A method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap

Abstract

A method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap is disclosed, belonging to the field of anti-icing coating preparation. The purpose of this invention is to solve the problems of low thermal efficiency, high energy consumption, and complex preparation techniques of traditional anti-icing coatings. The method includes: 1. Preparing titanium-doped cubic boron phosphide; 2. Preparing a photothermal and electrothermal anti-icing and de-icing coating solution; 3. Preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap. The titanium-doped cubic boron phosphide added in this invention can narrow the bandgap, enabling the absorption of lower-energy photons and resulting in high photothermal conversion efficiency. It also works synergistically with graphene to improve stability and optimize photothermal response. Polydimethylsiloxane and tetramethyldisiloxane can form micro / nano multilayer structures on the surface of conductive carbon black and graphene, improving air capture capacity and thus enhancing the hydrophobicity of the coating. The formation of urethane and amide bonds between dimethyl biphenyl diisocyanate and carboxymethyl cellulose helps improve the wear resistance of the coating.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of anti-icing coating preparation, and particularly relates to a preparation method of a band gap adjustable photo-thermal-electric anti-icing and deicing coating. BACKGROUND

[0002] During the operation of electrical equipment, once covered with ice, a series of mechanical failures will inevitably be caused, and in severe cases, large-scale power outages may even occur. With the increasing expansion of power grid construction, more and more electrical equipment is deployed in harsh environments such as high mountains and gorges. The icing of electrical equipment has become a problem that cannot be ignored. However, traditional deicing methods, including mechanical deicing methods, generally have low efficiency, heating methods have significant energy consumption, and chemical treatment methods have the risk of causing secondary pollution to the environment. Therefore, an effective and energy-saving material should be developed to solve the icing problem. In recent years, researchers have been committed to the design and preparation of bio-inspired functional surfaces for passive anti-icing applications, such as superhydrophobic surfaces (SHSs), liquid-infused porous surfaces (SLIIPs), electrolyte brushes, low elastic modulus surfaces, and low interfacial toughness surfaces. Among them, SHSs and SLIIPs have become research hotspots due to their excellent performance. SHSs can serve as effective anti-icing / deicing materials due to their micro-nano scale air pocket trapping ability. These air pockets can significantly reduce the actual contact area of water droplets with the surface and the heat transfer rate, thereby promoting the rapid removal of water droplets and reducing ice adhesion. However, in environments with high humidity and extreme freezing conditions, it is difficult to ensure the long-term effective anti-icing / deicing performance.

[0003] Therefore, combining passive anti-icing materials with active photo-thermal-electric deicing materials is considered a practical method. This new method combines the advantages of passive anti-icing materials and active deicing materials, and under solar irradiation, it can achieve ice melting through photo-thermal effect, while in rainy or night conditions, a stable water film can be formed on the surface of the coating through an external electric field force, which can easily be removed under the action of gravity or slight natural wind, thereby achieving the anti-icing / deicing performance of electrical equipment. However, current research shows that the implementation of multifunctional materials usually relies on complex preparation techniques, and there are problems of high energy consumption and low thermal efficiency, which limit their practical application. Therefore, it is crucial to develop anti-icing / deicing coatings with high photo-thermal conversion efficiency and superhydrophobicity.

[0004] The present application is aimed at the problems of low thermal efficiency, high energy consumption, and complex preparation techniques of current anti-icing materials, and combines active and passive anti-icing / deicing strategies to construct a photo-thermal-electric anti-icing / deicing coating with adjustable band gap and micro-nano multi-layer structure. SUMMARY

[0005] The application aims to solve the problems of low thermal efficiency, high energy consumption and complex preparation technology of traditional anti-icing coating, and provides a preparation method of band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating.

