CN113292857A - Heat-conducting gel containing whiskers and preparation method thereof - Google Patents
Heat-conducting gel containing whiskers and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of 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; Compositions of derivatives of such polymers
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Abstract
The invention discloses a whisker-containing heat-conducting gel and a preparation method thereof, wherein the whisker-containing heat-conducting gel is prepared from the following raw materials in parts by weight: 10 to 26 parts of silicone oil, 0.5 to 3.5 parts of vinyl silica gel, 30 to 50 parts of modified whisker/boron nitride powder, 5 to 15 parts of fumed silica, 10 to 20 parts of aluminum nitride, 0.3 to 6.5 parts of hydrogen-containing silicone oil, 1.2 to 4.8 parts of polydimethylmethylhydrosiloxane and 0.2 to 0.8 part of platinum-containing catalyst. The whisker-containing heat-conducting gel prepared by the invention has the advantages of fast curing time, excellent heat-conducting property, simple preparation method, easy operation of preparation process and high economic benefit, and is suitable for industrial production.
Description
Technical Field
The invention relates to the technical field of heat conduction materials, in particular to a whisker-containing heat conduction gel and a preparation method thereof.
Background
The heat conducting gel is a gel heat conducting material prepared by mixing, stirring and packaging silica gel composite heat conducting fillers. The heat-conducting gel inherits the advantages of good affinity, weather resistance, high and low temperature resistance, good insulativity and the like of the silica gel material, has strong plasticity, can meet the filling of uneven interfaces, and can meet the heat transfer requirements under various applications. The heat-conducting gel adopts a dispensing type design, is ejected out by a mixing nozzle during use, is convenient to use and can realize automatic production. The conventional heat-conducting gel material usually directly mixes the heat-conducting filler with the silicone oil, and the addition of a large amount of the heat-conducting filler not only increases the cost and the weight of the heat-conducting gel, but also reduces the interface wettability of the heat-conducting gel, and the heat-conducting property of the heat-conducting gel is difficult to ensure.
Chinese patent CN110330947A discloses a heat-conducting silica gel containing carbon nanotubes, which is characterized in that the heat-conducting silica gel is composed of vinyl silicone oil, side chain hydrogen-containing silicone oil, platinum catalyst and composite heat-conducting filler; the weight ratio of the composite heat-conducting filler to the heat-conducting gel is (35-90): 100, respectively; the composite heat-conducting filler consists of carbon nano tubes and conventional heat-conducting fillers, and the carbon nano tubes and the conventional heat-conducting fillers are uniformly dispersed in the vinyl silicone oil matrix and are pre-cured; the carbon nano tube accounts for 0.5-20% of the heat-conducting gel by weight. However, although the carbon-containing nanotubes added in the patent improve the heat conductivity, the dispersibility of the carbon-containing nanotubes in the silicone oil is poor, and the product quality is affected.
Disclosure of Invention
In view of the above, the present invention provides a whisker-containing thermal conductive gel and a preparation method thereof, so as to solve the above technical problems.
In order to achieve the purpose, the invention provides the following technical scheme: the raw materials for preparing the whisker-containing heat-conducting gel comprise the following components in parts by weight: 10 to 26 parts of silicone oil, 0.5 to 3.5 parts of vinyl silica gel, 30 to 50 parts of modified whisker/boron nitride powder, 5 to 15 parts of fumed silica, 10 to 20 parts of aluminum nitride, 0.3 to 6.5 parts of hydrogen-containing silicone oil, 1.2 to 4.8 parts of polydimethylmethylhydrosiloxane and 0.2 to 0.8 part of platinum-containing catalyst; the silicone oil is one or two of dimethyl silicone oil, vinyl-terminated polydimethylsiloxane and vinyl-terminated polymethylvinylsiloxane.
Wherein, the thixotropy is adjusted by adding fumed silica, and the thermal conductivity and the aging resistance of the thermal conductive gel are improved.
