Water-based high-solid epoxy micaceous iron oxide intermediate paint for heavy-duty anticorrosion, and preparation method and application thereof

Abstract

The application discloses a water-based high-solid-content epoxy micawHITE intermediate paint for heavy-duty corrosion protection and a preparation method and application thereof, and comprises components A and B; the component A comprises water-based epoxy dispersion, a toughening agent, titanium barium powder, micawHITE and polyamide wax paste; the solid content of the water-based epoxy dispersion is not less than 70%, and the epoxy equivalent of the water-based epoxy dispersion is 270-330; the component B comprises water-based epoxy amine curing agent, micawHITE and polyamide wax paste; the HLB value of the water-based epoxy amine curing agent is 10-18, and the solid content is greater than 50%. When the curing agent is added during construction, only a small amount of water is needed to dilute, so that the construction viscosity and requirements of airless spraying can be achieved. The water-based high-solid-content epoxy micawHITE intermediate paint for heavy-duty corrosion protection prepared by the application has high film thickness for one-time construction, can reach a dry film of more than 180 microns, and can meet the construction requirements of heavy-duty corrosion protection paint, and the paint film is not cracked, has no thick edges, and does not sag.

Description

Technical Field

[0001] This invention belongs to the field of coating technology, specifically relating to a heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint, its preparation method, and its application. Background Technology

[0002] The trend towards water-based anti-corrosion coatings is inevitable. Currently, the progress of water-based anti-corrosion coatings is accelerating significantly in light corrosion environments or C4 corrosion environments, while the progress is slower in C5 corrosion environments. Existing solutions use low-molecular-weight and medium-low-molecular-weight water-based epoxy emulsions as film-forming materials, combined with Huntsman 38-1 curing agent, to prepare thick-film water-based epoxy micaceous iron oxide intermediate paints. The non-volatile content reaches 80%, and the single-layer salt spray resistance is very high. However, a problem exists where a large amount of water needs to be added to dilute the two components to achieve the required application viscosity. This reduces the solids content during application, resulting in a single-application film thickness of only 120 micrometers, which cannot meet the requirements for heavy-duty anti-corrosion applications. Another solution uses liquid epoxy resin combined with an active diluent as the film-forming material, employing a water-based... Epoxy curing agents, acting as both curing agents and emulsifiers, undergo emulsification during use, causing significant changes in the coating's viscosity—a sudden and noticeable increase followed by a decrease. This hinders application and necessitates the addition of large amounts of water for dilution. Furthermore, uneven mixing on-site can easily lead to incomplete emulsification and reduced workability, severely impacting the coating's performance stability. In other solutions, liquid epoxy is combined with reactive diluents, various fillers, and masking pigments, using Huntsman 38-1 as both a curing agent and emulsifier. During the mixing of these two components, an inversion process occurs, significantly increasing the system viscosity. This requires substantial amounts of water or solvent for dilution, or significant mechanical stirring, to achieve good workability, further reducing application convenience. Therefore, existing water-based high-solids epoxy products have the following problems: 1. The products have high solids content and high viscosity, requiring the addition of a large amount of water for dilution during construction, generally 15%-30%, resulting in low solids content during actual construction. In airless spraying, the film thickness decreases significantly in a single application. 2. Because a large amount of powder is concentrated in component A, along with the thixotropic agent, component A has a high viscosity and strong thixotropy, making it easy to cause uneven mixing during actual use.

[0003] In summary, developing a high-solids epoxy micaceous iron oxide intermediate paint with excellent construction performance for heavy-duty corrosion protection is an urgent task. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a water-based high-solids epoxy micaceous iron oxide intermediate paint for heavy-duty anti-corrosion coatings, which has excellent construction performance and can meet the construction requirements of heavy-duty anti-corrosion coatings.

[0005] The present invention also proposes a method for preparing the above-mentioned waterborne high-solids epoxy micaceous iron oxide intermediate paint.

[0006] The present invention also proposes the application of the above-mentioned waterborne high-solids epoxy micaceous iron oxide intermediate paint in topcoat.

