CN108264840B - Novel anti-pollution flashover coating and preparation method thereof - Google Patents
Novel anti-pollution flashover coating and preparation method thereof Download PDFInfo
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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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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1637—Macromolecular compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C08K2003/2224—Magnesium hydroxide
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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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention relates to a novel anti-pollution flashover coating and a preparation method thereof, belonging to the technical field of chemical coatings. The novel anti-pollution flashover coating comprises the following components in parts by weight: 80-110 parts of base adhesive, 10-25 parts of white carbon black, 30-60 parts of flame retardant, 0.1-2 parts of flame retardant auxiliary agent, 5-15 parts of cross-linking agent, 50-250 parts of diluent, 0.1-20 parts of tackifier, 0.01-5 parts of catalyst and 0.01-5 parts of self-cleaning auxiliary agent; the flame-retardant auxiliary agent is one or more metal complex solutions of platinum, palladium and rhodium. The novel anti-pollution flashover coating prepared by the invention has better flame retardant property, mechanical property and self-cleaning property, and has excellent comprehensive performance.
Description
Technical Field
The invention relates to the technical field of chemical coatings, in particular to a novel anti-pollution flashover coating with excellent comprehensive performance and a preparation method thereof.
Background
In the operation process of a power grid, the insulation capacity of the surface of the insulator is obviously reduced due to environmental pollution, so that flashover discharge (namely pollution flashover phenomenon) accidents on the surface of the insulator are caused, and serious loss is brought to industrial and agricultural production.
Room temperature vulcanized silicone Rubber (RTV) has good weather resistance, acid and alkali resistance and electrical characteristics, and is coated on the surface of an insulator for a long time to serve as an anti-pollution flashover insulating coating. However, the RTV coating is mainly focused on certain properties of materials for a long time, and the comprehensive properties (mechanical property, adhesive force, flame retardance and the like) of the RTV coating are low. The earlier established RTV coating standards are also too low and some indicators of necessity are not taken into account. This condition makes it unsuitable for domestic climates with severe pollution and complexity. In the process of popularization and application of the anti-pollution flashover coating, researchers have continuously formulated and perfected reasonable standards and technical conditions according to actual conditions so as to promote the overall specification and improvement of the anti-pollution flashover coating industry. With the continuous change of climate environment, the improvement of the comprehensive performance of the traditional anti-pollution flashover coating becomes an urgent task for the safe and stable operation of power transmission and transformation equipment.
In the prior art, there are also reports on new anti-pollution flashover coatings:
patent CN106118464A discloses a composition for an anti-pollution flashover coating and the anti-pollution flashover coating, wherein the composition comprises, by weight, 25-40 parts of hydroxyl-terminated polysiloxane, 5-15 parts of hydroxyl-terminated fluorine-containing polysiloxane, 6.0-8.0 parts of nano silicon dioxide, 2.5-3.5 parts of nano calcium carbonate, 4.8-5.5 parts of a cross-linking agent, 3.5-4.5 parts of a wetting agent, 0.8-1.3 parts of a silane coupling agent and 0.2-0.4 part of a catalyst. The coating has the characteristic of long-acting anti-pollution flashover, the hydrophobicity, the hydrophobic migration property, the tear strength, the shear strength, the acid and alkali resistance, the self-cleaning property and the aging property of the coating are greatly improved, the performance indexes are designed according to the actual operation requirements of power equipment and in combination with the development level of the organic silicon fluoride material, on the premise of ensuring the long-term anti-pollution flashover performance of the equipment, the requirements and the limitations on the operation and maintenance of the equipment can be reduced to the maximum extent, but the flame retardance of the coating needs to be further improved, and meanwhile, the environmental protection performance of the coating is reduced due to the use of the fluorine silicon material.
Patent CN106543895A discloses a novel anti-pollution flashover coating and a preparation method thereof, belonging to the technical field of electric power external insulation coatings. The novel anti-pollution flashover coating comprises the following components in parts by weight: 50-200 parts of hydroxyl-terminated polydimethylsiloxane, 5-50 parts of white carbon black, 10-60 parts of a flame retardant, 0-10 parts of pigment, 5-30 parts of a cross-linking agent, 0.01-10 parts of a catalyst, 50-600 parts of a diluent, 5-50 parts of a migration aid and 0-10 parts of a slow release agent. The invention solves the problem of poor migration performance of the traditional RTV coating at low temperature, has higher hydrophobicity, can realize intelligent regulation and control according to the environmental temperature, can be recycled, and is efficient and energy-saving. The invention mainly solves the problems of hydrophobic property and low-temperature mobility of the coating, and has low comprehensive properties such as flame retardance, self-cleaning property, adhesion capability and the like.
