An impact-resistant seawall repair adhesive and its preparation method

Abstract

This invention proposes an impact-resistant seawall repair adhesive and its preparation method, belonging to the field of adhesive technology. The impact-resistant seawall repair adhesive is prepared from the following raw materials in parts by weight: 70-100 parts water glass, 30-40 parts sodium fluorosilicate, 5-10 parts ammonium chloride, 10-15 parts curing agent, 30-50 parts dimethyl silicone oil, 5-7 parts metal oxide, 2-4 parts emulsifier, and 100-120 parts water. This impact-resistant seawall repair adhesive is a silicate inorganic adhesive that can withstand extremely high temperatures and large tensile and shear forces. It boasts advantages such as high bonding strength with the substrate and abundant raw material sources, good stability, and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of adhesive technology, specifically to an impact-resistant seawall repair adhesive and its preparation method. Background Technology

[0002] In recent years, underwater adhesives have attracted widespread attention due to their potential applications in biomedicine, marine vessels, seawall repair, and materials engineering. Seawalls often develop cavities due to the impact and erosion of ocean waves. Therefore, fast-curing, impact-resistant, and salt-corrosion-resistant repair adhesives are needed to repair them, preventing further erosion and maintaining their normal function.

[0003] However, the preparation of high-strength underwater adhesive materials has always been a research challenge and a hot topic in this field. Most traditional adhesives have excellent bonding strength in air, but they quickly lose their effectiveness in water. This is mainly because water molecules enter the bonding interface and form a hydration film, which hinders the contact between the adhesive and the substrate. At the same time, water molecules cause hydration, swelling, and degradation of the adhesive molecules, ultimately leading to a rapid decline or even complete loss of bonding performance. Therefore, ordinary adhesives are difficult to meet the high impact conditions of seawalls and the environment of prolonged contact with water. In addition, they do not have high-temperature resistance.

[0004] Chinese patent CN 113667434 B discloses an adhesive based on a mercapto-epoxy reaction, its preparation method and application. The adhesive includes biomass epoxide and bismuth reagent. This adhesive can be used for underwater bonding. However, the impact resistance of this adhesive is poor and the water resistance is not durable, which cannot meet the extreme conditions of seawall bonding. Summary of the Invention

[0005] The purpose of this invention is to propose an impact-resistant seawall repair adhesive and its preparation method, which can withstand extremely high temperatures and large tensile and shear forces, has high bonding strength, and is made from abundant raw materials with good stability and is easy to operate.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0007] An impact-resistant seawall repair adhesive is prepared from the following raw materials in parts by weight: 70-100 parts water glass, 10-15 parts sodium fluorosilicate, 5-10 parts ammonium chloride, 10-15 parts curing agent, 30-50 parts dimethyl silicone oil, 5-7 parts metal oxide, 2-4 parts emulsifier I, and 100-120 parts water;

[0008] The curing agent is talc powder and composite silica particles in a mass ratio of 3-5:10-12; the composite silica particles are a mixture of fluorine-modified silica particles and polydopamine-coated modified silica particles.

[0009] Furthermore, the potassium-to-sodium ratio of the water glass is 0.5 / 1 to 0.7 / 1. The potassium-to-sodium ratio is defined in the art as the ratio of the mass of potassium oxide to sodium oxide in the water glass after conversion. The potassium-to-sodium ratio of the water glass has a significant impact on the adhesive. Sodium-based water glass cures quickly and is easy to apply, but its waterproofing performance is inferior to that of potassium-based water glass; therefore, a certain amount of potassium-based water glass is needed as a supplement.

[0010] Furthermore, the mass ratio of fluorine-modified silica particles to polydopamine-coated modified silica is 7-10:3-5; the average particle size of the polydopamine-coated modified silica particles is 25-35 μm, and the average particle size of the fluorine-modified silica particles is 5-10 μm.

[0011] As a further improvement of the present invention, the preparation method of the polydopamine-coated modified silica particles is as follows:

[0012] S1. Mix alkyl orthosilicate, ammonia, and ethanol evenly, heat and stir to react, dry, and ball mill to obtain silica particles;

[0013] S2. Add the silica particles obtained in step S1 to water, add dopamine hydrochloride and catalyst, heat and stir to react, filter, wash, and dry to obtain modified silica particles.