[0007] According to one aspect of the present invention, a heavy-duty anti-corrosion waterborne high-solids epoxy micaceous iron oxide intermediate paint is provided, comprising component A and component B; wherein component A comprises: waterborne epoxy dispersion, toughening agent, titanium barium powder, micaceous iron oxide and polyamide wax paste; wherein the solid content of the waterborne epoxy dispersion is not less than 70%, and the epoxy equivalent of the solid in the waterborne epoxy dispersion is 270-330;

[0008] Component B includes: water-based epoxy amine curing agent, mica iron oxide and polyamide wax paste;

[0009] The curing agent has an HLB value of 10-18 and a solid content of more than 50%.

[0010] The water-based high-solids epoxy micaceous iron oxide intermediate paint of the present invention has at least the following beneficial effects:

[0011] 1. In existing technologies, the addition of water-based epoxy curing agents increases the viscosity of the system, requiring the addition of a large amount of water to reduce viscosity before application. This invention, through the selection of raw materials, utilizes the aforementioned water-based epoxy amine curing agent to reduce viscosity while maintaining a high solids content after reaction within the system. During subsequent application, only a small amount of water is needed to meet the viscosity and requirements for airless spraying. A single application produces a high film thickness, reaching over 200 micrometers of dry film, without cracking, thick edges, or sagging, meeting the requirements for heavy-duty anti-corrosion coatings. The resulting coating exhibits excellent compatibility, with a salt spray resistance of 2000 hours and a condensation test of 720 hours, meeting the long-term anti-corrosion performance requirements under C5 corrosion conditions.

[0012] 2. Both components A and B of this invention contain micaceous iron oxide. Relatively speaking, the viscosity of both components of this product is not high, and the product has good fluidity, making it easy to pour and stir.

[0013] 3. Curing agents within the HLB 10-18 range can simultaneously function as both curing agents and emulsifiers, enhancing the compatibility of polar and non-polar components in the coating system, reducing coating viscosity, and improving coating flowability and application performance. Through emulsification, curing agents can promote the interaction between various components in the coating, improving their compatibility and reducing viscosity. This helps improve the rheological properties of the coating, making it easier to apply and process.

[0014] In some embodiments of the present invention, the raw materials for preparing the waterborne epoxy amine curing agent include ethylene tetraamine, epoxy resin, nonionic polyether polyol diglycidyl ether and monoepoxy glycidyl ether.

[0015] In some embodiments of the present invention, by weight, component A comprises: 20-30 parts of aqueous epoxy dispersion, 2-4 parts of toughening agent, 45-55 parts of titanium barium powder, 2-8 parts of mica iron oxide and 0.2-0.4 parts of polyamide wax paste; component B comprises: 13-18 parts of aqueous epoxy amine curing agent, 2-8 parts of mica iron oxide and 0.2-0.4 parts of polyamide wax paste.

[0016] In some embodiments of the present invention, the water-based amine curing agent has a solid content of not less than 52%.

[0017] In some embodiments of the present invention, the active hydrogen equivalent of the aqueous amine curing agent is 250 to 320.

[0018] In some embodiments of the present invention, the solid content of the aqueous epoxy dispersion is not less than 70%, the epoxy equivalent of the aqueous epoxy dispersion is 280-320, and the viscosity of the aqueous epoxy dispersion is 50-5000 mPa·s.

[0019] In some embodiments of the present invention, the toughening agent comprises a hyperbranched polyester, the volatile matter content of the toughening agent is not greater than 0.5%, and the viscosity of the toughening agent is 10 to 90 mPa·s.

[0020] The addition of hyperbranched polyester has a synergistic effect in the system, which can toughen and reduce viscosity, reduce the viscosity of the paint, and improve the flexibility of the paint film.

[0021] In some embodiments of the present invention, the toughening agent is used in an amount of 10%-15% of the amount of the aqueous epoxy dispersion, by weight percentage.

[0022] In some embodiments of the present invention, the titanium barium powder comprises barium sulfate powder modified with titanate ester surface; the oil absorption of the titanium barium powder is not greater than 10g / 100g.