Disclosure of Invention
In order to solve the problems that the antifouling flashover coating in the prior art is mainly focused on one aspect of the performance of the material and has low comprehensive performance, the invention provides a novel antifouling flashover coating with excellent comprehensive performance and a preparation method thereof.
In order to solve the technical problems, the invention provides the following technical scheme:
on one hand, the invention provides a novel anti-pollution flashover coating which comprises the following components in parts by weight: 80-110 parts of base adhesive, 10-25 parts of white carbon black, 30-60 parts of flame retardant, 0.1-2 parts of flame retardant auxiliary agent, 5-15 parts of cross-linking agent, 50-250 parts of diluent, 0.1-20 parts of tackifier, 0.01-5 parts of catalyst and 0.01-5 parts of self-cleaning auxiliary agent;
the flame-retardant auxiliary agent is one or more metal complex solutions of platinum, palladium and rhodium.
Further, the novel anti-pollution flashover coating comprises the following components in parts by weight: 100-110 parts of base adhesive, 20-25 parts of white carbon black, 30-50 parts of flame retardant, 1-2 parts of flame retardant auxiliary agent, 10-15 parts of cross-linking agent, 150-250 parts of diluent, 10-20 parts of tackifier, 3-5 parts of catalyst and 2-5 parts of self-cleaning auxiliary agent,
the flame-retardant auxiliary agent is a platinum, palladium or rhodium complex solution coordinated by divinyl tetramethyl disiloxane.
Furthermore, the concentration of the flame retardant auxiliary agent is 2000-8000ppm, and the percentage of platinum, palladium or rhodium in the whole formula is 1-100 ppm.
Preferably, the tackifier is one or more of KH-791, KH-602 and KH-792.
Furthermore, the base adhesive is hydroxyl-terminated polydimethylsiloxane, and the viscosity is 2000-6000 mPa & s.
Further, the white carbon black is hydrophobic fumed silica, and the specific surface area is 100-400 m2/g。
Further, the flame retardant is modified aluminum hydroxide and/or modified magnesium hydroxide, and the particle size is 0.1-10 mu m.
Further, the cross-linking agent is one or more of methyl tributyl ketoxime silane, vinyl tributyl ketoxime silane and methyl triacetone hydroxyimino silane;
the diluent is one or more of toluene, xylene, dichloromethane, trichloromethane, ethyl acetate, acetone, butanone, tetrachloroethylene and petroleum ether;
the catalyst is dibutyltin dilaurate and/or stannous octoate;
the self-cleaning auxiliary agent is polyether modified organic silicon micromolecule.
Preferably, the self-cleaning additive is one or more of DY-ET116, DY-ET113, DY-ET103, DY-ET102A and DY-ET 101.
According to the invention, aluminum hydroxide and magnesium hydroxide are used as flame retardants, a platinum complex coordinated by divinyl tetramethyl disiloxane is used as a flame retardant aid, and the magnesium hydroxide in the flame retardants can make up for the defect that the flame retardant property of the material is reduced due to the lower decomposition temperature of the aluminum hydroxide. The platinum complex is used for catalyzing and degrading organic groups on the surface of siloxane through platinum to form a high-crosslinking net structure, and aluminum hydroxide and/or magnesium hydroxide are filled in pores of the net structure, so that the surface of the prepared coating is completely isolated from air, the flame retardant property of the coating is improved, the using amount of a flame retardant can be reduced, and the mechanical property of the composite material is improved.
In another aspect, the present invention further provides a preparation method of the above novel anti-pollution flashover coating, including:
step 1: adding the base rubber and the white carbon black into a kneader in batches, stirring for 30 minutes, adding the flame retardant, and stirring for 30 minutes to obtain a primary mixed rubber;
step 2: stirring the initial mixed rubber obtained in the step 1 at the temperature of 100-150 ℃ for 2-3 hours in vacuum, stopping heating, continuously vacuumizing to 50-60 ℃, and discharging to obtain mixed rubber;
and step 3: and (3) cooling the rubber compound obtained in the step (2), adding a diluent, a cross-linking agent, a silane coupling agent, a tackifier, a catalyst and a flame-retardant auxiliary agent, and dispersing at a high speed for 15-30 minutes to obtain the coating.
