Coating with hydrophobic, oleophobic and anti-icing functions and preparation method thereof

Abstract

The invention discloses a coating with hydrophobic, oleophobic and anti-icing functions and a preparation method, and relates to the technical field of coating preparation, the coating is composed of a primer and a finish, the primer is composed of 300-350 parts by mass of a super-weather-resistant fluorocarbon resin body and 200-250 parts by mass of an efficient light conversion substance, and the finish is composed of 150-260 parts by mass of silicon dioxide particles. According to the coating prepared from the primer composed of the super-weather-resistant fluorocarbon resin body and the efficient light conversion substance and the finish composed of the silicon dioxide particles, the primer provides a rough structure for a coating, physical and mechanical properties such as adhesive force and weather resistance are guaranteed, ice melting can be accelerated, the finish endows the coating with super-hydrophobic and super-oleophobic basic performance and the anti-icing characteristic, and the coating has the super-hydrophobic and super-oleophobic performance and the anti-icing characteristic. The coating also has anti-condensation, anti-pollution flashover, anti-icing, waterproof and dustproof effects, so that the performance is diversified, the application scene is improved, the preparation process is simple, the raw materials are easy to obtain, and the coating is non-toxic, pollution-free, environment-friendly and beneficial to popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and in particular to a coating having both hydrophobic and oleophobic and anti-icing functions and a preparation method thereof. Background Art

[0002] With the construction and networking of ultra-high voltage transmission lines, the safety and stability of transmission lines are becoming increasingly important. Ice is very harmful and will have a great impact on the actual power system, seriously reducing the power supply capacity of equipment, affecting the power demand of users, and even causing dangerous accidents. This is a major safety hazard in real life. The impact of ice on the power system cannot be ignored. Its harm makes it impossible for power equipment to provide power supply services safely and cannot meet the power supply in production. There is no good solution to the problem of preventing ice in the world. This is a global problem. Through unremitting efforts and research, domestic and foreign scholars have conducted a large number of experimental and theoretical studies on the problem of ice in power systems, achieved many satisfactory results, and proposed many solutions and new technologies. According to different ways of dealing with ice surfaces, they are mainly divided into the following four categories: (1) thermal ice melting method; (2) mechanical ice breaking method; (3) natural passive method; (4) other methods.

[0003] These methods have been used in actual power systems, but these methods of dealing with icing have great disadvantages. For example, the speed of dealing with icing is very slow and requires a lot of energy. They cannot meet the needs of icing treatment in actual power system operations. Therefore, further research and improvement of anti-icing technology is needed, which is crucial to the development of power systems.

[0004] Hydrophobic material is a new type of bionic functional material that has emerged and developed in the past two decades. Its application is most likely to bring about a huge breakthrough in anti-icing technology. However, the hydrophobic coatings commonly used on the market do not have a good anti-icing effect. Even for super-hydrophobic coatings, the super-hydrophobic property rarely delays ice formation for more than half an hour, which is difficult to meet the needs of real life. Summary of the invention

[0005] The purpose of the present invention is to provide a coating and a preparation method having both hydrophobic and oleophobic and anti-icing functions, so as to solve the problem mentioned in the above background technology that the hydrophobic coatings commonly used on the market do not have a good anti-icing effect. Even for super-hydrophobic coatings, the super-hydrophobic performance of the coating rarely delays the freezing time by more than half an hour, which is difficult to meet the needs in real life.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: The coating with both hydrophobic and oleophobic and anti-icing functions consists of a primer and a topcoat, wherein the raw materials of the primer and the topcoat are calculated by weight: the primer consists of 300-350 parts of super-weather-resistant fluorocarbon resin and 200-250 parts of high-efficiency light conversion material, and the topcoat consists of 150-260 parts of silicon dioxide particles.

[0007] Preferably, the high-efficiency light conversion material is any one of metal oxides, non-metallic semiconductors, sulfides, and bismuth-based photocatalysts, and the metal oxide is TiO 2 , Fe 2 O 3 , WO 3 , ZnO, Cu 2 O、SnO 2 Any of these.

