CN112812895A - Cleaning composition with repairing function for composite insulator and preparation method thereof - Google Patents

Cleaning composition with repairing function for composite insulator and preparation method thereof Download PDF

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CN112812895A
CN112812895A CN202011606685.6A CN202011606685A CN112812895A CN 112812895 A CN112812895 A CN 112812895A CN 202011606685 A CN202011606685 A CN 202011606685A CN 112812895 A CN112812895 A CN 112812895A
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silicone oil
sodium
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CN112812895B (en
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景欣欣
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Suzhou Hechuan Chemical Technology Service Co ltd
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    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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    • 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
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    • 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
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
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    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
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    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
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    • C11D3/2068—Ethers
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    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
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    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
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    • C—CHEMISTRY; METALLURGY
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    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/349—Organic compounds containing sulfur additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea
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    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
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    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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Abstract

The invention provides a cleaning composition with a repairing function for a composite insulator, and belongs to the technical field of cleaning agents. The cleaning composition for the composite insulator with the repairing function comprises a dirt cleaning agent and an organic silicon rubber repairing agent, does not contain corrosive and forbidden substances, and comprises a surfactant with small surface tension, a penetrating wetting agent, a builder, a dustproof agent, an insulating layer repairing agent and the like. The contained functional organic silicon is deposited on the surface of the composite insulator to form a repair layer of 2-5 microns, the corroded and uneven part of the surface layer is repaired, the hydrophobicity and the hydrophobic mobility of the surface of the repair layer are recovered, the contained dustproof agent can effectively reduce the subsequent pollution storage probability of the insulator, and the cleaning period is prolonged.

Description

Cleaning composition with repairing function for composite insulator and preparation method thereof
Technical Field
The invention relates to the technical field of cleaning agents, and particularly relates to a cleaning composition with a repairing function for a composite insulator and a preparation method thereof.
Background
An insulator refers to a device capable of withstanding the action of voltage and mechanical stress, mounted between conductors of different potentials or between a conductor and a grounded member. Depending on the insulating material used, a porcelain insulator, a glass insulator, and a composite insulator (also referred to as a composite insulator) can be classified. The composite insulator is characterized in that an insulating part of the composite insulator is an insulator consisting of a glass fiber resin core rod (or core tube), a sheath made of organic materials and an umbrella skirt. The organic protective material at the outermost layer of the composite insulator is organic silicon Rubber (RTV) which mainly contains Si-O-Si bonds, has excellent insulating property, corona resistance and arc resistance, and is remarkably characterized by high-temperature stability and excellent weather resistance, and common silicon rubber has medium oil resistance and solvent resistance. The clean surface of the insulator is hydrophobic, after the surface area of the insulator is polluted, the surface hydrophobicity is increased, the polluted surface and the surface of the insulator are adsorbed due to van der Waals force, and the surface is not combined by hydrogen bonds.
In the aspect of research on insulator surface pollution components, c.sungnam, liheng, feng bin, and anyshao plum, etc. respectively research on insulator pollution components in different areas, and the results show that main components of pollution are calcium sulfate and silicon dioxide, wherein soluble components in the pollution in coastal areas are mainly sodium chloride, and main components in inland areas are mainly calcium sulfate. The method comprises the following steps of analyzing the surface contamination of the high-voltage insulator by Liouqia and the like, wherein inorganic matters mainly comprise silicon dioxide and aluminum oxide, organic matters mainly comprise grease of animals and plants and mineral oil, and the mass fraction of the organic matters is about 18%; SEM results show that the silica scale is compact in structure and is tightly combined with RTV coating on the surface of an insulator, and the scale is particularly difficult to clean. Researches such as Cao hong Wei and the like show that the thickness of dirt on the surface of the insulator is about 20 microns, the dirt is tightly stacked, and the dirt permeates into aging gaps of the silicone rubber layer.
In the aspect of research on cleaning materials for dirt on the surface of an insulator, the traditional method mainly comprises the steps of carrying out water spraying by a handheld spray gun, spraying water by a helicopter, carrying out washing by a robot remote control spray gun and a fixed water gun and the like. Some parts are cleaned by using an aqueous insulator cleaning agent, but the universality and the functionality are poor, only the metal or ceramic part or the composite material rubber part is cleaned independently, and the overall cleaning efficiency is low; and the cleaning agent is partially cleaned by adopting an insulator cleaning agent, most of the cleaning agents contain organic solvents such as dichloromethane, trichloroethylene, tetrachloroethylene and the like, and the cleaning agent has strong corrosivity to human skin and relatively high harm to the environment and is not suitable for large-scale use. Dirt in gaps among the umbrella skirts of the insulators is not easy to remove, dirt on the surfaces of the insulators in partial heavy-dirt areas is thick and compact, the manual cleaning mode is not only poor in dust removing effect and low in efficiency, but also is difficult to clean thoroughly only by high-pressure water washing.
Disclosure of Invention
In view of the above, the present invention aims to provide a cleaning composition for a composite insulator with a repairing function and a preparation method thereof, and the cleaning composition for a composite insulator with a repairing function provided by the present invention has the advantages of environment-friendly components, strong cleaning capability and a repairing effect on an organic silicon rubber coating.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a cleaning composition with a repairing function for a composite insulator, which comprises a dirt cleaning agent and a silicone rubber repairing agent;
the dirt cleaning agent comprises the following components in parts by weight: 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water;
the organic silicon rubber repairing agent comprises the following components in parts by mass: 25-35 parts of polydimethylsiloxane containing a modified group, 3-8 parts of a compound emulsifier, 1-3 parts of a dispersing agent, 0.5-1.5 parts of a silane coupling agent and 60-70 parts of water.
