CN113308150A - High self-cleaning type super-slip anti-pollution flashover coating and preparation method thereof - Google Patents
High self-cleaning type super-slip anti-pollution flashover coating and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of coatings, and particularly relates to a high self-cleaning type super-slip anti-pollution flashover coating and a preparation method thereof. A high self-cleaning type super-slip anti-pollution flashover coating is characterized in that: is prepared from lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2The polytetrafluoroethylene PTFE and the silane coupling agent are prepared from the following raw materials in percentage by mass: 4-12% of lubricating oil, 10-15% of fluorocarbon resin, 68-80% of solvent and hydrophobic SiO21 to 6 percent of polytetrafluoroethylene and 1 percent of polytetrafluoroethylene5 percent of silane coupling agent and 0.2 to 1.5 percent of silane coupling agent. The coating formed by spraying the coating through the aerosol can has good self-cleaning property, super-lubricity, anti-pollution flashover property and anti-icing property; also has good corrosion resistance and aging resistance.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a high self-cleaning type super-slip anti-pollution flashover coating and a preparation method thereof.
Background
The insulator of the power transmission line is easy to generate pollution flashover under the condition that dirt exists, or ice flashover occurs under an ice coating environment, so that the safe operation of the power transmission line is seriously influenced, serious economic loss is caused by the pollution flashover and the ice flashover of the insulator every year, and great trouble is brought to the power industry. At present, room temperature vulcanized silicone Rubber (RTV) coating is adopted to coat insulators, but the anti-pollution flashover and anti-icing flashover effects of RTV are not ideal, and the pollution flashover and icing flashover events still frequently occur. The reason for causing flashover events is that the RTV coating is easy to accumulate dirt after long-time operation, and the dirt is remained on the surface of the coating to cause the increase of the conductivity of the coating; meanwhile, water drops on the surface of the RTV coating are not easy to roll off, the self-cleaning effect is poor, the coating is locally wetted after long-term erosion of rain, dew, frost, fog and snow, the leakage current is increased due to the wetted high-conductivity surface, and when the critical current value is reached or even exceeded, an electric arc penetrates through two stages and flashover is caused, so that the grounding power failure accident is caused. RTV insulators are more susceptible to flashover in coastal areas with high salinity or near power plants. In addition, the RTV coating insulator is easy to be iced under the condition of low-temperature freezing rain, chain ice bridges are easy to form among insulator strings, and ice flashover is easy to be induced on the wetted high-conductivity surface during ice melting. In recent years, a solution for forming an anti-pollution flashover coating by coating the surface of an insulator with a super-hydrophobic coating is made, wherein the static contact angle and the rolling angle of the super-hydrophobic coating are larger than 150 degrees and smaller than 10 degrees, and the self-cleaning effect can enable water drops on the surface to roll and wash away dirt, so that a certain anti-pollution flashover effect is achieved. However, the super-hydrophobic coating has a micro-nano coarse porous structure, so that the stability of the coating is poor, particularly after the coating is subjected to external rain erosion, wind erosion, sand erosion and icing, the micro-coarse structure is easy to damage, the low surface energy is also lost, and the coating fails. Most of super-hydrophobic coatings lose super-hydrophobicity after being operated outdoors for 3-6 months, and even gradually lose the super-hydrophobic property to be in a hydrophilic state, so that the coating insulator loses antifouling flashover resistance.
Therefore, a hydrophobic sliding type anti-pollution flashover coating with high self-cleaning property needs to be developed, the coating has good stability, the formed coating insulator has good self-cleaning property, and dirt is difficult to stay on the surface; the self-cleaning agent has the super-lubricity inspired by pitcher, namely the water-repellent level is high, the water drops have lower rolling angles, the sliding of the water drops can take away dirt, a good self-cleaning effect is achieved, and the anti-pollution flashover effect is realized; the ice coating prevention device also has a certain ice coating prevention effect, can reduce the ice coating amount and avoid the occurrence of ice flash events.
