Anti-corrosion heat-insulation coating with super-strong impact resistance and preparation method of anti-corrosion heat-insulation coating

Abstract

The invention relates to the technical field of composite materials, and particularly discloses an anti-corrosion thermal insulation coating with super-strong impact resistance and a preparation method thereof. The coating is prepared from the following raw materials: polymer resin, a curing agent, an impact-resistant reinforcing agent, a heat-insulating filler, an anti-corrosion additive and a water repellent agent. The preparation method comprises the following steps: S1, preparing raw materials: weighing the polymer resin, the curing agent, the impact-resistant reinforcing agent, the heat-insulating filler, the anti-corrosion additive and the hydrophobic agent in parts by weight; s2, pretreating an impact-resistant reinforcing agent; s3, mixing the component A; s4, mixing the component B; s5, carrying out low-temperature reaction; and S6, curing treatment. The anticorrosive thermal insulation coating can be used for military engineering, chemical engineering protection, pipeline corrosion prevention, ocean corrosion prevention, tunnel waterproofing, dam maintenance, bridge protection, foundation reinforcement, roof planting, prop manufacturing, shipbuilding, nuclear industry and radar equipment, and has the advantages of super-strong impact resistance, efficient corrosion resistance and collaborative optimization of lasting thermal insulation.

Description

Technical Field

[0001] This application relates to the field of composite materials technology, and more specifically, to an anti-corrosion and thermal insulation coating with superior impact resistance and its preparation method. Background Technology

[0002] The application of anti-corrosion and thermal insulation coatings in the field of composite materials focuses on providing integrated protection for substrates such as carbon fiber composites, glass fiber reinforced plastics, and resin-based composites. By integrating anti-corrosion and thermal insulation functions, they are widely applicable to scenarios such as aerospace, new energy, chemical industry, construction, and rail transportation. They can be used for long-term anti-corrosion and thermal insulation protection of substrate surfaces, as well as for precise protection of weak parts such as composite material joints and interfaces. The construction methods are compatible with spraying, brushing, and dipping, and are suitable for complex morphologies and processing techniques of composite materials. Their advantages are reflected in functional integration, eliminating the need to lay anti-corrosion and thermal insulation layers separately, simplifying the construction process and reducing overall costs. They also have high compatibility with composite materials, with the coating formulation specifically optimized to avoid chemical reactions with the substrate, and the film formation does not affect the original lightweight and high-strength characteristics of the composite material.

[0003] Related anti-corrosion and thermal insulation coatings form a three-dimensional network through cross-linking of polymer resin and curing agent to enhance mechanical strength. However, in existing technologies, it is often necessary to lay the anti-corrosion layer and the thermal insulation layer separately, which leads to a complicated construction process and high overall cost. In addition, the coating has insufficient compatibility with the composite material substrate, which can easily cause chemical reactions or affect the lightweight characteristics, making it difficult to meet the requirements of integrated protection and long-term performance in complex application scenarios. Summary of the Invention

[0004] To address the problem that some anti-corrosion and thermal insulation coatings rely on cross-linking polymer resins and curing agents to form a three-dimensional network to enhance mechanical strength, which makes it difficult to meet the requirements of integrated protection and long-term performance in complex application scenarios, this application provides an anti-corrosion and thermal insulation coating with superior impact resistance and its preparation method.

[0005] Firstly, this application provides an anti-corrosion and thermal insulation coating with superior impact resistance, employing the following technical solution: A corrosion-resistant and heat-insulating coating with super impact resistance is made from the following raw materials in parts by weight: 30-50 parts polymer resin, 10-20 parts curing agent, 20-40 parts impact-resistant reinforcing agent, 10-30 parts heat-insulating filler, 5-15 parts corrosion-resistant additive and 3-10 parts hydrophobic agent.

[0006] By adopting the above technical solution, the polymer resin, as the coating matrix material, provides basic adhesion and film-forming properties. The curing agent undergoes a cross-linking reaction with the resin to form a three-dimensional network structure, which enhances the mechanical strength of the coating film. The impact-resistant reinforcing agent is dispersed in the matrix to absorb impact energy. The thermal insulation filler uses a porous structure to reduce heat conduction. The corrosion-resistant additive inhibits corrosion through passivation or barrier effects. The hydrophobic agent reduces surface energy and improves water resistance. These components work synergistically in a specific ratio, enabling the coating to simultaneously possess impact resistance, corrosion resistance, and thermal insulation effects.

