nanofiber filler, a carbon substance is obtained through calcination, then the mechanical property of the filler is enhanced, and an interpenetrating network structure with cerium oxide-zirconium oxide particles as nodes is formed in a hybrid material, so that the mechanical property of the coating is enhanced; then the ionic liquid is adsorbed on the carbon substance, then the nano filler is effectively modified, the mechanical property and corrosion resistance of the filler are improved, cerium oxide can inhibit the metal corrosion process, and in the later stage of corrosion prevention operation, cerium oxide and iron oxyhydroxide form a compact and stable surface rust layer structure, the corrosion rate is effectively decreased, and the corrosion resistance of the nano filler is improved. Zirconium oxide can greatly eliminate local micro-current corrosion of carbon substances and metal, and the corrosion resistance of the coating is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and specifically to a quick-drying industrial waterborne coating resistant to salt spray and a preparation method thereof. Background Art

[0002] Corrosion is the phenomenon that metal interacts with the surrounding environmental medium, resulting in metal damage. The losses caused by corrosion are huge, seriously affecting economic and ecological security. According to relevant reports, in 2014, corrosion brought losses of 2 trillion yuan to the whole country, accounting for 3% of the country's GDP. Corrosion can also cause major accidents such as bridge collapses and pipeline leaks, seriously endangering human life safety. For example, the aluminum alloy on the aircraft is exposed to the air for a long time, resulting in large-area corrosion, severely reducing the mechanical properties and other properties of the aluminum alloy, shortening the service life of the aircraft, and causing huge economic losses. Engineering materials serving in the marine environment not only suffer from corrosion, but also face another serious problem, that is, marine biofouling. Marine biofouling is the attachment of bacteria, microorganisms, plants and animals to the hull and subsea equipment, which is a major global problem at present. The fouling organisms growing on the ship will promote surface degradation, damage the propeller and increase the resistance, resulting in high fuel consumption and excessive maintenance costs. At the same time, the higher fuel consumption caused by biofouling will also produce more greenhouse gases, indirectly increasing the speed of global warming.

[0003] Metal materials chemically react with the medium in the environment under natural conditions and degenerate or are damaged, which is the corrosion phenomenon. Industries such as electric power, chemical engineering, and machinery use a large number of metal components such as steel. These metals are corroded and damaged year after year under the action of their surrounding media, bringing huge economic losses and serious consequences such as accidents. The problem of metal corrosion has indeed brought losses that cannot be ignored to the national economy. It not only causes direct economic losses, but also is an extreme waste of resources and energy, and seriously pollutes the natural environment. For a long time, scientific researchers have been committed to studying metal anti-corrosion. Covering an anti-corrosion coating on the metal surface is considered the most effective method. To this day, anti-corrosion coatings still occupy a large market share by paints. Because they contain a large amount of organic compounds (VOCs) that are easy to volatilize into the environment, they not only pose safety hazards, but also threaten the surrounding environment. And waterborne anti-corrosion coatings, as environmentally friendly coatings, meet the requirements of the times and have developed very rapidly. Although waterborne coatings are safe and environmentally friendly because their main solvent is water, they also bring some disadvantages. For example, hydrophilic additives that reduce the surface tension are introduced to better wet the substrate, but at the same time, the water resistance of the coating is reduced. And the evaporation rate of water is slow, making it difficult to form a film for the coating, and the scope of use is also restricted. Therefore, it is particularly necessary to prepare a quick-drying industrial waterborne coating resistant to salt spray. Summary of the Invention

[0004] The object of the present invention is to provide a quick-drying salt spray-resistant industrial waterborne coating and a preparation method thereof to solve the problems existing in the prior art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A preparation method of a quick-drying salt spray-resistant industrial waterborne coating, comprising the following steps:

[0006] (1) Mix lithium chloride and N,N-dimethylacetamide, heat up to 50 - 80°C, stir at 60 rpm for 20 min, add nanocellulose, heat up to 100 - 140°C, stir at 500 - 1300 rpm for 3 - 6 h, cool to room temperature, add tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water and mix, stir at 100 rpm for 1 - 3 h, and then perform electrospinning to obtain precursor fibers;

[0007] (2) Treat the precursor fibers at 60 - 100°C for 2 d, at 120°C for 5 h, then perform calcination treatment, and then mix with 1-vinyl-3-hexylimidazolium bromide and deionized water, ultrasonicate at 21 kHz for 20 - 50 min, perform ball milling treatment and drying to obtain a corrosion inhibitor;

[0008] (3) Mix waterborne acrylic modified alkyd resin W-02, drying agent FR350, triethylamine, dispersant EFKA4585, and deionized water, stir at 200 rpm for 30 min, add the corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166, continue stirring for 30 min, and then perform grinding to obtain a quick-drying salt spray-resistant industrial waterborne coating.