Disclosure of Invention
The invention aims to provide a high self-cleaning type super-slip anti-pollution flashover coating and a preparation method thereof, a single-component novel anti-pollution flashover coating is formed, and a coating formed by spraying the coating has good self-cleaning property, super-slip property, anti-pollution flashover property and anti-icing property; also has good corrosion resistance and aging resistance.
In order to achieve the purpose, the invention adopts the technical scheme that: a high self-cleaning type super-slip anti-pollution flashover coating is characterized in that: is prepared from lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2The polytetrafluoroethylene PTFE and the silane coupling agent are prepared from the following raw materials in percentage by mass: 4-12% of lubricating oil, 10-15% of fluorocarbon resin, 68-80% of solvent and hydrophobic SiO21-6%, 1-5% of polytetrafluoroethylene and 0.2-1.5% of silane coupling agent.
According to the technical scheme, the optimal mass percentage of the raw materials is as follows: 6.96-11.24% of lubricating oil, 11.24-12.6% of fluorocarbon resin, 71.16-77.2% of solvent, and hydrophobic SiO21.54-3%, 1.8-2.25% of polytetrafluoroethylene and 0.77-1.11% of silane coupling agent.
According to the technical scheme, the hydrophobic SiO2The preparation method comprises the following steps: according to SiO2The silane coupling agent comprises the following raw materials in percentage by mass: SiO 224-6% of SiO, 92.2-95% of alcohol aqueous solution and 0.6-1.8% of silane coupling agent2An alcohol aqueous solution and a silane coupling agent; mixing SiO2Stirring and dispersing in an alcohol water solution, and carrying out hydrolysis reaction with a silane coupling agent for 6-8 h to obtain hydrophobization modified SiO2Centrifuging, washing and drying the emulsion to obtain hydrophobic SiO2And then standby.
The alcohol is one or a mixture of several of methanol, ethanol, propanol or isopropanol in any proportion; the silane coupling agent is one or a mixture of several of hexamethyldisilazane, hexadecyl trimethoxy silane, perfluoro decyl trimethoxy silane or perfluoro octyl triethoxy silane according to any proportion.
According to the technical scheme, the preparation method of the high self-cleaning type super-smooth anti-pollution flashover coating is characterized by comprising the following steps:
(1) the weight percentage of each raw material is as follows: 4-12% of lubricating oil, 10-15% of fluorocarbon resin, 68-80% of solvent and hydrophobic SiO21-6 percent of polytetrafluoroethylene, 1-5 percent of silane coupling agent, and 0.2-1.5 percent of selected lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2Polytetrafluoroethylene and silane coupling agent for later use;
(2) adding lubricating oil into solvent, and adding hydrophobic SiO2Ultrasonically treating and uniformly stirring to form a mixed solution;
(3) sequentially adding fluorocarbon resin, polytetrafluoroethylene (PTFE particles) and a silane coupling agent into the mixed solution, and heating, ultrasonically treating and stirring at normal temperature or 40-50 ℃ to form uniform emulsion so as to obtain the high self-cleaning type super-slip anti-pollution flashover coating.
The power of the ultrasonic wave is 180W-200W, and the frequency is 40 Hz-60 Hz.
The stirring speed was 2000 rpm.
According to the technical scheme, the lubricating oil is a mixture of one or more of hydroxyl silicone oil, methyl silicone oil, micromolecular silicone oil and perfluoropolyether oil according to any proportion.
According to the technical scheme, the solvent is a mixture of one or more of ethyl acetate, butyl acetate, isoamyl acetate, butanone, cyclohexanone, toluene or xylene according to any proportion.
According to the technical scheme, the medium hydrophobic SiO2The grain diameter is 10 nm-1000 nm.
According to the technical scheme, the silane coupling agent is a mixture of one or more of perfluorooctyl triethoxysilane, perfluorodecyl trimethoxysilane, octyl triethoxysilane and hexadecyl trimethoxysilane according to any proportion.
According to the technical scheme, the small molecular silicone oil is silicone oil with the viscosity lower than 150 cst.