[0007] Preferably, the polymer resin is epoxy resin or polyurethane resin; the impact-resistant reinforcing agent is nano-silica or carbon fiber; and the thermal insulation filler is aerogel or expanded perlite.

[0008] By adopting the above technical solution, epoxy resin or polyurethane resin is selected as the polymer resin. Epoxy resin has high adhesion and chemical resistance, while polyurethane resin has flexibility and wear resistance, which can improve the matrix performance according to application requirements. The impact reinforcement is selected as nano-silica or carbon fiber. Nano-silica enhances the density of the matrix through the nano-size effect, while carbon fiber disperses stress through the fiber reinforcement mechanism. The thermal insulation filler is selected as aerogel or expanded perlite. Aerogel has low thermal conductivity, while expanded perlite is lightweight and porous and can insulate heat, thus further improving the overall performance of the coating.

[0009] Preferably, the curing agent is at least one of polyamide curing agents, modified amine curing agents, isocyanate curing agents, or polyisocyanate curing agents.

[0010] By adopting the above technical solution, the polyamide curing agent provides a flexible cross-linking network, the modified amine curing agent adapts to low-temperature curing conditions, and the isocyanate curing agent reacts efficiently with the polyurethane resin, ensuring that the curing process is controllable and the coating structure is stable, thus obtaining a coating with uniform curing and high durability.

[0011] Preferably, the corrosion inhibitor is at least one of zinc powder, zinc phosphate, aluminum tripolyphosphate, or modified mica iron oxide, and the hydrophobic agent is at least one of organosilicon hydrophobic agent, fluorocarbon hydrophobic agent, or wax emulsion.

[0012] By adopting the above technical solutions, in terms of anti-corrosion additives, zinc powder protects the metal substrate through sacrificial anode, while zinc phosphate forms a passivation film, and modified mica iron oxide provides a physical barrier; in terms of hydrophobic agents, organosilicon forms a low surface energy layer, while fluorocarbons have high weather resistance, and wax emulsions are used to enhance slipperiness. The above materials work synergistically to improve anti-corrosion and waterproof capabilities.

[0013] Secondly, this application provides a method for preparing an anti-corrosion and thermal insulation coating with superior impact resistance, employing the following technical solution: A method for preparing an anti-corrosion and thermal insulation coating with superior impact resistance includes the following steps: S1. Prepare raw materials: Weigh out the polymer resin, curing agent, impact enhancer, thermal insulation filler, anti-corrosion additive and hydrophobic agent according to the weight parts; S2. Pretreatment of impact-resistant reinforcing agent: The impact-resistant reinforcing agent is ground to obtain a fine powder; S3. Mixing Component A: Add the polymer resin, preservative and hydrophobic agent to the reaction vessel and mix them evenly under low speed stirring to obtain the mixture of Component A. S4. Mixing Component B: Add the curing agent, thermal insulation filler and the fine powder obtained in S2 to another container, stir and disperse at room temperature to obtain a mixture of Component B. S5. Low-temperature reaction: Slowly add the mixture of component A to the mixture of component B, and stir and react under low-temperature conditions to obtain a semi-finished coating product; S6. Curing treatment: The semi-finished coating obtained in S5 is left to stand for curing, and after filtration, the anti-corrosion and heat-insulating coating is obtained.

[0014] By adopting the above technical solution, S1 accurately weighs the raw materials to ensure precise proportions, while S2 grinds the impact-resistant reinforcing agent to obtain fine powder to enhance dispersibility. Then, S3 mixes component A under low-speed stirring to make the components uniform and avoid phase separation. After that, S4 premixes component B to prepare for the curing reaction. Then, S5 slowly mixes at low temperature to control the reaction rate and prevent explosive polymerization. Finally, S6 is cured to complete the crosslinking reaction and remove impurities. Combining the above steps, the method has high stability and can repeatedly prepare coatings with consistent performance.

