Preparation method of anti-icing water gel coating

Abstract

The invention discloses a preparation method of an anti-icing water gel coating, which comprises the following steps: adding a polydimethylsiloxane chain, a photoinitiator and deionized water into a P (AA-AAc-co-VA-EG) precursor solution to obtain a hydrogel elastomer precursor solution; adding an acetic acid solution into the hydrogel elastomer precursor solution to obtain a transparent solution; adjusting the pH of the transparent solution to be neutral; uniformly spin-coating the transparent solution on a substrate; placing the substrate in an ultraviolet exposure device, exposing in a nitrogen environment, and polymerizing the transparent solution to obtain hydrogel; and washing and drying to obtain the anti-icing water gel coating. According to the preparation method, a hydrophobic polydimethylsiloxane chain is implanted into a hydrophilic polyelectrolyte network, and ultraviolet light is used for promoting a cross-linking reaction and forming a coating structure, so that the overall cost is reduced, the production efficiency is also improved, and a gel coating with high ice resistance is formed; and a plurality of ice-resistant properties such as formation, propagation and adhesion of ice can be regulated and controlled.

Description

Technical Field

[0001] The invention relates to the technical field of biomaterial preparation, and more specifically to a method for preparing an anti-icing hydrogel coating. Background Art

[0002] Power equipment plays a vital role in the operation of society. Its primary task is to ensure the safety of electricity use and provide more efficient power transmission. As the power system continues to develop towards higher voltage and larger capacity, the requirements for system operation safety and reliability are also increasing, and the demand for power equipment protection is also gradually increasing. At present, in cold rainy and snowy weather in my country, ice on the surface of power equipment not only leads to a decrease in power transmission performance, but even makes it impossible to operate normally, which may cause serious accidents.

[0003] Anti-icing coating is a passive de-icing technology with simple construction, low energy consumption and good effect. Suitable coating can significantly reduce the adhesion between the ice-covered surface and the substrate, so that the ice can fall off easily under external conditions such as wind and vibration, achieving the effect of anti-icing and de-icing. The preparation of anti-icing coating in the prior art is complicated and costly.

[0004] Therefore, there is an urgent need to provide a method for preparing an anti-icing hydrogel coating that can reduce costs while improving production efficiency. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide a method for preparing an anti-icing hydrogel coating.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A method for preparing an anti-icing hydrogel coating, comprising: S1. According to the weight ratio, 6-10 parts of acrylamide, 8-10 parts of acrylic acid, 5-7 parts of ethylene glycol, 2-3 parts of aluminum oxide, 0.5-1 parts of Mxene solution, 0.5-1 parts of methacryloyloxyethyl trimethylammonium chloride, to obtain P (AA-AAc-co-VA-EG) precursor solution; S2. Adding 0.5-2 parts of polydimethylsiloxane chain, 0.2-1 parts of photoinitiator and 50-70 parts of deionized water to the P(AA-AAc-co-VA-EG) precursor solution to obtain a hydrogel elastomer precursor solution; S3. Adding acetic acid solution to the hydrogel elastomer precursor solution, adjusting the pH of the solution to neutral to obtain a transparent solution; S4. The transparent solution is evenly spin-coated on the substrate; S5. exposing the substrate to a UV exposure device in a nitrogen environment, polymerizing the transparent solution on the surface of the substrate to obtain a hydrogel; S6. Cleaning the surface of the hydrogel to remove unreacted precursor solution and other impurities; S7. After the hydrogel is dried, an anti-icing hydrogel coating is obtained.

