Water-based inorganic hybrid corrosion-inhibiting and anticorrosive coating and preparation method thereof

Abstract

The application relates to the technical field of anticorrosive coatings, in particular to a water-based inorganic hybrid corrosion-inhibiting and anticorrosive coating and a preparation method thereof. The water-based inorganic hybrid corrosion-inhibiting and anticorrosive coating is prepared from the following raw materials in mass fractions: 30-40 parts of a water-based inorganic hybrid emulsion, 4-7 parts of zirconium nanotubes, 0.5-1 part of a dispersing agent, 0.1-0.3 part of a defoaming agent, and water in an amount controlled to 45-50% of non-volatile parts; the water-based inorganic hybrid emulsion is prepared from a silicon monomer, zirconium n-butoxide, an acrylate monomer and KH-570. The zirconium nanotubes and the water-based inorganic hybrid emulsion crosslinked with zirconium n-butoxide are used to synergistically enhance the adhesion of the coating and the corrosion resistance, and the comprehensive protection performance is significantly improved. The coating provided by the application uses water as a dispersing medium, the zirconium nanotubes are uniformly dispersed by being mixed and pre-ground with the dispersing agent, agglomeration failure is avoided, and a high-efficiency and reliable solution is provided for metal protection in a corrosive environment.

Description

Technical Field

[0001] This invention relates to the field of anti-corrosion coating technology, specifically to a water-based inorganic hybrid corrosion-inhibiting anti-corrosion coating and its preparation method. Background Technology

[0002] Metal corrosion poses a significant threat to human health, with large quantities of metal becoming unusable due to corrosion every year. Steel corrosion not only causes enormous economic losses globally but also poses a serious threat to human life and the environment. To extend the service life of steel structures and other metals, the use of coatings with excellent corrosion resistance and the ability to delay external corrosion of the paint film is particularly important. Water-based coatings are widely used in steel structures due to their good environmental friendliness, low VOC content, good corrosion resistance, ease of application, and safe transportation.

[0003] Currently, the anti-corrosion coating industry generally relies on traditional rust-inhibiting pigments such as zinc phosphate and aluminum tripolyphosphate. Although these pigments possess passivation capabilities, they exhibit significant drawbacks in water-based systems: their excessive reactivity leads to dispersion, flocculation, and gelation, especially in water-based acrylic emulsion systems where their stability deteriorates drastically after long-term storage. More critically, traditional coatings are prone to blistering and corrosion propagation at scratched areas during salt spray tests, accelerating the spread of rust on the substrate and necessitating frequent renovations of outdoor steel structures, resulting in high overall maintenance costs. Therefore, there is an urgent need in this field for an environmentally friendly, stable, and long-lasting water-based anti-corrosion coating that can effectively inhibit under-film corrosion. Summary of the Invention

[0004] To address the shortcomings of existing methods, this invention provides a water-based inorganic hybrid corrosion-inhibiting coating, which is composed of the following raw materials in parts by weight: 30-40 parts water-based inorganic hybrid emulsion, 4-7 parts zirconium nanotubes, 0.5-1 parts dispersant, 0.1-0.3 parts defoamer, and water content controlled at 45-50% non-volatile components.

[0005] Furthermore, the dispersant is THIXATROL MAX.

[0006] Furthermore, the defoamer is BYK-024.

[0007] Further, the aqueous inorganic hybrid emulsion is prepared from silicon monomers, zirconium n-butoxide, acrylate monomers, and KH-570; the preparation method of the aqueous inorganic hybrid emulsion includes the following steps:

[0008] a) Under nitrogen protection, emulsifier, water and part of silicon monomer are mixed and reacted at 75~81℃ for 20~30 min. Then, the remaining silicon monomer and zirconium n-butoxide are added and the reaction is continued for 3~5 h. The temperature is then lowered and the pH value is adjusted to 7~8 to obtain organosilicon emulsion.

[0009] b) Mix acrylate monomer, emulsifier, KH-570 and water evenly to prepare a pre-emulsion; take a portion of the pre-emulsion and mix it with the silicone emulsion, heat to 84~86℃, add a portion of the initiator, react for 20~30 min, then add the remaining pre-emulsion and initiator, react at 82~89℃ for 2 h; cool down, adjust the pH to 8-9, and filter.