[0015] Preferably, before step S1, a drying pretreatment step is included for the thermal insulation filler, with a drying temperature of 50℃~80℃ and a time of 30~60min.

[0016] By adopting the above technical solution, the thermal insulation filler is pre-treated by drying. The drying temperature is 50℃ to 80℃ to effectively remove surface moisture without damaging the filler structure, and the time is 30 to 60 minutes to ensure sufficient drying. This avoids the introduction of air bubbles or the influence of the curing reaction by moisture in subsequent mixing, thus improving the quality stability of the coating.

[0017] Preferably, in step S3, the low-speed stirring speed is 100-200 rpm and the stirring time is 20-40 min to ensure that component A is mixed evenly.

[0018] By adopting the above technical solution, the mixing speed and mixing time are controlled to balance the mixing efficiency and fluid shear force. The low speed avoids the entrainment of too much air and ensures sufficient time for the polymer resin and additives to be fully dispersed. Therefore, a uniform mixture of component A is obtained, which lays the foundation for subsequent reactions.

[0019] Preferably, in step S4, 0.5 to 2 parts of ultraviolet absorber are added during the stirring and dispersion process.

[0020] By adopting the above technical solution, an appropriate amount of ultraviolet absorber is added during the stirring and dispersion process. The ultraviolet absorber can absorb ultraviolet radiation energy and prevent the coating film from aging. The amount added is based on the effective protection requirements. It is added during stirring to ensure uniform distribution, thus enhancing the weather resistance and service life of the coating.

[0021] Preferably, in step S5, the temperature of the low-temperature reaction is 10℃~30℃, and the reaction time is 60~120min.

[0022] By adopting the above technical solution, the low-temperature reaction temperature is set to 10℃ to 30℃ and the reaction time is 60-120 minutes. This temperature range controls the reaction rate to avoid excessive curing and resulting coating defects. Sufficient reaction time ensures that the crosslinking reaction is fully carried out. Based on the operability of common curing systems, a coating semi-finished product with a uniform structure is obtained.

[0023] Preferably, in step S6, the ambient temperature for the curing treatment is 15℃~25℃, and the curing time is 24~48h.

[0024] By adopting the above technical solution, the ambient temperature and curing time of the curing treatment are controlled to promote the slow movement of molecular chains to complete the later cross-linking. The temperature is kept away from being too high, which would lead to degradation, while sufficient time can ensure the stability of the system, thus improving the final mechanical properties and durability of the coating film.

[0025] In summary, this application has the following beneficial effects: 1. This application uses polymer resin, curing agent, impact-resistant reinforcing agent, thermal insulation filler, anti-corrosion additive and hydrophobic agent to prepare anti-corrosion and thermal insulation coating. The polymer resin and curing agent crosslink to form a three-dimensional network to enhance mechanical strength, while the impact-resistant reinforcing agent disperses and absorbs energy. The thermal insulation filler blocks heat conduction through a porous structure. The anti-corrosion additive and hydrophobic agent inhibit corrosion and improve water resistance, respectively. The final coating has the functions of super impact resistance, high-efficiency anti-corrosion and long-lasting thermal insulation.

[0026] 2. In this application, epoxy resin or polyurethane resin is preferably used as the polymer resin, nano-silica or carbon fiber as the impact-resistant reinforcing agent, and aerogel or expanded perlite as the thermal insulation filler. The high adhesion of epoxy resin and the flexibility of polyurethane can adapt to different matrix requirements, while nano-silica is used to enhance the density of the matrix. The fiber mechanism of carbon fiber disperses stress, and the low thermal conductivity of aerogel and the porous structure of expanded perlite synergistically improve thermal insulation. The above materials work together in the coating to further improve the mechanical properties, impact resistance, and thermal insulation effect of the coating.