[0008] Preferably, the non-metallic semiconductor is gC 3 N 4 The sulfide is CdS, ZnS, MoS 2 Any one of which, the bismuth-based photocatalyst is BiVO 4 、Bi 2 WO 6 、Bi 2 MoO 6 Any of these.

[0009] Preferably, the primary particle size of the silicon dioxide particles is 50 nm.

[0010] A method for preparing a coating having both hydrophobic and oleophobic functions and anti-icing functions, comprising: S101, adding the super-weather-resistant fluorocarbon resin in the formula, adding 8%-10% of the high-efficiency light-conversion material in the total amount of the coating into the paint tank, and then adding the dispersant under stirring to disperse; S102, after the initial dispersion is completed, silicon dioxide particles are added and dispersed again to prepare the coating having both hydrophobic and oleophobic and anti-icing functions.

[0011] Preferably, in S100, the dispersion is carried out at a speed of 1500-1800 rpm for 3-8 minutes.

[0012] Preferably, in S101, the dispersion is carried out at a speed of 1800-2000 rpm for 6-9 minutes.

[0013] Preferably, the preparation process of the super weather-resistant fluorocarbon resin body is as follows: S201, adding 100 parts by weight of perfluorooctanoic acid, 40-60 parts by weight of thionyl chloride, and 1-2 parts by weight of a catalyst into a flask, reacting at 75° C. for 1 hour, and collecting a fraction at 60-72° C. to obtain component A; S202, slowly dropwise adding 20-30 parts by weight of ethanolamine into component A, heating to 30° C. and reacting for 3 hours to obtain component B; S203, adding 10-20 parts by weight of methyl isobutyl ketone and 15-25 parts by weight of 2,4-toluene diisocyanate dropwise into component B under nitrogen protection, and recrystallizing to obtain component C in the form of light brown transparent crystals; S204, adding component C to the oil, and reacting at 80°C to obtain fluorocarbon resin.

[0014] Preferably, the catalyst is any one of N,N-dimethylformyl, tetrahydrofuran, and dibutyltin laurate.

[0015] Preferably, the resin is any one of methyl methacrylate, ethyl acrylate and butyl acrylate.

[0016] The beneficial effects of the present invention are: The coating is prepared by a primer composed of a super-weather-resistant fluorocarbon resin body and a high-efficiency light-conversion material, and a topcoat composed of silicon dioxide particles. The primer provides a rough structure for the coating to ensure physical and mechanical properties such as adhesion and weather resistance, and can also accelerate ice melting. The topcoat gives the coating basic super-hydrophobic and super-oleophobic properties and anti-icing properties, and also has anti-condensation, anti-fouling flashover, anti-icing, as well as waterproof and dustproof effects, so that the performance is diversified and the application scenarios are improved. The preparation process is simple, the raw materials are easily obtained, non-toxic and pollution-free, and environmentally friendly, which meets the needs of the staff and is conducive to promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the preparation method of the coating having both hydrophobic and oleophobic functions and anti-icing functions in the present invention; Figure 2 It is a schematic diagram of the preparation method of the super weather-resistant fluorocarbon resin body in the present invention. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] Example 1 See also Figure 1-Figure 2 As shown, the coating with both hydrophobic and oleophobic and anti-icing functions is composed of a primer and a topcoat, wherein the raw materials of the primer and the topcoat are calculated by weight: the primer is composed of 300 parts of super weather-resistant fluorocarbon resin and 200 parts of high-efficiency light conversion substances, and the topcoat is composed of 150 parts of silica particles.

[0020] The high-efficiency light conversion material is any one of metal oxides, non-metallic semiconductors, sulfides, and bismuth-based photocatalysts, and the metal oxide is TiO 2 , Fe 2 O 3 , WO 3 , ZnO, Cu 2 O、SnO 2 Any of these.