[0007] Implementing the embodiments of the present invention will have the following beneficial effects: The embodiment of the present invention discloses a method for preparing an anti-icing hydrogel coating, comprising: adding a polydimethylsiloxane chain, a photoinitiator and deionized water to a P(AA-AAc-co-VA-EG) precursor solution to obtain a hydrogel elastomer precursor solution; adding an acetic acid solution to the hydrogel elastomer precursor solution to obtain a transparent solution; adjusting the pH of the transparent solution to be neutral; uniformly spin-coating the transparent solution on a substrate; placing the substrate in an ultraviolet exposure device for exposure in a nitrogen environment, polymerizing the transparent solution to obtain a hydrogel; washing and drying to obtain an anti-icing hydrogel coating. The present invention implants a hydrophobic polydimethylsiloxane chain into a hydrophilic polyelectrolyte network, uses ultraviolet light to promote the cross-linking reaction and form the structure of the coating, reduces the overall cost and improves the production efficiency, and forms a gel coating with high anti-icing ability, which can regulate multiple anti-icing properties such as ice formation, propagation and adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] in: Figure 1 The present invention provides a flow chart of a method for preparing an anti-icing hydrogel coating. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0011] Reference Figure 1 The present invention discloses a method for preparing an anti-icing hydrogel coating, comprising: S1. According to the weight ratio, 6-10 parts of acrylamide, 8-10 parts of acrylic acid, 5-7 parts of ethylene glycol, 2-3 parts of aluminum oxide, 0.5-1 parts of Mxene solution, 0.5-1 parts of methacryloyloxyethyl trimethylammonium chloride, to obtain P (AA-AAc-co-VA-EG) precursor solution; S2. Add 0.5-2 parts of polydimethylsiloxane chain, 0.2-1 parts of photoinitiator and 50-70 parts of deionized water to the P(AA-AAc-co-VA-EG) precursor solution to obtain a hydrogel elastomer precursor solution; S3. Adding acetic acid solution to the hydrogel elastomer precursor solution, adjusting the pH of the solution to neutral to obtain a transparent solution; S4. Spin-coating the transparent solution evenly on the substrate; S5. The substrate is placed in a UV exposure device and exposed in a nitrogen environment, and the transparent solution on the surface of the substrate is polymerized to obtain a hydrogel; S6. Cleaning the hydrogel surface to remove unreacted precursor solution and other impurities; S7. After the hydrogel is dried, an anti-icing hydrogel coating is obtained.

[0012] Specifically, S1. In a reaction container, add in sequence: 6-10 parts of acrylamide, 8-10 parts of acrylic acid, 5-7 parts of ethylene glycol, 2-3 parts of aluminum oxide, 0.5-1 part of Mxene solution, and 0.5-1 part of methacryloyloxyethyltrimethylammonium chloride (PMETAC), and stir evenly to obtain a P(AA-AAc-co-VA-EG) precursor solution.

[0013] It should be noted that P(AAm-AAc-co-VA-EG) is a polymer material with a multi-polymer structure, the main components of which are acrylamide, acrylic acid, ethylene glycol and alumina. This copolymer material can bring better toughness and environmental adaptability. The key is that it can be combined with polydimethylsiloxane chains to reduce the difficulty of de-icing, so it is used as the matrix component of the hydrogel coating. P(AAm-AAc-co-VA-EG), Mxene solution, and PMETAC are stirred by glass rod or magnetic stirring to obtain P(AA-AAc-co-VA-EG) precursor solution, and the stirring time is 30 min-50 min.

[0014] The Mxene solution is used as an additive to improve the electrical conductivity, mechanical strength and corrosion resistance of the coating; the Mxene solution is any finished product reagent sold on the market.

[0015] PMETAC, as an additive, enhances the antibacterial and wear resistance of the hydrogel coating, improves the antistatic properties of the coating, enhances the adhesion of the coating, improves the leveling of the coating, and improves the surface smoothness and aesthetics of the coating.

[0016] S2. Add 0.5-2 parts of polydimethylsiloxane chain (PDMS), 0.2-1 parts of photoinitiator and 50-70 parts of deionized water to the P(AA-AAc-co-VA-EG) precursor solution. In this step, the solutes are mixed and stirred to obtain a hydrogel elastomer precursor solution.

[0017] It should be noted that PDMS, as the main cross-linking agent, forms a coupling with PMETAC after grafting, thereby improving the mechanical performance of the hydrogel coating and increasing its service life. Optionally, the polydimethylsiloxane chain is polydimethylsiloxane monomethacrylate (PDMS-MA).