[0023] In some embodiments of the present invention, the particle size of the mica iron oxide is 600-900 mesh.

[0024] In some embodiments of the present invention, the mass percentage of the flaky structure of the mica iron oxide is not less than 60%.

[0025] In some embodiments of the present invention, the oil absorption of the mica iron oxide is no more than 14g / 100g.

[0026] In some embodiments of the present invention, component A includes a cosolvent, which comprises dodecyl alcohol ester and dipropylene glycol methyl ether; the mass ratio of dodecyl alcohol ester and dipropylene glycol methyl ether is approximately 1:1.

[0027] In some embodiments of the present invention, by weight, component A comprises: 20-30 parts of waterborne epoxy dispersion, 0.5-1.0 parts of dispersant, 0.1-0.3 parts of defoamer, 0.1-0.3 parts of anti-flash rust agent, and 1.5-3 parts of cosolvent; component B comprises: 13-18 parts of waterborne epoxy amine curing agent, 0-0.3 parts of dispersant, and 0.15-0.3 parts of defoamer.

[0028] In some embodiments of the present invention, by weight, component A comprises: 20-30 parts of aqueous epoxy dispersion, 2-4 parts of toughening agent, 0.5-1.0 parts of dispersant, 0.1-0.3 parts of defoamer, 45-55 parts of titanium barium powder, 2-8 parts of mica iron oxide, 0.1-0.3 parts of anti-flash rust agent, 0.2-0.4 parts of polyamide wax paste, and 1.5-3 parts of co-solvent; component B comprises: 13-18 parts of aqueous epoxy amine curing agent, 0-0.3 parts of dispersant, 0.15-0.3 parts of defoamer, 2-8 parts of mica iron oxide, and 0.2-0.4 parts of polyamide wax paste; the total weight of component A and component B is 100.

[0029] In some embodiments of the present invention, the dispersant includes a polymeric nonionic dispersant and a wetting agent.

[0030] The dispersant of the present invention works synergistically in the components to reduce the viscosity of the system without affecting the physical and chemical properties of the coating.

[0031] A second aspect of the present invention provides a method for preparing the aforementioned heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint, comprising the following steps:

[0032] S1: The aqueous epoxy dispersion, the toughening agent, the titanium barium powder, and the mica iron oxide are mixed and then the polyamide wax slurry is added to adjust the viscosity to obtain component A;

[0033] S2: The aqueous epoxy amine curing agent, mica iron oxide and polyamide wax paste are mixed and dispersed to obtain component B.

[0034] In some embodiments of the present invention, the preparation method of the heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint includes the following steps:

[0035] S1: Weigh each component according to the raw material mass ratio, add water-based epoxy dispersion, dispersant, wetting agent, defoamer, anti-flash rust agent, polyamide wax slurry, and co-solvent into the reactor, stir and disperse, then add titanium barium powder and mica iron oxide powder, disperse to a fineness of 60 microns, then add polyamide wax slurry to adjust the viscosity, and discharge to obtain component A.

[0036] S2: Weigh each component according to the raw material mass ratio, add water-based epoxy amine, multifunctional modifier, dispersant, defoamer, and polyamide wax slurry to the kettle, stir and disperse, then add titanium barium powder and mica iron oxide powder, disperse to a fineness of 60 microns, then add polyamide wax slurry to adjust the viscosity, and discharge to obtain component B.

[0037] In some embodiments of the present invention, in step S1, the stirring and dispersing speed is 1200-1300 r / min.

[0038] In some embodiments of the present invention, in step S1, the stirring time is 20 to 30 minutes.

[0039] In some embodiments of the present invention, in step S2, the stirring and dispersing speed is 1000-1100 r / min.

[0040] In some embodiments of the present invention, in step S2, the stirring time is 20 to 30 minutes.

[0041] A third aspect of the present invention provides an anti-corrosion coating comprising a coating formed by the aforementioned water-based high-solids epoxy micaceous iron oxide intermediate paint.

[0042] In some embodiments of the present invention, the coating includes application on the surfaces of port machinery, bridges, wind power, and power facilities.

