CN115074023A - Self-cleaning anti-pollution flashover coating with long weather resistance and preparation method thereof - Google Patents

Self-cleaning anti-pollution flashover coating with long weather resistance and preparation method thereof Download PDF

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CN115074023A
CN115074023A CN202210808966.2A CN202210808966A CN115074023A CN 115074023 A CN115074023 A CN 115074023A CN 202210808966 A CN202210808966 A CN 202210808966A CN 115074023 A CN115074023 A CN 115074023A
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彭为民
谢熙威
赵悦菊
石金彪
王晓慧
郭淼
汪笑龙
郑永立
张五福
赵春风
陈强
郭渊
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Beijing Guodian Futong Science and Technology Development Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/28—Nitrogen-containing compounds
    • C08K2003/282—Binary compounds of nitrogen with aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds
    • C08K2003/382—Boron-containing compounds and nitrogen
    • C08K2003/385—Binary compounds of nitrogen with boron
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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Abstract

The invention discloses a self-cleaning anti-pollution flashover coating with long weather resistance and a preparation method thereof, wherein the coating comprises the following components in parts by weight: 70-100 parts of polysiloxane, 15-60 parts of nano filler, 0.01-0.04 part of catalyst, 40-80 parts of benzene-free alkane solvent, 8-15 parts of curing agent, 5-10 parts of coupling agent and 5-20 parts of adhesion promoter; the preparation method comprises the following steps: mixing a coupling agent with ethanol for alcoholysis; adding the nano-filler into the coupling agent after alcoholysis to obtain a modified nano-filler; fully dissolving polysiloxane in an alkane solvent, adding the modified nano filler, and stirring to obtain a primary mixed rubber; and adding a curing agent, a catalyst and an adhesion promoter into the primary mixed glue, stirring to obtain a composite glue, filtering, and drying to obtain the coating. The coating disclosed by the invention is good in roughness and wear resistance, has long-term weather resistance, and is expected to be applied to a power system.