[0018] The addition of the photoinitiator can make the coating cure quickly and make the coating have good mechanical strength, durability and excellent transparency. Optionally, the photoinitiator is Irgacure 184 photoinitiator.

[0019] S3. Slowly add acetic acid solution to the hydrogel elastomer precursor solution while stirring thoroughly. Use a pH meter to monitor the pH value of the solution and adjust the pH of the solution to neutral. The components in the hydrogel elastomer precursor solution are uniformly dissolved to form a transparent solution.

[0020] It should be noted that the pH of the hydrogel elastomer precursor solution is adjusted to 6-7 by adding an acidic solution and / or an alkaline solution; the acidic solution includes an acetic acid solution, and the alkaline solution is a sodium hydroxide solution.

[0021] Furthermore, the prepared transparent solution was transferred to a glass bottle in a dark place and sealed and stored at 4° C. for 2 hours to ensure that the polydimethylsiloxane chains in the solution were more evenly dispersed to ensure the stability and long-term usability of the solution.

[0022] S4. Spin-coat the transparent solution onto the pre-cleaned and dried substrate using a spin coater to obtain a uniform coating with appropriate thickness.

[0023] It should be noted that the spin coating is performed at a rotation speed of 2000rpm-3000pm and the spin coating time is 30s-50s to obtain a substrate uniformly coated with the solution. Optionally, the substrate is one or more of metal, ceramic, glass, fiber, and plastic.

[0024] S5. The substrate is placed in a UV exposure device and exposed in a nitrogen environment, and the transparent solution on the surface of the substrate is polymerized to obtain a hydrogel.

[0025] Optionally, the substrate with the uniformly coated solution is placed in a nitrogen environment and exposed to light at an intensity of 100 mW / cm² for 5 minutes. The ultraviolet light promotes the cross-linking reaction and the formation of the coating structure, and the nitrogen atmosphere ensures the full formation of the hydrogel.

[0026] Furthermore, scanning electron microscopy was used to observe the surface morphology of the hydrogel, and Raman spectroscopy was performed to determine its chemical structure and degree of cross-linking.

[0027] S6. Wash the hydrogel surface with deionized water and / or alcohol to remove unreacted precursor solution and other impurities.

[0028] Exemplarily, the hydrogel is washed twice, first with deionized water for 2-5 minutes, and then with absolute alcohol for 2-5 minutes, to remove unreacted precursors and other impurities to the greatest extent possible.

[0029] S7. The anti-icing hydrogel coating was obtained after the hydrogel was dried at room temperature.

[0030] Furthermore, roughness measurement and contact angle measurement were performed to detect the anti-icing performance of the anti-icing hydrogel coating.

[0031] It can be understood that the method for preparing the anti-icing hydrogel coating disclosed in this embodiment includes: mixing and dissolving P(AA-AAc-co-VA-EG) composed of acrylamide, acrylic acid, ethylene glycol and alumina, Mxene solution, methacryloyloxyethyl trimethylammonium chloride, polydimethylsiloxane chain and photoinitiator. The solution is spin-coated onto a substrate and exposed to ultraviolet light to promote the cross-linking reaction and form the structure of the coating. The ultraviolet light initiates polymerization, which reduces the overall cost while improving the production efficiency. After cleaning and drying, the anti-icing hydrogel coating is obtained. By implanting hydrophobic polydimethylsiloxane chains into a hydrophilic polyelectrolyte network, a polydimethylsiloxane grafted polyelectrolyte hydrogel is prepared by in-situ polymerization, the mechanical strength and anti-icing performance of the coating are enhanced, and a highly capable anti-icing gel coating is formed, which can regulate multiple anti-icing properties such as ice formation, propagation and adhesion.

[0032] Example: Example 1 (1) In a reaction container, add the following components in order by weight: 10 parts of acrylamide, 9 parts of acrylic acid, 7 parts of ethylene glycol, 2 parts of alumina, 0.5 parts of Mxene, and 0.5 parts of PMETAC, and stir evenly to obtain a P(AA-AAc-co-VA-EG) precursor solution.