[0027] 3. The method of this application involves drying the thermal insulation filler to remove moisture, mixing component A at low speed to ensure uniform dispersion, adding ultraviolet absorbers to enhance weather resistance, controlling the reaction rate at low temperature, and curing to promote crosslinking. Drying avoids bubble defects, and uniform mixing lays the foundation for the reaction. Low temperature and curing ensure complete curing and structural stability, thus obtaining a coating product with consistent quality, reliable performance, and high durability. Attached Figure Description

[0028] Figure 1 This is a flowchart illustrating the preparation method of an anti-corrosion and thermal insulation coating with superior impact resistance proposed in this application. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1: This example provides an anti-corrosion and thermal insulation coating with super impact resistance, which is made from the following raw materials in parts by weight: 30 parts polymer resin, 10 parts curing agent, 20 parts impact resistance enhancer, 10 parts thermal insulation filler, 5 parts anti-corrosion additive and 3 parts hydrophobic agent.

[0031] Among them, the polymer resin is epoxy resin, the impact-resistant reinforcing agent is nano-silica, the thermal insulation filler is aerogel, the curing agent is polyamide curing agent, the anti-corrosion additive is zinc powder, and the hydrophobic agent is organosilicon hydrophobic agent.

[0032] The preparation method of the above-mentioned anti-corrosion and thermal insulation coating is as follows: S1: Prepare raw materials by weighing out the polymer resin, curing agent, impact enhancer, thermal insulation filler, anti-corrosion additive and hydrophobic agent according to the weight parts.

[0033] The insulation filler is pre-treated by drying at 50°C for 30 minutes.

[0034] S2: Pre-treated impact enhancer, which is ground to obtain fine powder.

[0035] S3: Mix component A. Add the polymer resin, preservative and hydrophobic agent to the reactor and mix evenly under low speed stirring to obtain component A mixture.

[0036] The low-speed stirring was performed at 100 rpm for 20 minutes.

[0037] S4: Mix component B by adding the curing agent, thermal insulation filler and fine powder obtained in S2 into another container and stirring and dispersing at room temperature to obtain a mixture of component B.

[0038] In addition, 0.5 parts of ultraviolet absorber were added during the stirring and dispersion process.

[0039] S5: Low-temperature reaction. The mixture of component A is slowly added to the mixture of component B, and the mixture is stirred and reacted under low-temperature conditions to obtain a semi-finished coating.

[0040] The low-temperature reaction was carried out at a temperature of 10℃ for 60 minutes.

[0041] S6: Curing treatment, the semi-finished coating obtained in S5 is left to stand and cure, and after filtration, the anti-corrosion and heat-insulating coating is obtained.

[0042] The curing process was carried out at an ambient temperature of 15℃ for 24 hours.

[0043] Example 2: This example provides an anti-corrosion and thermal insulation coating with super impact resistance, which is made from the following raw materials in parts by weight: 40 parts polymer resin, 15 parts curing agent, 30 parts impact resistance enhancer, 20 parts thermal insulation filler, 10 parts anti-corrosion additive and 6.5 parts hydrophobic agent.

[0044] Among them, the polymer resin is polyurethane resin, the impact-resistant reinforcing agent is carbon fiber, the thermal insulation filler is expanded perlite, the curing agent is modified amine curing agent, the anti-corrosion additive is zinc phosphate, and the hydrophobic agent is fluorocarbon hydrophobic agent.

[0045] The preparation method of the above-mentioned anti-corrosion and thermal insulation coating is as follows: S1: Prepare raw materials by weighing out the polymer resin, curing agent, impact enhancer, thermal insulation filler, anti-corrosion additive and hydrophobic agent according to the weight parts.

[0046] The thermal insulation filler is pre-treated by drying at a temperature of 65℃ for 45 minutes.

[0047] S2: Pre-treated impact enhancer, which is ground to obtain fine powder.

[0048] S3: Mix component A. Add the polymer resin, preservative and hydrophobic agent to the reactor and mix evenly under low speed stirring to obtain component A mixture.

[0049] The low-speed stirring was performed at 150 rpm for 30 minutes.

[0050] S4: Mix component B by adding the curing agent, thermal insulation filler and fine powder obtained in S2 into another container and stirring and dispersing at room temperature to obtain a mixture of component B.

[0051] In addition, 1.25 parts of ultraviolet absorber were added during the stirring and dispersion process.