According to the technical scheme, the application of the high self-cleaning type super-slip anti-pollution flashover coating is characterized in that: the weight ratio of the high self-cleaning type super-smooth anti-pollution flashover coating to the propellant is 1: and 0.4-0.6, filling the high self-cleaning type super-slip anti-pollution flashover coating and the propellant through an aerosol can, spraying the high self-cleaning type super-slip anti-pollution flashover coating and the propellant onto the surface of the power transmission line insulator, wherein the spraying pressure is 0.5-0.7MPa, and forming a high self-cleaning type anti-pollution flashover super-slip coating on the surface of the power transmission line insulator. The propellant is one or a mixture of several of dimethyl ether, butane and difluoroethane in any proportion.
Brushing, spraying, dipping and the like are conventional construction methods. The invention adopts the mode of aerosol can spraying, and has the characteristics of convenience and light weight.
The high self-cleaning property means that the coating is coated on a base material and cured, and the self-cleaning grade is 1 grade by adopting a glass bead method for testing, so that the coating has good self-cleaning property. The anti-pollution flashover property refers to that the coating insulator is smeared (the salt density is 0.1 mg/cm)2Ash density 0.5mg/cm2Pollution degree of) is tested, the ratio of flashover voltage of the insulator to flashover voltage of the bare insulator is more than 2.0, and the insulator has pollution flashover resistance. The super-lubricity refers to that the water spray of the coating is classified into HC1 grade, the rolling angle of the coating to water drops is less than 10 degrees, the coating has a good self-cleaning effect on dirt, and the effects of preventing pollution flashover and ice coating can be achieved. The corrosion resistance means that the coating does not fall off, peel, foam and discolor after being soaked in 3 percent of acid, alkali and salt for 1 day. The aging resistance means that the coating does not have the phenomena of peeling, cracking, corrosion and shedding after being subjected to 1000h ultraviolet aging and 1000h salt spray aging.
The long-acting super-lubricity realization process comprises the following steps: the novel anti-pollution flashover coating surface layer and the interior contain a large amount of lubricating oil with low surface energy, the lubricating oil on the surface layer serves as the lubricating layer, and meanwhile, the coating has certain adsorption and fixation effects on the lubricating layer due to intermolecular force, so that the coating keeps good stability. When the water drops contact the inclined (only the inclined angle is less than 10 degrees) ultra-smooth coating surface, the water drops can automatically slide off; lubricating oil on the surface layer of the coating is gradually consumed after long-time water drop flushing, but the lubricating oil in the coating can gradually migrate to the surface to supplement the lubricating layer on the surface layer, so that the self-supplementing function is realized, and the coating can maintain lasting water drop slippage. Therefore, the high self-cleaning type super-smooth anti-pollution flashover coating provided by the invention has long-acting hydrophobic slippage.
The invention has the beneficial effects that: the prepared coating is sprayed to the surface of the insulator by adopting an aerosol can, the coating can be quickly self-dried and cured at normal temperature, and the formed coating has good self-cleaning property, and the self-cleaning grade is 1 grade; the water-repellent self-cleaning agent has good super-lubricity, the hydrophobic grade is HC1 grade, the rolling angle is lower than 10 degrees, and water drops slide and take away dirt so that the water drops have good self-cleaning effect; the coating insulator has anti-pollution flashover performance, and the ratio of flashover voltage of the coated insulator to that of the exposed insulator after being smeared is more than 2.0; the coating has good ice-coating-preventing performance, and the ice coating amount is less than that of a bare insulator by more than 50 percent; the paint also has good chemical corrosion resistance and aging resistance, and does not fall off, peel, bubble or change color after being soaked in 3% acid, alkali and salt for 1d, and does not fall off, peel, crack, change color or corrode after being aged by 1000h ultraviolet and 1000h salt fog. The novel anti-pollution flashover coating has simple and feasible preparation method; the coating is filled in an aerosol can, so that the spraying construction is simple and convenient, and time and labor are saved; and the anti-pollution flashover coating makes up the defects of strength and durability of the super-hydrophobic coating, and can play the roles of long-acting anti-pollution flashover and anti-icing flashover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
Example 1
A high-self-cleaning super-smooth anti-pollution flashover paint is prepared from hydroxy silicone oil (lubricating oil), methyl silicone oil (lubricating oil), small-molecular silicone oil (lubricating oil), fluorocarbon resin, butyl acetate (solvent), and hydrophobic SiO2The polytetrafluoroethylene PTFE and the perfluorodecyl trimethoxy silane (silane coupling agent) are prepared from the following raw materials in percentage by mass: 3.6 percent of hydroxyl silicone oil (lubricating oil), 3.6 percent of methyl silicone oil (lubricating oil), 3.6 percent of small molecular silicone oil (lubricating oil), 12.6 percent of fluorocarbon resin, 71.9 percent of butyl acetate (solvent), hydrophobic SiO21.8% of polytetrafluoroethylene PTFE, 1.8% of perfluorodecyltrimethoxysilane (silane coupling agent), and 1.1%. The small molecular silicone oil is silicone oil with the viscosity of less than 150 cst.
