CN114437603A - Preparation method of durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles - Google Patents
Preparation method of durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles Download PDFInfo
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Abstract
The invention discloses a preparation method of a durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles. The coating not only has excellent super-hydrophobicity performance for micro-droplets below 1 mu L, but also has excellent durability through the synergistic effect of the PS-co-HFA low surface energy binder, the 'core-shell' structure and the low surface energy modified conductive nanoparticles.
Description
Technical Field
The invention relates to a preparation method of an ultralyophobic coating, in particular to a preparation method of a durable ultralyophobic micro-droplet self-cleaning coating based on conductive nanoparticles, and belongs to the technical field of ultralyophobic coating preparation.
Background
An ultralyophobic coating is a special surface coating with a high contact angle (CA > 150 ℃) and a low rolling angle for liquids such as water, oil and the like. Due to the unique wettability, the ultralyophobic coating has wide application prospect in the fields of corrosion prevention, icing prevention, self-cleaning and the like. To date, researchers have developed a number of methods for producing ultralyophobic coatings, such as: sol-gel methods, etching methods, self-assembly methods, vapor deposition methods, and the like. Although the ultralyophobic coating has wide application prospect in various fields, the durability is poor, and the practical application of the ultralyophobic coating is severely limited.
To date, researchers have developed various methods to increase the durability of ultralyophobic coatings, such as: build up of micro "armor" to protect the nanostructures, build up of self-similar structures, introduction of binders, and the like. Among these methods, the introduction of a binder to prepare a durable ultralyophobic coating is favored by researchers because of its advantages such as easy operation and large-area preparation. The Chinese patent CN108587447B firstly adopts alkyl chain silane coupling agent to carry out super-hydrophobic modification on nano silicon dioxide, then disperses the nano silicon dioxide into alkane solvent and introduces polydimethylsiloxane as a binder, and finally repeatedly coats the nano silicon dioxide on the surface of a substrate for many times to successfully prepare the durable transparent super-hydrophobic coating. The Chinese patent CN112175520A firstly grafts low surface energy molecules on the surfaces of nanoparticles to modify the low surface energy of the nanoparticles, then introduces room temperature curing resin to mix to prepare uniform dispersion liquid, and coats the dispersion liquid on the surface of a substrate by spin coating or spray coating to prepare the super-hydrophobic coating, wherein the coating shows good properties of transparency, super-hydrophobicity, durability, self-cleaning and the like.
Although great efforts have been made to improve the durability of ultralyophobic coatings by introducing binders, the binders are usually introduced to embed low surface energy nanoparticles, which makes the surface energy of the ultralyophobic coating higher, and then causes micro-droplets to be in a Wenzel state on the surface of the coating, so that the ultralyophobic coating loses its functionality, and thus the practical application thereof is severely limited. In the invention patent CN113308151A of the invention, FEVE adhesive microspheres are synthesized by non-solvent induced phase separation, and then low-surface-energy nanoparticles are wrapped on the surfaces of the microspheres, so that the problem of embedding of the low-surface-energy nanoparticles by introducing an adhesive is effectively avoided, and the ultra-hydrophobic micro-droplet coating with excellent weather resistance is successfully prepared. However, the surface energy of this coating is still relatively high, resulting in ultralyophobic properties only for liquids greater than 1 μ L, while tiny droplets less than 1 μ L in volume tend to adhere. In addition, because the coating adopts the nano particles with low dielectric constant, the electrostatic action exists on the surface of the coating, and the micro liquid drops with the volume less than 1 mu L are also adhered to the surface of the coating. The problem of adhesion of the tiny droplets can lead to a gradual contamination of the coating, severely limiting the practical application of ultralyophobic coatings.
Disclosure of Invention
The invention aims to provide a preparation method of a durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles, and the preparation method is used for solving the problem that the existing super-hydrophobic coating is easy to adhere to micro-droplets with the volume less than 1 mu L.