[0043] In some embodiments of the present invention, the anti-corrosion coating is applied by fully mixing component A and component B in a certain proportion; the weight ratio of component A to component B is 3.5 to 4.5:1.

[0044] In some embodiments of the present invention, the mixing of component A and component B further includes dilution with water, wherein the dilution ratio is not greater than 5%. Detailed Implementation

[0045] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. In this invention, the titanium barium powder is selected from G-3800 of Baichen Chemical Technology (Shenyang) Co., Ltd.;

[0046] The water-based amine curing agent was selected from HDH2622-WB of Shanghai Handai Chemical Co., Ltd.

[0047] Mica iron oxide is selected from GT1050-500 of Anhui Yinuo Pigment Technology Co., Ltd.

[0048] Hyperbranched polyethers were selected from: Wuhan Senmao CYH-277;

[0049] The defoamer was selected from DIG Chemical 901W;

[0050] The anti-flash rust agent was selected from ASCOTRAN H10;

[0051] The polyamide wax paste was selected from DISPARON AQ633E.

[0052] Example 1

[0053] This embodiment describes the preparation of a heavy-duty anti-corrosion waterborne high-solids epoxy micaceous iron oxide intermediate paint, its preparation method, and performance testing. Specifically, component A consists of 22.2 parts waterborne epoxy dispersion, 3.3 parts multifunctional modifier, 0.7 parts dispersant, 0.2 parts defoamer, 45 parts titanium barium powder, 5 parts micaceous iron oxide, 0.2 parts anti-flash rust agent, 0.3 parts polyamide wax paste, and 2 parts co-solvent; component B consists of 15.9 parts waterborne epoxy curing agent, 0.3 parts dispersant, 0.3 parts defoamer, 4.5 parts micaceous iron oxide, and 0.3 parts polyamide wax paste.

[0054] The mass ratio of the mixture of dodecyl alcohol ester and dipropylene glycol methyl ether in the cosolvent is 1:1.

[0055] The preparation steps are as follows:

[0056] Preparation of component A:

[0057] Weigh each component according to the raw material mass ratio, add the water-based epoxy dispersion, dispersant, wetting agent, defoamer, anti-flash rust agent, polyamide wax slurry, and co-solvent into the reactor, stir at 1200 r / min for 20 min, then add titanium barium powder and mica iron oxide powder, disperse at high speed to a fineness of 60 microns, then add polyamide wax slurry to adjust the viscosity, and discharge to obtain component A.

[0058] Preparation of component B:

[0059] Weigh each component according to the raw material mass ratio, add water-based epoxy amine, multifunctional modifier, dispersant, defoamer, and polyamide wax slurry into the reactor, stir at 1000 r / min for 20 min, then add titanium barium powder and mica iron oxide powder, disperse at high speed to a fineness of 60 microns, then add polyamide wax slurry to adjust the viscosity, and discharge to obtain component B.

[0060] Test method:

[0061] During construction, the dry film thickness in one pass is determined by using a high-pressure airless spray gun and a cross-spraying method, spraying once in the horizontal direction and once in the vertical direction. The film thickness is then tested after the film has completely dried.

[0062] Diluting ratio: The amount of tap water added to dilute the paint to achieve the required viscosity for high-pressure airless spraying (95-100 seconds). (Approximately 3% water needs to be added to achieve this viscosity.)

[0063] Workability: Observe the atomization effect and paint film effect at the application and spraying viscosity.

[0064] Performance tests are shown in Table 1:

[0065] Table 1. Performance Tests of Waterborne High-Solids Epoxy Micaceous Iron Oxide Intermediate Coating for Heavy-Duty Corrosion Protection in Example 1

[0066]

[0067] Example 2

[0068] This embodiment describes the preparation of a heavy-duty anti-corrosion waterborne high-solids epoxy micaceous iron oxide intermediate paint, its preparation method, and performance testing. Specifically, component A consists of 23.1 parts waterborne epoxy dispersion, 2.8 parts multifunctional modifier, 0.6 parts dispersant, 0.15 parts defoamer, 48 parts titanium barium powder, 2 parts micaceous iron oxide, 0.3 parts anti-flash rust agent, 0.3 parts polyamide wax paste, and 2.5 parts co-solvent; component B consists of 16.4 parts waterborne epoxy curing agent, 0.2 parts dispersant, 0.15 parts defoamer, 4 parts micaceous iron oxide, and 0.2 parts polyamide wax paste.