Description

Self-cleaning anti-pollution flashover coating with long weather resistance and preparation method thereof
Technical Field
The invention relates to an anti-pollution flashover coating and a preparation method thereof, in particular to a self-cleaning anti-pollution flashover coating with long weather resistance and a preparation method thereof.
Background
With the continuous development of new materials, the demand of power systems for new materials is also increasing. Especially, the application of the new nano material in power equipment is wider, and the new nano material has more requirements in various aspects such as insulating coatings, batteries, new energy sources and the like. At present, electric power insulation equipment is easy to generate the phenomena of electric leakage and flashover under extremely severe and humid environments. The traditional method is mainly to coat RTV anti-pollution flashover coating on insulating equipment, but the service life of the coating is only more than ten years, and the application requirement of electric insulating equipment cannot be met. After the surface of the insulating layer reaches a certain service life, a conductive film is easily formed on the insulating surface, so that the surface conductivity is increased, and the insulating property is reduced. Because the flashover accident has a great influence on the power system, even the electricity utilization problem of residents can be influenced, huge economic loss and social influence can be brought to the society inevitably.
At present, methods such as equipment replacement, manual cleaning, automatic equipment cleaning and the like are mainly adopted for protection measures of insulating equipment, and a large amount of manpower, material resources and financial resources are consumed. Under special conditions, the power supply is required to be powered off to carry out field construction, and great difficulty is brought to the maintenance of the power insulation equipment. In addition, the corrosion of the wet environment is faced, an optimal scheme for dealing with the corrosion still does not exist, and a series of serious problems such as electric leakage and pollution accumulation of power equipment are always faced. In addition, the existing self-cleaning coating has poor adhesive force and low weather resistance, is easy to damage when placed in a severe environment, has a complex construction process and needs high-temperature curing.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a self-cleaning anti-pollution flashover coating with good roughness and wear resistance and long weather resistance; the invention also aims to provide a preparation method of the self-cleaning anti-pollution flashover coating.
The technical scheme is as follows: the self-cleaning anti-pollution flashover coating with long weather resistance comprises the following components in parts by weight: 70-100 parts of polysiloxane with viscosity less than 1000cs, 15-60 parts of nano filler, 0.01-0.04 part of catalyst, 40-80 parts of benzene-free alkane solvent, 8-15 parts of curing agent, 5-10 parts of coupling agent with surface energy less than 30mN/m and 5-20 parts of adhesion promoter.
Preferably, the polysiloxane is one or both of polysiloxane or hydroxyl-terminated polysiloxane.
Preferably, the coupling agent is one or more of perfluorodecyltriethoxysilane, perfluorodecyltrimethoxysilane, perfluorooctyltriethoxysilane, perfluorooctyltrimethoxysilane, perfluorooctylmethyldimethoxysilane, tridecafluorooctyltriethoxysilane.
Preferably, the nano filler is one or more of nano titanium dioxide, nano aluminum hydroxide, nano white carbon black, nano silicon carbide, nano aluminum nitride, nano boron nitride and nano calcium carbonate.
Preferably, the adhesion promoter is one or more of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, or n-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane.
Preferably, the catalyst is one or more of a platinum catalyst, dibutyltin dilaurate, stannous octoate, titanate, or tetramethylammonium hydroxide.
Preferably, the curing agent is one or more of methyltributanone oxime silane, vinyl triacetoxysilane, gamma- (2, 3-epoxypropyl) propyl methyldimethoxysilane or magnesium chloride.
The preparation method of the self-cleaning anti-pollution flashover coating comprises the following steps:
(1) mixing coupling agent and ethanol, stirring, standing for alcoholysis;
(2) adding the coupling agent after alcoholysis into a nano filler to obtain a modified nano filler;
(3) fully dissolving polysiloxane in a benzene-free alkane solvent, stirring to completely disperse the polysiloxane, adding the modified nano filler, and stirring at room temperature to obtain a primary mixed rubber;
(4) and adding a curing agent, a catalyst and an adhesion promoter into the primary mixed glue, stirring to obtain a composite glue, and finally filtering and drying to obtain the super-hydrophobic anti-pollution flashover coating.
Preferably, the volume ratio of the coupling agent to ethanol in step (1) is 1: 2-1: 20, the temperature of the environment for placing is 35-45 ℃, and the time for placing is 1-2 h.
Preferably, the stirring speed in the steps (3) and (4) is 100-120 r/min, the stirring time of the polysiloxane dissolved in the alkane solvent in the step (3) is 3-5 min, and the stirring time after the nano filler is added is 5-10 min; and (4) stirring for 3-5 min.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: (1) the self-cleaning performance of the coating has longer weather resistance, and the service life of the self-cleaning coating can reach more than ten years, so that the protective performance of the electric insulation equipment is consolidated; (2) the coating greatly improves the surface adhesive force of the traditional self-cleaning coating, has higher roughness and better wear resistance compared with the coating before modification, and can improve the application life of the coating; (3) the construction condition is simple, the curing can be carried out at room temperature, and the cost is low.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