[0021] Non-metallic semiconductor is gC 3 N 4 , sulfides are CdS, ZnS, MoS 2 Any one of which, the bismuth-based photocatalyst is BiVO 4 、Bi 2 WO 6 、Bi 2 MoO 6 Any of these.

[0022] The primary particle size of silica particles is 50 nm.

[0023] A method for preparing a coating having both hydrophobic and oleophobic functions and anti-icing functions, comprising: S101, adding the super-weather-resistant fluorocarbon resin in the formula, adding 8%-10% of the high-efficiency light-conversion material in the total amount of the coating into the paint tank, and then adding the dispersant under stirring to disperse; S102. After the initial dispersion is completed, silicon dioxide particles are added and dispersed again to prepare a coating with both hydrophobic and oleophobic and anti-icing functions.

[0024] In S101, the dispersion is carried out at a speed of 1500-1800 rpm for 3-8 minutes.

[0025] In S102, the dispersion is carried out at a speed of 1800-2000 rpm for 6-9 minutes.

[0026] The preparation process of super weather-resistant fluorocarbon resin is as follows: S201, adding 100 parts by weight of perfluorooctanoic acid, 40-60 parts by weight of thionyl chloride, and 1-2 parts by weight of a catalyst into a flask, reacting at 75° C. for 1 hour, and collecting a fraction at 60-72° C. to obtain component A; S202, slowly dropwise adding 20-30 parts by weight of ethanolamine into component A, heating to 30° C. and reacting for 3 hours to obtain component B; S203, adding 10-20 parts by weight of methyl isobutyl ketone and 15-25 parts by weight of 2,4-toluene diisocyanate dropwise into component B under nitrogen protection, and recrystallizing to obtain component C in the form of light brown transparent crystals; S204, adding component C to the oil, and reacting at 80°C to obtain fluorocarbon resin.

[0027] The catalyst is any one of N,N-dimethylformyl, tetrahydrofuran and dibutyltin laurate.

[0028] The resin is any one of methyl methacrylate, ethyl acrylate and butyl acrylate.

[0029] Example 2 See also Figure 1-Figure 2 As shown, the coating with both hydrophobic and oleophobic and anti-icing functions is composed of a primer and a topcoat, wherein the raw materials of the primer and the topcoat are calculated by weight: the primer is composed of 320 parts of super weather-resistant fluorocarbon resin and 230 parts of high-efficiency light conversion substances, and the topcoat is composed of 240 parts of silica particles.

[0030] The high-efficiency light conversion material is any one of metal oxides, non-metallic semiconductors, sulfides, and bismuth-based photocatalysts, and the metal oxide is TiO 2 , Fe 2 O 3 , WO 3 , ZnO, Cu 2 O、SnO 2 Any of these.

[0031] Non-metallic semiconductor is gC 3 N 4 , sulfides are CdS, ZnS, MoS 2 Any one of which, the bismuth-based photocatalyst is BiVO 4 、Bi 2 WO 6 、Bi 2 MoO 6 Any of these.

[0032] The primary particle size of silica particles is 50 nm.

[0033] A method for preparing a coating having both hydrophobic and oleophobic functions and anti-icing functions, comprising: S101, adding the super-weather-resistant fluorocarbon resin in the formula, adding 8%-10% of the high-efficiency light-conversion material in the total amount of the coating into the paint tank, and then adding the dispersant under stirring to disperse; S102. After the initial dispersion is completed, silicon dioxide particles are added and dispersed again to prepare a coating with both hydrophobic and oleophobic and anti-icing functions.

[0034] In S101, the dispersion is carried out at a speed of 1500-1800 rpm for 3-8 minutes.

[0035] In S102, the dispersion is carried out at a speed of 1800-2000 rpm for 6-9 minutes.