Preferably, the organic acid is a mixture of two or more of citric acid, tartaric acid, lactic acid, gluconic acid, glycolic acid, ethylenediaminetetraacetic acid, succinic acid, glycine, glycolic acid, acetic acid, maleic acid, malic acid, diethylenetriaminepentaacetic acid, hydroxyethylidenediphosphine, aminotrimethylenephosphonic acid, and diethylenetriaminepentamethylenephosphonic acid.
Preferably, the ethoxylated polytrisiloxane is a product prepared by reacting heptamethyltrisiloxane with allyl alcohol polyether, and has the structure shown in formula I:
Figure BDA0002873766850000021
in the formula I, the value of n is 5-12; the cloud point of the ethoxylated poly trisiloxane is 35-55 ℃, and the HLB value is 8-11.
Preferably, the fluorine-containing surfactant is at least one of sodium tridecafluorooctyl sulfonate, potassium perfluorobutyl sulfonate, sodium perfluorooctyl sulfonate, sodium perfluorohexylethyl sulfonate, sodium perfluorononenoyloxybenzene sulfonate, sodium perfluorooctanoate, perfluorohexylethyl alcohol polyoxyethylene ether, perfluoroalkyl ethanol polyoxyethylene ether, fluorine-containing polyether, N-dimethyl-N' - (2-trifluoromethyl-1-pentafluoroethyl) perfluoropropenyl propane diamine, and the like.
Preferably, the polydimethylsiloxane containing the modified group is at least one of hydrogen-containing silicone oil, hydroxyl-terminated silicone oil, amino silicone oil, carboxyl silicone oil, epoxy silicone oil, long-chain alkyl silicone oil, aralkyl silicone oil, polyether graft modified silicone oil and fluorine modified silicone polymer, and the viscosity of the polydimethylsiloxane containing the modified group is 500-5000 cSt.
Preferably, the compound emulsifier is a low HLB emulsifier and a high HLB emulsifier, and the HLB value of the compound emulsifier is 10-11.
Preferably, the compound emulsifier is a mixture of two or more of polyethylene glycol, nonylphenol polyoxyethylene ether, triton, tert-octylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, peregal, isooctanol polyoxyethylene ether, isomeric dodecyl alcohol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, fatty acid polyoxyethylene ester, fatty amine polyoxyethylene ether, isooctanol polyoxypropylene polyoxyethylene ether, lauryl alcohol random polyether, isomeric tridecanol random polyether, fatty alcohol polyoxyethylene butyl ether, sodium octenyl succinic anhydride, potassium octenyl succinic anhydride, sodium dodecenyl succinic anhydride, potassium dodecenyl succinic anhydride, sodium dodecyl benzene sulfonate, potassium dodecyl benzene sulfonate, alkyl glycoside, sodium hexane sulfonate, sodium heptane sulfonate, sodium isooctoate and potassium isooctoate.
Preferably, the cleaning composition with the repairing function for the composite insulator comprises a dirt cleaning agent, an organic silicon rubber repairing agent and water, wherein the mass ratio of the dirt cleaning agent to the organic silicon rubber repairing agent to the water is 10-20: 5-10: 70-85.
The invention also provides a preparation method of the cleaning composition for the composite insulator with the repairing function, which comprises the following steps:
mixing 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water according to parts by weight to obtain a dirt cleaning agent;
mixing 25-35 parts by weight of polydimethylsiloxane containing denatured groups, 3-8 parts by weight of compound emulsifier and 1-3 parts by weight of dispersant, and heating to obtain a denatured silicone oil mixture;
mixing the modified silicone oil mixture with 60-70 parts of water to obtain a modified silicone oil emulsion;
and mixing the modified silicone oil emulsion with 0.5-1.5 parts of silane coupling agent to obtain the organic silicon rubber repairing agent.
Preferably, the method further comprises the step of mixing the dirt cleaning agent, the organic silicon rubber repairing agent and water, wherein the mass ratio of the dirt cleaning agent to the organic silicon rubber repairing agent to the water is 10-20: 5-10: 70-85.
The beneficial technical effects are as follows: the invention provides a cleaning composition with a repairing function for a composite insulator, which comprises a dirt cleaning agent and a silicone rubber repairing agent. The cleaning agent provided by the invention comprises a surfactant with small surface tension, a penetrating wetting agent, a builder, a dustproof agent, an insulation repairing agent and the like, and multiple organic auxiliaries are synergistically acted on the surface of a polluted insulator to be spontaneously soaked and spread, so that the pollution is fallen off from the surface of the insulator, the cleaning agent has high cleaning capacity, wetting time, scrubbing time and the like, and can be used for simultaneously cleaning ceramic surfaces, metal surfaces, rubber surfaces, umbrella skirts and other parts. The cleaning agent provided by the invention contains functional organic silicon, is deposited on the surface of a composite insulator to form a repairing layer with the thickness of 2-5 microns, repairs the corroded and uneven part of the surface layer of the organic silicon rubber, further recovers the hydrophobicity and the hydrophobic mobility of the organic silicon rubber layer, and repairs the electrical insulation property of the organic silicon rubber layer; meanwhile, the adhesive force promoter is contained, so that the repairing coating can be firmly combined with the organic silicon rubber; the added organic fluorine additive can effectively reduce the subsequent pollution storage probability of the insulator and prolong the cleaning period. The cleaning composition for the composite insulator with the repairing function provided by the invention does not contain corrosive and forbidden substances in the formula, has small damage effect on the environment, does not damage a silicon rubber coating on the surface of the insulator, and is easy to treat the cleaned wastewater.