[0006] A preparation method of band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating, specifically completed by the following steps:

[0007] I. Preparation of titanium-doped cubic boron phosphide:

[0008] ①, start the chemical vapor deposition system, and then vacuumize to a vacuum degree of 1×10 -3 Pa or below, introduce hydrogen as a carrier gas into the chemical vapor deposition system, control the temperature of the reaction cavity to be 900-1100 DEG C, then introduce phosphine and boron tribromide, and deposit for a period of time to obtain cubic boron phosphide;

[0009] ②, heat to 1200-1250 DEG C, mix TiCl4 with the cubic boron phosphide uniformly, and react at 1200-1250 DEG C for a period of time, after the reaction is completed, stop introducing hydrogen, and naturally cool to room temperature to obtain cubic boron phosphide-titanium;

[0010] ③, transfer the cubic boron phosphide-titanium to an annealing furnace, keep at 700-800 DEG C for a period of time, and then cool to room temperature to obtain titanium-doped cubic boron phosphide;

[0011] II. Preparation of photo-thermal-electric-thermal anti-icing and deicing coating solution:

[0012] ①, dissolve the conductive carbon black and graphene in distilled water, and ultrasonically for a period of time to obtain a coating water slurry;

[0013] ②, heat the coating water slurry in a water bath for a period of time, then add titanium-doped cubic boron phosphide, stir and react for a period of time, add polydimethylsiloxane, magnetically stir and react for a period of time, add tetramethyldisiloxane, magnetically stir and react for a period of time, then add carboxymethyl cellulose aqueous solution, magnetically stir for a period of time, finally add dimethyl diphenyl diisocyanate, magnetically stir for a period of time to obtain a photo-thermal-electric-thermal anti-icing and deicing coating solution;

[0014] III. Preparation of band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating:

[0015] Use a coating machine to coat the photo-thermal-electric-thermal anti-icing and deicing coating solution on an aluminum substrate, and then put it into an oven to dry for a period of time to obtain a band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating on the aluminum substrate.

[0016] The main principle of the application:

[0017] The titanium-doped cubic boron phosphide added in the application can narrow the band gap, can absorb lower energy photons, has high photo-thermal conversion efficiency, and can improve the electro-thermal effect by doping titanium; synergistic effect with graphene is used to improve stability and optimize photo-thermal response; the urethane bond and amide bond generated by adding dimethyl diphenyl diisocyanate and carboxymethyl cellulose can help improve the wear resistance of the coating; polydimethylsiloxane and tetramethyldisiloxane can form a micro-nano multi-layer structure on the surface of conductive carbon black and graphene, which can increase the surface roughness; thereby providing excellent hydrophobicity, the coating with photo-thermal electro-thermal effect can make full use of solar energy and electric energy to heat and deice, thereby enhancing the anti-icing / deicing efficiency of the coating.

[0018] The beneficial effects of the application are as follows:

[0019] 1、The titanium-doped cubic boron phosphide added in the application can narrow the band gap, can absorb lower energy photons, has high photo-thermal conversion efficiency, and can improve the electro-thermal effect by doping titanium; synergistic effect with graphene is used to improve stability and optimize photo-thermal response;

[0020] 2、Polydimethylsiloxane and tetramethyldisiloxane can form a micro-nano multi-layer structure on the surface of conductive carbon black and graphene, which can increase the surface roughness and improve the air capture ability, thereby improving the hydrophobicity of the coating;

[0021] 3、The urethane bond and amide bond generated by dimethyl diphenyl diisocyanate and carboxymethyl cellulose can help improve the wear resistance of the coating and the ability to adapt to the environment;

[0022] 4、In view of the problems of high energy consumption and low efficiency of traditional anti-icing coatings, the application uses a method of synergistic anti-icing / deicing of photo-thermal electro-thermal and super-hydrophobicity to realize efficient anti-icing / deicing by making full use of solar energy and electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The scanning electron microscope image of the band gap adjustable photo-thermal electro-thermal anti-icing and deicing coating prepared in Example 1;

[0024] Figure 2 The water contact angle diagram of the band gap adjustable photo-thermal electro-thermal anti-icing and deicing coating prepared in Example 1;

[0025] Figure 3 The light absorption rate diagram of the band gap adjustable photo-thermal electro-thermal anti-icing and deicing coating prepared in Example 1;

[0026] Figure 4 The infrared thermal imaging diagram of the band gap adjustable photo-thermal electro-thermal anti-icing and deicing coating prepared in Example 1 at-20 DEG C;

[0027] Figure 5The infrared thermal imaging diagram of the band gap adjustable photothermal electrothermal anti-icing and deicing coating prepared in Example 1 after irradiation of 300 W xenon lamp for 8 min in-20℃ environment;