[0069] The preparation method and testing method in this embodiment are the same as in Example 1. The test results are shown in Table 2.

[0070] Table 2. Performance Tests of Waterborne High-Solids Epoxy Micaceous Iron Oxide Intermediate Coating for Heavy-Duty Corrosion Protection in Example 2

[0071]

[0072]

[0073] Example 3

[0074] This embodiment describes the preparation of a heavy-duty anti-corrosion waterborne high-solids epoxy micaceous iron oxide intermediate paint, its preparation method, and performance testing. Specifically, component A consists of 25.2 parts waterborne epoxy dispersion, 2.2 parts multifunctional modifier, 0.6 parts dispersant, 0.1 parts defoamer, 49 parts titanium barium powder, 2 parts mica iron oxide, 0.1 parts anti-flash rust agent, 0.2 parts polyamide wax paste, and 3 parts co-solvent; component B consists of 16 parts waterborne epoxy curing agent, 0.15 parts defoamer, 2 parts mica iron oxide, and 0.2 parts polyamide wax paste.

[0075] The preparation method and testing method in this embodiment are the same as in Example 1. The test results are shown in Table 3.

[0076] Table 3. Performance Tests of Waterborne High-Solids Epoxy Micaceous Iron Oxide Intermediate Coating for Heavy-Duty Corrosion Protection in Example 3

[0077]

[0078]

[0079] Comparative Example 1

[0080] This comparative example prepared a heavy-duty anti-corrosion waterborne high-solids epoxy micaceous iron oxide intermediate paint, along with its preparation method and performance testing. The difference between Comparative Example 1 and Example 1 is that the curing agent for component B is 7.9 parts of a waterborne epoxy-modified amine curing agent, specifically Huntsman's ARADUR 38-1 curing agent. All other conditions are the same. The performance tests are shown in Table 4 (to ensure consistent resin and curing agent ratios, the weight parts of each component are as shown in Comparative Example 1):

[0081] Table 4. Performance Tests of Waterborne High-Solids Epoxy Micaceous Iron Oxide Intermediate Coating for Heavy-Duty Corrosion Protection (Comparative Example 1)

[0082]

[0083] Comparative Example 2

[0084] This comparative example prepared a water-based high-solids epoxy micaceous iron oxide intermediate paint for heavy-duty corrosion protection, along with its preparation method and performance testing. The difference between Comparative Example 1 and Example 1 is that the titanium barium powder in component A was adjusted to ordinary precipitated barium sulfate BSP-1 (produced by Jiangsu Qunxin Powder Technology Co., Ltd., with an average particle size of 1.5 μm and an oil absorption of 15-20 g / 100 g). All other conditions were the same. The performance tests are shown in Table 5.

[0085] Table 5. Performance Tests of Water-Based High-Solids Epoxy Micaceous Iron Oxide Intermediate Coating for Heavy-Duty Corrosion Protection (Comparative Example 2)

[0086]

[0087] Comparative Example 3

[0088] This comparative example prepared a heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint, its preparation method, and performance testing. The difference between Comparative Example 1 and Example 1 is that this example prepared a heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint, its preparation method, and performance testing, specifically: Component A: 23.1 parts of water-based epoxy dispersion, 2.8 parts of multifunctional modifier, 0.8 parts of dispersant, 0.3 parts of defoamer, 48 parts of titanium barium powder, 6 parts of mica iron oxide, 0.3 parts of anti-flash rust agent, 0.5 parts of polyamide wax paste, and 2.5 parts of co-solvent; Component B: 16.4 parts of water-based epoxy curing agent.