Drawings
FIG. 1 is the contact angle of the RTV surface of the composite insulator to water after cleaning in example 1;
FIG. 2 is the contact angle of the RTV surface of the composite insulator to water after cleaning in example 2;
FIG. 3 is the contact angle of the RTV surface of the composite insulator to water after cleaning in example 3;
FIG. 4 shows the contact angle of the RTV surface of the composite insulator to water after cleaning in example 4;
FIG. 5 is a contact angle of the RTV surface of the composite insulator to water after cleaning in comparative example 1;
FIG. 6 is the contact angle of the RTV surface of the composite insulator to water after cleaning in comparative example 2;
FIG. 7 shows the contact angle of the RTV surface of the composite insulator to water after cleaning in comparative example 3;
FIG. 8 is the contact angle of the RTV surface of the composite insulator to water after cleaning of comparative example 4;
fig. 9 shows the contact of clean composite insulator RTV surface to water.
Detailed Description
The invention provides a cleaning composition with a repairing function for a composite insulator, which comprises a dirt cleaning agent and a silicone rubber repairing agent;
the dirt cleaning agent comprises the following components in parts by weight: 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water;
the organic silicon rubber repairing agent comprises the following components in parts by mass: 25-35 parts of polydimethylsiloxane containing a modified group, 3-8 parts of a compound emulsifier, 1-3 parts of a dispersing agent, 0.5-1.5 parts of a silane coupling agent and 60-70 parts of water.
The cleaning composition for the composite insulator with the repairing function comprises a dirt cleaning agent and a silicone rubber repairing agent.
In the invention, the dirt cleaning agent comprises the following components in parts by mass: 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew preventive and 60-80 parts of water.
The dirt cleaning agent comprises 5-10 parts of organic acid, and more preferably 6-8 parts. In the present invention, the organic acid is a mixture of two or more of citric acid, tartaric acid, lactic acid, gluconic acid, glycolic acid, ethylenediaminetetraacetic acid, succinic acid, glycine, acetic acid, maleic acid, malic acid, diethylenetriaminepentaacetic acid, hydroxyethylidene diphosphine, aminotrimethylene phosphonic acid, and diethylenetriaminepentamethylene phosphonic acid, and preferably a mixture of two or more of citric acid, lactic acid, gluconic acid, acetic acid, and malic acid. The amount ratio of each component in the mixture is not particularly limited, and the components can be mixed in any ratio. In the invention, the organic carboxylate has strong coordination groups, can complex and dissolve metal ions such as calcium, magnesium, iron and the like in insulator dirt, simultaneously enables the product to have excellent hard water resistance, and can meet the use requirements of different water qualities in different regions.
The dirt cleaning agent comprises 5-10 parts by mass of an alcohol ether solvent, and more preferably 8 parts by mass of the organic acid. In the present invention, the alcohol ether solvent is at least one of ethylene glycol, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol monobutyl ether, ethylene glycol phenyl ether, diethylene glycol monoethyl ether, diethylene glycol mono-n-propyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, 1, 2-propylene glycol, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol butyl ether, tripropylene glycol butyl ether, propylene glycol phenyl ether, benzyl alcohol, and the like. In the present invention, when the alcohol ether solvent is a mixture of two or more, the amount of each component in the mixture is not particularly limited, and the components may be mixed in any ratio.
The dirt cleaning agent comprises 2-10 parts of ethoxylated poly trisiloxane, and more preferably 4-8 parts of ethoxylated poly trisiloxane based on the mass of the organic acid. In the present invention, the ethoxylated polytrisiloxane is a product prepared by reacting heptamethyltrisiloxane with allyl alcohol polyether, and has a structure represented by formula I:
Figure BDA0002873766850000061
in the invention, the value of n in the formula I is 5-12, and more preferably 6-9; the cloud point of the ethoxylated poly trisiloxane is 35-55 ℃, and the HLB value is 8-11.
The ethoxy modified polytrisiloxane is a nonionic organosilicon surfactant, is colorless to light amber liquid in appearance, can obviously reduce the surface tension of a solvent, has super-strong wettability and spreadability, has the characteristics of high temperature resistance, no toxicity, no corrosion, weather resistance, physiological inertia and the like of polysiloxane, and also has the characteristics of high surface activity, emulsification, wetting, dispersion, good antistatic performance, defoaming and foam inhibition of a hydrocarbon surfactant. The excellent wetting property of the cleaning agent can promote the cleaning agent to go deep into the interior of the dirt, further promote the complexing dissolution of the organic carboxylic acid on the dirt and improve the cleaning effect.