[0036] The preparation process of super weather-resistant fluorocarbon resin is as follows: S201, adding 100 parts by weight of perfluorooctanoic acid, 40-60 parts by weight of thionyl chloride, and 1-2 parts by weight of a catalyst into a flask, reacting at 75° C. for 1 hour, and collecting a fraction at 60-72° C. to obtain component A; S202, slowly dropwise adding 20-30 parts by weight of ethanolamine into component A, heating to 30° C. and reacting for 3 hours to obtain component B; S203, adding 10-20 parts by weight of methyl isobutyl ketone and 15-25 parts by weight of 2,4-toluene diisocyanate dropwise into component B under nitrogen protection, and recrystallizing to obtain component C in the form of light brown transparent crystals; S204, adding component C to the oil, and reacting at 80°C to obtain fluorocarbon resin.

[0037] The catalyst is any one of N,N-dimethylformyl, tetrahydrofuran and dibutyltin laurate.

[0038] The resin is any one of methyl methacrylate, ethyl acrylate and butyl acrylate.

[0039] Example 3 See also Figure 1-Figure 2 As shown, the coating with both hydrophobic and oleophobic and anti-icing functions is composed of a primer and a topcoat, wherein the raw materials of the primer and the topcoat are calculated by weight: the primer is composed of 350 parts of super weather-resistant fluorocarbon resin and 250 parts of high-efficiency light conversion substances, and the topcoat is composed of 260 parts of silica particles.

[0040] The high-efficiency light conversion material is any one of metal oxides, non-metallic semiconductors, sulfides, and bismuth-based photocatalysts, and the metal oxide is TiO 2 , Fe 2 O 3 , WO 3 , ZnO, Cu 2 O、SnO 2 Any of these.

[0041] Non-metallic semiconductor is gC 3 N 4 , sulfides are CdS, ZnS, MoS 2 Any one of which, the bismuth-based photocatalyst is BiVO 4 、Bi 2 WO 6 、Bi 2 MoO 6 Any of these.

[0042] The primary particle size of silica particles is 50 nm.

[0043] A method for preparing a coating having both hydrophobic and oleophobic functions and anti-icing functions, comprising: S101, adding the super-weather-resistant fluorocarbon resin in the formula, adding 8%-10% of the high-efficiency light-conversion material in the total amount of the coating into the paint tank, and then adding the dispersant under stirring to disperse; S102. After the initial dispersion is completed, silicon dioxide particles are added and dispersed again to prepare a coating with both hydrophobic and oleophobic and anti-icing functions.

[0044] In S101, the dispersion is carried out at a speed of 1500-1800 rpm for 3-8 minutes.

[0045] In S102, the dispersion is carried out at a speed of 1800-2000 rpm for 6-9 minutes.

[0046] The preparation process of super weather-resistant fluorocarbon resin is as follows: S201, adding 100 parts by weight of perfluorooctanoic acid, 40-60 parts by weight of thionyl chloride, and 1-2 parts by weight of a catalyst into a flask, reacting at 75° C. for 1 hour, and collecting a fraction at 60-72° C. to obtain component A; S202, slowly dropwise adding 20-30 parts by weight of ethanolamine into component A, heating to 30° C. and reacting for 3 hours to obtain component B; S203, adding 10-20 parts by weight of methyl isobutyl ketone and 15-25 parts by weight of 2,4-toluene diisocyanate dropwise into component B under nitrogen protection, and recrystallizing to obtain component C in the form of light brown transparent crystals; S204, adding component C to the oil, and reacting at 80°C to obtain fluorocarbon resin.

[0047] The catalyst is any one of N,N-dimethylformyl, tetrahydrofuran and dibutyltin laurate.

[0048] The resin is any one of methyl methacrylate, ethyl acrylate and butyl acrylate.

[0049] Example 4 The prepared coating with both hydrophobic and oleophobic and anti-icing functions was tested: 1. Laboratory test: After 36 hours under freezing rain conditions, the conductors, insulators, and stainless steel plates treated with the coating showed no ice layer adhesion or extremely low ice layer adhesion strength and easy ice detachment compared to the untreated blank group.