According to the technical scheme, the hydrophobic SiO2The preparation method comprises the following steps: according to SiO2The alcohol-water solution (the mass ratio of alcohol to water is 1:1) and the silane coupling agent are as follows by mass percent: SiO 226 percent of alcohol-water solution 92.2 percent and 1.8 percent of silane coupling agent, and SiO is weighed2An alcohol aqueous solution and a silane coupling agent; mixing SiO2Stirring and dispersing in alcohol water solution, and carrying out hydrolysis reaction with silane coupling agent for 6h to obtain hydrophobic modified SiO2Centrifuging, washing and drying the emulsion to obtain hydrophobic SiO2And then standby. The alcohol is methanol; the silane coupling agent is hexamethyldisilazane.
The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating comprises the following steps:
(1) according to the mixture ratio of the raw materials, selecting lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2Polytetrafluoroethylene PTFE and a silane coupling agent for later use;
(2) adding lubricating oil into solvent, and adding hydrophobic SiO2Ultrasonically treating and uniformly stirring to form a mixed solution;
(3) sequentially adding fluorocarbon resin, polytetrafluoroethylene (PTFE particles) and a silane coupling agent into the mixed solution, and heating, ultrasonically stirring and stirring at normal temperature or 40 ℃ for 15-20 min to form uniform emulsion so as to obtain the high self-cleaning type super-slip anti-pollution flashover coating.
The power of the ultrasonic wave is 180W-200W, and the frequency is 40 Hz-60 Hz; the stirring speed was 2000 rpm.
The application of the high self-cleaning type super-slip anti-pollution flashover coating comprises the following steps of 1: 0.4-0.6, filling the high self-cleaning type super-slip anti-pollution flashover coating and the propellant through an aerosol can, spraying the high self-cleaning type super-slip anti-pollution flashover coating and the propellant onto the surface of the power transmission line insulator, wherein the spraying pressure is 0.5-0.7MPa, and the high self-cleaning type super-slip anti-pollution flashover coating is formed on the surface of the power transmission line insulator.
Example 2
A high-self-cleaning super-smooth anti-pollution flashover paint is prepared from hydroxy silicone oil (lubricating oil), methyl silicone oil (lubricating oil), fluorocarbon resin, ethyl acetate (solvent), butyl acetate (solvent) and hydrophobic SiO2The polytetrafluoroethylene PTFE and the perfluorodecyl trimethoxy silane (silane coupling agent) are prepared from the following raw materials in percentage by mass: 3.1% of hydroxyl silicone oil (lubricating oil), 3.86% of methyl silicone oil (lubricating oil), 11.6% of fluorocarbon resin, 38.6% of ethyl acetate (solvent), 38.6% of butyl acetate (solvent) and hydrophobic SiO21.54% for polytetrafluoroethylene PTFE, 1.93% for polytetrafluoroethylene PTFE, and 0.77% for perfluorodecyltrimethoxysilane (silane coupling agent).