[0014] As a further improvement of the present invention, the mass ratio of alkyl orthosilicate, hydrochloric acid and ethanol in step S1 is 15-20:8-12:150-200, the alkyl orthosilicate is methyl orthosilicate or ethyl orthosilicate, the concentration of ammonia is 20-25 wt%, the temperature of the heating and stirring reaction is 25-35°C, and the time is 20-30 h.

[0015] As a further improvement of the present invention, the mass ratio of silica particles, dopamine hydrochloride and catalyst in step S2 is 10:15-20:0.5-1, the catalyst is a Tris-HCl solution with pH=8.5-9, and the heating and stirring reaction is carried out at a temperature of 40-45°C for 2-4 hours.

[0016] As a further improvement of the present invention, the method for preparing the fluorine-modified silica particles is as follows:

[0017] Fluorinated silane, hydrochloric acid, water, and emulsifier II were mixed evenly to obtain an aqueous phase, which was then added to the oil phase. The mixture was stirred and emulsified, centrifuged, washed, and dried to obtain fluorinated surface-modified silica particles.

[0018] As a further improvement of the present invention, the fluorinated silane is selected from at least one of 1H,1H,2H,2H-perfluorodecyltriethoxysilane, 1H,1H,2H,2H-perfluorodecyltrimethoxysilane, dodecylfluoroheptylpropyltrimethoxysilane, dodecylfluoroheptylpropylmethyldimethoxysilane, 3,3,3-trifluoropropylmethyldimethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane, or 1H,1H,2H,2H-perfluorooctyltrimethoxysilane; the oil phase is at least one of petroleum ether, silicone oil, and white oil.

[0019] As a further improvement of the present invention, the mass ratio of the fluorinated silane, hydrochloric acid, water, emulsifier II, and oil phase is 15-20:3-5:70-100:0.5-1:200-250, the concentration of the hydrochloric acid is 6-8 mol / L, the emulsifier II is an anionic surfactant, specifically selected from at least one of sodium dodecylbenzenesulfonate, sodium dodecyl sulfonate, sodium dodecyl sulfate, sodium tetradecyl sulfonate, sodium tetradecylbenzenesulfonate, sodium tetradecyl sulfide, sodium hexadecylbenzenesulfonate, sodium hexadecyl sulfonate, sodium hexadecyl sulfate, sodium octadecyl sulfonate, and sodium octadecylbenzenesulfonate, and the oil phase is at least one of petroleum ether, silicone oil, and white oil.

[0020] As a further improvement of the present invention, the metal oxide is selected from at least one of aluminum oxide, magnesium oxide, calcium oxide, zinc oxide, and iron oxide, with a particle size of 20-50 μm; the emulsifier I is an anionic surfactant, specifically selected from at least one of sodium dodecylbenzenesulfonate, sodium dodecyl sulfonate, sodium dodecyl sulfate, sodium tetradecyl sulfonate, sodium tetradecylbenzenesulfonate, sodium tetradecyl sulfide, sodium hexadecylbenzenesulfonate, sodium hexadecyl sulfonate, sodium hexadecyl sulfate, sodium octadecyl sulfonate, and sodium octadecylbenzenesulfonate.

[0021] This invention further protects a method for preparing the above-mentioned impact-resistant seawall repair adhesive, comprising the following steps:

[0022] (1) Mix all components in the curing agent evenly, and add them together with the metal oxide into 40-60 wt% dimethyl silicone oil, disperse evenly, and prepare mixture A;

[0023] (2) Mix water glass, sodium fluorosilicate, ammonium chloride, emulsifier and water evenly, add the remaining dimethyl silicone oil, emulsify, and obtain mixture B;

[0024] (3) Mix mixture A and mixture B evenly to obtain an impact-resistant seawall repair adhesive.

[0025] As a further improvement of the present invention, the emulsification conditions are 5000-7000 r / min for 15-20 min.

[0026] The present invention has the following beneficial effects:

[0027] The impact-resistant seawall repair adhesive of this invention is a silicate inorganic adhesive that can withstand extremely high temperatures and large tensile and shear forces. It forms ionic bonds with the substrate, resulting in high bonding strength. It also has the advantages of abundant raw material sources, good stability, and convenient operation.