Further, the preparation method of the modified whisker/boron nitride powder comprises the following steps: dispersing boron nitride and polyvinylpyrrolidone into deionized water, and performing ultrasonic dispersion for 20-35 minutes to obtain a premixed solution; adding the whiskers into water, performing ultrasonic dispersion for 10 minutes, adding the premixed solution, homogenizing for 20-30 minutes by using a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours to obtain a mixture; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain whisker/boron nitride powder; calcining the whisker/boron nitride powder at 1650-1850 ℃ for 2 hours in an argon atmosphere to obtain the modified whisker/boron nitride powder.
Furthermore, the adding weight ratio of the boron nitride to the polyvinylpyrrolidone is 1: 1-5; the weight ratio of the boron nitride to the crystal whisker is 10: 0.5-3.
Further, the temperature of the hydrothermal treatment is 152-165 ℃.
Further, the specific surface area of the fumed silica is 180m 2/g-300 m 2/g.
Further, the platinum-containing catalyst is a mixture of chloroplatinic acid, olefin and organosiloxane.
Further, the raw materials for preparing the whisker-containing heat-conducting gel comprise the following components in parts by weight: 19 parts of silicone oil, 2.0 parts of vinyl silica gel, 40 parts of modified whisker/boron nitride powder, 10 parts of fumed silica, 15 parts of aluminum nitride, 3.4 parts of hydrogen-containing silicone oil, 3.0 parts of polydimethylmethylhydrosiloxane and 0.5 part of platinum-containing catalyst.
Another object of the present invention is to provide a method for preparing a whisker-containing thermally conductive gel, comprising the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing kneading for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing kneading for 30-50 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 15-25 minutes, and vacuumizing and exhausting bubbles to obtain the whisker-containing heat-conducting gel.
Further, in step S10, the operating temperature of the kneader is 150 ℃.
The technical scheme can show that the invention has the advantages that:
1. the whisker-containing heat-conducting gel prepared by the invention is added with modified whisker/boron nitride powder on the basis of silicone oil, a curing agent and a heat-conducting filler, and the whisker and the boron nitride are doped, so that the heat-conducting effect of the heat-conducting gel is improved, and meanwhile, the bonding force between the powder subjected to modification treatment and the silicone oil is stronger, and the prepared product has better dispersion uniformity;
2. the whisker-containing heat-conducting gel prepared by the invention has the advantages of fast curing time, excellent heat-conducting property, simple preparation method, easy operation of preparation process and high economic benefit, and is suitable for industrial production.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Example 1
Heat-conducting gel containing whiskers and preparation method thereof
Preparation of the aboveThe raw materials of the whisker-containing heat-conducting gel comprise: 19kg of silicone oil, 2.0kg of vinyl silica gel, 40kg of modified whisker/boron nitride powder, 10kg of fumed silica, 15kg of aluminum nitride, 3.4kg of hydrogen-containing silicone oil, 3.0kg of polydimethyl hydrogen siloxane and 0.5kg of platinum-containing catalyst; the silicone oil is dimethyl silicone oil; the specific surface area of the fumed silica is 240m2(ii)/g; the platinum-containing catalyst is a mixture of chloroplatinic acid, olefin and organosiloxane.
The preparation method of the modified whisker/boron nitride powder comprises the following steps: dispersing boron nitride and polyvinylpyrrolidone into deionized water in a weight ratio of 1:3, and performing ultrasonic dispersion for 25 minutes to obtain a premixed solution; adding the whiskers into water, ultrasonically dispersing for 10 minutes, adding the premixed liquid, homogenizing for 25 minutes by using a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours at 158 ℃ to obtain a mixture, wherein the weight ratio of boron nitride to the whiskers is 10: 1.7; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain whisker/boron nitride powder; calcining the whisker/boron nitride powder at 1750 ℃ for 2 hours in an argon atmosphere to obtain the modified whisker/boron nitride powder.
The preparation method of the whisker-containing heat-conducting gel comprises the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethyl hydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes at 150 ℃ to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing to knead for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing to knead for 40 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 20 minutes, and vacuumizing to discharge bubbles to obtain the whisker-containing heat-conducting gel.