[0010] Further, the emulsifier in step a) is obtained by mixing sodium alkyl polyoxyethylene ether sulfate and alkyl polyoxyethylene ether in a mass ratio of 1:1; the emulsifier is 10-18% of the total mass of silicon monomers.

[0011] Further, the emulsifier in step b) is obtained by mixing sodium alkyl polyoxyethylene ether sulfate and alkyl polyoxyethylene ether in a mass ratio of 1:1; the emulsifier is 3 to 5% of the total mass of silicon monomers.

[0012] Furthermore, the silicon monomer is prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5.

[0013] Furthermore, the mass ratio of zirconium butoxide to silicon monomer is 2.5~4.5:30.

[0014] Furthermore, the acrylate monomer is prepared by mixing butyl acrylate, methyl methacrylate, and methacrylic acid in a mass ratio of 45:22:1.

[0015] Furthermore, the mass ratio of the silicon monomer to the acrylate monomer is 25~35:60~70 (preferably 30:68).

[0016] Furthermore, the initiator is ammonium sulfate (APS); the initiator has a mass of 0.5-0.8 wt% acrylate monomer.

[0017] Furthermore, the mass of KH570 is 3-5% of the acrylate monomer.

[0018] Furthermore, the pH is adjusted using ammonia.

[0019] Furthermore, the method for preparing the zirconium nanotubes includes the following steps:

[0020] 1) Dissolve zirconium oxychloride octahydrate in N,N-dimethylformamide to form a zirconium precursor solution;

[0021] 2) Add 1,3,6,8-tetra(4-carboxyphenyl)pyrene, benzoic acid and deionized water to the zirconium precursor solution in sequence, mix and then sonicate for 15 minutes;

[0022] 3) Place the mixed solution in a sealed reaction vessel and react at 120°C for 24 hours. After the reaction is complete, cool to room temperature and separate the solid product.

[0023] 4) The solid product was washed sequentially with DMF, anhydrous ethanol and deionized water. The washed product was dispersed in water and freeze-dried to obtain zirconium nanotubes.

[0024] Preferably, the mass ratio of zirconium oxychloride octahydrate, 1,3,6,8-tetra(4-carboxyphenyl)pyrene, benzoic acid and 25 parts of deionized water is 53.7:99.7:71.2:25.

[0025] The preparation method of the above-mentioned waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating includes the following steps: pre-grinding zirconium nanotubes with dispersant and some water for 10-20 minutes, and then mixing them evenly with waterborne inorganic hybrid emulsion and defoamer to obtain waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0026] The beneficial effects of this invention are:

[0027] The waterborne inorganic hybrid corrosion-inhibiting coating of this invention significantly improves overall protective performance by introducing zirconium nanotubes and optimizing the emulsion system. The addition of zirconium nanotubes forms a highly efficient physical barrier and exerts a chemical passivation effect, enabling salt spray resistance to reach 710-850 hours. Simultaneously, the zirconium nanotubes and the waterborne inorganic hybrid emulsion containing zirconium butyrate crosslinking synergistically enhance coating adhesion and strengthen corrosion resistance. The waterborne inorganic hybrid corrosion-inhibiting coating of this invention, with water as the dispersion medium, meets environmental protection requirements. Furthermore, the pre-grinding process of mixing and dispersing zirconium nanotubes and dispersants ensures uniform dispersion of the zirconium nanotubes, preventing agglomeration and failure, thus providing an efficient and reliable solution for metal protection in corrosive environments. Detailed Implementation

[0028] The present invention will be further described below with reference to embodiments and comparative examples.

[0029] The raw materials used in the following examples and comparative examples were: sodium alkyl polyoxyethylene ether sulfate, purchased from Guangzhou Siteyuan Chemical Co., Ltd.; and alkyl polyoxyethylene ether, purchased from Qingdao Gudao Technology Co., Ltd.

[0030] In the following examples and comparative examples, the unit "parts" refers to parts by mass.

[0031] Example 1

[0032] S1. Preparation of aqueous inorganic hybrid emulsions:

[0033] S11. Alkyl polyoxyethylene ether sodium sulfate and alkyl polyoxyethylene ether are mixed in a mass ratio of 1:1 to prepare an emulsifier;

[0034] A silicon monomer was prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5.

[0035] Butyl acrylate, methyl methacrylate, and methacrylic acid were mixed in a mass ratio of 45:22:1 to prepare an acrylate monomer.