[0028] Figure 6 The water contact angle change diagram of the band gap adjustable photothermal electrothermal anti-icing and deicing coating prepared in Example 1 after multiple adhesive tape stripping;

[0029] Figure 7 The surface temperature curve diagram of the band gap adjustable photothermal electrothermal anti-icing and deicing coating prepared in Example 1 and the coating prepared in Comparative Example 4 under 1 W / cm 2 +1V voltage. DETAILED DESCRIPTION

[0030] Specific embodiment one: a preparation method of a band gap adjustable photothermal electrothermal anti-icing and deicing coating, which is completed according to the following steps:

[0031] I. Preparation of titanium-doped cubic boron phosphide:

[0032] ①, start the chemical vapor deposition system, and vacuumize to a vacuum degree of 1×10 -3 Pa, introduce hydrogen gas as a carrier gas into the chemical vapor deposition system, control the temperature of the reaction cavity to be 900℃-1100℃, then introduce phosphine and boron tribromide, and deposit for a period of time to obtain cubic boron phosphide;

[0033] ②, heat to 1200℃-1250℃, mix TiCl4 and cubic boron phosphide uniformly, react at 1200℃-1250℃ for a period of time, after the reaction is completed, stop introducing hydrogen gas, and naturally cool to room temperature to obtain cubic boron phosphide-titanium;

[0034] ③, transfer the cubic boron phosphide-titanium to an annealing furnace, keep at 700℃-800℃ for a period of time, and then cool to room temperature to obtain titanium-doped cubic boron phosphide;

[0035] II. Preparation of a photothermal electrothermal anti-icing and deicing coating solution:

[0036] ①, dissolve the conductive carbon black and graphene in distilled water, and ultrasonic for a period of time to obtain a coating water slurry;

[0037] ②, heat the coating water slurry in a water bath for a period of time, then add titanium-doped cubic boron phosphide, stir and react for a period of time, add polydimethylsiloxane, magnetically stir and react for a period of time, add tetramethyldisiloxane, magnetically stir and react for a period of time, then add carboxymethyl cellulose aqueous solution, magnetically stir for a period of time, and finally add dimethyl diphenyl diisocyanate, magnetically stir for a period of time to obtain a photothermal electrothermal anti-icing and deicing coating solution;

[0038] Three, preparation of band gap adjustable photothermal electrothermal anti-icing and deicing coating:

[0039] The photothermal electrothermal anti-icing and deicing coating solution is coated on the aluminum substrate by using a coating machine, and then placed in an oven for drying for a period of time, so as to obtain the band gap adjustable photothermal electrothermal anti-icing and deicing coating on the aluminum substrate.

[0040] Specific implementation two: the difference between this embodiment and specific implementation one is that the gas flow of hydrogen in step one ① is 500 mL / min; the volume flow of phosphine in step one ① is 50 mL / min. The other steps are the same as specific implementation one.

[0041] Specific implementation three: the difference between this embodiment and one of specific implementation one or two is that the volume flow of boron tribromide in step one ① is 5 mL / min; the deposition time in step one ① is 40 min to 60 min. The other steps are the same as specific implementation one or two.

[0042] Specific implementation four: the difference between this embodiment and one of specific implementation one to three is that the reaction time at 1200 ℃ to 1250 ℃ in step one ② is 0.5 h to 1 h; the mass ratio of TiCl4 to cubic boron phosphide in step one ② is 1:(9-10). The other steps are the same as specific implementation one to three.

[0043] Specific implementation five: the difference between this embodiment and one of specific implementation one to four is that the holding time at 700 ℃ to 800 ℃ in step one ③ is 1 h to 1.5 h; the mass ratio of conductive carbon black to graphene in step two ① is (1.5-2):1. The other steps are the same as specific implementation one to four.

[0044] Specific implementation six: the difference between this embodiment and one of specific implementation one to five is that the ultrasonic time in step two ① is 30 min to 40 min; the mass fraction of the coating water slurry in step two ① is 20% to 25%. The other steps are the same as specific implementation one to five.