Example 2
Heat-conducting gel containing whiskers and preparation method thereof
Preparation of the above-mentioned compositionThe material of the whisker heat-conducting gel comprises: 10kg of silicone oil, 0.5kg of vinyl silica gel, 30kg of modified whisker/boron nitride powder, 5kg of fumed silica, 10kg of aluminum nitride, 0.3kg of hydrogen-containing silicone oil, 1.2kg of polydimethylmethylhydrosiloxane and 0.2kg of platinum-containing catalyst; the silicone oil is vinyl-terminated polydimethylsiloxane; the specific surface area of the fumed silica is 180m2(ii)/g; the platinum-containing catalyst is a mixture of chloroplatinic acid, olefin and organosiloxane.
The preparation method of the modified whisker/boron nitride powder comprises the following steps: dispersing boron nitride and polyvinylpyrrolidone into deionized water in a weight ratio of 1:1, and performing ultrasonic dispersion for 20 minutes to obtain a premixed solution; adding the whiskers into water, ultrasonically dispersing for 10 minutes, adding the premixed liquid, homogenizing for 20 minutes by using a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours at 152 ℃ to obtain a mixture, wherein the weight ratio of boron nitride to the whiskers is 10: 0.5; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain whisker/boron nitride powder; calcining the whisker/boron nitride powder at 1650 ℃ for 2 hours in an argon atmosphere to obtain the modified whisker/boron nitride powder.
The preparation method of the whisker-containing heat-conducting gel comprises the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes at 150 ℃ to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing kneading for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing kneading for 30 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 15 minutes, and vacuumizing to discharge bubbles to obtain the whisker-containing heat-conducting gel.
Example 3
Heat-conducting gel containing whiskers and preparation method thereof
The raw materials for preparing the whisker-containing heat-conducting gel comprise: 26kg of silicone oil, 3.5kg of vinyl silica gel, 50kg of modified whisker/boron nitride powder, 15kg of fumed silica, 20kg of aluminum nitride, 6.5kg of hydrogen-containing silicone oil, 4.8kg of polydimethylmethylhydrosiloxane and 0.8kg of platinum-containing catalyst; the silicone oil is vinyl-terminated polymethylvinylsiloxane; the specific surface area of the fumed silica is 300m2(ii)/g; the platinum-containing catalyst is a mixture of chloroplatinic acid, olefin and organosiloxane.
The preparation method of the modified whisker/boron nitride powder comprises the following steps: dispersing boron nitride and polyvinylpyrrolidone into deionized water in a weight ratio of 1:5, and performing ultrasonic dispersion for 35 minutes to obtain a premixed solution; adding the whiskers into water, performing ultrasonic dispersion for 10 minutes, adding the premixed liquid, homogenizing for 30 minutes by using a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours at 165 ℃ to obtain a mixture, wherein the weight ratio of boron nitride to the whiskers is 10: 3; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain whisker/boron nitride powder; calcining the whisker/boron nitride powder at 1850 ℃ for 2 hours in an argon atmosphere to obtain the modified whisker/boron nitride powder.
The preparation method of the whisker-containing heat-conducting gel comprises the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes at 150 ℃ to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing to knead for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing to knead for 50 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 25 minutes, and vacuumizing and exhausting bubbles to obtain the whisker-containing heat-conducting gel.