[0009] Further, the environmental conditions of the electrospinning in step (1): temperature is 20 - 28°C, humidity is 30 - 40%.

[0010] Further, the process parameters of the electrospinning in step (1): voltage is 10 - 18 kV, receiving distance is 15 - 22 cm, inner diameter of the needle head is 0.3 - 0.6 mm, and injection speed is 0.5 - 1 mL / h.

[0011] Further, the mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water in step (1) is 1:10:0.2:0.1 - 0.5:0.1 - 0.5:0.6:10.

[0012] Further, the calcination temperature in step (2) is 500 - 800°C, and the time is 2 - 5 h.

[0013] Further, the technological parameters of the ball milling in step (2) are as follows: the ball milling medium is agate balls, the ball-to-material ratio is 4-10:1, the rotation speed is 2000-4000 rpm, and the time is 20-40 h.

[0014] Further, the drying temperature in step (2) is 60-100 °C and the time is 8 h.

[0015] Further, the mass ratio of the precursor fiber, 1-vinyl-3-hexylimidazolium bromide, and deionized water in step (2) is 10:1-2:100.

[0016] Further, the rotation speed of the grinding in step (3) is 2000-5000 rpm and the time is 30-60 min.

[0017] Further, the mass ratio of the waterborne acrylic modified alkyd resin W-02, drier FR350, triethylamine, dispersant EFKA4585, deionized water, corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166 in step (3) is 100-300:4:6:5:300:10-30:1-5:1:1:3-8.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The cerium zirconium oxide precursor is used to obtain nanofiber fillers by electrospinning, and cellulose is added therein to play a complexing role. At the same time, carbon substances are obtained after calcination treatment, thereby enhancing the mechanical properties of the fillers. Moreover, a "interpenetrating network structure" with cerium oxide-zirconium oxide particles as nodes is formed in the hybrid material, which is conducive to the loading, transfer, and consumption of energy, thereby enhancing the mechanical properties of the coating. Then, as a nano-container, it effectively loads the corrosion inhibitor. With the assistance of mechanical force, the ionic liquid containing imidazole cations is adsorbed on the conjugated π-π structure of the carbon substance, thereby effectively modifying the nano-fillers. The long chain of the ionic liquid enhances the dispersibility of the nano-fillers, thereby improving the mechanical properties and corrosion resistance of the fillers. And a coordination effect is formed between imidazole and iron, which can be adsorbed on the metal surface. The long alkyl chains in its structure are stacked in large quantities within the adsorption layer, forming a hydrophobic environment to isolate the corrosive medium. The nano-fiber fillers improve the mechanical properties and barrier properties of the coating matrix by filling defects or the "labyrinth effect" to extend the penetration path of the corrosive medium. And the cerium oxide therein can be used as a cathodic inhibitor to adsorb on the metal surface to form cerium hydroxide or cerium oxide protective film, inhibiting the metal corrosion process. And in the later stage of the anti-corrosion operation, a dense and stable surface rust layer structure is formed with iron hydroxide, effectively slowing down the corrosion rate. Zirconium oxide can be used as an inert oxide, greatly eliminating the local micro-current corrosion between the carbon substance and the metal, so that the potential difference between the filler and the metal will not cause galvanic corrosion of the metal material, thereby further enhancing the corrosion resistance of the coating. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In order to more clearly illustrate the method provided by the present invention, the following examples are used to describe in detail the various index testing methods of the quick-drying salt spray resistant industrial water-based coatings prepared in the following examples are as follows:

[0021] The quick-drying salt spray resistant industrial water-based coating was mixed with deionized water until the solution viscosity was 30s, and coated on the tinplate sheet according to GB / T1727, and dried and cured at room temperature for 14 days. The dry film thickness was 20μm to obtain a coating.

[0022] Salt spray resistance: The embodiment and comparative example of the same size were taken to test the neutral salt spray resistance of the coating according to GB / T1771.

[0023] Mechanical properties: The pencil hardness of the coating was tested according to JIS K5400 on the same size examples and comparative examples.