[0045] Specific implementation seven: the difference between this embodiment and one of specific implementation one to six is that the mass ratio of titanium-doped cubic boron phosphide, polydimethylsiloxane, and tetramethyldisiloxane in step two ② is (3-5):(2-3):(0.5-1.5); the mass ratio of titanium-doped cubic boron phosphide, carboxymethyl cellulose aqueous solution, and dimethyl diphenyl diisocyanate in step two ② is (3-5):(4-6):(7-9). The other steps are the same as specific implementation one to six.

[0046] Embodiment eight: the difference between this embodiment and one of embodiments one to seven is that the temperature of the water bath heating in step two ② is 65℃-70℃, and the time of the water bath heating is 20min-30min; the mass to volume ratio of the titanium-doped cubic boron phosphide to the coating water slurry in step two ② is (3g-5g):(60mL-100mL). The other steps are the same as embodiments one to seven.

[0047] Embodiment nine: the difference between this embodiment and one of embodiments one to eight is that the speed of the magnetic stirring reaction in step two ② is 500rpm-1000rpm, and the time is 10min-60min; the mass fraction of the carboxymethyl cellulose aqueous solution in step two ② is 10%-15%. The other steps are the same as embodiments one to eight.

[0048] Embodiment ten: the difference between this embodiment and one of embodiments one to nine is that the aluminum substrate in step three is an aluminum sheet; the temperature of the drying in step three is 60℃-70℃, and the time of the drying is 2h-3h; the thickness of the band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating in step three is 0.3mm-0.5mm. The other steps are the same as embodiments one to nine.

[0049] The beneficial effects of the present application are verified by the following examples:

[0050] Example 1: a preparation method of a band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating, which is completed according to the following steps:

[0051] I. Preparation of titanium-doped cubic boron phosphide:

[0052] ①, start the chemical vapor deposition system, and then vacuumize to a vacuum degree of 1×10 -3 Pa below, introduce hydrogen gas as a carrier gas into the chemical vapor deposition system, control the temperature of the reaction cavity to be 1000℃, then introduce phosphine and boron tribromide, and deposit for 40min to obtain cubic boron phosphide;

[0053] The gas flow of the hydrogen gas in step one ① is 500mL / min;

[0054] The volume flow of the phosphine in step one ① is 50mL / min;

[0055] The volume flow of the boron tribromide in step one ① is 5mL / min;

[0056] ②, heat to 1200℃, mix 4g TiCl4 and 40g cubic boron phosphide uniformly, react at 1200℃ for 0.5h, after the reaction is completed, stop introducing hydrogen gas, and naturally cool to room temperature to obtain cubic boron phosphide-titanium;

[0057] ③, the cubic boron phosphide-titanium is transferred into an annealing furnace, kept at 800℃ for 1h, and then cooled to room temperature to obtain titanium-doped cubic boron phosphide;

[0058] II. Preparation of a photo-thermal-electric-thermal anti-icing and deicing coating solution:

[0059] ①, the conductive carbon black and graphene are dissolved in distilled water, ultrasonic treatment for 30 min to obtain a coating water slurry;

[0060] The mass ratio of the conductive carbon black and graphene in step two ① is 2:1;

[0061] The mass fraction of the coating water slurry in step two ① is 20%;

[0062] ②, the coating water slurry is heated in a water bath at 65℃ for 20 min, then 4g of titanium-doped cubic boron phosphide is added, magnetic stirring at 600rpm for 10 min, 2.5g of polydimethylsiloxane is added, magnetic stirring at 600rpm for 10 min, 1g of tetramethyldisiloxane is added, magnetic stirring at 600rpm for 10 min, then 5g of carboxymethyl cellulose aqueous solution is added, magnetic stirring at 500rpm for 1h, finally 8g of dimethylphenylenediisocyanate is added, magnetic stirring at 600rpm for 30 min to obtain a photo-thermal-electric-thermal anti-icing and deicing coating solution;

[0063] The mass of titanium-doped cubic boron phosphide to the volume of the coating water slurry in step two ② is 4g:80mL;

[0064] The mass fraction of the carboxymethyl cellulose aqueous solution in step two ② is 10%;

[0065] III. Preparation of a band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating:

[0066] The photo-thermal-electric-thermal anti-icing and deicing coating solution is coated on an aluminum substrate using a coating machine, and then dried in an oven at a temperature of 60℃ for 2h to obtain a band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating on the aluminum substrate;

[0067] The aluminum substrate in step three is a smooth aluminum sheet;

[0068] The thickness of the band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating in step three is 0.3mm.

