Antibacterial and self-repairing concrete anticorrosive coating and preparation method thereof

Abstract

The application discloses a kind of concrete anticorrosive coating with antibacterial and self-repairing and preparation method thereof, the anticorrosive coating includes the following weight parts of raw materials: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyvinylamine resin, 10-25 parts silicone resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent and 30-50 parts filler;The multifunctional curing agent includes the following weight parts of raw materials: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate and 5-15 parts allyl methyl disulfide.The concrete anticorrosive coating of the application contains multifunctional curing agent, which has thiocyanate group and disulfide group, the thiocyanate group can effectively inhibit the activity of escherichia coli and staphylococcus aureus, prevent escherichia coli and staphylococcus aureus from corroding the coating, and improve the service life of the anticorrosive coating;Disulfide group can undergo reversible rupture and recombination, with self-repairing ability.

Description

Technical Field

[0001] This invention relates to the field of building corrosion protection materials technology, specifically to a concrete corrosion protection coating that combines antibacterial and self-healing properties and its preparation method. Background Technology

[0002] In recent years, concrete has been widely used in hydropower dams, cross-sea bridges, coastal engineering projects, and island and reef construction. Due to its excellent properties such as ease of pouring, impact resistance, and wear resistance, concrete structures have become an indispensable component of infrastructure construction. However, during use, concrete is exposed to sunlight and rain for extended periods, and water, ions, and microorganisms can cause corrosion, resulting in significant economic losses and serious safety hazards. Therefore, concrete structure protection technology has gradually become a hot topic of concern.

[0003] Coating protection is one of the most effective measures in concrete protection technology. However, traditional concrete protection materials usually lack antibacterial properties and cannot prevent E. coli and Staphylococcus aureus in sewage from corroding the anti-corrosion coating. Consequently, the anti-corrosion coating cannot effectively protect the concrete, leading to a decrease in concrete strength. Furthermore, traditional concrete protection materials lack self-healing properties; when defects develop in the protective material, ions and microorganisms can penetrate through these defects, accelerating concrete corrosion. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that traditional concrete protective materials lack antibacterial and self-healing properties, and to provide a concrete anti-corrosion coating that combines antibacterial and self-healing properties and its preparation method.

[0005] To achieve the above objectives, the present invention provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials in parts by weight: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyethyleneamine resin, 10-25 parts organosilicon resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent, and 30-50 parts filler; wherein the multifunctional curing agent comprises the following raw materials in parts by weight: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate, and 5-15 parts allyl methyl disulfide.

[0006] Optionally, the concrete anti-corrosion coating comprises the following raw materials in parts by weight: 40 parts alicyclic epoxy resin, 120 parts vinyl resin, 30 parts multifunctional curing agent, 10 parts polyethyleneamine resin, 15 parts silicone resin, 2 parts silane coupling agent, 1 part initiator, 5 parts epoxy resin curing agent, and 40 parts filler; the multifunctional curing agent comprises the following raw materials in parts by weight: 10 parts vinyl epoxy, 15 parts allyl thiocyanate, and 5 parts allyl methyl disulfide.

[0007] Optionally, the initiator mentioned above is azobisisobutyronitrile or benzoyl peroxide.

[0008] Optionally, the silane coupling agent mentioned above is γ-aminopropyltriethoxysilane or γ-glycidoxypropyltrimethoxysilane.

[0009] Optionally, the epoxy resin curing agent mentioned above is at least one of methylhexahydrophthalic anhydride, maleic anhydride, and phthalic anhydride.

[0010] Optionally, the filler is at least one of talc, wollastonite, and feldspar.

[0011] Optionally, the above-mentioned concrete anti-corrosion coating may further include 2-5 parts by weight of a leveling agent, wherein the leveling agent is at least one of BYK 320, UK 384S, and UK 385S.

[0012] This invention also provides a method for preparing the above-mentioned antibacterial and self-healing concrete anti-corrosion coating, comprising the following steps: Alicyclic epoxy resin, vinyl resin, multifunctional curing agent, polyethyleneamine resin, organosilicon resin, silane coupling agent, filler and leveling agent are mixed, and then epoxy resin curing agent and initiator are added to obtain the antibacterial and self-healing concrete anti-corrosion coating.