[0024] Example 1

[0025] (1) lithium chloride and N,N-dimethylacetamide were mixed, heated to 50°C, stirred at 60rpm for 20min, nanocellulose was added, heated to 100°C, stirred at 500rpm for 3h, cooled to room temperature, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water were added, and stirred at 100rpm for 1h, and then electrospinning was performed at a temperature of 20°C and a humidity of 30%. The process parameters were as follows: voltage of 10kV, receiving distance of 15cm, needle inner diameter of 0.3mm, and injection speed of 0.5mL / h to obtain precursor fibers; the mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water was 1:10:0.2:0.1:0.1:0.6:10;

[0026] (2) The precursor fiber was treated at 60°C for 2 days and 120°C for 5 hours, and then calcined at a temperature of

[0027] 500℃, time for 2h, then mixed with 1-vinyl-3-hexyl imidazolium bromide and deionized water, 21kHz ultrasonic

[0028] For 20 min, after ball milling treatment, the process parameters are as follows: the ball milling medium is agate balls, the ball-to-material ratio is 4:1, the rotation speed is 2000 rpm, the time is 20 h, and drying is carried out at 60 °C for 8 h to obtain the corrosion inhibitor; the mass ratio of the precursor fiber, 1-vinyl-3-hexylimidazolium bromide, and deionized water is 10:1:100;

[0029] (3) Mix the waterborne acrylic modified alkyd resin W-02, drier FR350, triethylamine, dispersant EFKA4585, and deionized water, stir at 200 rpm for 30 min, add the corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166, continue stirring for 30 min, and then carry out grinding at a rotation speed of 2000 rpm for 30 min to obtain a quick-drying salt spray-resistant industrial waterborne coating; the mass ratio of the waterborne acrylic modified alkyd resin W-02, drier FR350, triethylamine, dispersant EFKA4585, deionized water, corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166 is 100:4:6:5:300:10:1:1:1:3.

[0030] Example 2

[0031] (1) Mix lithium chloride and N,N-dimethylacetamide, heat up to 65 °C, stir at 60 rpm for 20 min, add nanocellulose, heat up to 120 °C, stir at 900 rpm for 4 h, cool to room temperature, add tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water and mix, stir at 100 rpm for 2 h, and then carry out electrospinning in an environment with a temperature of 25 °C and a humidity of 35%, and the process parameters are as follows: the voltage is 14 kV, the receiving distance is 19 cm, the inner diameter of the needle is 0.45 mm, and the injection speed is 0.8 mL / h to obtain the precursor fiber; the mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water is 1:10:0.2:0.3:0.3:0.6:10;

[0032] (2) Treat the precursor fiber at 80 °C for 2 d, treat it at 120 °C for 5 h, then carry out calcination treatment at a temperature of 650 °C for 3.5 h, and then mix it with 1-vinyl-3-hexylimidazolium bromide and deionized water, carry out ultrasonic treatment at 21 kHz for 35 min, and carry out ball milling treatment. The process parameters are as follows: the ball milling medium is agate balls, the ball-to-material ratio is 7:1, the rotation speed is 3000 rpm, the time is 30 h, and drying is carried out at 80 °C for 8 h to obtain the corrosion inhibitor; the mass ratio of the precursor fiber, 1-vinyl-3-hexylimidazolium bromide, and deionized water is 10:1.5:100;

[0033] (3) Mix the waterborne acrylic modified alkyd resin W-02, drier FR350, triethylamine, dispersant EFKA4585, and deionized water, stir at 200 rpm for 30 min, add the corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166, continue stirring for 30 min, and then grind at a speed of 3000 rpm for 45 min to obtain a quick-drying salt spray-resistant industrial waterborne coating; the mass ratio of the waterborne acrylic modified alkyd resin W-02, drier FR350, triethylamine, dispersant EFKA4585, deionized water, corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166 is 200:4:6:5:300:20:3:1:1:5.

[0034] Example 3

[0035] (1) Mix lithium chloride and N,N-dimethylacetamide, heat up to 80 °C, stir at 60 rpm for 20 min, add nanocellulose, heat up to 140 °C, stir at 1300 rpm for 6 h, cool to room temperature, add tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water and mix, stir at 100 rpm for 3 h, and then carry out electrospinning in an environment with a temperature of 28 °C and a humidity of 40%, with the process parameters: voltage of 18 kV, receiving distance of 22 cm, needle inner diameter of 0.6 mm, and injection speed of 1 mL / h to obtain precursor fibers; the mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water is 1:10:0.2:0.5:0.5:0.6:10;