[0036] S12. Under nitrogen protection, mix 4 parts emulsifier, 40 parts water, and 3 parts silicon monomer (accounting for 10% of the mass of silicon monomer, totaling 30 parts). After reacting at 77°C for 20 min, add the remaining silicon monomer and 2.5 parts n-butoxide zirconium and continue reacting for 3 h. Cool down and then adjust the pH value to 7-8 with ammonia water (concentration 22-25%) to obtain organosilicon emulsion.

[0037] S13. Mix 68 parts of acrylate monomer, 3 parts of emulsifier, 2.3 parts of KH-570, and 40 parts of water to prepare a pre-emulsion. Take 6 parts of the pre-emulsion (accounting for 10% of the total mass of the pre-emulsion, with a total of 60 parts) and mix it with the organosilicon emulsion. Heat the mixture to 85°C and add 0.16 parts of ammonium sulfate APS (accounting for 40% of the total mass of the initiator, with a total of 0.4 parts). After reacting for 20 minutes, add the remaining pre-emulsion and ammonium sulfate APS, and react at 85°C for 2 hours. Cool down, adjust the pH to 8-9 with ammonia water (concentration 22-25%), and filter.

[0038] S2. Preparation of zirconium nanotubes:

[0039] S21. Dissolve 53.7 parts of zirconium oxychloride octahydrate in 1 part of N,N-dimethylformamide (DMF) to form a zirconium precursor solution;

[0040] S22. Add 99.7 parts of 1,3,6,8-tetrakis(4-carboxyphenyl)pyrene, 71.2 parts of benzoic acid and 25 parts of deionized water to the zirconium precursor solution in sequence, mix and then sonicate for 15 minutes;

[0041] S23. Place the mixed solution in a sealed reaction vessel and react at 120°C for 24 hours. After the reaction is complete, cool to room temperature and separate the solid product.

[0042] S24. The solid product was washed sequentially with DMF, anhydrous ethanol and deionized water. The washed product was dispersed in water and freeze-dried to obtain zirconium nanotubes.

[0043] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 4 parts zirconium nanotubes, 0.5 parts dispersant THIXATROLMAX, and water were pre-ground for 10 min, and then mixed with 40 parts waterborne inorganic hybrid emulsion and 0.2 parts defoamer BYK-024 until uniform. The amount of water was controlled to be 45% non-volatile to obtain waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0044] Example 2

[0045] S1-S2: Same as Example 1.

[0046] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 5 parts zirconium nanotubes, 0.5 parts dispersant THIXATROLMAX, and water were pre-ground for 10 min, and then mixed with 40 parts waterborne inorganic hybrid emulsion and 0.2 parts defoamer BYK-024 until uniform. The amount of water was controlled to be 45% non-volatile, thus obtaining waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0047] Example 3

[0048] S1-S2: Same as Example 1.

[0049] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 7 parts zirconium nanotubes, 0.5 parts dispersant THIXATROLMAX, and water were pre-ground for 10 min, and then mixed evenly with 40 parts waterborne inorganic hybrid emulsion and 0.2 parts defoamer BYK-024. The amount of water was controlled to be 45% non-volatile to obtain waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0050] Example 4

[0051] S1-S2: Same as Example 1.

[0052] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 4 parts zirconium nanotubes, 1 part dispersant THIXATROLMAX, and water were pre-ground for 20 min, and then mixed evenly with 30 parts waterborne inorganic hybrid emulsion and 0.1 part defoamer BYK-024. The amount of water was controlled to be 50% non-volatile to obtain waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0053] Example 5

[0054] S1-S2: Same as Example 1.

[0055] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 6 parts of zirconium nanotubes, 0.6 parts of dispersant THIXATROLMAX, and water were pre-ground for 20 min, and then mixed evenly with 35 parts of waterborne inorganic hybrid emulsion and 0.3 parts of defoamer BYK-024. The amount of water was controlled to have a non-volatile content of 47%, and the waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating was obtained.

[0056] Example 6

[0057] S1: Preparation of aqueous inorganic hybrid emulsion:

[0058] S11. Alkyl polyoxyethylene ether sodium sulfate and alkyl polyoxyethylene ether are mixed in a mass ratio of 1:1 to prepare an emulsifier;

[0059] A silicon monomer was prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5.

[0060] Butyl acrylate, methyl methacrylate, and methacrylic acid were mixed in a mass ratio of 45:22:1 to prepare an acrylate monomer.