[0089] Performance tests are shown in Table 6:

[0090] Table 6. Performance Tests of Waterborne High-Solids Epoxy Micaceous Iron Oxide Intermediate Coating for Heavy-Duty Corrosion Protection (Comparative Example 3)

[0091]

[0092]

[0093] The water-based high-solids epoxy micaceous iron oxide intermediate paint for heavy-duty anti-corrosion coatings obtained in Examples 1-5 has a high solids content, with a non-volatile matter content of 82% and a volume solids content of 74% during application. Only 3%-5% water needs to be added for dilution during application to achieve the required viscosity and properties for airless spraying. A single application produces a thick film, reaching over 200 micrometers of dry film, without cracking, thick edges, or sagging, thus meeting the requirements for heavy-duty anti-corrosion coating application. In Comparative Example 1, the curing agent for component B is Huntsman's ARADUR 38-1 curing agent. Its addition increases the system viscosity, requiring the addition of a large amount of water to reduce viscosity before application. This results in a significantly lower solids content in the actual coating, leading to a lower film thickness in a single application and failing to meet the requirements for heavy-duty anti-corrosion application. Comparative Example 2 uses common barium sulfate with an oil absorption of 15g / 100g. Due to the large amount added, it increases the thixotropy of the main paint, increases the rotational viscosity, and reduces the fluidity, making it difficult to apply. Comparative Example 3 adds all the mica iron oxide to the main paint, does not add any components to the hardener, and adds polyamide wax, which leads to an increase in the viscosity of the main paint and a decrease in the fluidity.

[0094] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint, characterized in that, It comprises components A and B; by weight, component A includes: 20-30 parts of waterborne epoxy dispersion, 2-4 parts of toughening agent, 45-55 parts of titanium barium powder, 2-8 parts of mica iron oxide, and 0.2-0.4 parts of polyamide wax paste; component B includes: 13-18 parts of waterborne epoxy amine curing agent, 2-8 parts of mica iron oxide, and 0.2-0.4 parts of polyamide wax paste; The waterborne epoxy amine curing agent has an HLB value of 10-18 and a solid content greater than 50%; the waterborne epoxy amine curing agent is HDH2622 from Shanghai Handai Chemical Co., Ltd. WB; The toughening agent includes hyperbranched polyether, the viscosity of which is 10~90 mPa·s at 25°C; The titanium barium powder includes barium sulfate powder with titanium ester surface modification; the oil absorption of the titanium barium powder is not greater than 10 g / 100g.

2. The heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint according to claim 1, characterized in that, Component A further includes a co-solvent, which comprises dodecyl alcohol ester and dipropylene glycol methyl ether; the mass ratio of dodecyl alcohol ester and dipropylene glycol methyl ether is 1:0.5~2.

3. The heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint according to claim 1, characterized in that, By weight, component A comprises: 20-30 parts of waterborne epoxy dispersion, 0.5-1.0 parts of dispersant, 0.1-0.3 parts of defoamer, 0.1-0.3 parts of anti-flash rust agent, and 1.5-3 parts of cosolvent; component B comprises: 13-18 parts of waterborne epoxy amine curing agent, 0-0.3 parts of dispersant, and 0.15-0.3 parts of defoamer.

4. The method for preparing heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint according to any one of claims 1 to 3, characterized in that, Includes the following steps: S1: The aqueous epoxy dispersion, the toughening agent, the titanium barium powder, and the mica iron oxide are mixed and then the polyamide wax slurry is added to adjust the viscosity to obtain component A; S2: The aqueous epoxy amine curing agent, mica iron oxide and polyamide wax paste are mixed and dispersed to obtain component B; The components A and B constitute the heavy-duty anti-corrosion water-based high-solids epoxy micaceous iron oxide intermediate paint.

5. An anti-corrosion coating, characterized in that, The coating formed by the water-based high-solids epoxy micaceous iron oxide intermediate paint as described in any one of claims 1 to 3.

6. The anti-corrosion coating according to claim 5, characterized in that, When using the anti-corrosion coating, the A component and the B component are mixed before application; the weight ratio of the A component and the B component is 3.5~4.5:

1.

7. The anti-corrosion coating according to claim 6, characterized in that, The mixture is further diluted with water, and the dilution ratio is no greater than 5%.

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