The dirt cleaning agent comprises 1-5 parts of fluorine-containing surfactant, and preferably 2-3 parts of fluorine-containing surfactant based on the mass of the organic acid. In the present invention, the fluorine-containing surfactant is at least one of sodium tridecafluorooctanoate sulfonate, potassium perfluorobutylsulfonate, sodium perfluorooctylsulfonate, sodium perfluorohexylethylsulfonate, sodium perfluorononenoyloxybenzenesulfonate, sodium perfluorooctanoate, perfluorohexylethyl alcohol polyoxyethylene ether, perfluoroalkyl ethanol polyoxyethylene ether FEO-300, fluorine-containing polyether, N-dimethyl-N' - (2-trifluoromethyl-1-pentafluoroethyl) perfluoropropenyl propylenediamine, and the like, and more preferably at least one of sodium tridecafluorooctanoate sulfonate, potassium perfluorobutylsulfonate, sodium perfluorooctylsulfonate, sodium perfluorohexylethylsulfonate, sodium perfluorononenoyloxybenzenesulfonate, and sodium perfluorooctanoate. When the fluorosurfactant is a mixture of two or more, the amount of each component in the mixture is not particularly limited and can be mixed in any ratio.
The fluorine-containing surfactant is a high-performance product, can play an obvious role in synergism after being added in a small amount, has good wettability and permeability, enables the cleaning agent to be instantly dissolved with oil stains on the surface of the organic silicon rubber into a whole, and accelerates the cleaning speed. The directional arrangement layer of the perfluoroalkyl chain can greatly reduce the static electricity on the surface of the organic silicon rubber, further reduce the secondary adsorption of dust, dirt and microorganisms on the surface of the organic silicon rubber after cleaning, and has good dustproof effect.
The dirt cleaning agent comprises 1-3 parts of corrosion inhibitor by mass of the organic acid, and preferably 2 parts. In the present invention, the corrosion inhibitor is preferably at least one selected from diethanolamine, triethanolamine, benzotriazole, glucose, sucrose, mannitol, sodium benzoate, alkylimidazoline, thiourea, 2-mercaptobenzothiazole, 2-hydroxybenzothiazole, 2-methylbenzothiazole, sodium molybdate, sodium metasilicate, sodium tetraborate, sodium tungstate, sodium molybdate and the like, and more preferably at least one selected from diethanolamine, triethanolamine, glucose and sucrose. In the present invention, when the corrosion inhibitor is a mixture of two or more kinds, the amount of each component in the mixture is not particularly limited, and the components may be mixed in any ratio.
The dirt cleaning agent comprises 2-10 parts of a sterilization and mildew-proof agent, preferably 5-8 parts by mass of the organic acid. In the invention, the bactericidal mildew preventive is preferably a benzisothiazolone compound. In the present invention, the benzisothiazolin-one compound is preferably at least one of 1, 2-benzisothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-butyl-1, 2-benzisothiazolin-3-one, N-octyl-1, 2-benzisothiazolin-3-one, and more preferably 1, 2-benzisothiazolin-3-one and/or 5-chloro-2-methyl-4-isothiazolin-3-one. In the present invention, when the bactericidal and antifungal agent is a mixture of two or more kinds, the amounts of the respective components in the mixture are not particularly limited, and the mixture may be mixed at any ratio.
The dirt cleaning agent comprises 60-80 parts by mass of the organic acid, preferably 70-75 parts by mass of water.
The organic silicon rubber repairing agent comprises 25-35 parts of polydimethylsiloxane containing a modified group, and more preferably 30-32 parts. In the invention, the polydimethylsiloxane containing the modified group is hydrogen-containing silicone oil, hydroxyl-terminated silicone oil, amino silicone oil, carboxyl silicone oil, epoxy silicone oil, long-chain alkyl silicone oil, aralkyl silicone oil, polyether graft modified silicone oil or fluorine modified silicone polymer, and in the invention, the viscosity of the polydimethylsiloxane containing the modified group is 500-5000 cSt, preferably 1000-4000 cSt, and more preferably 2000-3000 cSt.
The polydimethylsiloxane containing the modified group can form a 2-10 micron repairing layer on the surface of the silicon rubber composite insulator to recover the hydrophobicity and the hydrophobic mobility of the surface of the silicon rubber composite insulator.
Based on the mass of the polydimethylsiloxane containing the denatured groups, the organic silicon rubber repairing agent comprises 3-8 parts of compound emulsifier, preferably 5 parts. In the invention, the compound emulsifier is a low HLB emulsifier and a high HLB emulsifier, and the HLB value of the compound emulsifier is 10-11. The compound emulsifier is a mixture of two or more of polyethylene glycol, nonylphenol polyoxyethylene ether, triton, tert-octylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, peregal, isooctanol polyoxyethylene ether, isomeric dodecyl alcohol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, fatty acid polyoxyethylene ester, fatty amine polyoxyethylene ether, isooctanol polyoxypropylene polyoxyethylene ether, lauryl alcohol random polyether, isomeric tridecanol random polyether, fatty alcohol polyoxyethylene butyl ether, sodium salt of octenyl succinic anhydride, potassium salt of octenyl succinic anhydride, sodium salt of dodecenyl succinic anhydride, potassium salt of dodecenyl succinic anhydride, sodium dodecyl benzene sulfonate, potassium dodecyl benzene sulfonate, alkyl glycoside, sodium hexane sulfonate, sodium heptane sulfonate, sodium isooctanoate and potassium isooctanoate. The dosage of each component in the mixture is not particularly limited, and the HLB value after mixing is 10-11.
According to the invention, the emulsifier with a low HLB value and the emulsifier with a high HLB value are compounded for use, so that the HLB value of the compounded emulsifier is 10-11, and the stable modified silicone oil emulsion can be prepared.