Preparation method of durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles
The invention relates to a preparation method of a durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles, which comprises the following steps:
(1) synthesis of Poly (styrene-co-perfluorodecyl acrylate) copolymer (hereinafter referred to as PS-co-HFA) Low surface energy Binder: and sequentially adding styrene with the polymerization inhibitor removed, perfluorodecyl acrylate and azodiisobutyronitrile serving as an initiator into tetrahydrofuran, uniformly mixing, and carrying out reflux reaction at 60-80 ℃ for 18-30 h under the protection of nitrogen until the mixture is viscous, thereby synthesizing the PS-co-HFA low surface energy binder. The molar ratio of the styrene to the perfluorodecyl acrylate is 1: 1-1: 4, and the total mass fraction of the styrene to the perfluorodecyl acrylate in a binder synthesis system is 4.8-33%; the addition amount of the initiator azodiisobutyronitrile is 3-6% of the total amount of the styrene and the perfluorodecyl acrylate.
(2) Preparation of a low surface energy PS-co-HFA binder microparticle dispersion: dissolving the synthesized PS-co-HFA low-surface-energy binder in a benign solvent, and dropwise adding a poor solvent under the stirring condition at room temperature to cause phase separation to obtain the low-surface-energy PS-co-HFA binder micron particle dispersion liquid. Wherein the benign solvent is one of dichloromethane, trichloromethane, ethyl acetate and butyl acetate, and the mass fraction of the PS-co-HFA low surface energy binder in the benign solvent is 15-35%. The poor solvent is one of methanol, ethanol and isopropanol, and the mass ratio of the solvent to the non-solvent is 5: 1-1: 1.
(3) Preparing the low-surface-energy modified conductive nanoparticles: dispersing conductive nanoparticles into absolute ethyl alcohol, adding ammonia water as a catalyst, adding gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and perfluorodecyl trimethoxy silane under the stirring condition, reacting at room temperature for 2-8 h to prepare low-surface-energy modified conductive nanoparticle suspension, and performing suction filtration, drying and crushing on the suspension to prepare the low-surface-energy modified conductive nanoparticles. The conductive nano particles are at least one of carbon black, carboxylated carbon nano tubes and hydroxylated carbon nano tubes, the mass ratio of the perfluorodecyl trimethoxy silane to the conductive nano particles is 2: 1-4: 1, and the mass ratio of the gamma- (2, 3-glycidoxy) propyl trimethoxy silane to the perfluorodecyl trimethoxy silane is 1: 6-1: 3; the ammonia water has a conventional concentration (25-30%) and has a volume fraction of 4-20% in a reaction system.
(4) The preparation of the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nano-particles comprises the following steps: adding the low-surface-energy modified conductive nanoparticles into the low-surface-energy PS-co-HFA binder micron particle dispersion liquid, stirring and assisting ultrasonic dispersion to be uniform to prepare a PS-co-HFA @ conductive nanoparticle micron particle dispersion liquid with a core-shell structure, spraying the PS-co-HFA @ conductive nanoparticle micron particle dispersion liquid on the surface of a base material at room temperature, and curing at room temperature to obtain the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles. The mass ratio of the low-surface-energy PS-co-HFA binder micron particle dispersion liquid to the low-surface-energy modified conductive nanoparticles is 1: 0.5-1: 1. The base material is one of glass, magnesium alloy, aluminum alloy, ABS and PP.
Second, the performance of the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nano particles
(1) Ultra-hydrophobic droplet performance
The test shows that the contact angle of the coating to 1 mu L water drop is more than 160 degrees and the rolling angle is less than 1.5 degrees; the contact angle of 0.5 mu L of water drop is more than 155 degrees, and the rolling angle is less than 4.3 degrees, which shows that the coating prepared by the invention has excellent ultra-hydrophobic micro-drop performance.