[0061] S12. Under nitrogen protection, mix 4 parts emulsifier, 40 parts water, and 3 parts silicon monomer (accounting for 10% of the mass of silicon monomer, totaling 30 parts). After reacting at 77°C for 20 min, add the remaining silicon monomer and 3.5 parts n-butoxide zirconium and continue reacting for 3 h. Cool down and then adjust the pH value to 7-8 with ammonia water (concentration 22-25%) to obtain organosilicon emulsion.

[0062] S13. Mix 68 parts of acrylate monomer, 3 parts of emulsifier, 2.3 parts of KH-570, and 40 parts of water to prepare a pre-emulsion. Take 6 parts of the pre-emulsion (accounting for 10% of the total mass of the pre-emulsion, with a total of 60 parts) and mix it with the organosilicon emulsion. Heat the mixture to 85°C and add 0.16 parts of ammonium sulfate APS (accounting for 40% of the total mass of the initiator, with a total of 0.4 parts). After reacting for 20 minutes, add the remaining pre-emulsion and ammonium sulfate APS, and react at 85°C for 2 hours. Cool down, adjust the pH to 8-9 with ammonia water (concentration 22-25%), and filter.

[0063] S2-S3: Same as Example 1.

[0064] Example 7

[0065] S1: Preparation of aqueous inorganic hybrid emulsion:

[0066] S11. Alkyl polyoxyethylene ether sodium sulfate and alkyl polyoxyethylene ether are mixed in a mass ratio of 1:1 to prepare an emulsifier;

[0067] A silicon monomer was prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5.

[0068] Butyl acrylate, methyl methacrylate, and methacrylic acid were mixed in a mass ratio of 45:22:1 to prepare an acrylate monomer.

[0069] S12. Under nitrogen protection, mix 4 parts emulsifier, 40 parts water, and 3 parts silicon monomer (accounting for 10% of the mass of silicon monomer, totaling 30 parts). After reacting at 77°C for 20 min, add the remaining silicon monomer and 4.5 parts n-butoxide zirconium and continue reacting for 3 h. Cool down and then adjust the pH value to 7-8 with ammonia water (concentration 22-25%) to obtain organosilicon emulsion.

[0070] S13. Mix 68 parts of acrylate monomer, 3 parts of emulsifier, 2.3 parts of KH-570, and 40 parts of water to prepare a pre-emulsion. Take 6 parts of the pre-emulsion (accounting for 10% of the total mass of the pre-emulsion, with a total of 60 parts) and mix it with the organosilicon emulsion. Heat the mixture to 85°C and add 0.16 parts of ammonium sulfate APS (accounting for 40% of the total mass of the initiator, with a total of 0.4 parts). After reacting for 20 minutes, add the remaining pre-emulsion and ammonium sulfate APS, and react at 85°C for 2 hours. Cool down, adjust the pH to 8-9 with ammonia water (concentration 22-25%), and filter.

[0071] S2-S3: Same as Example 1.

[0072] Comparative Example 1

[0073] S1. Same as S1 in Example 1.

[0074] S2. Preparation of water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating: Mix 0.5 parts of dispersant THIXATROL MAX, 0.2 parts of defoamer BYK-024, and 40 parts of water-based inorganic hybrid emulsion evenly, and control the amount of water to 45% of the non-volatile content to obtain water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0075] Comparative Example 2

[0076] S1-S2: Same as Example 1.

[0077] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 10 parts of zirconium nanotubes, 0.5 parts of dispersant THIXATROL MAX, and water were pre-ground for 10 min, and then mixed with 40 parts of waterborne inorganic hybrid emulsion and 0.2 parts of defoamer BYK-024. The amount of water was controlled to be 45% non-volatile, and the waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating was obtained.

[0078] Comparative Example 3

[0079] S1. Preparation of aqueous inorganic hybrid emulsions:

[0080] S11. Alkyl polyoxyethylene ether sodium sulfate and alkyl polyoxyethylene ether are mixed in a mass ratio of 1:1 to prepare an emulsifier;

[0081] A silicon monomer was prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5.

[0082] Butyl acrylate, methyl methacrylate, and methacrylic acid were mixed in a mass ratio of 45:22:1 to prepare an acrylate monomer.

