CN107298939B - Reactor moisture-proof heat-conducting heat-dissipating coating and preparation method thereof - Google Patents
Reactor moisture-proof heat-conducting heat-dissipating coating and preparation method thereof Download PDFInfo
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- CN107298939B CN107298939B CN201710449122.2A CN201710449122A CN107298939B CN 107298939 B CN107298939 B CN 107298939B CN 201710449122 A CN201710449122 A CN 201710449122A CN 107298939 B CN107298939 B CN 107298939B
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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
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- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention provides reactor surface coating with good moisture-proof, heat-conducting and heat-dissipating functions, which comprises the following components in parts by mass: 100 parts of mixed rubber, 0.3 part of platinum catalyst, 60 parts of aluminum oxide, 60 parts of magnesium oxide, 1.2 parts of color paste and 50-60 parts of organic solvent, wherein the mixed rubber is prepared by mixing silicon rubber, fumed silica, calcium carbonate and dimethyl silicone oil, and the organic solvent is a mixture of aromatic hydrocarbons, aliphatic hydrocarbons and alkanes. Also provides a preparation method of the moistureproof heat-conducting heat-dissipating coating for the reactor. The reactor surface coating improves the waterproof and moistureproof performance of the reactor, and reduces and prevents water vapor and water molecules from permeating into the equipment body; improve the heat conduction heat dispersion of reactor, local heat generating situation appears or when the normal operation in the equipment body, the phenomenon of generating heat of production can in time give off the heat through the coating, maintains the normal temperature scope of equipment body, ensures the safe operation of equipment.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a moistureproof heat-conducting heat-dissipating coating for a reactor and a preparation method thereof.
Background
A dry-type air-core reactor (hereinafter referred to as reactor) is an important device used for occasions of limiting short-circuit current, reactive compensation and phase shift and the like in a power system transformer substation. The reactor is used for a long time in outdoor operation, and the surface coating and the surface layer material of the reactor are easy to age, wet, become brittle, even fall off, peel off and the like. The method is related to the defects of the manufacturing process of the reactor, and in the manufacturing process of the reactor, the traditional manufacturing process is adopted, the aluminum conductor layer of each circle is glued, adhered and wrapped by the epoxy resin glass fiber, and meanwhile, each aluminum conductor is wrapped by the polyester film for treatment. And then winding, wrapping, curing and drying layer by layer to finally prepare the reactor equipment product. Because the direct cementing of epoxy layer and aluminium wire layer, along with the increase of service life, the phenomenon that the hardening of ageing appears easily, even come unstuck and break away from, there will be certain gap at epoxy top layer and aluminium wire layer directness like this. And the epoxy top layer does not have special treatment, there is certain not enough in the aspect of waterproof and moisture-proof performance, moisture steam molecule permeates the epoxy top layer easily and permeates the aluminium wire nexine, under the electric field effect, equipment is in electricity for a long time, it is hot, under the moist service environment, the polyester film that arouses the aluminium wire top layer easily overheats and wets and the melting of hydrolysising, such result leads to the aluminium wire directly under the separation that does not have polyester film, direct mutual contact between the aluminium wire, arouse short circuit between the turn, equipment local heating, the epoxy top layer is heated and is melted, finally lead to equipment to burn out.
Disclosure of Invention
The invention aims to provide a reactor surface coating with good moisture-proof, heat-conducting and heat-dissipating functions, which comprises the following components in parts by mass: 100 parts of mixed rubber, 0.3 part of platinum catalyst, 60 parts of aluminum oxide, 60 parts of magnesium oxide, 1.2 parts of color paste and 50-60 parts of organic solvent, wherein the mixed rubber is prepared by mixing silicon rubber, fumed silica, calcium carbonate and dimethyl silicone oil, and the organic solvent is a mixture of aromatic hydrocarbons, aliphatic hydrocarbons and alkanes.