Based on the mass of the polydimethylsiloxane containing the denatured group, the organic silicon rubber repairing agent comprises 1-3 parts of a dispersing agent. In the invention, the dispersing agent is sodium polyacrylate, sodium salt of acrylic acid-maleic acid copolymer, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, acrylic acid-acrylamide copolymer, acrylic acid-phosphoryl copolymer, polyaspartic acid, sodium 2-naphthalenesulfonate, dispersing agent NNO, dispersing agent MF, nekal or sodium lignosulfonate.
Based on the mass of the polydimethylsiloxane containing the denatured group, the organic silicon rubber repairing agent comprises 0.5-1.5 parts of silane coupling agent. In the present invention, the silane coupling agent is gamma-chloropropyl-trimethoxysilane, gamma-mercaptopropyl-trimethoxysilane, gamma-aminopropyl-trimethoxysilane, gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriisopropylsilane, vinyltrichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (beta-methoxyethoxy) silane, or vinyltripropenoxysilane.
The silicone rubber repairing agent comprises, by mass, 60-70 parts of water, preferably 65 parts of water.
In the present invention, the cleaning composition for composite insulators having a repairing function preferably includes a dirt cleaning agent, a silicone rubber repairing agent and water. The mass ratio of the dirt cleaning agent to the organic silicon rubber repairing agent to the water is 10-20: 5-10: 70-85, preferably 15-18: 6-8: 75-80 parts.
The invention also provides a preparation method of the cleaning composition for the composite insulator with the repairing function, which comprises the following steps:
mixing 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water by mass of the organic acid to obtain a dirt cleaning agent;
taking the mass of the polydimethylsiloxane containing the denatured groups as a reference, mixing 25-35 parts of the polydimethylsiloxane containing the denatured groups, 3-8 parts of a compound emulsifier and 1-3 parts of a dispersing agent, and then heating to obtain a denatured silicone oil mixture;
mixing the modified silicone oil mixture with 60-70 parts of water to obtain a modified silicone oil emulsion;
and mixing the modified silicone oil emulsion with 0.5-1.5 parts of silane coupling agent to obtain the organic silicon rubber repairing agent.
By taking the mass of the organic acid as a reference, 5-10 parts of the organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water are mixed to obtain the dirt cleaning agent. The method of mixing is not particularly limited in the present invention, and a mixing method known to those skilled in the art may be selected.
Taking the mass of the polydimethylsiloxane containing the denatured groups as a reference, mixing 25-35 parts of the polydimethylsiloxane containing the denatured groups, 3-8 parts of a compound emulsifier and 1-3 parts of a dispersing agent, and then heating to obtain a denatured silicone oil mixture. In the invention, the heating is preferably to 50-70 ℃, more preferably to 55-65 ℃, and most preferably to 60 ℃. In the invention, the stirring is preferably carried out in the heating process and after heating, and the stirring time after heating is preferably 20-30 min, and more preferably 25 min.
After the modified silicone oil mixture is obtained, the modified silicone oil mixture is mixed with 60-70 parts of water to obtain the modified silicone oil emulsion. In the present invention, the mixing is preferably performed in the following manner:
adding a first part of water to the modified silicone oil mixture under first stirring to obtain a paste;
and adding the rest part of water into the paste in batches under second stirring to obtain the modified silicone oil emulsion.
In the invention, the first stirring speed is preferably 200-500 rpm, and more preferably 300-400 rpm; the first stirring time is preferably 20min after the modified silicone oil mixture forms a paste. The dropping speed of the first portion of water is not particularly limited in the present invention, and the dropping speed known to those skilled in the art may be selected.
In the invention, the second stirring speed is preferably 500-1000 rpm, and more preferably 600-800 rpm; the second stirring time is preferably set so that the denatured silicone oil mixture is uniformly dispersed in water. The method for adding the remaining water in batches is not particularly limited, and the method known to those skilled in the art can be selected.
After the modified silicone oil emulsion is obtained, the modified silicone oil emulsion is mixed with 0.5-1.5 parts of silane coupling agent to obtain the organic silicon rubber repairing agent. The mixing method is not particularly limited, and the modified silicone oil emulsion and the silane coupling agent are uniformly mixed by a mixing method well known to those skilled in the art.
The preparation method of the cleaning composition with the repairing function for the composite insulator further comprises the step of mixing the dirt cleaning agent, the organic silicon rubber repairing agent and water, wherein the mass ratio of the dirt cleaning agent to the organic silicon rubber repairing agent to the water is preferably 10-20: 5-10: 70-85, more preferably 15-18: 6-8: 75-80 parts.
The invention also provides a using method of the cleaning composition with the repairing function for the composite insulator, which comprises the following steps:
and spraying the cleaning composition for the composite insulator with the repairing function on the surface of a substrate to be cleaned, and keeping for 25-35 s for brushing.
In the invention, the cleaning composition for the composite insulator with the repairing function preferably comprises a dirt cleaning agent, an organic silicon rubber repairing agent and water; the mass ratio of the dirt cleaning agent to the organic silicon rubber repairing agent to the water is 10-20: 5-10: 70-85, preferably 15-18: 6-8: 75-80 parts.
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1
Preparing a dirt cleaning agent and an organic silicon rubber repairing agent according to the mass ratio:
the dirt cleaning agent comprises the following components: 3 parts of citric acid, 4 parts of hydroxyethylidene diphosphate, 6 parts of diethylene glycol monobutyl ether, 7 parts of ethoxylated polytriedosiloxane (EO number is 7, HLB value is 8-9), 1 part of perfluorooctyl sodium sulfonate, 1 part of 2-mercaptobenzothiazole, 1 part of 2-methyl-4-isothiazoline-3-ketone and 77 parts of water.