[0052] S5: Low-temperature reaction. The mixture of component A is slowly added to the mixture of component B, and the mixture is stirred and reacted under low-temperature conditions to obtain a semi-finished coating.

[0053] The low-temperature reaction was carried out at a temperature of 20°C for 90 minutes.

[0054] S6: Curing treatment, the semi-finished coating obtained in S5 is left to stand and cure, and after filtration, the anti-corrosion and heat-insulating coating is obtained.

[0055] The curing process was carried out at an ambient temperature of 20℃ for 36 hours.

[0056] Example 3: This example provides an anti-corrosion and thermal insulation coating with super impact resistance, which is made from the following raw materials in parts by weight: 50 parts polymer resin, 20 parts curing agent, 40 parts impact resistance enhancer, 30 parts thermal insulation filler, 15 parts anti-corrosion additive and 10 parts hydrophobic agent.

[0057] Among them, the polymer resin is epoxy resin, the impact-resistant reinforcing agent is carbon fiber, the thermal insulation filler is aerogel, the curing agent is isocyanate curing agent, the anti-corrosion additive is aluminum tripolyphosphate, and the hydrophobic agent is wax emulsion.

[0058] The preparation method of the above-mentioned anti-corrosion and thermal insulation coating is as follows: S1: Prepare raw materials by weighing out the polymer resin, curing agent, impact enhancer, thermal insulation filler, anti-corrosion additive and hydrophobic agent according to the weight parts.

[0059] The insulation filler is pre-treated by drying at 80℃ for 60 minutes.

[0060] S2: Pre-treated impact enhancer, which is ground to obtain fine powder.

[0061] S3: Mix component A. Add the polymer resin, preservative and hydrophobic agent to the reactor and mix evenly under low speed stirring to obtain component A mixture.

[0062] The low-speed stirring speed is 200 rpm, and the stirring time is 40 min.

[0063] S4: Mix component B by adding the curing agent, thermal insulation filler and fine powder obtained in S2 into another container and stirring and dispersing at room temperature to obtain a mixture of component B.

[0064] Two parts of ultraviolet absorber were also added, and the addition was made during the stirring and dispersion process.

[0065] S5: Low-temperature reaction. The mixture of component A is slowly added to the mixture of component B, and the mixture is stirred and reacted under low-temperature conditions to obtain a semi-finished coating.

[0066] The low-temperature reaction was carried out at a temperature of 30°C for 120 minutes.

[0067] S6: Curing treatment, the semi-finished coating obtained in S5 is left to stand and cure, and after filtration, the anti-corrosion and heat-insulating coating is obtained.

[0068] The curing process was carried out at an ambient temperature of 25℃ for 48 hours.

[0069] Comparative Example 1: This comparative example is the same as that in Example 1, except that the amount of polymer resin used is 15 parts by weight, and the rest is the same as that in Example 1.

[0070] Comparative Example 2: This comparative example is the same as that in Example 1, except that the amount of curing agent used is 5 parts by weight, and the rest is the same as that in Example 1.

[0071] Comparative Example 3: This comparative example is the same as that in Example 1, except that the amount of impact enhancer used is 10 parts by weight, and the rest is the same as that in Example 1.

[0072] Comparative Example 4: This comparative example refers to the content of Example 1, except that the amount of thermal insulation filler used is 5 parts by weight, and the rest of the content is the same as Example 1.

[0073] Comparative Example 5: This comparative example is the same as that in Example 1, except that the amount of the preservative additive is 2.5 parts by weight, and the rest is the same as that in Example 1.

[0074] Comparative Example 6: This comparative example is the same as that in Example 1, except that the amount of hydrophobic agent used is 1.5 parts by weight, and the rest is the same as that in Example 1.

[0075] Performance testing Sample preparation: Weigh the raw materials described in Examples 1-3 and Comparative Examples 1-6 respectively, and prepare the anti-corrosion and heat-insulating coating samples to be tested according to their respective preparation methods; then uniformly coat the obtained coating samples onto a standard-sized substrate, cure them under standard environmental conditions for a specified time, and use them for testing various performance indicators after the coating is completely cured.