A self-cleaning anti-pollution flashover coating comprises the following components in parts by weight: 70 parts of hydroxyl-terminated polydimethylsiloxane, 5 parts of nano titanium dioxide, 5 parts of nano white carbon black, 5 parts of nano aluminum hydroxide, 0.01 part of dibutyltin dilaurate, 40 parts of alkane solvent (without benzene), 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyl triethoxysilane, 12 parts of gamma-glycidyl ether oxypropyl trimethoxysilane and 5 parts of perfluorodecyl triethoxysilane (the viscosity of polysiloxane is less than 1000cs, and the surface energy of a coupling agent is less than 30 mN/m).
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) mixing perfluorodecyl triethoxysilane with ethanol in a volume ratio of 1: 2, stirring, and placing in a baking oven at 45 ℃ for 2 hours for alcoholysis;
(2) adding fillers such as nano white carbon black, nano titanium dioxide, nano aluminum hydroxide and the like into the alcoholyzed perfluorodecyl triethoxysilane to obtain modified nano fillers;
(3) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent, stirring for 5min to completely disperse the hydroxyl-terminated polydimethylsiloxane, adding a modified nano filler, and stirring for 10min at room temperature in a high-speed dispersion machine at a speed of 120r/min to obtain a primary mixed rubber;
(4) and adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying to obtain the self-cleaning anti-pollution flashover coating.
Example 2
A self-cleaning anti-pollution flashover coating comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 10 parts of nano titanium dioxide, 40 parts of nano white carbon black, 10 parts of nano aluminum hydroxide, 0.04 part of dibutyltin dilaurate, 80 parts of alkane solvent (without benzene), 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyl triethoxysilane, 12 parts of gamma-glycidyl ether oxypropyl trimethoxysilane and 5 parts of perfluorodecyl triethoxysilane (the viscosity of polysiloxane is less than 1000cs, and the surface energy of a coupling agent is less than 30 mN/m).
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) mixing perfluorodecyl triethoxysilane with ethanol in a volume ratio of 1: 20, stirring, and placing in a baking oven at 45 ℃ for 2h for alcoholysis;
(2) adding fillers such as nano white carbon black, nano titanium dioxide, nano aluminum hydroxide and the like into the alcoholyzed perfluorodecyl triethoxysilane to obtain modified nano fillers;
(3) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent, stirring for 5min to completely disperse the hydroxyl-terminated polydimethylsiloxane, adding a modified nano filler, and stirring for 10min at room temperature in a high-speed dispersion machine at a speed of 120r/min to obtain a primary mixed rubber;
(4) and adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying to obtain the self-cleaning anti-pollution flashover coating.
Example 3
A self-cleaning anti-pollution flashover coating comprises the following components in parts by weight: 85 parts of hydroxyl-terminated polydimethylsiloxane, 5 parts of nano titanium dioxide, 25 parts of nano white carbon black, 10 parts of nano aluminum hydroxide, 0.03 part of dibutyltin dilaurate, 60 parts of alkane solvent (without benzene), 0.3 part of iron oxide red, 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyl triethoxysilane, 12 parts of gamma-glycidyl ether oxypropyl trimethoxysilane and 5 parts of perfluorodecyl triethoxysilane (the viscosity of polysiloxane is less than 1000cs, and the surface energy of a coupling agent is less than 30 mN/m).
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) mixing perfluorodecyl triethoxysilane with ethanol in a volume ratio of 1: 5, stirring, and placing in a baking oven at 45 ℃ for 2h for alcoholysis;
(2) adding fillers such as nano white carbon black, nano titanium dioxide, nano aluminum hydroxide and the like into the alcoholyzed perfluorodecyl triethoxysilane to obtain modified nano fillers;
(3) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent, stirring for 5min to completely disperse the hydroxyl-terminated polydimethylsiloxane, adding a modified nano filler, and stirring for 10min at room temperature in a high-speed dispersion machine at a speed of 120r/min to obtain a primary mixed rubber;
(4) and adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying to obtain the self-cleaning anti-pollution flashover coating.
Example 4
A self-cleaning anti-pollution flashover coating comprises the following components in parts by weight: 80 parts of hydroxyl-terminated polydimethylsiloxane, 5 parts of nano titanium dioxide, 30 parts of nano white carbon black, 5 parts of nano aluminum hydroxide, 5 parts of nano aluminum nitride, 5 parts of nano boron nitride, 0.04 part of dibutyltin dilaurate, 40 parts of alkane solvent (without benzene), 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyltriethoxysilane, 12 parts of gamma-glycidyl ether oxypropyl trimethoxysilane and 10 parts of perfluorodecyl triethoxysilane (the viscosity of polysiloxane is less than 1000cs, and the surface energy of a coupling agent is less than 30 mN/m).
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) mixing perfluorodecyl triethoxysilane with ethanol in a volume ratio of 1: 5, stirring, and placing in a baking oven at 45 ℃ for 2h for alcoholysis;