[0033] (2) Add the P(AA-AAc-co-VA-EG) precursor solution, 1.5 parts of polydimethylsiloxane monomethacrylate and 0.3 parts of Irgacure 184 photoinitiator into 70 parts of deionized water and stir. In this step, the solutes are mixed to obtain a hydrogel elastomer precursor solution; (3) Slowly add acetic acid solution dropwise while stirring thoroughly, monitor the pH value of the solution using a pH meter, and add an appropriate amount of acetic acid or alkaline solution dropwise to adjust the pH value when necessary until the desired pH value range is reached and all components are evenly dissolved to form a transparent solution; (4) Transfer the prepared transparent solution to a glass bottle in a dark place and store it in a sealed container in a refrigerator at 4°C for 2 hours to ensure that the polydimethylsiloxane chains in the solution are more evenly dispersed.

[0034] (5) Pour an appropriate amount of the precursor solution onto a pre-cleaned and dried ceramic substrate, and spin coat it at a speed of 3000 rpm for 50 seconds to obtain a substrate evenly coated with the solution; (6) Placing the substrate uniformly coated with the solution in a nitrogen environment and exposing it to light at an intensity of 100 mW / cm² for 5 minutes to polymerize the solution on the surface of the substrate into a hydrogel; (7) The hydrogel surface was washed twice, first with deionized water for 5 minutes and then with absolute alcohol for 3 minutes to remove unreacted precursors and other impurities to the greatest extent possible; (8) drying the substrate with the hydrogel coating at room temperature to obtain a hydrogel coating with anti-icing capability; The ice adhesion strength of the anti-icing hydrogel coating in Example 1 is 26.7 kPa.

[0035] Example 2 (1) In a reaction container, add the following components in order by weight: 10 parts of acrylamide, 8 parts of acrylic acid, 5 parts of ethylene glycol, 2.5 parts of alumina, 0.5 parts of Mxene, and 0.5 parts of PMETAC, and stir evenly to obtain a P(AA-AAc-co-VA-EG) precursor solution.

[0036] (2) Add the P(AA-AAc-co-VA-EG) precursor solution, 0.5 parts of polydimethylsiloxane monomethacrylate and 0.3 parts of Irgacure 184 photoinitiator into 50 parts of deionized water and stir. In this step, the solutes are mixed to obtain a hydrogel elastomer precursor solution; (3) Slowly add acetic acid solution dropwise while stirring thoroughly, monitor the pH value of the solution using a pH meter, and add an appropriate amount of acetic acid or alkaline solution dropwise to adjust the pH value when necessary until the desired pH value range is reached and all components are evenly dissolved to form a transparent solution; (4) Transfer the prepared transparent solution to a glass bottle in a dark place and store it in a sealed container in a refrigerator at 4°C for 2 hours to ensure that the polydimethylsiloxane chains in the solution are more evenly dispersed.

[0037] (5) Pour an appropriate amount of the transparent solution onto a pre-cleaned and dried stainless steel substrate, and spin coat the substrate at a speed of 2000 rpm for 30 seconds to obtain a substrate evenly coated with the solution; (6) Placing the substrate uniformly coated with the solution in a nitrogen environment and exposing it to light at an intensity of 100 mW / cm² for 5 minutes to polymerize the solution on the surface of the substrate into a hydrogel; (7) The hydrogel surface was washed twice, first with deionized water for 3 minutes and then with absolute alcohol for 2 minutes to remove unreacted precursors and other impurities to the greatest extent possible; (8) drying the substrate with the hydrogel coating at room temperature to obtain a hydrogel coating with anti-icing capability; The ice adhesion strength of the anti-icing hydrogel coating in Example 2 is 27.2 kPa.

[0038] Example 3 (1) In a reaction container, add the following components in order by weight: 10 parts of acrylamide, 9 parts of acrylic acid, 7 parts of ethylene glycol, 3 parts of alumina, 0.5 parts of Mxene, and 0.5 parts of PMETAC, and stir evenly to obtain a P(AA-AAc-co-VA-EG) precursor solution.