[0013] Optionally, the preparation temperature of the anti-corrosion coating is controlled at 20-30℃.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) The concrete anti-corrosion coating of the present invention contains a multifunctional curing agent, which has thiocyanate groups and disulfide groups. The thiocyanate groups can effectively inhibit the activity of Escherichia coli and Staphylococcus aureus, prevent Escherichia coli and Staphylococcus aureus from corroding the coating, and improve the service life of the anti-corrosion coating. The disulfide groups can undergo reversible breakage and recombination, and have self-repairing ability. For example, the disulfide bonds in the two disulfide groups can directly exchange sulfur atoms to form two new disulfide bonds. When the coating is damaged and local disulfide bonds break, the broken disulfide bonds can exchange sulfur atoms with the adjacent disulfide bonds to reform two new disulfide bonds to fill the damaged area, so that the coating has self-repairing ability.

[0015] (2) The organosilicon resin and silane coupling agent components of this invention can synergistically improve the water erosion resistance of the anti-corrosion coating: Organosilicon resins have a high water contact angle, and adding them to anti-corrosion coatings can enhance the hydrophobicity of the coatings; silane coupling agents can react with Ca in concrete. 2+Bonding enhances the adhesion of the anti-corrosion coating to concrete, improves the erosion resistance of the anti-corrosion coating, and ultimately forms a highly hydrophobic and highly erosion-resistant dual-interface reinforced coating, thereby increasing the anti-corrosion life of the anti-corrosion coating.

[0016] (3) The alicyclic epoxy resin of the present invention can improve the anti-corrosion performance of the coating: Because the epoxy groups in alicyclic epoxy resins are directly attached to the alicyclic rings, they are easily rotated or deformed, allowing for "flexible fixation" of the epoxy groups. This enables the epoxy groups attached to the carbon chain to rotate freely. This "flexible fixation" structure reduces the resistance to molecular chain movement in alicyclic epoxy resins, resulting in a more compact molecular arrangement. After curing, the crosslinking density increases, improving the coating's density and enhancing its anti-corrosion performance. Attached Figure Description

[0017] Figure 1 This is a diagram showing the recovery of the anti-corrosion coating after bending in Example 1; A is a scanning electron microscope image of the anti-corrosion coating after bending; B is a scanning electron microscope image of the anti-corrosion coating after bending for 30 days. Detailed Implementation

[0018] The following embodiments further illustrate the technical solution of the present invention.

[0019] As described in the background section, traditional concrete protective materials typically lack antibacterial properties and cannot prevent corrosion from E. coli and Staphylococcus aureus in sewage, leading to a decrease in concrete strength. Furthermore, traditional concrete protective materials lack self-healing properties; when defects develop, ions and microorganisms can penetrate from these defects, accelerating concrete corrosion.

[0020] To address the aforementioned problems, this invention provides a concrete anti-corrosion coating that combines antibacterial and self-healing properties, comprising the following raw materials in weight percentages: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyethyleneamine resin, 10-25 parts organosilicon resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent, and 30-50 parts filler; wherein the multifunctional curing agent comprises the following raw materials in parts by weight: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate, and 5-15 parts allyl methyl disulfide.

[0021] The multifunctional curing agent of the present invention is synthesized by free radical copolymerization of vinyl epoxy, allyl thiocyanate, and allyl methyl disulfide: under the action of free radicals generated by the initiator upon exposure to light / heat, the free radicals open the unsaturated double bonds in vinyl epoxy, allyl thiocyanate, and allyl methyl disulfide, allowing the three to undergo multiple addition reactions, as shown in the following reaction formula: Where n ranges from 5 to 15, m ranges from 10 to 20, and p ranges from 10 to 20.

[0022] The above-mentioned products contain thiocyanate groups and disulfide groups. The thiocyanate groups can effectively inhibit the activity of Escherichia coli and Staphylococcus aureus, preventing them from corroding the anti-corrosion coating; the disulfide groups endow the coating with self-healing ability. Disulfide bonds in disulfide groups can undergo reversible breakage and recombination. For example, disulfide bonds in two disulfide groups can directly exchange sulfur atoms to form two new disulfide bonds. This dynamic exchange characteristic means that when coating damage leads to localized disulfide bond breakage, the broken disulfide bonds can exchange sulfur atoms with neighboring disulfide bonds to reform two new disulfide bonds and fill the damaged area, thereby repairing scratches or damage (scratch repair rate 48%@60℃ / 2h).

[0023] Furthermore, the organosilicon resin and silane coupling agent components of this invention can synergistically improve the water erosion resistance of the anti-corrosion coating: Organosilicon resins have a high water contact angle (≥110°), and their addition to anti-corrosion coatings can enhance the hydrophobicity of the coatings; silane coupling agents can react with Ca in concrete. 2+ The bonding process forms Si-O-Ca bonds, which enhance the adhesion of the anti-corrosion coating to concrete (adhesion ≥ 2.5 MPa), improves the erosion resistance of the anti-corrosion coating, and ultimately forms a highly hydrophobic and highly erosion-resistant dual-interface reinforced coating, thereby increasing the anti-corrosion life of the anti-corrosion coating.