(2) Durability test
The contact angle of the coating to 1 mu L water drop after Taber rubbing for 200 times under the condition of loading 250g is more than 158 degrees and the rolling angle is less than 2.7 degrees; the contact angle for a 0.5 mul drop is greater than 152 ° and the rolling angle is less than 8.6 °, demonstrating excellent rub resistance of the coating.
The super-hydrophobic micro-droplet performance of the coating is not obviously changed after the coating is soaked in 1M hydrochloric acid, 1M sodium hydroxide and 1M sodium chloride solution for 24 hours. The coating proved to have excellent chemical stability.
After the coating is subjected to ultraviolet accelerated aging for 360 hours, the contact angle of the coating to 1 mu L of water drops is larger than 156 degrees, and the rolling angle is smaller than 4.5 degrees; the contact angle for a 0.5 mul drop is greater than 150 ° and the sliding angle is less than 9.8 °. The coating proved to have excellent environmental stability.
In summary, the present invention has the following advantages over the prior art:
(1) the influence of the introduction of the adhesive on the surface energy of the coating is weakened by synthesizing the fluorine-containing low-surface-energy adhesive through free radical polymerization; the modified low-surface-energy nano particles are wrapped on the surfaces of the adhesive micro particles to avoid the defect that the adhesive coats the low-surface-energy nano particles, and the two strategies are combined to reduce the influence of the introduction of the adhesive on the surface energy of the super-lyophobic coating to the minimum;
(2) the super-lyophobic coating with the conductive performance is constructed by adopting the conductive nano particles with low surface energy modification, so that the defect that micro-droplets are adhered to the surface of the coating due to the electrostatic action of the coating is effectively overcome. The durable super-hydrophobic micro-droplet self-cleaning coating prepared by the invention effectively solves the problem that the coating is gradually polluted due to the adhesion of the coating to micro-droplets (less than or equal to 1 mu L), and has great significance for the practical application of super-hydrophobic coatings.
Detailed Description
The preparation and performance of the durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles of the present invention are further illustrated by the following specific examples.
Example 1
(1) 1g of styrene without polymerization inhibitor, 13g of perfluorodecyl acrylate, 0.48g of azobisisobutyronitrile and 150g of tetrahydrofuran are sequentially added into a 250mL round-bottom flask, nitrogen is introduced to remove oxygen for 30min, and the PS-co-HFA low surface energy adhesive is synthesized by reflux reaction at 70 ℃ for 24h under the protection of nitrogen.
(2) 2.5g of the synthesized PS-co-HFA low surface energy binder is dissolved in 7.5g of dichloromethane, and 3g of methanol is added dropwise under the condition of stirring at room temperature to cause non-solvent phase separation, so as to prepare the low surface energy PS-co-HFA binder micron particle dispersion liquid.
(3) Dispersing 5g of carbon black nano particles into 400mL of absolute ethyl alcohol, adding 100mL of ammonia water, stirring for 20min and ultrasonically dispersing for 10min, then adding 3g of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and 15g of perfluorodecyl trimethoxy silane under the condition of stirring at room temperature, reacting for 2h to prepare low-surface-energy modified carbon black nano particle suspension, and finally carrying out suction filtration, drying and crushing on the suspension to prepare the low-surface-energy modified carbon black nano particles.
(4) Adding 9.1g of low-surface-energy modified carbon black nano particles into 13g of low-surface-energy PS-co-HFA binder micro particle dispersion liquid, stirring for 30min and carrying out ultrasonic treatment for 10min to obtain a PS-co-HFA @ carbon black nano particle micro particle dispersion liquid with a core-shell structure, then spraying the PS-co-HFA @ carbon black nano particle micro particle dispersion liquid onto the surface of glass at room temperature, and curing for 24h at room temperature to obtain the durable super-hydrophobic micro droplet self-cleaning coating based on the carbon black nano particles. The coating properties are shown in table 1 below,
TABLE 1 initial ultraphobic microdroplet properties and stability of the coating of example 1
Example 2
(1) 1g of styrene without polymerization inhibitor, 16g of perfluorodecyl acrylate, 0.45g of azobisisobutyronitrile and 125g of tetrahydrofuran are sequentially added into a 250mL round-bottom flask, nitrogen is introduced to remove oxygen for 30min, and the PS-co-HFA low surface energy adhesive is synthesized by reflux reaction at 70 ℃ for 24h under the protection of nitrogen.