Example 4
Heat-conducting gel containing whiskers and preparation method thereof
The raw materials for preparing the whisker-containing heat-conducting gel comprise: 15kg of silicone oil, 1.5kg of vinyl silica gel, 35kg of modified whisker/boron nitride powder, 12kg of fumed silica, 18kg of aluminum nitride, 5.0kg of hydrogen-containing silicone oil, 2.0kg of polydimethylmethylhydrosiloxane and 0.4kg of platinum-containing catalyst; the silicone oil is dimethyl silicone oil and vinyl-terminated polydimethylsiloxane which are mixed according to the weight ratio of 1: 2; the specific surface area of the fumed silica is 280m2/g。
The preparation method of the modified whisker/boron nitride powder comprises the following steps: dispersing boron nitride and polyvinylpyrrolidone into deionized water in a weight ratio of 1:4, and performing ultrasonic dispersion for 30 minutes to obtain a premixed solution; adding the whiskers into water, ultrasonically dispersing for 10 minutes, adding the premixed liquid, homogenizing for 25 minutes by using a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours at 155 ℃ to obtain a mixture, wherein the weight ratio of boron nitride to the whiskers is 10: 2.5; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain whisker/boron nitride powder; calcining the whisker/boron nitride powder at 1700 ℃ for 2 hours in an argon atmosphere to obtain the modified whisker/boron nitride powder.
The preparation method of the whisker-containing heat-conducting gel comprises the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes at 150 ℃ to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing to knead for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing to knead for 45 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 22 minutes, and vacuumizing and exhausting bubbles to obtain the whisker-containing heat-conducting gel.
Comparative example 1
Heat-conducting gel containing whiskers and preparation method thereof
The raw materials for preparing the whisker-containing heat-conducting gel comprise: 19kg of silicone oil, 2.0kg of vinyl silica gel, 40kg of boron nitride powder, 10kg of fumed silica, 15kg of aluminum nitride, 3.4kg of hydrogen-containing silicone oil, 3.0kg of polydimethylmethylhydrosiloxane and 0.5kg of platinum-containing catalyst; the silicone oil is dimethyl silicone oil; the specific surface area of the fumed silica is 240m2(ii)/g; the platinum-containing catalyst is a mixture of chloroplatinic acid, olefin and organosiloxane.
The preparation method of the modified whisker/boron nitride powder comprises the following steps: dispersing boron nitride and polyvinylpyrrolidone into deionized water in a weight ratio of 1:3, and performing ultrasonic dispersion for 25 minutes to obtain a premixed solution; homogenizing the premixed solution for 25 minutes by adopting a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours at 158 ℃ to obtain a mixture; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain boron nitride powder; calcining the whisker/boron nitride powder at 1750 ℃ for 2 hours in an argon atmosphere to obtain the boron nitride powder.
The preparation method of the whisker-containing heat-conducting gel comprises the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes at 150 ℃ to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing to knead for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing to knead for 40 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 20 minutes, and vacuumizing to discharge bubbles to obtain the whisker-containing heat-conducting gel.
Comparative example 2
Heat-conducting gel containing whiskers and preparation method thereof
The raw materials for preparing the whisker-containing heat-conducting gel comprise: 19kg of silicone oil, 2.0kg of vinyl silicone rubber and boron nitride40kg, 10kg of fumed silica, 15kg of aluminum nitride, 3.4kg of hydrogen-containing silicone oil, 3.0kg of polydimethylmethylhydrosiloxane and 0.5kg of platinum-containing catalyst; the silicone oil is dimethyl silicone oil; the specific surface area of the fumed silica is 240m2(ii)/g; the platinum-containing catalyst is a mixture of chloroplatinic acid, olefin and organosiloxane.
The boron nitride is the same as the boron nitride in the modified whisker/boron nitride powder prepared in the embodiment 1.
The preparation method of the whisker-containing heat-conducting gel comprises the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes at 150 ℃ to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing to knead for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing to knead for 40 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 20 minutes, and vacuumizing to discharge bubbles to obtain the whisker-containing heat-conducting gel.
Examples of the experiments
To further illustrate the technological advancement of the present invention, experiments are now taken to further illustrate it.
The experimental method comprises the following steps: the prepared heat-conducting gel was subjected to curing time and heat-conducting property tests, and the results are shown in table 1. Wherein the complete curing time is the time when the hardness of the heat-conducting gel does not change obviously within 1min under the environment of 25 ℃ and 50% relative humidity.