According to the technical scheme, the hydrophobic SiO2The preparation method comprises the following steps: according to SiO2The alcohol-water solution (the mass ratio of alcohol to water is 2:1) and the silane coupling agent are as follows by mass percent: SiO 225 percent of alcohol aqueous solution 94 percent and 1 percent of silane coupling agent, and SiO is weighed2An alcohol aqueous solution and a silane coupling agent; mixing SiO2Stirring and dispersing in alcohol water solution, and carrying out hydrolysis reaction with silane coupling agent for 7h to obtain hydrophobic modified SiO2Centrifuging, washing and drying the emulsion to obtain hydrophobic SiO2And then standby. The alcohol is ethanol; the silane coupling agent is hexadecyl trimethoxy silane.
The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating comprises the following steps:
(1) according to the mixture ratio of the raw materials, selecting lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2Polytetrafluoroethylene PTFE and a silane coupling agent for later use;
(2) adding lubricating oil into solvent, and adding hydrophobic SiO2Ultrasonically treating and uniformly stirring to form a mixed solution;
(3) sequentially adding fluorocarbon resin, polytetrafluoroethylene (PTFE particles) and a silane coupling agent into the mixed solution, and heating, ultrasonically stirring and stirring at normal temperature or 45 ℃ for 15-20 min to form uniform emulsion so as to obtain the high self-cleaning type super-slip anti-pollution flashover coating.
The power of the ultrasonic wave is 180W-200W, and the frequency is 40 Hz-60 Hz; the stirring speed was 2000 rpm.
The application of the high self-cleaning type super-slip anti-pollution flashover coating comprises the following steps of 1: 0.4-0.6, filling the high self-cleaning type super-slip anti-pollution flashover coating and the propellant through an aerosol can, spraying the high self-cleaning type super-slip anti-pollution flashover coating and the propellant onto the surface of the power transmission line insulator, wherein the spraying pressure is 0.5-0.7MPa, and the high self-cleaning type super-slip anti-pollution flashover coating is formed on the surface of the power transmission line insulator.
Example 3
A high-self-cleaning super-smooth anti-pollution flashover paint is prepared from hydroxy silicone oil (lubricating oil), small-molecular silicone oil (lubricating oil), fluorocarbon resin, xylene (solvent), butyl acetate (solvent), and hydrophobic SiO2The polytetrafluoroethylene PTFE and the silane coupling agent are prepared from the following raw materials in percentage by mass: 9.34 percent of hydroxyl silicone oil (lubricating oil), 1.9 percent of micromolecular silicone oil (lubricating oil), 11.24 percent of fluorocarbon resin, 22.47 percent of dimethylbenzene (solvent), 48.69 percent of butyl acetate (solvent), and hydrophobic SiO23%, 2.25% and 1.11% of a silane coupling agent.
The small molecular silicone oil is silicone oil with the viscosity of less than 150 cst.
The hydrophobic SiO2The preparation method comprises the following steps: according to SiO2The alcohol-water solution (the mass ratio of alcohol to water is 3:1) and the silane coupling agent are as follows by mass percent: SiO 224 percent, 95 percent of alcohol aqueous solution and 1.0 percent of silane coupling agent,weighing SiO2An alcohol aqueous solution and a silane coupling agent; mixing SiO2Stirring and dispersing in alcohol water solution, and carrying out hydrolysis reaction with silane coupling agent for 8h to obtain hydrophobic modified SiO2Centrifuging, washing and drying the emulsion to obtain hydrophobic SiO2And then standby. The alcohol is a mixture of propanol and isopropanol, and the mass of the propanol and the isopropanol respectively accounts for 1/2; the silane coupling agent is a mixture of perfluorodecyl trimethoxy silane and perfluorooctyl triethoxy silane, and the mass of the perfluorodecyl trimethoxy silane and the mass of the perfluorooctyl triethoxy silane respectively account for 1/2.
The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating comprises the following steps:
(1) according to the raw material proportion, selecting lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2Polytetrafluoroethylene and silane coupling agent for later use;
(2) adding lubricating oil into solvent, and adding hydrophobic SiO2Ultrasonically treating and uniformly stirring to form a mixed solution;
(3) sequentially adding fluorocarbon resin, polytetrafluoroethylene (PTFE particles) and a silane coupling agent into the mixed solution, and heating, ultrasonically stirring and stirring at normal temperature or 50 ℃ for 15-20 min to form uniform emulsion so as to obtain the high self-cleaning type super-slip anti-pollution flashover coating.