(2) Dissolving 2.5g of the synthesized PS-co-HFA low-surface-energy binder in 8g of chloroform, and dropwise adding 3.5g of ethanol at room temperature under stirring to perform non-solvent induced phase separation to obtain the PS-co-HFA binder micron particle dispersion liquid.
(3) Dispersing 5g of carbon black nano particles into 450mL of absolute ethyl alcohol, adding 50mL of ammonia water, stirring for 20min and ultrasonically dispersing for 10min, then adding 3g of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and 12g of perfluorodecyl trimethoxy silane under the condition of stirring at room temperature, reacting for 2h to prepare low-surface-energy modified carbon black nano particle suspension, and finally carrying out suction filtration, drying and crushing on the suspension to prepare the low-surface-energy modified carbon black nano particles.
(4) Adding 9g of low-surface-energy modified carbon black nano particles into 14g of low-surface-energy PS-co-HFA binder micro particle dispersion liquid, stirring for 30min, performing ultrasonic treatment for 10min to obtain a PS-co-HFA @ carbon black nano particle dispersion liquid with a core-shell structure, spraying the PS-co-HFA @ carbon black nano particle dispersion liquid on the surface of a magnesium alloy at room temperature, and curing for 24h at room temperature to obtain the durable super-hydrophobic micro droplet self-cleaning coating based on the carbon black nano particles. The coating properties are shown in table 2 below,
TABLE 2 initial ultraphobic microdroplet properties and stability of the coatings of example 2
Example 3
(1) 1g of styrene without polymerization inhibitor, 13g of perfluorodecyl acrylate, 0.48g of azobisisobutyronitrile and 150g of tetrahydrofuran are sequentially added into a 250mL round-bottom flask, nitrogen is introduced to remove oxygen for 30min, and the PS-co-HFA low surface energy adhesive is synthesized by reflux reaction at 70 ℃ for 24h under the protection of nitrogen.
(2) 2.5g of the synthesized PS-co-HFA low-surface-energy binder is dissolved in 7.5g of dichloromethane, and 3g of methanol is added dropwise under the condition of stirring at room temperature to cause non-solvent-induced phase separation, so as to prepare the PS-co-HFA binder micron particle dispersion liquid.
(3) Dispersing 7.5g of hydroxylated carbon nanotube into 430mL of absolute ethyl alcohol, adding 70mL of ammonia water, stirring for 20min and ultrasonically dispersing for 10min, then adding 4.5g of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and 18g of perfluorodecyl trimethoxy silane under the condition of stirring at room temperature, reacting for 2h to prepare low-surface-energy modified carbon nanotube suspension, and finally carrying out suction filtration, drying and crushing on the suspension to prepare the low-surface-energy modified carbon nanotube.
(4) Adding 8g of low-surface-energy modified carbon nano tube into 13g of low-surface-energy PS-co-HFA binder micron particle dispersion liquid, stirring for 30min, performing ultrasound treatment for 10min to obtain a core-shell structure PS-co-HFA @ carbon nano tube micron particle dispersion liquid, spraying the core-shell structure PS-co-HFA @ carbon nano tube micron particle dispersion liquid on the surface of an aluminum alloy at room temperature, and curing at room temperature for 24h to obtain the durable super-hydrophobic micro-droplet self-cleaning coating based on the carbon nano tube. The coating properties are shown in table 3,
TABLE 3 initial ultraphobic droplet properties and stability of the coatings of example 3
Example 4
(1) 1g of styrene without polymerization inhibitor, 16g of perfluorodecyl acrylate, 0.45g of azobisisobutyronitrile and 125g of tetrahydrofuran are sequentially added into a 250mL round-bottom flask, nitrogen is introduced to remove oxygen for 30min, and the PS-co-HFA low surface energy adhesive is synthesized by reflux reaction at 70 ℃ for 24h under the protection of nitrogen.