The invention provides a novel anti-pollution flashover coating and a preparation and use method thereof, and the novel anti-pollution flashover coating has the following beneficial effects:
1) the traditional method of using aluminum hydroxide, magnesium hydroxide and decabromodiphenyl ether as flame retardants is changed, and a very small amount of metal complex is matched with the aluminum hydroxide or the magnesium hydroxide to obtain the coating with the flame retardance of FV-0, so that the flame retardance of the coating is greatly improved;
2) on the basis of taking conventional monofunctional coupling agents KH-550, KH-560 and KH-570 as tackifiers, the bifunctional coupling agent is adopted as the tackifier, so that the adhesiveness of the cured coating and the substrate is improved;
3) polyether modified organic silicon is used as a self-cleaning additive, so that the self-cleaning property of the coating is improved, and the compatibility among all components of the coating is improved;
4) overcomes the situation that the comprehensive performance of the anti-pollution flashover coating is low for a long time, and all performance indexes of the coating meet the technical specifications of newly issued normal temperature curing silicon rubber anti-pollution flashover coating for insulators.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is given with reference to specific embodiments.
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
Materials, reagents and the like used in the following examples are commercially available.
The invention provides a novel anti-pollution flashover coating and a preparation method and a use method thereof, and the specific material dosage and the experimental process are shown in the following examples.
Example 1:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane (with viscosity of 3500mPa & s), 14 parts of fumed silica (Wake H30), 40 parts of modified aluminum hydroxide, 160 parts of toluene, 9 parts of methyl tributyl ketoxime silane, KH-7922 parts, 0.1 part of dibutyltin dilaurate, 1 part of divinyl tetramethyl disiloxane-coordinated platinum complex (0.3 wt%), and 0.3 part of polyether modified organic silicon.
The preparation method of the novel anti-pollution flashover coating comprises the following steps:
1) adding hydroxyl-terminated polydimethylsiloxane and white carbon black into a kneader in batches, stirring for 30 minutes, adding modified aluminum hydroxide, and stirring for 30 minutes to obtain a primary mixed rubber;
2) stirring the primarily mixed rubber obtained in the step 1 at 100-150 ℃ for 2-3 hours in vacuum, stopping heating, continuously vacuumizing to 50-60 ℃, and discharging to obtain mixed rubber;
3) and adding a diluent, a cross-linking agent, a tackifier, a catalyst, a flame-retardant auxiliary agent and a self-cleaning auxiliary agent into the rubber compound, and dispersing at a high speed for 15-30 minutes to obtain the coating.
Example 2:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 80 parts of hydroxyl-terminated polydimethylsiloxane (with the viscosity of 3500mPa & s), 10 parts of fumed silica (Wake H30), 30 parts of modified magnesium hydroxide, 50 parts of acetone, 5 parts of vinyl tributyrinoxime silane, KH-7910.1 parts, 0.01 part of stannous octoate, 0.1 part of divinyl tetramethyl disiloxane coordinated platinum complex (0.3 wt%), and 0.01 part of polyether modified organic silicon.
The preparation of the novel anti-fouling flashover coating is described in example 1.
Example 3:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane (viscosity of 3500mPa & s), 20 parts of fumed silica (Wake H30), 30 parts of modified magnesium hydroxide, 150 parts of acetone and butanone, 10 parts of methyl triacetone hydroxysilane, KH-60210 parts, 3 parts of stannous octoate, 1 part of divinyl tetramethyl disiloxane coordinated platinum complex (0.3 wt%), and 2 parts of polyether modified organosilicon.
The preparation of the novel anti-fouling flashover coating is described in example 1.
Example 4:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 110 parts of hydroxyl-terminated polydimethylsiloxane (with viscosity of 3500mPa & s), 25 parts of fumed silica (Wake H30), 50 parts of a mixture of modified aluminum hydroxide and modified magnesium hydroxide, 250 parts of dichloromethane, 15 parts of a mixture of methyl tributyrinoxime silane and methyl triacetoneximosilane, KH-79210 parts, KH-60210 parts, 5 parts of a mixture of stannous octoate and dibutyltin dilaurate, 2 parts of divinyl tetramethyl disiloxane coordinated platinum complex (0.3 wt%), and 5 parts of polyether modified silicone.
The preparation of the novel anti-fouling flashover coating is described in example 1.