The power of the ultrasonic wave is 180W-200W, and the frequency is 40 Hz-60 Hz. The stirring speed was 2000 rpm.
The application of the high self-cleaning type super-slip anti-pollution flashover coating comprises the following steps of 1: 0.4-0.6, filling the high self-cleaning type super-slip anti-pollution flashover coating and the propellant through an aerosol can, spraying the high self-cleaning type super-slip anti-pollution flashover coating and the propellant onto the surface of the power transmission line insulator, wherein the spraying pressure is 0.5-0.7MPa, and the high self-cleaning type super-slip anti-pollution flashover coating is formed on the surface of the power transmission line insulator.
Comparative example 1
The preparation method of the super-hydrophobic coating comprises the following steps:
firstly, 3.5 parts of fluorocarbon resin is added into 20 parts of butyl acetate, and then 1.3 parts of hydrophobic SiO is added2Ultrasonically stirring uniformly; and then 0.5 part of PTFE particles and 0.3 part of perfluorodecyl trimethoxy silane are added into the solution, and the mixture is heated at 40 ℃, subjected to ultrasonic treatment and stirred for 15-20 min to form a semitransparent emulsion, namely the super-hydrophobic coating. And filling the coating through an aerosol can, and spraying the coating on the surface of the insulator to form the super-hydrophobic coating with a contact angle of 153 degrees and a rolling angle of 7.3 degrees.
Comparative example 2
The preparation method of the super-hydrophobic coating comprises the following steps:
firstly, 3 parts of fluorocarbon resin is added into a solvent mixed by 6 parts of dimethylbenzene and 13 parts of butyl acetate, and then 1.0 part of hydrophobic SiO is added2Ultrasonically treating and uniformly stirring; and then adding 0.8 part of PTFE particles and 0.3 part of hexadecyl trimethoxy silane, and carrying out ultrasonic treatment and stirring for 15-20 min at normal temperature to form emulsion, namely the super-hydrophobic coating. The coating is coated on the surface of the insulator in an aerosol can spraying mode to form a super-hydrophobic coating with a contact angle of 154 degrees and a rolling angle of 7.6 degrees.
The results of the performance tests of the porcelain insulator coatings provided in examples 1-3 of the present invention and comparative examples 1-2 are shown in the following table:
table 1 performance test results of coated insulators
Note: the hydrophobic HC1 grade is higher than the HC2 grade; the adhesion force is higher than grade 2 at level 1; a lower roll angle indicates that the water droplet slips more easily.
TABLE 2 outdoor running test of coated insulators
Note: the hydrophobic grade is HC1 to HC7, the hydrophobic effect is gradually reduced.
From the above table, the insulator coating formed by the high self-cleaning type super-smooth anti-pollution flashover coating provided by the invention has the characteristics of super-smoothness (super-lubricity), high self-cleaning property, corrosion resistance and weather resistance, and the outdoor service life of the insulator coating is far longer than that of the corresponding super-hydrophobic coating, so that the insulator coating has durable durability. Dust on the surface of the ultra-smooth anti-pollution flashover coating insulator cannot be attached, and water drops on the surface of the coating can take away the dust on the surface, so that the high self-cleaning type ultra-smooth anti-pollution flashover coating insulator provided by the invention has the technical characteristics of anti-pollution flashover, anti-icing flashover (anti-icing property) and long service life of the coating.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A high self-cleaning type super-slip anti-pollution flashover coating is characterized in that: is prepared from lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2The polytetrafluoroethylene PTFE and the silane coupling agent are prepared from the following raw materials in percentage by mass: 4-12% of lubricating oil, 10-15% of fluorocarbon resin, 68-80% of solvent and hydrophobic SiO21-6%, 1-5% of polytetrafluoroethylene and 0.2-1.5% of silane coupling agent.