[0083] S12. Under nitrogen protection, mix 4 parts emulsifier, 40 parts water, and 3 parts silicon monomer (accounting for 10% of the mass of silicon monomer, for a total of 30 parts). After reacting at 77°C for 20 min, add the remaining silicon monomer and continue reacting for 3 h. Cool down and then adjust the pH value to 7-8 with ammonia water (concentration 22-25%) to obtain organosilicon emulsion.

[0084] S13. Mix 68 parts of acrylate monomer, 3 parts of emulsifier, 2.3 parts of KH-570, and 40 parts of water to prepare a pre-emulsion. Take 6 parts of the pre-emulsion (accounting for 10% of the total mass of the pre-emulsion, with a total of 60 parts) and mix it with the organosilicon emulsion. Heat the mixture to 85°C and add 0.16 parts of ammonium sulfate APS (accounting for 40% of the total mass of the initiator, with a total of 0.4 parts). After reacting for 20 minutes, add the remaining pre-emulsion and ammonium sulfate APS and react at 87°C for 2 hours. Cool down the mixture and adjust the pH to 8-9 with ammonia water (concentration 22-25%). Filter the mixture.

[0085] S2. Preparation of zirconium nanotubes: Same as S2 in Example 1.

[0086] S3. Preparation of waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating: 4 parts zirconium nanotubes, 0.5 parts dispersant THIXATROLMAX, and water were pre-ground for 10 min, and then mixed with 40 parts waterborne inorganic hybrid emulsion and 0.2 parts defoamer BYK-024 until uniform. The amount of water was controlled to be 45% non-volatile to obtain waterborne inorganic hybrid corrosion-inhibiting and anti-corrosion coating.

[0087] Comparative Example 4

[0088] S1: Preparation of aqueous inorganic hybrid emulsion:

[0089] S11. Alkyl polyoxyethylene ether sodium sulfate and alkyl polyoxyethylene ether are mixed in a mass ratio of 1:1 to prepare an emulsifier;

[0090] A silicon monomer was prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5.

[0091] Butyl acrylate, methyl methacrylate, and methacrylic acid were mixed in a mass ratio of 45:22:1 to prepare an acrylate monomer.

[0092] S12. Under nitrogen protection, mix 4 parts emulsifier, 40 parts water, and 3 parts silicon monomer (accounting for 10% of the mass of silicon monomer, totaling 30 parts). After reacting at 77°C for 20 min, add the remaining silicon monomer and 5.5 parts n-butoxide zirconium and continue reacting for 3 h. Cool down and then adjust the pH value to 7-8 with ammonia water (concentration 22-25%) to obtain organosilicon emulsion.

[0093] S13. Mix 68 parts of acrylate monomer, 3 parts of emulsifier, 2.3 parts of KH-570, and 40 parts of water to prepare a pre-emulsion. Take 6 parts of the pre-emulsion (accounting for 10% of the total mass of the pre-emulsion, with a total of 60 parts) and mix it with the organosilicon emulsion. Heat the mixture to 85°C and add 0.16 parts of ammonium sulfate APS (accounting for 40% of the total mass of the initiator, with a total of 0.4 parts). After reacting for 20 minutes, add the remaining pre-emulsion and ammonium sulfate APS, and react at 85°C for 2 hours. Cool down, adjust the pH to 8-9 with ammonia water (concentration 22-25%), and filter.

[0094] S2-S3: Same as Example 1.

[0095] Table 1. Salt spray corrosion resistance test results of the coatings in the examples and comparative examples.

[0096]

[0097] This invention optimizes the structure of an aqueous inorganic hybrid emulsion and incorporates zirconium nanotubes to prepare an aqueous inorganic hybrid corrosion-inhibiting coating. Further optimization of the zirconium nanotube content and the process of the aqueous inorganic hybrid emulsion significantly improves the overall performance of the coating. Data from Examples 1-3 show that as the amount of zirconium nanotubes added increases from 10 parts to 15 parts, the salt spray resistance increases from 720 hours to 850 hours, and the adhesion reaches the optimal level 0. However, the lack of zirconium nanotubes (Comparative Example 1) or excessive addition (Comparative Example 2) both lead to a significant decrease in performance, confirming the corrosion-inhibiting effect of zirconium nanotubes. Meanwhile, data from Examples 1 and 6-7 show that the introduction of zirconium butoxide in the hybrid emulsion is crucial for improving corrosion resistance. The absence of zirconium butoxide in the aqueous inorganic hybrid emulsion (Comparative Example 3) or its excessive addition (Comparative Example 4) significantly reduces the salt spray resistance. The coating design of this invention optimizes the inorganic-organic interface and nano-reinforcement effect through the synergistic effect of water-based inorganic hybrid emulsion and zirconium nanotubes, providing a reliable solution for the industrial application of water-based anti-corrosion coatings.