(2) Dissolving 2.5g of the synthesized PS-co-HFA low-surface-energy binder in 8g of chloroform, and dropwise adding 3.5g of ethanol at room temperature under stirring to perform non-solvent induced phase separation to obtain the PS-co-HFA binder micron particle dispersion liquid.
(3) Dispersing 8g of carboxylated carbon nanotubes into 460mL of absolute ethyl alcohol, adding 40mL of ammonia water, stirring for 20min, performing ultrasonic dispersion for 10min, then adding 5g of gamma- (2, 3-glycidoxy) propyl trimethoxy silane and 20g of perfluorodecyl trimethoxy silane under the condition of stirring at room temperature, reacting for 2h to prepare low-surface-energy modified carbon nanotube suspension, and finally performing suction filtration, drying and crushing on the suspension to prepare the low-surface-energy modified carbon nanotubes.
(4) Adding 8g of low surface energy modified carbon nano tube into 13g of low surface energy PS-co-HFA binder micron particle dispersion liquid, stirring for 30min, performing ultrasonic treatment for 10min to obtain a core-shell structure PS-co-HFA @ carbon nano tube micron particle dispersion liquid, spraying the core-shell structure PS-co-HFA @ carbon nano tube micron particle dispersion liquid on the surface of ABS at room temperature, and curing at room temperature for 24h to obtain the durable super-hydrophobic micro-droplet self-cleaning coating based on the carbon nano tube. The coating properties are shown in table 4 below,
TABLE 4 initial ultraphobic droplet properties and stability of the coatings of EXAMPLE 4
Example 5
(1) 1g of styrene without polymerization inhibitor, 20g of perfluorodecyl acrylate, 0.48g of azobisisobutyronitrile and 150g of tetrahydrofuran are sequentially added into a 250mL round-bottom flask, nitrogen is introduced to remove oxygen for 30min, and the PS-co-HFA low surface energy adhesive is synthesized by reflux reaction at 70 ℃ for 24h under the protection of nitrogen.
(2) 3g of the synthesized PS-co-HFA low-surface-energy binder is dissolved in 7g of ethyl acetate, and 4.5g of isopropanol is added dropwise under the condition of stirring at room temperature to cause non-solvent-induced phase separation, so as to prepare the PS-co-HFA binder micron particle dispersion liquid.
(3) Dispersing 5g of carbon black nano particles into 480mL of absolute ethyl alcohol, adding 20mL of ammonia water, stirring for 20min and ultrasonically dispersing for 10min, then adding 3g of gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and 15g of perfluorodecyl triethoxysilane under the stirring condition at room temperature, reacting for 2h to prepare low-surface-energy modified carbon black nano particle suspension, and finally carrying out suction filtration, drying and crushing on the suspension to prepare the low-surface-energy modified carbon black nano particles.