[0028] The silicate inorganic adhesive of this invention uses water glass and sodium fluorosilicate as adhesives and adds metal oxides as fillers. The linear expansion coefficient of the fillers is basically consistent with that of the bonded materials, ensuring that excessive thermal stress will not be generated and the bond will be damaged when used at high temperatures. It has high mechanical strength, good heat resistance and water resistance.

[0029] The impact-resistant seawall repair adhesive of this invention also contains an appropriate amount of ammonium chloride. The HCl produced by its hydrolysis reacts with the NaOH product of sodium silicate hydrolysis, promoting the continued reaction of sodium silicate with water to form a silicic acid gel, which gradually becomes a fairly thick silicic acid gel with strong adhesion, resulting in an increase in the modulus of the adhesive.

[0030] The curing agent of the impact-resistant seawall repair adhesive of this invention is talc powder and composite modified silica particles. When water glass interacts with the substrate, it generates active SiO2 colloids, which bond the substrates together through -Si-O-Si- bonds. The curing agent of this invention contains composite silica particles. The capillary channels inside the silica structure can generate silanol groups in water, which dehydrate to form silicon-oxygen tetrahedra, forming a three-dimensional spatial network structure with water glass, achieving the purpose of underwater adhesion.

[0031] This invention relates to composite silica particles comprising a mixture of fluorinated surface-modified silica particles and polydopamine-coated modified silica particles. In the preparation of the fluorinated surface-modified silica particles, the fluorinated silane is initially insoluble in water but disperses into small droplets during stirring. Under the catalysis of hydrochloric acid, these droplets undergo a sol-gel reaction, forming a water-in-oil emulsion. The hydrophobic fluorinated groups spontaneously oriented towards the silica surface, thus producing fluorinated surface-modified silica particles. This not only improves the curing and mechanical properties of the binder but also significantly enhances its hydrophobic and oleophobic properties. The polydopamine-coated modified silica particles, after surface modification with polydopamine, significantly improve the adhesiveness of the cured binder. They can form ionic and hydrogen bonds in synergy with water glass, resulting in excellent adhesive and curing properties. The addition of both has a synergistic effect.

[0032] The binder of this invention also contains dimethyl silicone oil, which can effectively inhibit the release of metal oxides, thereby improving the water resistance of the adhesive. At the same time, sodium fluorosilicate has excellent hydrophobic and oleophobic properties, which improves the water resistance, oil resistance and solvent resistance of the binder. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Unless otherwise specified, all "parts" mentioned in the embodiments of the present invention refer to parts by weight.

[0035] Preparation Example 1

[0036] S1. Mix 15 parts by weight of methyl orthosilicate, 8 parts by weight of 25 wt% ammonia water and 150 parts by weight of anhydrous ethanol evenly, stir and react at room temperature (25°C) for 24 hours, dry, and ball mill to obtain silica particles.

[0037] S2. Add 10 parts by weight of the silica particles obtained in step S1 to 100 parts by weight of water, add 15 parts by weight of dopamine hydrochloride and 1 part by weight of Tris-HCl solution with pH=8.5, heat to 40°C, stir and react for 3 hours, filter, wash, dry, and sieve to obtain polydopamine-coated modified silica particles 1 with an average particle size of about 30 μm.

[0038] Preparation Example 2

[0039] S1. Mix 15 parts by weight of tetraethyl orthosilicate, 12 parts by weight of 25 wt% ammonia water and 150 parts by weight of anhydrous ethanol evenly, stir and react at room temperature (25°C) for 24 hours, dry, and ball mill to obtain silica particles.

[0040] S2. Add 10 parts by weight of the silica particles obtained in step S1 to 100 parts by weight of water, add 20 parts by weight of dopamine hydrochloride and 1 part by weight of Tris-HCl solution with pH=8.5, heat to 45°C, stir and react for 3 hours, filter, wash, dry, and sieve to obtain polydopamine-coated modified silica particles 2 with an average particle size of about 30 μm.