Example 5:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 110 parts of hydroxyl-terminated polydimethylsiloxane (with the viscosity of 5000 mPas), 24 parts of fumed silica (Wake H30), 60 parts of modified aluminum hydroxide, 200 parts of ethyl acetate, 12 parts of methyl tributyl ketoxime silane, KH-79215 parts of dibutyltin dilaurate, 1.5 parts of divinyl tetramethyl disiloxane-coordinated platinum complex (0.3 wt%), and 4 parts of polyether modified organosilicon.
The preparation of the novel anti-fouling flashover coating is described in example 1.
Example 6:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane (with the viscosity of 5000 mPas), 14 parts of fumed silica (Wake H18), 40 parts of modified aluminum hydroxide, 160 parts of dimethylbenzene, 9 parts of crosslinking agent methyl tributyl ketoxime silane, KH-7921 parts of tackifier, KH-7911 parts, 0.1 part of dibutyltin dilaurate, 1 part of divinyl tetramethyl disiloxane coordinated platinum complex (0.3%), and 0.3 part of polyether modified organosilicon.
The preparation of the novel anti-fouling flashover coating is described in example 1.
Example 7:
a novel anti-pollution flashover coating comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane (viscosity of 3500mPa & s), 14 parts of fumed silica (Wake H30), 20 parts of modified aluminum hydroxide, 20 parts of modified magnesium hydroxide, 160 parts of petroleum ether, 9 parts of crosslinking agent methyl tributyroximosilane, KH-6020.5 parts of tackifier, KH-7921 parts, 0.1 part of dibutyltin dilaurate, 0.8 part of divinyl tetramethyl disiloxane coordinated platinum complex (0.3%), and 0.3 part of polyether modified silicone.
The preparation of the novel anti-fouling flashover coating is described in example 1.
For purposes of illustration, and to further illustrate the properties of the novel anti-fouling flashover coating prepared in accordance with the present invention, a comparative example was constructed as follows, using example 1 as an example only.
Comparative example 1:
this comparative example does not contain a divinyltetramethyldisiloxane complexed platinum complex, and the remaining conditions are the same as in example 1.
The preparation of the above coating was carried out in the same manner as in example 1.
Comparative example 2:
this comparative example was conducted under the same conditions as in example 1 except that the divinyltetramethyldisiloxane-coordinated platinum complex was replaced with an equal amount of decabromodiphenylether.
The preparation of the above coating was carried out in the same manner as in example 1.
Comparative example 3:
this comparative example was carried out under the same conditions as in example 1 except that KH-792 was replaced with an equal amount of KH-550.
The preparation of the above coating was carried out in the same manner as in example 1.
Comparative example 4:
this comparative example removed the polyether modified silicone and the remaining conditions were the same as in example 1.
The preparation of the above coating was carried out in the same manner as in example 1.
The anti-pollution flashover coatings prepared in the above examples 1 to 7 and comparative examples 1 to 4 were tested for mechanical properties, flammability, self-cleaning property, and the like, and the specific implementation method is shown in "room temperature curing silicone rubber anti-pollution flashover coating for DL/T-2012 insulator", and the test results are shown in table 1.
TABLE 1
As can be seen from Table 1, the novel anti-pollution flashover coating prepared by the invention has better mechanical property and self-cleaning property, and simultaneously has better flame retardant property. Compared with comparative examples 1-4, the novel anti-pollution flashover coating prepared by the invention is proved to have better performances in all aspects under the combined action of the flame-retardant auxiliary agent, the tackifier and the self-cleaning auxiliary agent.
In conclusion, the novel anti-pollution flashover coating prepared by the invention has better flame retardant property, mechanical property and self-cleaning property, and has excellent comprehensive performance.
The technical features of the embodiments described above may be arbitrarily combined, and for brevity and clarity of description, not all possible combinations of the technical features of the embodiments described above have been described, and it will be apparent to those skilled in the art that various modifications and refinements may be made without departing from the principle of the present invention, and these modifications and refinements should be regarded as the protection scope of the present invention.