[0098] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating, characterized in that, The product is composed of the following raw materials in parts by weight: 30-40 parts of aqueous inorganic hybrid emulsion, 4-7 parts of zirconium nanotubes, 0.5-1 parts of dispersant, 0.1-0.3 parts of defoamer, and water content controlled to 45-50% of non-volatile components; the aqueous inorganic hybrid emulsion is prepared from silicon monomer, zirconium n-butoxide, acrylate monomer, and KH-570; the silicon monomer is prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane, and 3-(methacryloyloxy)propyltrimethoxysilane; the acrylate monomer is prepared by mixing butyl acrylate, methyl methacrylate, and methacrylic acid.

2. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 1, characterized in that, The dispersant is THIXATROL MAX; the defoamer is BYK-024.

3. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 1, characterized in that, The method for preparing the aqueous inorganic hybrid emulsion includes the following steps: a) Under nitrogen protection, emulsifier, water and part of silicon monomer are mixed and reacted at 75~81℃ for 20~30 min. Then, the remaining silicon monomer and zirconium n-butoxide are added and the reaction is continued for 3~5 h. The temperature is then lowered and the pH value is adjusted to 7~8 to obtain organosilicon emulsion. b) Mix acrylate monomer, emulsifier, KH-570 and water evenly to prepare a pre-emulsion; take a portion of the pre-emulsion and mix it with the silicone emulsion, heat to 84-86℃, add a portion of the initiator, react for 20-30 minutes, then add the remaining pre-emulsion and initiator, react at 82-89℃ for 2 hours; cool down, adjust the pH to 8-9, and filter.

4. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 3, characterized in that, The emulsifier is obtained by mixing sodium alkyl polyoxyethylene ether sulfate and alkyl polyoxyethylene ether in a mass ratio of 1:1; the emulsifier in step a) is 10-18% of the total mass of silicon monomers; the emulsifier in step b) is 3-5% of the total mass of silicon monomers.

5. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 3, characterized in that, The silicon monomer is prepared by mixing decamethyltetrasiloxane, 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 24:4.5:1.5; the mass ratio of zirconium n-butoxide to silicon monomer is 2.5~4.5:

30.

6. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 3, characterized in that, The acrylate monomers are prepared by mixing butyl acrylate, methyl methacrylate, and methacrylic acid in a mass ratio of 45:22:1; the mass of KH570 is 3-5% of the acrylate monomers.

7. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 3, characterized in that, The mass ratio of the silicon monomer to the acrylate monomer is 25~35:60~70.

8. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 3, characterized in that, The initiator is ammonium persulfate (APS); the initiator mass is 0.5-0.8 wt% of the acrylate monomer.

9. The water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 1, characterized in that, The method for preparing the zirconium nanotubes includes the following steps: 1) Dissolve zirconium oxychloride octahydrate in N,N-dimethylformamide to form a zirconium precursor solution; 2) Add 1,3,6,8-tetra(4-carboxyphenyl)pyrene, benzoic acid and deionized water to the zirconium precursor solution in sequence, mix and then sonicate for 15 minutes; 3) Place the mixed solution in a sealed reaction vessel and react at 120°C for 24 hours. After the reaction is complete, cool to room temperature and separate the solid product. 4) The solid product was washed sequentially with DMF, anhydrous ethanol and deionized water. The washed product was dispersed in water and freeze-dried to obtain zirconium nanotubes. The mass ratio of zirconium oxychloride octahydrate, 1,3,6,8-tetra(4-carboxyphenyl)pyrene, benzoic acid and 25 parts of deionized water is 53.7:99.7:71.2:

25.

10. A method for preparing a water-based inorganic hybrid corrosion-inhibiting and anti-corrosion coating as described in claim 1, characterized in that: The process includes the following steps: pre-grinding zirconium nanotubes with a dispersant and some water for 10-20 minutes, then mixing them evenly with an aqueous inorganic hybrid emulsion and a defoamer to obtain an aqueous inorganic hybrid corrosion-inhibiting coating.

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