TABLE 1
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The whisker-containing heat-conducting gel is characterized in that raw materials for preparing the whisker-containing heat-conducting gel comprise, by weight: 10 to 26 parts of silicone oil, 0.5 to 3.5 parts of vinyl silica gel, 30 to 50 parts of modified whisker/boron nitride powder, 5 to 15 parts of fumed silica, 10 to 20 parts of aluminum nitride, 0.3 to 6.5 parts of hydrogen-containing silicone oil, 1.2 to 4.8 parts of polydimethylmethylhydrosiloxane and 0.2 to 0.8 part of platinum-containing catalyst.
2. The whisker-containing thermally conductive gel of claim 1, wherein the modified whisker/boron nitride powder is prepared by a method comprising: dispersing boron nitride and polyvinylpyrrolidone into deionized water, and performing ultrasonic dispersion for 20-35 minutes to obtain a premixed solution; adding the whiskers into water, performing ultrasonic dispersion for 10 minutes, adding the premixed solution, homogenizing for 20-30 minutes by using a homogenizer, adding potassium hydroxide, stirring and mixing, transferring to a hydrothermal kettle, and putting into an oven for hydrothermal treatment for 4 hours to obtain a mixture; soaking the mixture in water for 2 days, removing potassium hydroxide solution, and drying at room temperature to obtain whisker/boron nitride powder; calcining the whisker/boron nitride powder at 1650-1850 ℃ for 2 hours in an argon atmosphere to obtain the modified whisker/boron nitride powder.
3. The whisker-containing heat-conducting gel according to claim 2, wherein the addition weight ratio of the boron nitride to the polyvinylpyrrolidone is 1: 1-5; the weight ratio of the boron nitride to the crystal whisker is 10: 0.5-3.
4. The whisker-containing thermally conductive gel according to claim 2, wherein the temperature of the hydrothermal treatment is 152 to 165 ℃.
5. The whisker-containing of claim 1The heat-conducting gel is characterized in that the specific surface area of the fumed silica is 180m2/g～300m2/g。
6. The whisker-containing thermally conductive gel of claim 1, wherein the platinum-containing catalyst is a mixture of chloroplatinic acid, an olefin, and an organosiloxane.
7. The whisker-containing thermally conductive gel according to claim 1, characterized in that the raw materials for preparing the whisker-containing thermally conductive gel comprise, in parts by weight: 19 parts of silicone oil, 2.0 parts of vinyl silica gel, 40 parts of modified whisker/boron nitride powder, 10 parts of fumed silica, 15 parts of aluminum nitride, 3.4 parts of hydrogen-containing silicone oil, 3.0 parts of polydimethylmethylhydrosiloxane and 0.5 part of platinum-containing catalyst.
8. A preparation method of the whisker-containing heat-conducting gel according to any one of claims 1 to 7, characterized by comprising the following steps:
step S10, pouring the silicone oil, the vinyl silica gel, the hydrogen-containing silicone oil and the polydimethylmethylhydrogen siloxane in parts by weight into a kneader, and kneading for 5 minutes to obtain a primary mixture;
step S20, adding the modified whisker/boron nitride powder in parts by weight into the primary mixture, continuing kneading for 5 minutes, adding the fumed silica and aluminum nitride in parts by weight, and continuing kneading for 30-50 minutes;
and step S30, transferring the kneaded mixture to a planetary power stirrer, adding the platinum-containing catalyst in parts by weight, stirring and mixing for 15-25 minutes, and vacuumizing and exhausting bubbles to obtain the whisker-containing heat-conducting gel.
9. The production method according to claim 8, wherein in step S10, the operating temperature of the kneader is 150 ℃.
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| CN117264498A (en) * | 2023-09-26 | 2023-12-22 | 沈阳宏远电磁线股份有限公司 | Self-adhesive paint for transposed conductor and coating method thereof |
| CN117264498B (en) * | 2023-09-26 | 2024-03-12 | 沈阳宏远电磁线股份有限公司 | Self-adhesive paint for transposed conductor and coating method thereof |
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