[0069] Comparative Example 1: The difference between this example and Example 1 is that in step two ②, 8g of dimethylphenylenediisocyanate is omitted. The other steps and parameters are the same as those in Example 1.

[0070] Abrasion resistance test: After 15 tape cycle peel tests, the water contact angle of the coating prepared in Comparative Example 1 decreased to 122°±1°.

[0071] Comparative Example 2: The difference between this example and Example 1 is that the addition of 5g of carboxymethyl cellulose aqueous solution is omitted in step 2②. All other steps and parameters are the same as in Example 1.

[0072] Abrasion resistance test: After 15 tape cycle peel tests, the water contact angle of the coating prepared in Comparative Example 2 decreased to 131±1°.

[0073] Comparative Example 3: The difference between this example and Example 1 is that the mass ratio of conductive carbon black to graphene in step two ① is 1:1. All other steps and parameters are the same as in Example 1.

[0074] The water contact angle of the coating prepared in Comparative Example 3 was 140±1°.

[0075] Comparative Example 4: The difference between this example and Example 1 is that the mass ratio of conductive carbon black to graphene in step two ① is 3:1. All other steps and parameters are the same as in Example 1.

[0076] The water contact angle of the coating prepared in Comparative Example 4 was 149±1°.

[0077] Comparative Example 5: The difference between this example and Example 1 is that the amount of polydimethylsiloxane used in step two ① is 1.5g. All other steps and parameters are the same as in Example 1.

[0078] The water contact angle of the coating prepared in Comparative Example 5 was 142 ± 1°.

[0079] Figure 1 A scanning electron microscope image of the bandgap-adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1;

[0080] from Figure 1 It can be seen that the photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap has a multi-layer micro-nano structure, which can better capture air, significantly reduce the adhesion of ice layer, and help improve the water contact angle of the coating.

[0081] Figure 2 Water contact angle diagram of the bandgap adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1;

[0082] from Figure 2 It can be seen that the water contact angle of the adjustable bandgap photothermal and electrothermal anti-icing and de-icing coating is 150°, indicating that the coating has low ice adhesion and excellent anti-icing ability.

[0083] Figure 3The light absorption rate diagram of the bandgap-adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1 is shown.

[0084] from Figure 3 It can be seen that the light absorption rate of the adjustable bandgap photothermal and electrothermal anti-icing and de-icing coating is as high as 98%, and the coating exhibits excellent light absorption capacity and excellent photothermal performance in anti-icing and de-icing coatings.

[0085] Figure 4 Infrared thermal image of the bandgap adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1 at -20°C;

[0086] from Figure 4 It can be seen that the surface temperature of the adjustable bandgap photothermal and electrothermal anti-icing and de-icing coating is -19.3℃ when no light or electrical energy is applied at -20℃.

[0087] Figure 5 Infrared thermal image of the bandgap adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1 after irradiation with a 300W xenon lamp for 8 minutes at -20°C.

[0088] from Figure 5 It can be seen that: when the bandgap adjustable photothermal and electrothermal anti-icing and de-icing coating is irradiated by a 300W xenon lamp for 8 minutes in an environment of -20℃, the surface temperature of the coating reaches 17.5℃, which is above the freezing point, indicating that the coating has excellent photothermal anti-icing and de-icing performance.

[0089] Figure 6 The image shows the change in water contact angle of the bandgap adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1 after multiple tape peelings.

[0090] from Figure 6 It can be seen that: after 15 tape peel tests on the coating, the water contact angle of the coating was measured with a contact angle meter after every three peels. The water contact angle remained basically unchanged, indicating that the photothermal and electrothermal anti-icing and de-icing coating with adjustable band gap has good wear resistance.

[0091] Figure 7 The bandgap-adjustable photothermal and electrothermal anti-icing and de-icing coating prepared in Example 1 and the coating prepared in Comparative Example 4 are at 1 W / cm 2 Surface temperature curve under +1V voltage.