[0024] In some embodiments, the silane coupling agent is γ-aminopropyltriethoxysilane (KH-550) or γ-glycidoxypropyltrimethoxysilane.

[0025] In some embodiments, the initiator is azobisisobutyronitrile (AIBN) or benzoyl peroxide.

[0026] In some embodiments, the epoxy resin curing agent is at least one of methylhexahydrophthalic anhydride, maleic anhydride, and phthalic anhydride.

[0027] The following is a detailed description with reference to specific embodiments. In the following embodiments, the alicyclic epoxy resin was purchased from Guangzhou Taiji New Materials Co., Ltd., the vinyl resin from Jiangyin Wanqian Chemical Co., Ltd., the polyethyleneamine resin from Wuhan Lanabai Pharmaceutical Chemical Co., Ltd., the organosilicon resin from Anmi Micro-Nano New Materials (Guangzhou) Co., Ltd., the maleic anhydride from Shandong Longhui Chemical Co., Ltd., the vinyl epoxy resin from Shanghai Huayuan Biochemical Technology Co., Ltd., the allyl thiocyanate from Hubei Xinghengye Technology Co., Ltd., the allyl methyl disulfide from Zhongshan Dixin Chemical Co., Ltd., and the azobisisobutyronitrile from Jinan Quansheng Chemical Co., Ltd. The remaining raw materials and reagents were obtained through conventional purchases.

[0028] Example 1 This embodiment provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials by weight percentage: 30 parts alicyclic epoxy resin, 120 parts vinyl resin, 32.5 parts multifunctional curing agent (10 parts vinyl epoxy, 15 parts allyl thiocyanate and 7.5 parts allyl methyl disulfide), 10 parts polyethyleneamine resin, 15 parts silicone resin, 2 parts silane coupling agent (KH-550), 1 part initiator (AIBN), 5 parts epoxy resin curing agent (maleic anhydride), 40 parts filler (talc), and 3 parts leveling agent.

[0029] The preparation method of this anti-corrosion coating is as follows: (1) Synthesis of multifunctional curing agent: Vinyl epoxy, allyl thiocyanate and allyl methyl disulfide are mixed in a ratio of 10:15:7.5; (2) Coating preparation: Mix alicyclic epoxy resin, vinyl resin, multifunctional curing agent obtained in step (1), polyethyleneamine resin, organosilicon resin, silane coupling agent, initiator, epoxy resin curing agent, filler and leveling agent, stir at 25°C for 0.5-1 hour, and filter to obtain the finished product.

[0030] The anti-corrosion coating is applied to a concrete structure, heat-treated at 80℃ for 2 hours, and then cured at room temperature for 24 hours to solidify the coating and obtain an anti-corrosion coating layer.

[0031] The anti-corrosion coating of this embodiment was bent and scanned by electron microscopy, then left to stand naturally for 30 days before being scanned by electron microscopy again to observe the recovery of the coating. Figure 1 As shown, from Figure 1 It can be seen that the anti-corrosion coating in this embodiment has a certain self-healing ability.

[0032] Example 2 This embodiment provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials by weight percentage: 30 parts alicyclic epoxy resin, 120 parts vinyl resin, 30 parts multifunctional curing agent (10 parts vinyl epoxy, 15 parts allyl thiocyanate and 5 parts allyl methyl disulfide), 10 parts polyethyleneamine resin, 15 parts silicone resin, 2 parts silane coupling agent (KH-550), 1 part initiator (AIBN), 5 parts epoxy resin curing agent (maleic anhydride), 40 parts filler (talc), and 3 parts leveling agent.

[0033] The preparation method of this anti-corrosion coating is as follows: (1) Synthesis of multifunctional curing agent: Vinyl epoxy, allyl thiocyanate and allyl methyl disulfide are mixed in a ratio of 10:15:5; (2) Coating preparation: Mix alicyclic epoxy resin, vinyl resin, multifunctional curing agent obtained in step (1), polyethyleneamine resin, organosilicon resin, silane coupling agent, initiator, epoxy resin curing agent, filler and leveling agent, stir at 25°C for 0.5-1 hour, and filter to obtain the finished product.

[0034] The anti-corrosion coating is applied to a concrete structure, heat-treated at 80℃ for 2 hours, and then cured at room temperature for 24 hours to solidify the coating and obtain an anti-corrosion coating layer.