[0039] (2) Add 4 parts of P(AA-AAc-co-VA-EG) precursor solution, 1 part of polydimethylsiloxane monomethacrylate and 0.3 parts of Irgacure 184 photoinitiator into 70 parts of deionized water and stir. In this step, the solutes are mixed to obtain a hydrogel elastomer precursor solution; (3) Slowly add acetic acid solution dropwise while stirring thoroughly, monitor the pH value of the solution using a pH meter, and add an appropriate amount of acetic acid or alkaline solution dropwise to adjust the pH value when necessary until the desired pH value range is reached and all components are evenly dissolved to form a transparent solution; (4) Transfer the prepared transparent solution to a glass bottle in a dark place and store it in a sealed container in a refrigerator at 4°C for 2 hours to ensure that the polydimethylsiloxane chains in the solution are more evenly dispersed.

[0040] (5) pouring an appropriate amount of the transparent solution onto a pre-cleaned and dried plastic substrate, and spin coating at a speed of 2500 rpm for 30 seconds to obtain a substrate evenly coated with the solution; (6) Placing the substrate uniformly coated with the solution in a nitrogen environment and exposing it to light at an intensity of 100 mW / cm² for 5 minutes to polymerize the solution on the surface of the substrate into a hydrogel; (7) The hydrogel surface was washed twice, first with deionized water for 2 minutes and then with absolute alcohol for 3 minutes to remove unreacted precursors and other impurities to the greatest extent possible; (8) drying the substrate with the hydrogel coating at room temperature to obtain a hydrogel coating with anti-icing capability; The ice adhesion strength of the anti-icing hydrogel coating in Example 3 is 22.3 kPa.

[0041] Example 4 (1) In a reaction container, add the following components in order by weight: 7 parts of acrylamide, 10 parts of acrylic acid, 7 parts of ethylene glycol, 2 parts of alumina, 0.5 parts of Mxene, and 0.5 parts of PMETAC, and stir evenly to obtain a P(AA-AAc-co-VA-EG) precursor solution.

[0042] (2) Add 2.5 parts of P(AA-AAc-co-VA-EG) precursor solution, 1.2 parts of polydimethylsiloxane monomethacrylate and 0.3 parts of Irgacure 184 photoinitiator into 70 parts of deionized water and stir. In this step, the solutes are mixed to obtain a hydrogel elastomer precursor solution; (3) Slowly add acetic acid solution dropwise while stirring thoroughly, monitor the pH value of the solution using a pH meter, and add an appropriate amount of acetic acid or alkaline solution dropwise to adjust the pH value when necessary until the desired pH value range is reached and all components are evenly dissolved to form a transparent solution; (4) Transfer the prepared transparent solution to a glass bottle in a dark place and store it in a sealed container in a refrigerator at 4°C for 2 hours to ensure that the polydimethylsiloxane chains in the solution are more evenly dispersed.

[0043] (5) pouring an appropriate amount of the transparent solution onto a pre-cleaned and dried glass substrate, and spin coating at a speed of 3000 rpm for 50 seconds to obtain a substrate evenly coated with the solution; (6) Placing the substrate uniformly coated with the solution in a nitrogen environment and exposing it to light at an intensity of 100 mW / cm² for 5 minutes to polymerize the solution on the surface of the substrate into a hydrogel; (7) The hydrogel surface was washed twice, first with deionized water for 5 minutes and then with absolute alcohol for 5 minutes to remove unreacted precursors and other impurities to the greatest extent possible; (8) drying the substrate with the hydrogel coating at room temperature to obtain a hydrogel coating with anti-icing capability; The ice adhesion strength of the anti-icing hydrogel coating in Example 4 is 26.5 kPa.

[0044] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that no polydimethylsiloxane chain is added. The ice adhesion strength of the hydrogel coating in Comparative Example 1 is 175.6 kPa.