The invention also provides a preparation method of the moistureproof heat-conducting heat-dissipating coating for the reactor, which comprises the following steps:
1) preparation of rubber compound:
1-1) placing silicon rubber, calcium carbonate and dimethyl silicone oil in a stirring kettle for kneading, wherein the material temperature is 110 ℃, the jacket temperature is 140 ℃, firstly, the materials are stirred in a reverse rotation mode for 10 minutes, and then, the materials are stirred in a forward rotation mode for 20 minutes;
1-2) adding the fumed silica into the stirring kettle twice, wherein after the fumed silica is added each time, the fumed silica is firstly stirred in a reverse rotation mode for 10 minutes, and then stirred in a forward rotation mode for 10 minutes;
1-3) continuously stirring for more than 1 hour to ensure that the raw materials are uniformly mixed;
1-4) controlling and adjusting the temperature of the raw materials to 120 ℃, adjusting the temperature of a jacket to 150 ℃, opening a vacuum valve, starting a vacuum-pumping system, vacuumizing the stirring kettle to an environment of minus 0.095MPa, and stirring for 1 hour;
1-5); closing the vacuum valve and the vacuum pumping system, keeping the raw materials under the vacuum condition, continuing stirring for 1-1.5 hours, and then standing overnight for later use;
2) grinding the rubber compound:
2-1) positively rotating and stirring the mixed rubber raw material standing overnight for 10 minutes, and removing the vacuum condition;
2-2) transferring the rubber compound raw material into a grinding machine, adding color paste, grinding and mixing;
3) preparation of the coating:
3-1) placing the ground rubber compound and part of organic solution into a stirring kettle, adjusting a stirring shaft to be the lowest, rotating at a speed of 40-50 r/s, and stirring for 0.5 hour in a rotating mode, wherein the organic solution accounts for 1/4 of the total amount;
3-2) adding part of organic solvent into a stirring kettle, rotating at the rotating speed of 40-50 r/s, and stirring for 1.5 hours, wherein the organic solvent accounts for 1/4 of the total amount;
3-3) adding part of the organic solution, part of the platinum catalyst, magnesium oxide and aluminum oxide into a stirring kettle, adjusting the stirring shaft to the lowest speed, rotating at the speed of 40-50 r/s, and stirring for 0.5 hour in a rotating mode, wherein the organic solution accounts for 1/4% of the total amount, and the platinum catalyst accounts for 2/3% of the total amount;
3-4) adding the residual organic solution and a platinum catalyst into a stirring kettle, adjusting the stirring shaft to be the lowest, rotating at a speed of 40-50 r/s, and stirring for 10 minutes in a rotating mode, wherein the organic solution accounts for 1/4 of the total amount, and the platinum catalyst accounts for 1/3 of the total amount;
3-5) opening a vacuum valve, starting a vacuum pumping system, pumping vacuum in the stirring kettle to an environment of minus 0.095MPa, stirring for 20 minutes, stopping stirring immediately, and relieving the vacuum condition;
3-6) filtering the mixture by a 100-mesh sieve, and packaging to obtain the reactor moistureproof heat-conducting heat-dissipating coating.
Compared with the prior art, the invention has the beneficial effects that:
(1) the waterproof and moistureproof performance of the reactor is improved, and the permeation of water vapor and water molecules into the equipment body is reduced and prevented;
(2) improve the heat conduction heat dispersion of reactor, local heat generating situation appears or when the normal operation in the equipment body, the phenomenon of generating heat of production can in time give off the heat through the coating, maintains the normal temperature scope of equipment body, ensures the safe operation of equipment.
Detailed Description
The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1:
the preparation method of the reactor damp-proof heat-conducting heat-dissipating coating comprises the following steps:
1) preparation of rubber compound:
1-1) placing silicon rubber, calcium carbonate and dimethyl silicone oil in a stirring kettle for kneading, wherein the material temperature is 110 ℃, the jacket temperature is 140 ℃, firstly, the materials are stirred in a reverse rotation mode for 10 minutes, and then, the materials are stirred in a forward rotation mode for 20 minutes;
1-2) adding the fumed silica into the stirring kettle in equal parts twice, wherein after the fumed silica is added each time, the fumed silica is firstly stirred in a reverse rotation mode for 10 minutes, and then stirred in a forward rotation mode for 10 minutes;
1-3) continuously stirring for more than 1 hour to ensure that the raw materials are uniformly mixed;
1-4) controlling and adjusting the temperature of the raw materials to 120 ℃, adjusting the temperature of a jacket to 150 ℃, opening a vacuum valve, starting a vacuum-pumping system, vacuumizing the stirring kettle to an environment of minus 0.095MPa, and stirring for 1 hour;
1-5); closing the vacuum valve and the vacuum pumping system, keeping the raw materials under the vacuum condition, continuing stirring for 1-1.5 hours, and then standing overnight for later use;
2) grinding the rubber compound:
2-1) positively rotating and stirring the mixed rubber raw material standing overnight for 10 minutes, and removing the vacuum condition;
2-2) transferring the rubber compound raw material into a grinding machine, and adding 1.2 parts of color paste for grinding and mixing by taking the total mass of the rubber compound raw material as 100 parts;
3) preparation of the coating:
3-1) placing the ground rubber compound and 15 parts of organic solution in a stirring kettle, adjusting the stirring shaft to be the lowest, rotating at the speed of 40-50 r/s, and rotationally stirring for 0.5 hour;
3-2) adding 15 parts of organic solvent into a stirring kettle, rotating at the speed of 40-50 r/s, and stirring for 1.5 hours;
3-3) adding 15 parts of organic solution, 0.2 part of platinum catalyst, 60 parts of magnesium oxide and 60 parts of aluminum oxide into a stirring kettle, adjusting the stirring shaft to be the lowest, rotating at 40-50 r/s, and rotationally stirring for 0.5 hour;
3-4) adding 15 parts of organic solution and 0.1 part of platinum catalyst into a stirring kettle, adjusting the stirring shaft to the lowest speed, rotating at 40-50 r/s, and stirring for 10 minutes;
3-5) opening a vacuum valve, starting a vacuum pumping system, pumping vacuum in the stirring kettle to an environment of minus 0.095MPa, stirring for 20 minutes, stopping stirring immediately, and relieving the vacuum condition;
3-6) filtering the mixture by a 100-mesh sieve, and packaging to obtain the reactor moistureproof heat-conducting heat-dissipating coating.