Claims (7)
1. The novel anti-pollution flashover coating is characterized by comprising the following components in parts by weight: 80-110 parts of base adhesive, 10-25 parts of white carbon black, 30-60 parts of flame retardant, 0.1-2 parts of flame retardant auxiliary agent, 5-15 parts of cross-linking agent, 50-250 parts of diluent, 0.1-20 parts of tackifier, 0.01-5 parts of catalyst and 0.01-5 parts of self-cleaning auxiliary agent;
the flame-retardant auxiliary agent is a complex solution of platinum, palladium or rhodium coordinated by divinyltetramethyldisiloxane;
the tackifier is one or more of KH-602, KH-791 and KH-792;
the flame retardant is modified aluminum hydroxide and/or modified magnesium hydroxide, and the particle size is 0.1-10 mu m;
the cross-linking agent is one or more of methyl tributyl ketoxime silane, vinyl tributyl ketoxime silane and methyl triacetone ketoxime silane;
the diluent is one or more of toluene, xylene, dichloromethane, trichloromethane, ethyl acetate, acetone, butanone, tetrachloroethylene and petroleum ether;
the catalyst is dibutyltin dilaurate and/or stannous octoate;
the self-cleaning auxiliary agent is polyether modified organic silicon micromolecule.
2. The novel anti-pollution flashover coating material as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 100-110 parts of base adhesive, 20-25 parts of white carbon black, 30-50 parts of flame retardant, 1-2 parts of flame retardant auxiliary agent, 10-15 parts of cross-linking agent, 150 parts of diluent, 10-20 parts of tackifier, 3-5 parts of catalyst and 2-5 parts of self-cleaning auxiliary agent.
3. The novel anti-pollution flashover coating as claimed in claim 1 or 2, wherein the concentration of the flame retardant auxiliary agent is 2000-8000ppm, and the percentage of platinum, palladium or rhodium in the whole formulation is 1-100 ppm.
4. The novel anti-fouling flashover coating of claim 3, wherein the base adhesive is hydroxyl-terminated polydimethylsiloxane and has a viscosity of 2000 to 6000 mPa-s.
5. The novel anti-fouling flashover coating according to claim 1 or 2, wherein the white carbon black is hydrophobic fumed silica, and the specific surface area is 100-400 m2/g。
6. The novel anti-pollution flashover coating as claimed in claim 1, wherein the self-cleaning assistant is one or more of DY-ET116, DYET113, DY-ET103, DY-ET102A and DY-ET 101.
7. The process for preparing the novel anti-fouling flashover coating material according to any one of claims 1 to 6, which comprises:
step 1: adding the base rubber and the white carbon black into a kneader in batches, stirring for 30 minutes, adding the flame retardant, and stirring for 30 minutes to obtain a primary mixed rubber;
step 2: stirring the initial mixed rubber obtained in the step 1 at the temperature of 100-150 ℃ for 2-3 hours in vacuum, stopping heating, continuously vacuumizing to 50-60 ℃, and discharging to obtain mixed rubber;
and step 3: and (3) cooling the rubber compound obtained in the step (2), adding a diluent, a cross-linking agent, a tackifier, a catalyst, a flame-retardant auxiliary agent and a self-cleaning auxiliary agent, and dispersing at a high speed for 15-30 minutes to obtain the coating.
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| CN110804389A (en) * | 2018-08-06 | 2020-02-18 | 国网江西省电力有限公司电力科学研究院 | Room temperature vulcanized silicone rubber coating resistant to strong ultraviolet radiation and preparation method thereof |
| CN109627828A (en) * | 2018-12-26 | 2019-04-16 | 苏州浩纳新材料科技有限公司 | A kind of super hydrophobic coating of environmental protection flame retardant and preparation method thereof |
| CN110423552A (en) * | 2019-08-01 | 2019-11-08 | 北京国电富通科技发展有限责任公司 | A kind of selfreparing anti-pollution flashover coating, preparation method and application |
| CN110903756B (en) * | 2019-11-22 | 2022-03-11 | 国网江西省电力有限公司电力科学研究院 | Intelligent temperature-sensing color-changing RTV coating and preparation method thereof |
| CN111040622B (en) * | 2019-12-26 | 2022-07-12 | 辽宁华隆电力科技股份有限公司 | Super-voltage-resistant flame-retardant heat-conducting organic silicon insulating coating |
| CN114921181A (en) * | 2022-06-30 | 2022-08-19 | 镇江市江冠电器有限公司 | PRTV anti-pollution flashover coating for electrical products at room temperature and preparation process thereof |
| CN114940840A (en) * | 2022-06-30 | 2022-08-26 | 镇江市江冠电器有限公司 | Self-repairing PRTV coating for electrical products and preparation process thereof |
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| KR100853368B1 (en) * | 2001-07-26 | 2008-08-22 | 다우 코닝 도레이 캄파니 리미티드 | Room-temperature-curable organopolysiloxane composition |
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