[0041] Preparation Example 3

[0042] S1. Mix 15 parts by weight of tetraethyl orthosilicate, 10 parts by weight of 25 wt% ammonia water and 150 parts by weight of anhydrous ethanol evenly, stir and react at room temperature (25°C) for 24 hours, dry, and ball mill to obtain silica particles.

[0043] S2. Add 10 parts by weight of the silica particles obtained in step S1 to 100 parts by weight of water, add 16 parts by weight of dopamine hydrochloride and 1 part by weight of Tris-HCl solution with pH=8.5, heat to 40°C, stir and react for 3 hours, filter, wash, dry, and sieve to obtain polydopamine-coated modified silica particles with an average particle size of about 30 μm.

[0044] Preparation Example 4

[0045] 15 parts by weight of dodecylfluoroheptylpropyltrimethoxysilane, 3 parts by weight of 6 mol / L hydrochloric acid, 70 parts by weight of water, and 0.5 parts by weight of sodium dodecylbenzenesulfonate were mixed evenly to obtain an aqueous phase. The aqueous phase was added to 200 parts by weight of petroleum ether and emulsified at 3000 r / min for 15 min. After centrifugation, washing, drying, and sieving, fluorine-modified silica particles with an average particle size of about 10 μm were obtained.

[0046] Preparation Example 5

[0047] 20 parts by weight of 1H,1H,2H,2H-perfluorodecyltriethoxysilane, 5 parts by weight of 8mol / L hydrochloric acid, 100 parts by weight of water, and 1 part by weight of sodium tetradecyl sulfonate were mixed evenly to obtain an aqueous phase. The aqueous phase was added to 250 parts by weight of white oil and emulsified at 3000 r / min for 15 min. After centrifugation, washing, drying, and sieving, fluorine-modified silica particles with an average particle size of about 10 μm were obtained.

[0048] Preparation Example 6

[0049] 17 parts by weight of 3,3,3-trifluoropropylmethyldimethoxysilane, 4 parts by weight of 7 mol / L hydrochloric acid, 85 parts by weight of water, and 0.7 parts by weight of sodium hexadecylbenzenesulfonate were mixed evenly to obtain an aqueous phase. This aqueous phase was then added to 220 parts by weight of silicone oil and emulsified at 3000 r / min for 15 min. After centrifugation, washing, drying, and sieving, fluorine-modified silica particles with an average particle size of approximately 10 μm were obtained.

[0050] Example 1

[0051] (1) The fluorine-modified silica particles 1 prepared in Preparation Example 4 and the polydopamine-coated modified silica particles 1 prepared in Preparation Example 1 were mixed evenly at a mass ratio of 7:3 to obtain composite silica particles. Talc powder and composite silica particles were mixed at a mass ratio of 3:10 as a curing agent. 10 parts of curing agent and 5 parts of iron oxide with a particle size of 20 μm were added to 15 parts of dimethyl silicone oil and dispersed evenly to obtain mixture A.

[0052] (2) Mix 70 parts water glass (potassium-sodium ratio 0.5 / 1), 10 parts sodium fluorosilicate, 5 parts ammonium chloride, 2 parts sodium octadecyl sulfonate and 100 parts water evenly, add the remaining 20 parts dimethyl silicone oil, emulsify at 5000 r / min for 15 min to obtain mixture B;

[0053] (3) Mix mixture A and mixture B evenly to obtain an impact-resistant seawall repair adhesive.

[0054] Example 2

[0055] (1) The fluorine-modified silica particles 2 prepared in Preparation Example 5 and the polydopamine-coated modified silica particles 2 prepared in Preparation Example 2 were mixed evenly at a mass ratio of 10:5 to obtain composite silica particles. Talc powder and composite silica particles were mixed at a mass ratio of 5:12 as curing agent. 15 parts of curing agent and 7 parts of calcium oxide with a particle size of 30 μm were added to 25 parts of dimethyl silicone oil and dispersed evenly to obtain mixture A.

[0056] (2) Mix 100 parts water glass (potassium-sodium ratio 0.7 / 1), 15 parts sodium fluorosilicate, 10 parts ammonium chloride, 4 parts sodium tetradecylbenzenesulfonate and 120 parts water evenly, add 25 parts dimethyl silicone oil, emulsify at 7000 r / min for 20 min to obtain mixture B;

[0057] (3) Mix mixture A and mixture B evenly to obtain an impact-resistant seawall repair adhesive.