(4) Adding 10g of low-surface-energy modified carbon black nano particles into 14.5g of low-surface-energy PS-co-HFA binder micron particle dispersion liquid, stirring for 30min and carrying out ultrasonic treatment for 10min to obtain a core-shell structure PS-co-HFA @ carbon black nano particle micron particle dispersion liquid, then spraying the core-shell structure PS-co-HFA @ carbon black nano particle micron particle dispersion liquid on the surface of glass at room temperature, and curing for 24h at room temperature to obtain the durable super-hydrophobic micro droplet self-cleaning coating based on the carbon black nano particles. The coating properties are shown in table 5 below,
TABLE 5 initial ultraphobic droplet properties and stability of the coatings of example 5
Claims (10)
1. A preparation method of a durable super-hydrophobic micro-droplet self-cleaning coating based on conductive nanoparticles comprises the following process steps:
(1) synthesis of Poly (styrene-co-perfluorodecyl acrylate) copolymer Low surface energy Binder: sequentially adding styrene with the polymerization inhibitor removed, perfluorodecyl acrylate and azodiisobutyronitrile serving as an initiator into tetrahydrofuran, uniformly mixing, and carrying out reflux reaction at 60-80 ℃ for 18-30 hours to obtain a viscous material under the protection of nitrogen, so as to synthesize the poly (styrene-co-perfluorodecyl acrylate) copolymer low surface energy binder;
(2) preparation of low surface energy poly (styrene-co-perfluorodecyl acrylate) copolymer binder microparticle dispersion: dissolving a poly (styrene-co-perfluorodecyl acrylate) copolymer low-surface-energy binder in a benign solvent, dropwise adding a poor solvent under the stirring condition to separate the poor solvent from the benign solvent, and preparing a low-surface-energy poly (styrene-co-perfluorodecyl acrylate) copolymer binder micron particle dispersion liquid;
(3) preparing the low-surface-energy modified conductive nanoparticles: dispersing conductive nanoparticles into absolute ethyl alcohol, adding ammonia water as a catalyst, adding gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane and perfluoro decyl trimethoxy silane under the stirring condition, reacting at room temperature for 2-8 h to prepare low-surface-energy modified conductive nanoparticle suspension, and finally carrying out suction filtration, drying and crushing on the suspension to prepare low-surface-energy modified conductive nanoparticles;
(4) the preparation of the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nano-particles comprises the following steps: adding the low-surface-energy modified conductive nanoparticles obtained in the step (4) into the low-surface-energy poly (styrene-co-perfluorodecyl acrylate) copolymer binder micron particle dispersion liquid obtained in the step (2), stirring and assisting ultrasonic dispersion to be uniform, so as to prepare a core-shell structure poly (styrene-co-perfluorodecyl acrylate) copolymer @ conductive nanoparticle micron particle dispersion liquid; and then spraying the nano-particles on the surface of a base material at room temperature, and curing at room temperature to obtain the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nano-particles.
2. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (1), the molar ratio of the styrene to the perfluorodecyl acrylate is 1: 1-1: 4, and the total mass fraction of the styrene to the perfluorodecyl acrylate in a binder synthesis system is 4.8% -33%.
3. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (1), the addition amount of the initiator azobisisobutyronitrile is 3% -6% of the total amount of the styrene and the perfluorodecyl acrylate.
4. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (2), the benign solvent is one of dichloromethane, trichloromethane, ethyl acetate and butyl acetate, and the mass fraction of the poly (styrene-co-perfluorodecyl acrylate) copolymer low-surface-energy binder in the benign solvent is 15-35%.
5. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (2), the poor solvent is one of methanol, ethanol and isopropanol, and the mass ratio of the benign solvent to the poor solvent is 5: 1-1: 1.
6. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (3), the conductive nanoparticles are at least one of carbon black, carboxylated carbon nanotubes and hydroxylated carbon nanotubes.
7. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (3), the mass ratio of the perfluorodecyl trimethoxy silane to the conductive nanoparticles is 2: 1-4: 1, and the mass ratio of the gamma- (2, 3-glycidoxy) propyl trimethoxy silane to the perfluorodecyl trimethoxy silane is 1: 6-1: 3.
8. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (3), ammonia water is used as a catalyst, and the volume fraction of the ammonia water in the reaction system is 4-20%.
9. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (4), the mass ratio of the low-surface-energy poly (styrene-co-perfluorodecyl acrylate) copolymer binder micron particle dispersion liquid to the low-surface-energy modified conductive nanoparticles is 1: 0.5-1: 1.
10. The method for preparing the durable super-hydrophobic micro-droplet self-cleaning coating based on the conductive nanoparticles as claimed in claim 1, wherein the method comprises the following steps: in the step (4), the base material is one of glass, magnesium alloy, aluminum alloy, ABS and PP.
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