[0035] Example 3 This embodiment provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials by weight percentage: 30 parts alicyclic epoxy resin, 120 parts vinyl resin, 40 parts multifunctional curing agent (10 parts vinyl epoxy, 15 parts allyl thiocyanate and 15 parts allyl methyl disulfide), 10 parts polyethyleneamine resin, 15 parts silicone resin, 1 part AIBN, 5 parts epoxy resin curing agent (maleic anhydride), 40 parts filler (talc), 3 parts leveling agent, without the addition of KH-550 silane coupling agent.

[0036] The preparation method of this anti-corrosion coating is as follows: (1) Synthesis of multifunctional curing agent: Vinyl epoxy, allyl thiocyanate and allyl methyl disulfide are mixed in a ratio of 10:15:15; (2) Coating preparation: Mix alicyclic epoxy resin, vinyl resin, multifunctional curing agent obtained in step (1), polyethyleneamine resin, organosilicon resin, initiator, epoxy resin curing agent, filler and leveling agent, stir at 25°C for 0.5-1 hour, and filter to obtain the finished product.

[0037] The anti-corrosion coating is applied to a concrete structure, heat-treated at 80℃ for 2 hours, and then cured at room temperature for 24 hours to solidify the coating and obtain an anti-corrosion coating layer.

[0038] Example 4 This embodiment provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials in weight percentages: 20 parts alicyclic epoxy resin, 120 parts vinyl resin, 30 parts multifunctional curing agent (10 parts vinyl epoxy, 15 parts allyl thiocyanate and 5 parts allyl methyl disulfide), 10 parts polyethyleneamine resin, 15 parts silicone resin, 2 parts silane coupling agent (KH-550), 1 part AIBN, 5 parts epoxy resin curing agent (maleic anhydride), 40 parts filler (talc), and 3 parts leveling agent.

[0039] The preparation method of this anti-corrosion coating is as follows: (1) Synthesis of multifunctional curing agent: Vinyl epoxy, allyl thiocyanate and allyl methyl disulfide are mixed in a ratio of 10:15:5; (2) Coating preparation: Mix alicyclic epoxy resin, vinyl resin, multifunctional curing agent obtained in step (1), polyethyleneamine resin, organosilicon resin, silane coupling agent, initiator, epoxy resin curing agent, filler and leveling agent, stir at 25°C for 0.5-1 hour, and filter to obtain the finished product.

[0040] The anti-corrosion coating is applied to a concrete structure, heat-treated at 80℃ for 2 hours, and then cured at room temperature for 24 hours to solidify the coating and obtain an anti-corrosion coating layer.

[0041] Example 5 This embodiment provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials by weight percentage: 40 parts alicyclic epoxy resin, 120 parts vinyl resin, 30 parts multifunctional curing agent (10 parts vinyl epoxy, 15 parts allyl thiocyanate and 5 parts allyl methyl disulfide), 10 parts polyethyleneamine resin, 15 parts silicone resin, 2 parts silane coupling agent (KH-550), 1 part AIBN, 5 parts epoxy resin curing agent (maleic anhydride), 40 parts filler (talc), and 3 parts leveling agent.

[0042] The preparation method of this anti-corrosion coating is as follows: (1) Synthesis of multifunctional curing agent: Vinyl epoxy, allyl thiocyanate and allyl methyl disulfide are mixed in a ratio of 10:15:5; (2) Coating preparation: Mix alicyclic epoxy resin, vinyl resin, multifunctional curing agent obtained in step (1), polyethyleneamine resin, organosilicon resin, silane coupling agent, initiator, epoxy resin curing agent, filler and leveling agent, stir at 25°C for 0.5-1 hour, and filter to obtain the finished product.

[0043] The anti-corrosion coating is applied to a concrete structure, heat-treated at 80℃ for 2 hours, and then cured at room temperature for 24 hours to solidify the coating and obtain an anti-corrosion coating layer.

[0044] Example 6 This embodiment provides a concrete anti-corrosion coating with both antibacterial and self-healing properties, comprising the following raw materials by weight percentage: 30 parts alicyclic epoxy resin, 120 parts vinyl resin, 35 parts multifunctional curing agent (10 parts vinyl epoxy, 20 parts allyl thiocyanate and 5 parts allyl methyl disulfide), 10 parts polyethyleneamine resin, 25 parts silicone resin, 2 parts silane coupling agent (KH-550), 1 part AIBN, 5 parts epoxy resin curing agent (maleic anhydride), 40 parts filler (talc), and 3 parts leveling agent.