[0036] (2) Treat the precursor fibers at 100 °C for 2 d, 120 °C for 5 h, then carry out calcination treatment at a temperature of 800 °C for 5 h, and then mix with 1-vinyl-3-hexylimidazolium bromide and deionized water, ultrasonicate at 21 kHz for 50 min, and carry out ball milling treatment with the process parameters: the ball milling medium is agate balls, the ball-to-material ratio is 10:1, the rotation speed is 4000 rpm, the time is 40 h, and dry at 100 °C for 8 h to obtain a corrosion inhibitor; the mass ratio of the precursor fibers, 1-vinyl-3-hexylimidazolium bromide, and deionized water is 10:2:100;

[0037] (3) Mix the waterborne acrylic modified alkyd resin W-02, dryer FR350, triethylamine, dispersant EFKA4585, and deionized water, stir at 200 rpm for 30 min, add the corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166, continue stirring for 30 min, and then grind at a speed of 5000 rpm for 60 min to obtain a fast-drying salt spray-resistant industrial waterborne coating; the mass ratio of the waterborne acrylic modified alkyd resin W-02, dryer FR350, triethylamine, dispersant EFKA4585, deionized water, corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15, and thickener PS-166 is 300:4:6:5:300:30:5:1:1:8.

[0038] Comparative Example 1

[0039] The difference between Comparative Example 1 and Example 2 lies in step (1). Modify step (1) as follows: Mix N,N-dimethylacetamide, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water, stir at 100 rpm for 2 h, and then perform electrospinning in an environment with a temperature of 25 °C and a humidity of 35%. The process parameters are: voltage of 14 kV, receiving distance of 19 cm, needle inner diameter of 0.45 mm, and injection speed of 0.8 mL / h to obtain precursor fibers; the mass ratio of N,N-dimethylacetamide, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water is 10:0.3:0.3:0.6:10; the remaining steps are the same as in Example 2.

[0040] Comparative Example 2

[0041] The difference between Comparative Example 2 and Example 2 lies in step (1). Modify step (1) as follows: Mix lithium chloride and N,N-dimethylacetamide, heat to 65 °C, stir at 60 rpm for 20 min, add nanocellulose, heat to 120 °C, stir at 900 rpm for 4 h, cool to room temperature, add tetrabutyl zirconate, acetic acid, and deionized water, stir at 100 rpm for 2 h, and then perform electrospinning in an environment with a temperature of 25 °C and a humidity of 35%. The process parameters are: voltage of 14 kV, receiving distance of 19 cm, needle inner diameter of 0.45 mm, and injection speed of 0.8 mL / h to obtain precursor fibers; the mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, tetrabutyl zirconate, acetic acid, and deionized water is 1:10:0.2:0.3:0.6:10; the remaining steps are the same as in Example 2.

[0042] Comparative Example 3

[0043] The difference between Comparative Example 3 and Example 2 lies in step (1). Step (1) is changed to: Mix lithium chloride and N,N-dimethylacetamide, heat up to 65°C, stir at 60 rpm for 20 min, add nanocellulose, heat up to 120°C, stir at 900 rpm for 4 h, cool to room temperature, add cerium nitrate, acetic acid, and deionized water and mix, stir at 100 rpm for 2 h, and then perform electrospinning at an environment temperature of 25°C and humidity of 35%. The process parameters are: voltage of 14 kV, receiving distance of 19 cm, needle inner diameter of 0.45 mm, and injection speed of 0.8 mL / h to obtain precursor fibers; the mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, cerium nitrate, acetic acid, and deionized water is 1:10:0.2:0.3:0.6:10; the remaining steps are the same as those in Example 2.

[0044] Comparative Example 4

[0045] The difference between Comparative Example 4 and Example 2 lies in step (1). Step (1) is changed to: Treat the precursor fibers at 80°C for 2 d and at 120°C for 5 h, and then perform calcination treatment at a temperature of 650°C for 3.5 h to obtain the corrosion inhibitor; the remaining steps are the same as those in Example 2.

[0046] Effect Example

[0047] The following Table 1 gives the performance analysis results of the quick-drying salt spray-resistant industrial waterborne coatings using Examples 1 to 3 and Comparative Examples 1 to 4 of the present invention.