[0076] Impact resistance test: During the test, a standard steel plate coated with the sample to be tested is placed on the base of the impact tester, and a weighted hammer of a specified weight is dropped freely from a certain height to impact the coating surface; the height or weight is gradually increased until cracks appear on the coating surface or the coating detaches from the substrate; the maximum impact energy that the coating can withstand without damage is recorded, expressed in joules; the higher the value, the better the impact resistance of the coating; Test standard: GB / T1732-1993 Test Method for Impact Resistance of Coating Film.

[0077] Corrosion resistance test: After scratching the steel plate coated with the sample to be tested with standard scratches, it is placed in a salt spray test chamber and continuously sprayed with a 5% sodium chloride solution to form a salt spray atmosphere at a constant temperature of 35℃; after continuous testing for a specified time, the sample is taken out and the peeling level of the scratch edge is observed; Test standard: GB / T1771-2007 Determination of neutral salt spray resistance of paints and varnishes.

[0078] Thermal insulation performance testing: Measurements are performed using a thermal conductivity meter. The coating sample is prepared as a homogeneous sheet of specified thickness and size, placed between the hot and cold plates of the instrument. The thermal conductivity of the coating is determined by measuring the heat flux density passing through the sample under steady-state heat flow conditions and the temperature difference between the two sides. The lower the thermal conductivity value, the stronger the coating's ability to impede heat transfer, and the better its thermal insulation effect. Test standard: GB / T10295-2008 Determination of steady-state thermal resistance and related properties of thermal insulation materials—Heat flux meter method. Adhesion test: Use a cutting tool to draw a crisscross grid pattern on the substrate coated with the sample to be tested, cutting down to the surface of the substrate; then, firmly stick the tape to the grid area and quickly peel it off, observing the coating peeling off in the grid area; according to the percentage of the coating peeling area, rate it according to the standard grade chart; the higher the grade, the stronger the coating adhesion; test standard: GB / T9286-2021 Cross-cut test for paints and varnishes.

[0079] UV aging resistance test: The cement slab coated with the sample to be tested is placed in a UV aging test chamber. Specific UV wavelength, irradiation intensity, chamber temperature, and condensation cycle are set, and an accelerated aging test is conducted for a specified time. After the test, the sample is taken out and compared with an unaged sample to observe whether the coating has defects such as loss of gloss, discoloration, chalking, cracking, or blistering. The grade is evaluated according to the standard. The smaller the change, the higher the grade, indicating better UV aging resistance.

[0080] Table 1: Comparison of Performance Test Parameters between Examples and Comparative Examples

[0081] Example Conclusion: As can be seen from Examples 1-3 and Comparative Example 1, and Table 1, appropriately increasing the amount of polymer resin can improve the overall mechanical properties, adhesion and durability of the coating. This is because polymer resin, as the main film-forming substance, provides basic bonding force and structural strength, thereby enhancing the coating's impact resistance, corrosion resistance and aging resistance.

[0082] As can be seen from Examples 1-3 and Comparative Example 2, and Table 1, appropriately increasing the amount of curing agent helps to improve the crosslinking density and structural integrity of the coating, thereby improving the corrosion resistance, adhesion and mechanical stability of the coating. This is because the curing reaction enhances the network structure and chemical resistance of the coating.

[0083] As can be seen from Examples 1-3 and Comparative Example 3, and Table 1, appropriately increasing the amount of impact-resistant agent can enhance the impact resistance and structural toughness of the coating. This is because the impact-resistant agent improves the coating's resistance to external impacts by dispersing stress and absorbing energy, thereby improving overall durability.

[0084] As can be seen from Examples 1-3 and Comparative Example 4, and Table 1, appropriately increasing the amount of thermal insulation filler can improve the thermal insulation performance of the coating, because the thermal insulation filler effectively hinders heat transfer by reducing thermal conductivity, thereby enhancing the thermal insulation effect and energy efficiency of the coating.

[0085] As can be seen from Examples 1-3 and Comparative Example 5, and Table 1, appropriately increasing the amount of anti-corrosion additive can enhance the corrosion resistance of the coating. This is because the anti-corrosion additive forms a protective barrier through chemical or electrochemical action, thereby inhibiting the erosion of corrosive media and improving the long-term protective capability of the coating.