[0045] The preparation method of this anti-corrosion coating is as follows: (1) Synthesis of multifunctional curing agent: Vinyl epoxy, allyl thiocyanate and allyl methyl disulfide are mixed in a ratio of 10:20:5; (2) Coating preparation: Mix alicyclic epoxy resin, vinyl resin, multifunctional curing agent obtained in step (1), polyethyleneamine resin, organosilicon resin, silane coupling agent, initiator, epoxy resin curing agent, filler and leveling agent, stir at 25°C for 0.5-1 hour, and filter to obtain the finished product.

[0046] The anti-corrosion coating is applied to a concrete structure, heat-treated at 80℃ for 2 hours, and then cured at room temperature for 24 hours to solidify the coating and obtain an anti-corrosion coating layer.

[0047] The properties of the anti-corrosion coatings prepared in Examples 1-6 of this invention were tested, and the results are shown in Table 1.

[0048] Table 1 Performance test results of anti-corrosion coating As can be seen from Table 1, the anti-corrosion coating prepared in Example 6 has the highest antibacterial rate, and the anti-corrosion coating prepared in Example 5 has the greatest impermeability. This is mainly because the thiocyanate groups can effectively inhibit the activity of Escherichia coli and Staphylococcus aureus. After the alicyclic epoxy resin is cured, the crosslinking density increases, which can improve the density of the coating and improve the impermeability of the coating.

[0049] In summary, this invention provides a concrete anti-corrosion coating that combines antibacterial and self-healing properties, comprising the following raw materials in parts by weight: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyethyleneamine resin, 10-20 parts organosilicon resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent, and 30-50 parts filler; the multifunctional curing agent comprises the following raw materials in parts by weight: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate, and 5-15 parts allyl methyl disulfide. The alicyclic epoxy resin of this invention can improve the impermeability of the anti-corrosion coating, and the organosilicon resin improves the water repellency, thereby enhancing the anti-corrosion performance of the coating, protecting concrete from erosion, and improving the anti-corrosion performance of concrete. The anti-corrosion coating has a certain self-healing ability, which can improve the anti-corrosion effect through self-repair when the anti-corrosion coating is damaged by external forces. The antibacterial and self-healing properties are enhanced by the thiocyanate and disulfide groups in the multifunctional curing agent. The thiocyanate groups can effectively inhibit the activity of Escherichia coli and Staphylococcus aureus, preventing them from corroding concrete and improving the antibacterial properties of the coating. The presence of disulfide groups provides a certain degree of repair capability when the coating is damaged, thus improving the anti-corrosion performance of the coating.

[0050] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A concrete anti-corrosion coating with both antibacterial and self-healing properties, characterized in that, The raw materials include the following parts by weight: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyethyleneamine resin, 10-25 parts silicone resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent, and 30-50 parts filler; The multifunctional curing agent comprises the following raw materials in parts by weight: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate and 5-15 parts allyl methyl disulfide.

2. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 1, characterized in that, The raw materials include the following parts by weight: 40 parts alicyclic epoxy resin, 120 parts vinyl resin, 30 parts multifunctional curing agent, 10 parts polyethyleneamine resin, 15 parts silicone resin, 2 parts silane coupling agent, 1 part initiator, 5 parts epoxy resin curing agent and 40 parts filler. The multifunctional curing agent comprises the following raw materials in parts by weight: 10 parts vinyl epoxy, 15 parts allyl thiocyanate and 5 parts allyl methyl disulfide.

3. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 1, characterized in that, The initiator is azobisisobutyronitrile or benzoyl peroxide.

4. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 1, characterized in that, The silane coupling agent is γ-aminopropyltriethoxysilane or γ-glycidoxypropyltrimethoxysilane.

5. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 1, characterized in that, The epoxy resin curing agent is at least one of methylhexahydrophthalic anhydride, maleic anhydride, and phthalic anhydride.

6. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 1, characterized in that, The filler is at least one of talc powder, wollastonite powder, and feldspar powder.

7. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 1, characterized in that, It also includes 2-5 parts by weight of leveling agent.

8. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 7, characterized in that, The leveling agent is at least one of BYK320, Yoka 384S, and Yoka 385S.

9. A method for preparing a concrete anti-corrosion coating with both antibacterial and self-healing properties as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Alicyclic epoxy resin, vinyl resin, multifunctional curing agent, polyethyleneamine resin, organosilicon resin, silane coupling agent, filler and leveling agent are mixed, and then epoxy resin curing agent and initiator are added to obtain the antibacterial and self-healing concrete anti-corrosion coating.

10. The antibacterial and self-healing concrete anti-corrosion coating as described in claim 9, characterized in that, The preparation temperature of the anti-corrosion coating is controlled at 20-30℃.

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