[0045] Comparative Example 2 The difference between Comparative Example 2 and Example 2 is that no polydimethylsiloxane chain is added and no ultraviolet exposure is used. The ice adhesion strength of the hydrogel coating in Comparative Example 2 is 182.6 kPa.

[0046] Comparative Example 3 The difference between Comparative Example 3 and Example 3 is that no polydimethylsiloxane chain is added. The ice adhesion strength of the hydrogel coating in Comparative Example 3 is 153.8 kPa.

[0047] Comparative Example 4 The difference between Comparative Example 4 and Example 4 is that no polydimethylsiloxane chain is added and no ultraviolet exposure is used. The ice adhesion strength of the hydrogel coating in Comparative Example 4 is 176.1 kPa.

[0048] In Examples 1-4 and Comparative Examples 1-4, the specific operation of the ice adhesion strength of the hydrogel coating is as follows: a 1 cm × 1 cm × 4 cm ice column is placed on the coating, placed in a refrigerator at a temperature of -15°C, and after freezing for 4 hours, the maximum deicing thrust is obtained by a dynamometer test, which is obtained by the following formula: τ=F / A The ice adhesion strength is calculated. Where τ is the ice adhesion strength, F is the maximum thrust, and A is the contact area.

[0049] Table 1: Ice adhesion strength of different hydrogel coatings

[0050] The above data show that the ice adhesion strength of the hydrogel coating after grafting polydimethylsiloxane chains and UV exposure is significantly reduced, and the anti-icing performance is very outstanding.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for preparing an anti-icing hydrogel coating, characterized in that: include: S1. According to the weight ratio, 6-10 parts of acrylamide, 8-10 parts of acrylic acid, 5-7 parts of ethylene glycol, 2-3 parts of aluminum oxide, 0.5-1 parts of Mxene solution, 0.5-1 parts of methacryloyloxyethyl trimethylammonium chloride, to obtain P (AA-AAc-co-VA-EG) precursor solution; S2. Add 0.5-2 parts of polydimethylsiloxane chain, 0.2-1 parts of photoinitiator and 50-70 parts of deionized water to the P(AA-AAc-co-VA-EG) precursor solution to obtain a hydrogel elastomer precursor solution; S3. Adding acetic acid solution to the hydrogel elastomer precursor solution, adjusting the pH of the solution to neutral to obtain a transparent solution; S4. Spin-coating the transparent solution evenly on the substrate; S5. placing the substrate in a UV exposure device and exposing it in a nitrogen environment, so that the transparent solution on the surface of the substrate is polymerized to obtain a hydrogel; S6. Cleaning the surface of the hydrogel to remove unreacted precursor solution and other impurities; S7. After the hydrogel is dried, an anti-icing hydrogel coating is obtained.

2. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: The polydimethylsiloxane chain is polydimethylsiloxane monomethacrylate.

3. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: The photoinitiator is Irgacure 184 photoinitiator.

4. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: The substrate is one or more of metal, ceramic, glass, fiber and plastic.

5. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: In step S1, the P(AA-AAc-co-VA-EG) precursor solution is stirred uniformly by glass rod stirring or magnetic stirring, and the stirring time is 30 min-50 min.

6. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: In step S3, an acidic solution and / or an alkaline solution is added to adjust the pH of the hydrogel elastomer precursor solution to 6-7; the acidic solution includes an acetic acid solution, and the alkaline solution is a sodium hydroxide solution.

7. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: In step S4, a spin coater is used to spin-coat the transparent solution onto the pre-cleaned and dried substrate.

8. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: After the hydrogel is obtained in step S5, a scanning electron microscope is used to observe the surface morphology of the hydrogel, and Raman spectroscopy is performed to determine the chemical structure and cross-linking degree of the hydrogel.

9. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: In step S6, deionized water and / or alcohol are used to clean the surface of the hydrogel.

10. The method for preparing the anti-icing hydrogel coating according to claim 1, characterized in that: In step S7, the surface roughness and contact angle of the anti-icing hydrogel coating are measured to detect the anti-icing performance of the anti-icing hydrogel coating.

Images