(2) adding fillers such as nano white carbon black, nano titanium dioxide, nano aluminum hydroxide, nano aluminum nitride, nano boron nitride and the like into the alcoholyzed perfluorodecyl triethoxysilane to obtain a modified nano filler;
(3) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent (containing no benzene), stirring for 5min to completely disperse the dimethyl siloxane, adding a modified nano filler, and stirring for 10min at room temperature in a high-speed dispersion machine at a speed of 120r/min to obtain a primary mixed rubber;
(4) and adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying to obtain the self-cleaning anti-pollution flashover coating.
Example 5
A self-cleaning anti-pollution flashover coating comprises the following components in parts by weight: 80 parts of hydroxyl-terminated polydimethylsiloxane, 25 parts of nano white carbon black, 15 parts of nano aluminum hydroxide, 10 parts of nano aluminum nitride, 10 parts of nano boron nitride, 0.01 part of dibutyltin dilaurate, 50 parts of alkane solvent (containing no benzene), 15 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 6 parts of gamma-aminopropyl triethoxysilane, 14 parts of gamma-glycidyl ether oxypropyl trimethoxysilane and 10 parts of perfluorodecyl triethoxysilane (the viscosity of polysiloxane is less than 1000cs, and the surface energy of a coupling agent is less than 30 mN/m).
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) mixing perfluorodecyl triethoxysilane with ethanol in a volume ratio of 1: 5, stirring, and placing in a baking oven at 45 ℃ for 2h for alcoholysis;
(2) adding fillers such as nano white carbon black, nano aluminum nitride, nano boron nitride, nano aluminum hydroxide and the like into the alcoholyzed perfluorodecyl triethoxysilane to obtain a modified nano filler;
(3) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent (containing no benzene), stirring for 5min to completely disperse the hydroxyl-terminated polydimethylsiloxane, adding a modified nano filler, and stirring for 10min at room temperature in a high-speed dispersion machine at a speed of 120r/min to obtain a primary mixed rubber;
(4) and adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying to obtain the self-cleaning anti-pollution flashover coating.
Comparative example 1
The anti-pollution flashover coating is characterized by comprising the following components in parts by weight: 70 parts of hydroxyl-terminated polydimethylsiloxane, 5 parts of nano titanium dioxide, 5 parts of nano white carbon black, 5 parts of nano aluminum hydroxide, 0.01 part of dibutyltin dilaurate, 40 parts of alkane solvent (containing no benzene), 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyltriethoxysilane and 12 parts of gamma-glycidyl ether oxypropyl trimethoxysilane.
The anti-pollution flashover coating is prepared by the following preparation method:
(1) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent (containing no benzene), stirring for 5min to completely disperse the hydroxyl-terminated polydimethylsiloxane, adding nano titanium dioxide, nano white carbon black and nano aluminum hydroxide filler, and stirring for 10min at room temperature in a high-speed dispersion machine at the speed of 120r/min to obtain a primary mixed rubber;
(2) adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying.
Comparative example 2
The anti-pollution flashover coating is characterized by comprising the following components in parts by weight: 70 parts of hydroxyl-terminated polydimethylsiloxane, 30 parts of nano white carbon black, 0.01 part of dibutyltin dilaurate, 40 parts of alkane solvent (containing no benzene), 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyltriethoxysilane, 12 parts of gamma-glycidoxypropyltrimethoxysilane and 5 parts of perfluorodecyltriethoxysilane.
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) fully dissolving hydroxyl-terminated polydimethylsiloxane into an alkane solvent, stirring for 5min to completely disperse the hydroxyl-terminated polydimethylsiloxane, adding nano white carbon black, and stirring for 10min at room temperature in a high-speed dispersion machine at the speed of 120r/min to obtain a primary mixed gel;
(2) and (3) adding auxiliaries such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane and the like into the primarily mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying.
Comparative example 3
The anti-pollution flashover coating is characterized by comprising the following components in parts by weight: 70 parts of hydroxyl-terminated polydimethylsiloxane, 0.01 part of dibutyltin dilaurate, 40 parts of solvent (containing benzene), 10 parts of gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, 4 parts of gamma-aminopropyl triethoxysilane, 12 parts of gamma-glycidyl ether oxypropyl trimethoxysilane and 5 parts of perfluorodecyl triethoxysilane.
The self-cleaning anti-pollution flashover coating is prepared by the following preparation method:
(1) fully dissolving hydroxyl-terminated polydimethylsiloxane into a solvent (containing benzene), and stirring for 10min at room temperature in a high-speed dispersion machine at the speed of 120r/min to obtain a primary mixed rubber;
(2) adding auxiliary agents such as gamma- (2, 3-epoxypropyl) propyl methyl dimethoxysilane, dibutyltin dilaurate, gamma-aminopropyl triethoxysilane, gamma-glycidyl ether oxypropyl trimethoxysilane and the like into the primary mixed glue, stirring for 5min to obtain a composite glue, and finally filtering and drying.
The experimental data for the examples and comparative examples are shown in table 1.
TABLE 1 Experimental data for examples and comparative examples
Figure BDA0003739680590000061