Claims (1)
1. A preparation method of a damp-proof heat-conducting heat-dissipating coating for a reactor is characterized by comprising the following components in parts by mass: 100 parts of mixed rubber, 0.3 part of platinum catalyst, 60 parts of aluminum oxide, 60 parts of magnesium oxide, 1.2 parts of color paste and 50-60 parts of organic solvent, wherein the mixed rubber is prepared by mixing silicon rubber, fumed silica, calcium carbonate and dimethyl silicone oil, and the organic solvent is a mixture of aromatic hydrocarbons, aliphatic hydrocarbons and alkanes;
the preparation method comprises the following steps:
1) preparation of rubber compound:
1-1) placing silicon rubber, calcium carbonate and dimethyl silicone oil in a stirring kettle for kneading, wherein the material temperature is 110 ℃, the jacket temperature is 140 ℃, firstly, the materials are stirred in a reverse rotation mode for 10 minutes, and then, the materials are stirred in a forward rotation mode for 20 minutes;
1-2) adding the fumed silica into the stirring kettle twice, wherein after the fumed silica is added each time, the fumed silica is firstly stirred in a reverse rotation mode for 10 minutes, and then stirred in a forward rotation mode for 10 minutes;
1-3) continuously stirring for more than 1 hour to ensure that the raw materials are uniformly mixed;
1-4) controlling and adjusting the temperature of the raw materials to 120 ℃, adjusting the temperature of a jacket to 150 ℃, opening a vacuum valve, starting a vacuum-pumping system, vacuumizing the stirring kettle to an environment of minus 0.095MPa, and stirring for 1 hour;
1-5); closing the vacuum valve and the vacuum pumping system, keeping the raw materials under the vacuum condition, continuing stirring for 1-1.5 hours, and then standing overnight for later use;
2) grinding the rubber compound:
2-1) positively rotating and stirring the mixed rubber raw material standing overnight for 10 minutes, and removing the vacuum condition;
2-2) transferring the rubber compound raw material into a grinding machine, adding color paste, grinding and mixing;
3) preparation of the coating:
3-1) placing the ground rubber compound and part of organic solvent in a stirring kettle, adjusting a stirring shaft to be the lowest, rotating at a speed of 40-50 r/s, and stirring for 0.5 hour in a rotating mode, wherein the organic solvent accounts for 1/4 of the total mass;
3-2) adding part of organic solvent into a stirring kettle, rotating at the speed of 40-50 r/s, and stirring for 1.5 hours in a rotating mode, wherein the organic solvent accounts for 1/4 of the total mass;
3-3) adding part of organic solvent, part of platinum catalyst, magnesium oxide and aluminum oxide into a stirring kettle, adjusting the stirring shaft to the lowest speed, rotating at the speed of 40-50 r/s, and stirring for 0.5 hour in a rotating mode, wherein the organic solvent accounts for 1/4% of the total mass, and the platinum catalyst accounts for 2/3% of the total mass;
3-4) adding the residual organic solvent and a platinum catalyst into a stirring kettle, adjusting the stirring shaft to the lowest speed, rotating at the speed of 40-50 r/s, and stirring for 10 minutes in a rotating mode, wherein the organic solvent accounts for 1/4% of the total mass, and the platinum catalyst accounts for 1/3% of the total mass;
3-5) opening a vacuum valve, starting a vacuum pumping system, pumping vacuum in the stirring kettle to an environment of minus 0.095MPa, stirring for 20 minutes, stopping stirring immediately, and relieving the vacuum condition;
3-6) filtering the mixture by a 100-mesh sieve, and packaging to obtain the reactor moistureproof heat-conducting heat-dissipating coating.
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| CN106398518A (en) * | 2016-08-31 | 2017-02-15 | 南方电网科学研究院有限责任公司 | Dry-type air-core reactor protective coating and preparation method and use method thereof |
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