The organic silicon rubber repairing agent comprises the following components: 32 parts of hydroxyl-terminated polydimethylsiloxane, 32.5 parts of fatty alcohol-polyoxyethylene ether, 92.5 parts of fatty alcohol-polyoxyethylene ether, 1 part of sodium polyacrylate, 1 part of gamma-glycidyl ether oxypropyl trimethoxysilane and 62 parts of water
And uniformly mixing 12 parts of dirt cleaning agent, 5 parts of organic silicon rubber repairing agent and 83 parts of water to obtain the cleaning composition for the composite insulator with the repairing function.
Example 2
Respectively preparing a dirt cleaning agent and an organic silicon rubber repairing agent according to the mass ratio:
the dirt cleaning agent comprises the following components: 3 parts of glycolic acid, 5 parts of glycolic acid, 8 parts of dipropylene glycol methyl ether, 8 parts of ethoxylated polytriedosiloxane (the EO number is 8, the HLB value is 9-10), 1 part of potassium perfluorohexylethylsulfonate, 1 part of benzotriazole, 1 part of 2-methyl-4-isothiazoline-3-ketone and 77 parts of water.
The organic silicon rubber repairing agent comprises the following components: 28 parts of hydroxyl-terminated silicone oil, 32.5 parts of isooctanol polyoxyethylene ether, 92.5 parts of nonylphenol polyoxyethylene ether, 1 part of sodium salt of acrylic acid-maleic acid copolymer, 1 part of gamma-aminopropyltriethoxysilane and 65 parts of water.
And uniformly mixing 10 parts of dirt cleaning agent, 5 parts of organic silicon rubber repairing agent and 85 parts of water to obtain the cleaning composition for the composite insulator with the repairing function.
Example 3
Respectively preparing a dirt cleaning agent and an organic silicon rubber repairing agent according to the mass ratio:
the dirt cleaning agent comprises the following components: 4 parts of diethylenetriamine pentamethylenephosphonic acid, 6 parts of hydroxyethylidene diphosphonic acid, 8 parts of diethylene glycol monobutyl ether, 10 parts of ethoxylated polytrisiloxane (the EO number is 9, the HLB value is 10-11), 2 parts of perfluorooctyl sodium sulfonate, 1 part of 2-mercaptobenzothiazole, 1 part of 2-methyl-4-isothiazoline-3-ketone and 68 parts of water.
The organic silicon rubber repairing agent comprises the following components: 30 parts of amino silicone oil, 32 parts of fatty alcohol-polyoxyethylene ether, 93 parts of fatty alcohol-polyoxyethylene ether, 1 part of sodium polyacrylate, 1 part of vinyl trichlorosilane and 63 parts of water.
And uniformly mixing 10 parts of dirt cleaning agent, 5 parts of organic silicon rubber repairing agent and 85 parts of water to obtain the cleaning composition for the composite insulator with the repairing function.
Example 4
Respectively preparing a dirt cleaning agent and an organic silicon rubber repairing agent according to the mass ratio:
the dirt cleaning agent comprises the following components in percentage by mass: 3 parts of malic acid, 5 parts of hydroxyethylidene diphosphate, 8 parts of diethylene glycol monopropyl ether, 8 parts of ethoxylated polytriedosiloxane (EO number is 7, HLB value is 9-10), 1 part of potassium perfluorobutylsulfonate, 1 part of benzotriazole, 1 part of 2-methyl-4-isothiazoline-3-ketone and 73 parts of water.
The organic silicon rubber repairing agent comprises the following components: 32 parts of aralkyl silicone oil, 53 parts of isomeric tridecanol polyoxyethylene ether, 102 parts of isomeric tridecanol polyoxyethylene ether, 1 part of sodium polyacrylate, 0.5 part of vinyl trimethoxy silane and 61.5 parts of water.
And uniformly mixing 10 parts of dirt cleaning agent, 5 parts of organic silicon rubber repairing agent and 85 parts of water to obtain the cleaning composition for the composite insulator with the repairing function.
Comparative example 1
A water-base detergent for cleaning the surface of insulator is prepared from disodium hydroxy ethylidene diphosphonate, sodium polyacrylate, and alkylphenol polyethenoxy ether.
Comparative example 2
A solvent type insulator cleaning agent imported from Japan mainly contains ethanol, hydrocarbon solvent, trichloroethylene and nonionic surfactant.
Comparative example 3
Preparing a dirt cleaning agent and an organic silicon rubber repairing agent according to the mass ratio:
the dirt cleaning agent comprises the following components: 3 parts of citric acid, 4 parts of hydroxyethylidene diphosphate, 6 parts of diethylene glycol monobutyl ether, 7 parts of ethoxylated polytriedosiloxane (EO number is 7, HLB value is 8-9), 1 part of perfluorooctyl sodium sulfonate, 1 part of 2-mercaptobenzothiazole, 1 part of 2-methyl-4-isothiazoline-3-ketone and 77 parts of water.
And uniformly mixing 12 parts of dirt cleaning agent and 88 parts of water to obtain the cleaning composition for the composite insulator with the repairing function.
Comparative example 3 compared to example 1, no silicone rubber repair agent was added.