[0048] Table 1

[0049] Neutral salt spray resistance (h) Pencil hardness Example 1 860 4H Example 2 900 5H Example 3 870 4H Comparative Example 1 750 3H Comparative Example 2 740 3H Comparative Example 3 770 2H Comparative Example 4 700 3H

[0050] From the comparison of the experimental data of the examples and the comparative examples in Table 1, it can be found that the present invention uses a cerium zirconium oxide precursor to obtain nanofiber fillers through electrospinning, and cellulose is added therein to play a complexing role. At the same time, carbon substances are obtained after calcination treatment, thereby enhancing the mechanical properties of the fillers. Moreover, a "interpenetrating network structure" with cerium oxide-zirconium oxide particles as nodes is formed in the hybrid material, which is beneficial to energy consumption, thereby enhancing the mechanical properties of the coating. Then, as a nano-container, it effectively loads the corrosion inhibitor. With the assistance of mechanical force, the ionic liquid containing imidazole cations effectively modifies the nano-fillers. The long chain of the ionic liquid enhances the dispersibility of the nano-fillers, thereby improving the mechanical properties and corrosion resistance of the fillers. And a coordination interaction is formed between imidazole and iron, which can then adsorb on the metal surface to form a hydrophobic environment and isolate the corrosion medium. The nano-fiber fillers improve the mechanical properties and barrier properties of the coating matrix through filling defects or the "labyrinth effect". And the cerium oxide therein can act as a cathodic inhibitor to adsorb on the metal surface to form a cerium hydroxide or cerium oxide protective film, inhibiting the metal corrosion process. And in the later stage of the anti-corrosion operation, a dense and stable surface rust layer structure is formed with iron oxyhydroxide, effectively slowing down the corrosion rate. Zirconium oxide can act as an inert oxide, so that the potential difference between the filler and the metal will not cause galvanic corrosion of the metal material, thereby further enhancing the corrosion resistance of the coating.

[0051] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed claim.

Claims

1. A method for preparing a quick-drying salt-spray resistant industrial water-based coating, characterized in that: The following steps are involved: (1) Lithium chloride and N,N-dimethylacetamide were mixed, heated to 50-80°C, stirred at 60 rpm for 20 min, nanocellulose was added, heated to 100-140°C, stirred at 500-1300 rpm for 3-6 h, cooled to room temperature, tetrabutyl zirconate, cerium nitrate, acetic acid, and deionized water were added, stirred at 100 rpm for 1-3 h, and then electrospun to obtain precursor fibers; (2) The precursor fiber is treated at 60-100°C for 2 days and 120°C for 5 hours, and then calcined, and then mixed with 1-vinyl-3-hexyl imidazole bromide and deionized water, subjected to 21kHz ultrasound for 20-50 minutes, ball-milled, and dried to obtain a corrosion inhibitor; (3) Mix water-based acrylic modified alkyd resin W-02, drying agent FR350, triethylamine, dispersant EFKA4585 and deionized water, stir at 200 rpm for 30 min, add corrosion inhibitor, carbon black 3200F, defoamer BYK-011, anti-settling agent H15 and thickener PS-166, continue stirring for 30 min, and then grind to obtain a quick-drying salt spray resistant industrial water-based coating.

2. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The environmental conditions for the electrospinning in step (1) are: temperature of 20-28° C. and humidity of 30-40%.

3. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The process parameters of the electrospinning in step (1) are as follows: voltage of 10-18 kV, receiving distance of 15-22 cm, needle inner diameter of 0.3-0.6 mm, and injection speed of 0.5-1 mL / h.

4. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The mass ratio of lithium chloride, N,N-dimethylacetamide, nanocellulose, tetrabutyl zirconate, cerium nitrate, acetic acid and deionized water in step (1) is 1:10:0.2:0.1~0.5:0.1~0.5:0.6:

10.

5. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The calcination temperature in step (2) is 500-800°C and the calcination time is 2-5 hours.

6. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The process parameters of the ball milling in step (2) are as follows: the ball milling medium is agate balls, the ball-to-material ratio is 4-10:1, the rotation speed is 2000-4000 rpm, and the time is 20-40 hours.

7. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The drying temperature in step (2) is 60-100°C and the drying time is 8 hours.

8. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: In step (2), the mass ratio of the precursor fiber, 1-vinyl-3-hexyl imidazolium bromide and deionized water is 10:1 to 2:

100.

9. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: The grinding speed in step (3) is 2000-5000 rpm and the grinding time is 30-60 min.

10. The method for preparing a quick-drying salt-spray resistant industrial water-based coating according to claim 1, characterized in that: In step (3), the mass ratio of the waterborne acrylic modified alkyd resin W-02, the drying agent FR350, triethylamine, the dispersant EFKA4585, the deionized water, the corrosion inhibitor, the carbon black 3200F, the defoaming agent BYK-011, the anti-settling agent H15, and the thickener PS-166 is 100-300:4:6:5:300:10-30:1-5:1:1:3-8.