[0086] As can be seen from Examples 1-3 and Comparative Example 6, and Table 1, appropriately increasing the amount of hydrophobic agent can improve the hydrophobicity and aging resistance of the coating. This is because the hydrophobic agent enhances the coating's resistance to environmental factors such as ultraviolet rays and moisture by reducing surface energy and moisture adsorption, thereby improving the coating's durability and appearance retention.

[0087] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A corrosion and heat insulation coating with super impact resistance, characterized in that, The raw materials include polymer resin 30-50 parts, curing agent 10-20 parts, impact-resistant reinforcing agent 20-40 parts, thermal insulation filler 10-30 parts, corrosion-resistant auxiliary agent 5-15 parts, and hydrophobic agent 3-10 parts.

2. The anticorrosive and thermal insulation coating with super impact resistance according to claim 1, characterized in that, The polymer resin is epoxy resin or polyurethane resin; the impact-resistant reinforcing agent is nano-silica or carbon fiber; and the thermal insulation filler is aerogel or expanded perlite.

3. The anticorrosive and thermal insulation coating with super impact resistance according to claim 1, characterized in that, The curing agent is at least one of polyamide curing agent, modified amine curing agent, isocyanate curing agent, or polyisocyanate curing agent.

4. The anticorrosive and thermal insulation coating with super impact resistance according to claim 1, characterized in that, The corrosion-resistant auxiliary agent is at least one of zinc powder, zinc phosphate, aluminum tripolyphosphate, or modified mica iron oxide, and the hydrophobic agent is at least one of organic silicon hydrophobic agent, fluorocarbon hydrophobic agent, or wax emulsion.

5. A method for preparing a corrosion-resistant thermal-insulation coating with super impact resistance, characterized in that, The method for preparing the corrosion-resistant and thermal-insulation coating with super-impact resistance includes the following steps: S1, preparing raw materials: weighing polymer resin, curing agent, impact-resistant reinforcing agent, thermal insulation filler, corrosion-resistant auxiliary agent, and hydrophobic agent; S2, pretreating the impact-resistant reinforcing agent: grinding the impact-resistant reinforcing agent to obtain fine powder; S3, mixing A components: adding polymer resin, corrosion-resistant auxiliary agent, and hydrophobic agent into a reaction kettle, and mixing them uniformly under low-speed stirring to obtain A component mixture; S4, mixing B components: adding curing agent, thermal insulation filler, and the fine powder obtained in S2 into another container, and stirring and dispersing them at room temperature to obtain B component mixture; S5, low-temperature reaction: slowly adding A component mixture into B component mixture, and stirring and reacting them under low-temperature condition to obtain coating semi-product; S6, aging treatment: placing the coating semi-product obtained in S5 for aging, and filtering to obtain the corrosion-resistant and thermal-insulation coating.

6. The preparation method of the anticorrosive and thermal insulation coating with super-impact resistance according to claim 5, characterized in that, Before S1, a step of drying and pretreating the thermal insulation filler is further included, the drying temperature is 50-80℃, and the time is 30-60 min.

7. The method for preparing an anti-corrosion and thermal insulation coating with superior impact resistance according to claim 5, characterized in that, In S3, the speed of low-speed stirring is 100-200 rpm, and the stirring time is 20-40 min to ensure the uniform mixing of A components.

8. The method for preparing an anti-corrosion and thermal insulation coating with superior impact resistance according to claim 5, characterized in that, In S4, 0.5-2 parts of ultraviolet absorber is further added, and the adding time is during the stirring and dispersing process.

9. The method for preparing an anti-corrosion and thermal insulation coating with superior impact resistance according to claim 5, characterized in that, In S5, the temperature of low-temperature reaction is 10-30℃, and the reaction time is 60-120 min.

10. The method for preparing an anti-corrosion and thermal insulation coating with superior impact resistance according to claim 5, characterized in that, In S6, the environmental temperature of aging treatment is 15-25℃, and the aging time is 24-48 h.

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