[0058] Example 3

[0059] (1) The fluorine-modified silica particles 3 prepared in Preparation Example 6 and the polydopamine-coated modified silica particles 3 prepared in Preparation Example 3 were mixed evenly at a mass ratio of 8:4 to obtain composite silica particles. Talc powder and composite silica particles were mixed at a mass ratio of 4:11 to obtain a curing agent. 12 parts of curing agent and 6 parts of alumina with a particle size of 20 μm were added to 20 parts of dimethyl silicone oil and dispersed evenly to obtain mixture A.

[0060] (2) Mix 85 parts of water glass (potassium-sodium ratio 0.56 / 1), 12 parts of sodium fluorosilicate, 7 parts of ammonium chloride, 3 parts of sodium dodecylbenzenesulfonate and 110 parts of water evenly, add the remaining 20 parts of dimethyl silicone oil, emulsify at 6000 r / min for 17 min to obtain mixture B;

[0061] (3) Mix mixture A and mixture B evenly to obtain an impact-resistant seawall repair adhesive.

[0062] Comparative Example 1

[0063] The difference from Example 3 is that the curing agent is talc powder, and no composite silica particles are added.

[0064] Comparative Example 2

[0065] The difference from Example 3 is that the curing agent is composite silica particles, and no talc is added.

[0066] Comparative Example 3

[0067] The difference from Example 3 is that the composite silica particles were replaced with the single fluorine-modified silica particles 3 obtained in Preparation Example 6.

[0068] Comparative Example 4

[0069] The difference from Example 3 is that the composite silica particles were replaced with the single polydopamine-coated modified silica particles prepared in Preparation Example 3.

[0070] Comparative Example 5

[0071] The difference from Example 3 is that the composite silica particles are replaced with unmodified ordinary silica particles.

[0072] Test Example 1

[0073] At room temperature, the impact-resistant seawall repair adhesives prepared in the embodiments and comparative examples of this invention were applied to ceramic sheets (50mm×50mm×50m) under different media (air, seawater, tap water), with an adhesive application rate of 2mL / dm. 2 After curing under pressureless conditions for 6 hours, the specimens were placed in a test environment (no transfer was required for air-based specimens; for seawater and water-based media, the specimens were transferred to the medium) and cured for another 48 hours. Afterward, they were removed, dried, and tested using a universal testing machine at a tensile rate of 20 mm / s for their lap shear strength, i.e., adhesive strength. For water resistance, the specimens were placed in the test medium for one month, then dried and tested for adhesive strength. Five groups of specimens were tested for adhesive strength, and the average value was taken. The results are shown in Table 1.

[0074] Table 1. Bond strength under different conditions

[0075] .

[0076] As can be seen from the table above, the impact-resistant seawall repair adhesive prepared according to the embodiments of the present invention has excellent bonding strength and water resistance.

[0077] Test Example 2

[0078] The adhesives prepared in the test examples, embodiments, and comparative examples were tested for impact peel resistance according to Appendix F of the "Code for Acceptance of Construction Quality of Building Structures Strengthening Engineering" GB50550-2010. Five groups were tested, and the average value was taken. The results are shown in Table 2.

[0079] Table 2 Impact Peel Resistance of Structural Adhesives

[0080] .

[0081] As shown in the table above, the adhesive prepared using the embodiments of the present invention has good impact peel resistance and is suitable for use as an adhesive for repairing impact-resistant seawalls.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An impact-resistant sea dike repair adhesive, characterized in that, It is prepared from the following raw materials in parts by weight: 70 - 100 parts of water glass, 10 - 15 parts of sodium fluorosilicate, 5 - 10 parts of ammonium chloride, 10 - 15 parts of curing agent, 30 - 50 parts of dimethyl silicone oil, 5 - 7 parts of metal oxide, 2 - 4 parts of emulsifier I, and 100 - 120 parts of water; The curing agent is talcum powder and composite silica particles, and the mass ratio is 3 - 5:10 - 12; the composite silica particles are a mixture of fluorine - surface - modified silica particles and polydopamine - coated modified silica particles.