[0050] 2. Actual application scenario test: In the application scenarios such as the 55-56 ground line of Shanying, the fan blades of Jiangjunling in Pingshun, Shanxi, and the Pinglian Expressway of the 10kV Zhecun Line in Pingxiang, Jiangxi, the coating can reduce the amount of ice and reduce the adhesion of ice. However, it cannot completely prevent ice under heavy ice conditions; in mixed weather of rime and freezing rain, although it cannot prevent ice adhesion, it can change the ice morphology.

[0051] In summary, the coating of the present invention is prepared by a primer composed of a super-weather-resistant fluorocarbon resin body and a high-efficiency light-conversion substance, and a topcoat composed of silica particles. The primer provides a rough structure for the coating to ensure physical and mechanical properties such as adhesion and weather resistance, and can also accelerate ice melting. The topcoat gives the coating super-hydrophobic and super-oleophobic basic properties and anti-icing properties, and also has anti-condensation, anti-fouling flashover, anti-icing, as well as waterproof and dustproof effects, so that the performance is diversified and the application scenarios are improved. The preparation process is simple, the raw materials are easily obtained, non-toxic and pollution-free, environmentally friendly, meets the needs of the staff, and is conducive to promotion and use.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A coating having both hydrophobic and oleophobic and anti-icing functions, characterized in that , consisting of a primer and a topcoat, wherein the raw materials of the primer and the topcoat are calculated by mass: the primer consists of 300-350 parts of super weather-resistant fluorocarbon resin and 200-250 parts of high-efficiency light conversion material, and the topcoat consists of 150-260 parts of silica particles.

2. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 1, characterized in that: The high-efficiency light conversion material is any one of metal oxides, non-metallic semiconductors, sulfides, and bismuth-based photocatalysts, and the metal oxide is any one of TiO2, Fe2O3, WO3, ZnO, Cu2O, and SnO2.

3. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 1, characterized in that: The non-metallic semiconductor is g-C3N4, the sulfide is any one of CdS, ZnS, and MoS2, and the bismuth-based photocatalyst is any one of BiVO4, Bi2WO6, and Bi2MoO6.

4. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 1, characterized in that: The primary particle size of the silicon dioxide particles is 50 nm.

5. A method for preparing a coating having both hydrophobic and oleophobic properties and anti-icing properties, characterized in that: include: S101, adding the super-weather-resistant fluorocarbon resin in the formula, adding 8%-10% of the high-efficiency light-conversion material in the total amount of the coating into the paint tank, and then adding the dispersant under stirring to disperse; S102, after the initial dispersion is completed, silicon dioxide particles are added and dispersed again to prepare the coating having both hydrophobic and oleophobic and anti-icing functions.

6. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 5, characterized in that: In the S101, the dispersion is carried out at a speed of 1500-1800 rpm for 3-8 minutes.

7. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 5, characterized in that: In the S102, the dispersion is performed at a speed of 1800-2000 rpm for 6-9 minutes.

8. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 5, characterized in that: The preparation process of the super weather-resistant fluorocarbon resin body is as follows: S201, adding 100 parts by weight of perfluorooctanoic acid, 40-60 parts by weight of thionyl chloride, and 1-2 parts by weight of a catalyst into a flask, reacting at 75° C. for 1 hour, and collecting a fraction at 60-72° C. to obtain component A; S202, slowly dropwise adding 20-30 parts by weight of ethanolamine into component A, heating to 30° C. and reacting for 3 hours to obtain component B; S203, adding 10-20 parts by weight of methyl isobutyl ketone and 15-25 parts by weight of 2,4-toluene diisocyanate dropwise into component B under nitrogen protection, and recrystallizing to obtain component C in the form of light brown transparent crystals; S204, adding component C to the oil, and reacting at 80°C to obtain fluorocarbon resin.

9. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 8, characterized in that: The catalyst is any one of N,N-dimethylformyl, tetrahydrofuran and dibutyltin laurate.

10. The coating having both hydrophobic and oleophobic and anti-icing functions according to claim 8, characterized in that: The resin is any one of methyl methacrylate, ethyl acrylate and butyl acrylate.

Images