[0092] Figure 7 Note: At 1W / cm 2 At +1V voltage, when the mass ratio of conductive carbon black to graphene is 2:1, the highest surface temperature is 40℃, compared to 36℃ at a mass ratio of 3:1. The coating surface can achieve a higher temperature and has more significant anti-icing and de-icing performance.

Claims

1. A method for preparing a photothermal electrothermal anti-icing de-icing coating with adjustable band gap, characterized in that The preparation method is specifically completed according to the following steps: I. Preparation of titanium-doped cubic boron phosphide: ①, start the chemical vapor deposition system, vacuum to the vacuum degree is 1x10 -3 Pa below, into the chemical vapor deposition system hydrogen as carrier gas, control the temperature of the reaction cavity is 900 °C ~ 1100 °C, then into the phosphine and boron tribromide, deposition 40 min ~ 60 min, get cubic boron phosphide; ②, heat to 1200~1250 DEG C, TiCl4 and cubic boron phosphide are mixed uniformly, and the mixture is reacted at 1200~1250 DEG C for 0.5~1h, after the reaction is completed, stop passing hydrogen, and cool to room temperature naturally to obtain cubic boron phosphide-titanium; The mass ratio of TiCl4 to cubic boron phosphide in step one ② is 1:(9~10); ③, the cubic boron phosphide-titanium is transferred to an annealing furnace, kept at 700~800 DEG C for 1~1.5h, and then cooled to room temperature to obtain titanium-doped cubic boron phosphide; II. Preparation of photo-thermal-electric-thermal anti-icing and deicing coating solution: ①, the conductive carbon black and graphene are dissolved in distilled water, and ultrasonic is applied for 30~40 min to obtain a coating water slurry; The mass ratio of conductive carbon black to graphene in step two ① is (1.5~2):1; ②, the coating water slurry is heated in a water bath for 20~30 min, then titanium-doped cubic boron phosphide is added, and magnetic stirring is applied for 10~60 min, then polydimethylsiloxane is added, and magnetic stirring is applied for 10~60 min, then tetramethyldisiloxane is added, and magnetic stirring is applied for 10~60 min, then carboxymethyl cellulose aqueous solution is added, and magnetic stirring is applied for 10~60 min, and finally dimethylphenylenediisocyanate is added, and magnetic stirring is applied for 10~60 min to obtain a photo-thermal-electric-thermal anti-icing and deicing coating solution; The mass ratio of titanium-doped cubic boron phosphide, polydimethylsiloxane and tetramethyldisiloxane in step two ② is (3~5):(2~3):(0.5~1.5); The mass ratio of titanium-doped cubic boron phosphide, carboxymethyl cellulose aqueous solution and dimethylphenylenediisocyanate in step two ② is (3~5):(4~6):(7~9); The mass ratio of titanium-doped cubic boron phosphide to the coating water slurry in step two ② is (3g~5g):(60mL~100mL); III. Preparation of band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating: The photo-thermal-electric-thermal anti-icing and deicing coating solution is coated on an aluminum substrate by using a coating machine, and then dried in an oven for 2~3h to obtain a band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating on the aluminum substrate.

2. The method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap according to claim 1, characterized in that... The gas flow of hydrogen in step one ① is 500mL / min; and the volume flow of phosphine in step one ① is 50mL / min.

3. The method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap according to claim 1, characterized in that... The volume flow of boron tribromide in step one ① is 5mL / min.

4. The method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap according to claim 1, characterized in that... The mass fraction of the coating water slurry in step two ① is 20%~25%.

5. The method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap according to claim 1, characterized in that... The temperature of water bath heating in step two ② is 65~70 DEG C.

6. The method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap according to claim 1, characterized in that... The speed of magnetic stirring reaction in step two ② is 500rpm~1000rpm; and the mass fraction of carboxymethyl cellulose aqueous solution in step two ② is 10%~15%.

7. The method for preparing a photothermal and electrothermal anti-icing and de-icing coating with adjustable bandgap according to claim 1, characterized in that... The aluminum substrate in step three is an aluminum sheet; the drying temperature in step three is 60~70 DEG C; and the thickness of the band gap adjustable photo-thermal-electric-thermal anti-icing and deicing coating in step three is 0.3~0.5mm.

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