2. The high self-cleaning type super-slip anti-fouling flashover coating material as claimed in claim 1, wherein: the optimal mass percentage of each raw material is as follows: 6.96-11.24% of lubricating oil, 11.24-12.6% of fluorocarbon resin, 71.16-77.2% of solvent, and hydrophobic SiO21.54-3%, 1.8-2.25% of polytetrafluoroethylene and 0.77-1.11% of silane coupling agent.
3. According to claim1 or 2, the high self-cleaning type super-smooth anti-pollution flashover coating is characterized in that: the hydrophobic SiO2The preparation method comprises the following steps: according to SiO2The alcohol-water solution and the silane coupling agent are prepared from the following raw materials in percentage by mass: SiO 224-6% of an alcohol-water solution, 92.2-95% of an alcohol-water solution and 0.6-1.8% of a silane coupling agent, wherein the mass ratio of alcohol to water is 1-3: 1, and SiO is weighed2An alcohol aqueous solution and a silane coupling agent; mixing SiO2Stirring and dispersing in an alcohol water solution, and carrying out hydrolysis reaction with a silane coupling agent for 6-8 h to obtain hydrophobization modified SiO2Centrifuging, washing and drying the emulsion to obtain hydrophobic SiO2And then standby.
4. The high self-cleaning type super-slip anti-fouling flashover coating material as claimed in claim 3, wherein: the alcohol is one or a mixture of several of methanol, ethanol, propanol or isopropanol in any proportion; the silane coupling agent is one or a mixture of several of hexamethyldisilazane, hexadecyl trimethoxy silane, perfluoro decyl trimethoxy silane or perfluoro octyl triethoxy silane according to any proportion.
5. The method for preparing the high self-cleaning type super-slip anti-pollution flashover coating according to claim 1, which is characterized by comprising the following steps:
(1) the weight percentage of each raw material is as follows: 4-12% of lubricating oil, 10-15% of fluorocarbon resin, 68-80% of solvent and hydrophobic SiO21-6 percent of polytetrafluoroethylene, 1-5 percent of silane coupling agent, and 0.2-1.5 percent of selected lubricating oil, fluorocarbon resin, solvent and hydrophobic SiO2Polytetrafluoroethylene and silane coupling agent for later use;
(2) adding lubricating oil into solvent, and adding hydrophobic SiO2Ultrasonically treating and uniformly stirring to form a mixed solution;
(3) sequentially adding fluorocarbon resin, polytetrafluoroethylene and a silane coupling agent into the mixed solution, and heating, ultrasonically treating and stirring at normal temperature or 40-50 ℃ to form uniform emulsion so as to obtain the high self-cleaning type super-slip anti-pollution flashover coating.
6. The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating as claimed in claim 5, wherein the preparation method comprises the following steps: the lubricating oil is a mixture of one or more of hydroxyl silicone oil, methyl silicone oil, micromolecular silicone oil and perfluoropolyether oil according to any proportion.
7. The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating as claimed in claim 6, wherein the preparation method comprises the following steps: the small molecular silicone oil is silicone oil with the viscosity of less than 150 cst.
8. The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating as claimed in claim 5, wherein the preparation method comprises the following steps: the solvent is one or a mixture of several of ethyl acetate, butyl acetate, isoamyl acetate, butanone, cyclohexanone, toluene or xylene according to any proportion.
9. The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating as claimed in claim 5, wherein the preparation method comprises the following steps: the middle hydrophobic SiO2The grain diameter is 10 nm-1000 nm.
10. The preparation method of the high self-cleaning type super-slip anti-pollution flashover coating as claimed in claim 5, wherein the preparation method comprises the following steps: the silane coupling agent is one or a mixture of several of perfluorooctyl triethoxysilane, perfluorodecyl trimethoxysilane, octyl triethoxysilane and hexadecyl trimethoxysilane according to any proportion.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114517053A (en) * | 2022-03-17 | 2022-05-20 | 北京世纪航凯电力科技股份有限公司 | High-hydrophobicity anti-pollution flashover coating and preparation method thereof |
| CN115340822A (en) * | 2022-09-24 | 2022-11-15 | 中京新材料科技(河北)有限公司 | Ultra-smooth self-cleaning coating and preparation method thereof |
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Application publication date: 20210827 |