Comparative example 4
Respectively preparing a dirt cleaning agent and an organic silicon rubber repairing agent according to the mass ratio:
the dirt cleaning agent comprises the following components: 3 parts of glycolic acid, 5 parts of glycolic acid, 8 parts of dipropylene glycol methyl ether, 1 part of potassium perfluorohexylethylsulfonate, 1 part of benzotriazole, 1 part of 2-methyl-4-isothiazoline-3-ketone and 85 parts of water.
The organic silicon rubber repairing agent comprises the following components: 28 parts of hydroxyl-terminated silicone oil, 32.5 parts of isooctanol polyoxyethylene ether, 92.5 parts of nonylphenol polyoxyethylene ether, 1 part of sodium salt of acrylic acid-maleic acid copolymer,
1 part of gamma-aminopropyl triethoxysilane and 65 parts of water.
And uniformly mixing 10 parts of dirt cleaning agent, 5 parts of organic silicon rubber repairing agent and 85 parts of water to obtain the cleaning composition for the composite insulator with the repairing function.
The preparation method is the same as that of example 2.
Comparative example 4 compared to example 2, no ethoxylated polytrisiloxane was added.
The basic performance parameter tests were performed on examples 1 to 4 and comparative examples 1,2, 3 and 4.
The surface tension values of examples and comparative examples were measured by the platinum plate method using an automatic meter/interfacial tension meter.
According to the method specified in GB/T11983-2008 standard, the time from the contact of the cotton cloth wafer with the liquid surface to the beginning of sinking is measured, so as to characterize the wetting property.
TABLE 1 testing of cleaning agent parameters for examples 1-4 and comparative examples
Figure BDA0002873766850000131
As can be seen from Table 1, the cleaning agents provided in examples 1 to 4 can wet canvas within 28 to 32 seconds, and have a surface tension value of 20mN.m-1On the left and right sides, the ultra-low surface tension can ensure that the cleaning agent disclosed by the invention can quickly wet dirt on the RTV surface of the composite insulator, so that the cleaning time is greatly shortened, and the cleaning efficiency is improved. Comparing the examples with comparative examples 3 and 4, it can be seen that the surface tension can be reduced by adding only the polydimethylsiloxane containing the denatured group without adding the ethoxylated polytrieloxane, but the difference of the wetting time is larger, and the wetting time of the sample containing the ethoxylated polytriesiloxane can be obviously shortened.
The method comprises the steps of spraying the RTV cleaning solution obtained in the embodiments 1-4, the comparative examples 1,2, 3 and 4 on the surface of a composite insulator (the thickness of surface dirt is about 20 micrometers, the composite insulator is tightly stacked) which is abandoned in a certain transformer substation, staying for 35 seconds, after the composite insulator is fully wetted, brushing the RTV cleaning solution for 30 seconds at a constant speed by using a cleaning brush with the same specification, and finally spraying clean water on the surface of the RTV insulating coating. And (3) evaluating the cleaning efficiency, namely respectively testing the soluble contamination cleaning efficiency eta 1 and the insoluble contamination eta 2, wherein the calculation formula is as follows:
Figure BDA0002873766850000141
σ 1 and σ 2 are the conductivity of the solution before and after brushing the insulator sheet, μ S/m, respectively.
Figure BDA0002873766850000142
NSDD1、NSDD2The density values of ash before and after the insulator sheet is scrubbed are mg/cm2。
The electrical insulation recovery properties are mainly represented by the contact angle of the RTV coating layer after cleaning with water and the dyne value, and the recovery effect of the electrical insulation properties of the RTV surface is represented, and the results are shown in Table 2. It is generally believed that when the contact angle of water with the surface of the RTV coating is greater than 90 °, the surface has good dust-proof performance and excellent surface hydrophobicity.
TABLE 2 cleaning Effect test of examples 1-4 and comparative examples
Figure BDA0002873766850000151
As can be seen from table 2, the cleaning agents provided in examples 1 to 4 have a soluble contamination cleaning efficiency η 1 of 94% or more and an insoluble contamination cleaning efficiency η 2 of 90% or more; the comprehensive effect is obviously better than that of the water-based cleaning agent of the comparative example 1 and the solvent-based cleaning agent of the comparative example 2. The cleaning agent provided in comparative example 4, without adding ethoxylated polytrisiloxane, did not completely wet the surface of the foulant within 35S, resulting in a significantly lower cleaning efficiency η 1 for soluble foulants and a significantly lower cleaning efficiency η 2 for insoluble foulants than in example 2.
FIG. 9 shows the contact angle of the clean RTV surface of the composite insulator to water, the contact angle is 98.5 degrees, and the contact angle of the insulator with dirty surface to water is 118-120 degrees. FIGS. 1 to 4 are the contact angles of the RTV surfaces of the composite insulators to water after cleaning in examples 1 to 4, respectively, and the contact angles of the RTV surfaces to water after cleaning the composite insulators in examples 1 to 4 are close to the contact angles of the clean insulators to water; the dyne value of the upper surface of the clean insulator is 22.8yn/cm, and the dyne value of the surface of the composite insulator after cleaning in examples 1-4 is 23-25yn/cm, which indicates that the surface of the cleaned RTV has stronger hydrophobicity and the surface tension of the upper surface is basically recovered to the level of the clean insulator. Fig. 5 to 8 show the contact angle of the RTV surface of the composite insulator to water after comparative examples 1 to 4, respectively, and the difference between the contact angle of the RTV surface to water and the contact angle of the clean insulator is larger in the composite insulator after cleaning in comparative examples 1 to 4, which indicates that the cleaning is not thorough. The cleaning agent provided in comparative example 3, without addition of the silicone rubber repairing agent, had a significantly higher dyne value on the RTV surface after cleaning than that of example 1, and had a general hydrophobic migration property.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A cleaning composition with a repairing function for a composite insulator is characterized by comprising a dirt cleaning agent and a silicone rubber repairing agent;
the dirt cleaning agent comprises the following components in parts by weight: 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water;
the organic silicon rubber repairing agent comprises the following components in parts by mass: 25-35 parts of polydimethylsiloxane containing a modified group, 3-8 parts of a compound emulsifier, 1-3 parts of a dispersing agent, 0.5-1.5 parts of a silane coupling agent and 60-70 parts of water.