2. The impact-resistant seawall repair adhesive according to claim 1, wherein, The potassium - sodium ratio of the water glass is 0.5 / 1 to 0.7 / 1.

3. The impact-resistant seawall repair adhesive according to claim 1, characterized in that, The mass ratio of the fluorine - surface - modified silica particles to the polydopamine - coated modified silica is 7 - 10:3 - 5; the average particle size of the polydopamine - coated modified silica particles is 25 - 35μm, and the average particle size of the fluorine - surface - modified silica particles is 5 - 10μm.

4. The impact-resistant seawall repair adhesive according to claim 1, wherein The preparation method of the polydopamine - coated modified silica particles is as follows: S1. Mix tetraalkyl orthosilicate, hydrochloric acid, and ethanol evenly, heat and stir for reaction, dry, and ball - mill to obtain silica particles; S2. Add the silica particles obtained in step S1 into water, add dopamine hydrochloride and a catalyst, heat and stir for reaction, filter, wash, and dry to obtain modified silica particles.

5. The impact-resistant seawall repair adhesive according to claim 4, characterized in that In step S1, the mass ratio of the tetraalkyl orthosilicate, hydrochloric acid, and ethanol is 15 - 20:8 - 12:150 - 200, the tetraalkyl orthosilicate is methyl orthosilicate or ethyl orthosilicate, the temperature of the heat - stirring reaction is 25 - 35°C, and the time is 20 - 30h; and / or In step S2, the mass ratio of the silica particles, dopamine hydrochloride, and the catalyst is 10:15 - 20:0.5 - 1, the catalyst is a Tris - HCl solution with pH = 8.5 - 9, the temperature of the heat - stirring reaction is 40 - 45°C, and the time is 2 - 4h.

6. The impact-resistant seawall repair adhesive according to claim 1, characterized in that, The preparation method of the fluorine - surface - modified silica particles is as follows: Mix a fluorosilane, hydrochloric acid, water, and emulsifier II evenly to obtain an aqueous phase, add it to an oil phase, stir for emulsification, centrifuge, wash, and dry to obtain fluorine - surface - modified silica particles.

7. The impact-resistant seawall repair adhesive according to claim 6, characterized in that, The fluorosilane is selected from at least one of 1H,1H,2H,2H - perfluorodecyltriethoxysilane, 1H,1H,2H,2H - perfluorodecyltrimethoxysilane, dodecafluorheptylpropyltrimethoxysilane, dodecafluorheptylpropylmethyldimethoxysilane, 3,3,3 - trifluoropropylmethyldimethoxysilane, 3,3,3 - trifluoropropyltrimethoxysilane, 1H,1H,2H,2H - perfluorooctyltriethoxysilane, or 1H,1H,2H,2H - perfluorooctyltrimethoxysilane; the oil phase is at least one of petroleum ether, silicone oil, and white oil.

8. The impact-resistant seawall repair adhesive according to claim 6, characterized in that, The mass ratio of the fluorosilane, hydrochloric acid, water, emulsifier II, and oil phase is 15 - 20:3 - 5:70 - 100:0.5 - 1:200 - 250, the concentration of the hydrochloric acid is 6 - 8mol / L, the emulsifier II is an anionic surfactant; the oil phase is at least one of petroleum ether, silicone oil, and white oil.

9. The impact-resistant seawall repair adhesive material according to claim 1, characterized in that, The metal oxide is selected from at least one of aluminum oxide, magnesium oxide, calcium oxide, zinc oxide, and iron oxide, and has a particle size of 20-50 microns; the emulsifier I is an anionic surfactant.

10. The preparation method of the impact-resistant seawall repair adhesive described in any one of claims 1-9, characterized in that, It includes the following steps: (1) Mix the components in the curing agent evenly, add them together with the metal oxide into 40-60 wt% of dimethyl silicone oil, and disperse evenly to obtain mixture A; (2) Mix water glass, sodium fluorosilicate, ammonium chloride, emulsifier and water evenly, add the remaining dimethyl silicone oil, and emulsify to obtain mixture B; (3) Mix mixture A and mixture B evenly to obtain an impact-resistant seawall repair adhesive.