Claims (10)

1. The self-cleaning anti-pollution flashover coating with long weather resistance is characterized by comprising the following components in parts by weight: 70-100 parts of polysiloxane with the viscosity of less than 1000cs, 15-60 parts of nano filler, 0.01-0.04 part of catalyst, 40-80 parts of benzene-free alkane solvent, 8-15 parts of curing agent, 5-10 parts of coupling agent with the surface energy of less than 30mN/m and 5-20 parts of adhesion promoter.
2. The self-cleaning anti-fouling flashover coating of claim 1, wherein the polysiloxane is one or both of a polysiloxane or a hydroxyl terminated polysiloxane.
3. The self-cleaning anti-fouling flashover coating of claim 1, wherein the coupling agent is one or more of perfluorodecyltriethoxysilane, perfluorodecyltrimethoxysilane, perfluorooctyltriethoxysilane, perfluorooctyltrimethoxysilane, perfluorooctylmethyldimethoxysilane, tridecafluorooctyltriethoxysilane.
4. The self-cleaning anti-pollution flashover coating material as claimed in claim 1, wherein the nano filler is one or more of nano titanium dioxide, nano aluminum hydroxide, nano white carbon black, nano silicon carbide, nano aluminum nitride, nano boron nitride and nano calcium carbonate.
5. The self-cleaning anti-fouling flashover coating of claim 1, wherein the adhesion promoter is one or more of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, beta- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, or n-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane.
6. The self-cleaning anti-fouling flash coating of claim 1, wherein the catalyst is one or more of a platinum catalyst, dibutyltin dilaurate, stannous octoate, titanate, or tetramethylammonium hydroxide.
7. The self-cleaning anti-fouling flashover coating material of claim 1, wherein the curing agent is one or more of methyl tributyl ketoximosilane, vinyl triacetoxysilane, γ - (2, 3-epoxypropyl) propyl methyldimethoxysilane, or magnesium chloride.
8. A method for preparing a self-cleaning anti-fouling flashover coating material according to claim 1, which comprises the following steps:
(1) mixing coupling agent and ethanol, stirring, standing for alcoholysis;
(2) adding the coupling agent after alcoholysis into a nano filler to obtain a modified nano filler;
(3) fully dissolving polysiloxane in a benzene-free alkane solvent, stirring to completely disperse the polysiloxane, adding the modified nano filler, and stirring at room temperature to obtain a primary mixed rubber;
(4) and adding a curing agent, a catalyst and an adhesion promoter into the primary mixed glue, stirring to obtain a composite glue, and finally filtering and drying to obtain the super-hydrophobic anti-pollution flashover coating.
9. The method for preparing self-cleaning anti-fouling flashover coating according to claim 8, wherein the volume ratio of the coupling agent to the ethanol in the step (1) is 1: 2-1: 20, the temperature of the placing environment is 35-45 ℃, and the placing time is 1-2 h.
10. The method for preparing the self-cleaning anti-pollution flashover coating material according to the claim 8, wherein the stirring speed in the steps (3) and (4) is 100-120 r/min, the stirring time of the polysiloxane dissolved in the alkane solvent in the step (3) is 3-5 min, and the stirring time after adding the nano filler is 5-10 min; and (4) stirring for 3-5 min.
CN202210808966.2A 2022-07-11 2022-07-11 Self-cleaning anti-pollution flashover coating with long weather resistance and preparation method thereof Pending CN115074023A (en)

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CN115785757A (en) * 2022-10-28 2023-03-14 贵州电网有限责任公司 Insulating coating with low interface adhesion and preparation method thereof
CN116656238A (en) * 2023-06-05 2023-08-29 株洲时代新材料科技股份有限公司 Anti-pollution flashover insulating paint and preparation method thereof
CN116855169A (en) * 2023-08-10 2023-10-10 西安工程大学 Nanocomposite coating material for insulator surface anti-pollution flashover and preparation method thereof

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CN107652885A (en) * 2017-10-31 2018-02-02 广州聚旭机电技术研究院有限公司 A kind of electrical equipment antifouling flush paint and preparation method thereof
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CN116656238A (en) * 2023-06-05 2023-08-29 株洲时代新材料科技股份有限公司 Anti-pollution flashover insulating paint and preparation method thereof
CN116855169A (en) * 2023-08-10 2023-10-10 西安工程大学 Nanocomposite coating material for insulator surface anti-pollution flashover and preparation method thereof

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Application publication date: 20220920