2. The cleaning composition according to claim 1, wherein the organic acid is a mixture of two or more of citric acid, tartaric acid, lactic acid, gluconic acid, glycolic acid, ethylenediaminetetraacetic acid, succinic acid, glycine, glycolic acid, acetic acid, maleic acid, malic acid, diethylenetriaminepentaacetic acid, hydroxyethylidenediphosphine, aminotrimethylenephosphonic acid, and diethylenetriaminepentamethylenephosphonic acid.
3. The cleaning composition of claim 1, wherein the ethoxylated polytrisiloxane is a product prepared by reacting heptamethyltrisiloxane with allyl alcohol polyether and has the structure shown in formula I:
Figure FDA0002873766840000011
in the formula I, the value of n is 5-12; the cloud point of the ethoxylated poly trisiloxane is 35-55 ℃, and the HLB value is 8-11.
4. The cleaning composition according to claim 1, wherein the fluorinated surfactant is at least one of sodium tridecafluorooctylate sulfonate, potassium perfluorobutylsulfonate, sodium perfluorooctylsulfonate, sodium perfluorohexylethyl sulfonate, sodium perfluorononenoyloxybenzene sulfonate, sodium perfluorooctanoate, perfluorohexylethyl alcohol polyoxyethylene ether, perfluoroalkyl alcohol polyoxyethylene ether, fluoropolyether, N-dimethyl-N' - (2-trifluoromethyl-1-pentafluoroethyl) perfluoropropenyl propylenediamine, and the like.
5. The cleaning composition according to claim 1, wherein the polydimethylsiloxane containing a denatured group is at least one of hydrogen-containing silicone oil, hydroxyl-terminated silicone oil, amino silicone oil, carboxyl silicone oil, epoxy silicone oil, long-chain alkyl silicone oil, aralkyl silicone oil, polyether graft modified silicone oil and fluorine modified silicone polymer, and the viscosity of the polydimethylsiloxane containing a denatured group is 500-5000 cSt.
6. The cleaning composition according to claim 1, wherein the compound emulsifier is a mixture of an emulsifier with a low HLB value and an emulsifier with a high HLB value, and the HLB value of the compound emulsifier is 10-11.
7. The cleaning composition of claim 6, the compound emulsifier is a mixture of two or more than two of polyethylene glycol, nonylphenol polyoxyethylene ether, triton, tert-octylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, peregal, isooctanol polyoxyethylene ether, isomeric dodecyl alcohol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, fatty acid polyoxyethylene ester, fatty amine polyoxyethylene ether, isooctanol polyoxypropylene polyoxyethylene ether, lauryl alcohol random polyether, isomeric tridecanol random polyether, fatty alcohol polyoxyethylene butyl ether, sodium salt of octenyl succinic anhydride, potassium salt of octenyl succinic anhydride, sodium salt of dodecenyl succinic anhydride, potassium salt of dodecenyl succinic anhydride, sodium dodecyl benzene sulfonate, potassium dodecyl benzene sulfonate, alkyl glycoside, sodium hexane sulfonate, sodium heptane sulfonate, sodium isooctoate and potassium isooctanoate.
8. The cleaning composition as claimed in any one of claims 1 to 7, wherein the cleaning composition for the composite insulator with the repairing function comprises a dirt cleaning agent, a silicone rubber repairing agent and water, and the mass ratio of the dirt cleaning agent to the silicone rubber repairing agent to the water is 10-20: 5-10: 70-85.
9. The preparation method of the cleaning composition for the composite insulator with the repairing function according to any one of claims 1 to 7, characterized by comprising the following steps:
mixing 5-10 parts of organic acid, 5-10 parts of an alcohol ether solvent, 2-10 parts of ethoxylated poly-trisiloxane, 1-5 parts of a fluorine-containing surfactant, 1-3 parts of a corrosion inhibitor, 2-10 parts of a sterilization mildew inhibitor and 60-80 parts of water according to parts by weight to obtain a dirt cleaning agent;
mixing 25-35 parts by weight of polydimethylsiloxane containing denatured groups, 3-8 parts by weight of compound emulsifier and 1-3 parts by weight of dispersant, and heating to obtain a denatured silicone oil mixture;
mixing the modified silicone oil mixture with 60-70 parts of water to obtain a modified silicone oil emulsion;
and mixing the modified silicone oil emulsion with 0.5-1.5 parts of silane coupling agent to obtain the organic silicon rubber repairing agent.
10. The preparation method of the organic silicon rubber repairing agent, which is characterized by further comprising the step of mixing the dirt cleaning agent, the organic silicon rubber repairing agent and water, wherein the mass ratio of the dirt cleaning agent to the organic silicon rubber repairing agent to the water is 10-20: 5-10: 70-85.
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