Novel mixed insulator for coastal operation environment and preparation method thereof

Abstract

The invention discloses a novel mixed insulator for a coastal operation environment and a preparation method thereof, and relates to the field of insulators. The preparation method comprises the following steps: manufacturing a mold, controlling the thickness of the surface silicone rubber to be 1-8mm, and enabling the insulator to be a porcelain or glass insulator; carrying out surface treatment on the insulator by adopting a plasma jet technology; placing the insulator in the mold, injecting the high-temperature vulcanized silicone rubber banburying material into the mold, and curing and demolding to obtain the high-temperature vulcanized silicone rubber. A layer of high-temperature silicone rubber with a breakdown-resistant effect is vulcanized on the surface of the porcelain / glass insulator, hydrophobicity is improved, surface creepage density is reduced, electrochemical corrosion is reduced, the anti-pollution flashover performance of the composite insulator is combined, meanwhile, the excellent mechanical performance of the porcelain / glass insulator is reserved, and the operation requirements of insulators in coastal areas can be met.

Description

Technical Field

[0001] The invention relates to the field of insulators, and in particular to a novel hybrid insulator used in a coastal operating environment and a preparation method thereof. Background Art

[0002] With the rapid development of my country's economy, power grid construction has also entered a period of unprecedented development. At present, the overall scale has leaped to the forefront of the world. The power grid is divided into transmission lines and distribution lines according to the voltage level. In my country, transmission lines specifically refer to lines with a voltage level of 35kV and above, which are the main arteries of the power grid. As an important carrier in the operation of the power grid, the transmission line covers a wide area, the line distance is long, and the geographical conditions of the passing area are also complex and changeable. The safety and stability of the transmission grid is related to the overall economic and social development and the vital interests of the people. Insulators, as special insulating components, are an important part of the transmission line. They play the role of mechanical connection and electrical insulation in overhead transmission lines. Therefore, the operating condition of insulators has an extremely important impact on the safe operation of the power grid.

[0003] At present, there are three main types of transmission line insulators, namely porcelain insulators, glass insulators and composite insulators. Since porcelain insulators need to be tested for zero value and the maintenance workload is large, composite insulators and glass insulators are currently the main types used. However, composite insulators and glass insulators have frequent safety operation problems in recent years, exposing the shortcomings of the comprehensive performance of existing insulators themselves. Composite insulators have excellent anti-pollution flashover performance, but the problem of operation aging is prominent, and large-scale heating, breakdown and even string break failures occur frequently. Porcelain / glass insulators have reliable life but poor anti-pollution performance. When used in coastal areas, creepage defects often occur, and the risk of pollution flashover is high. In addition, the steel feet will rust and even drop strings. This is because the pollution flashover of porcelain / glass insulators is due to the hydrophilic surface of porcelain / glass materials. When soluble salts are deposited on their surface, a conductive film will be formed, resulting in a decrease in the effective creepage distance of the insulator, resulting in creepage defects. Summary of the invention

[0004] The present invention provides a novel hybrid insulator for use in coastal operating environments and a preparation method thereof, in order to solve the technical problem that current porcelain / glass insulators are prone to pollution flashover and steel foot corrosion. The present application improves the surface hydrophobicity of the porcelain / glass insulator and reduces surface creepage, thereby making the porcelain / glass insulator have excellent anti-pollution flashover and electrochemical corrosion performance.

[0005] In order to solve the above technical problems, one of the purposes of the present invention is to provide a method for preparing a new hybrid insulator for use in a coastal operating environment, comprising the following steps:

[0006] (1) Scanning the insulator with a laser scanning device to obtain the size information of the insulator, and then opening a mold according to the size information to make a mold, and controlling the thickness of the surface silicone rubber to be 1-8 mm. The insulator is a porcelain insulator or a glass insulator;

[0007] (2) Using plasma jet technology to treat the surface of insulators;

[0008] (3) placing the surface-treated insulator in the mold, injecting the high-temperature vulcanized silicone rubber mixture into the mold, and curing and demolding the insulator to obtain the insulator;

[0009] Wherein, the high temperature vulcanized silicone rubber mixing material comprises the following components in parts by weight:

[0010] Vinyl-terminated polymethylvinylsiloxane: 100-150 parts;

[0011] Aluminum hydroxide: 60-90 parts;

[0012] Nano-white carbon black: 20-30 parts;

[0013] Silane coupling agent: 4-6 parts;

[0014] Methyl silicone oil: 1-4 parts;

[0015] Vinyl silicone oil: 1-4 parts;

[0016] Hydroxy silicone oil: 1-4 parts;

[0017] Vulcanizing agent: 1-5 parts.

[0018] By adopting the above technical scheme, the present application vulcanizes a layer of silicone rubber on the surface of the porcelain / glass insulator. This is because when the insulator is running in coastal areas, soluble salts are deposited due to the hydrophilicity of the surface, forming a conductive film, which reduces the effective creepage distance of the insulator. The surface hydrophobicity of the porcelain / glass insulator is improved by using the surface vulcanized silicone rubber layer, which can reduce surface creepage and electrochemical corrosion. The new hybrid insulator combines the advantages of both glass insulators and composite insulators. While retaining the excellent mechanical properties of glass insulators, it also has the anti-pollution flashover performance of composite insulators, which can meet the requirements of insulators used in coastal areas for hydrophobic insulation and mechanical properties.

[0019] As a preferred embodiment, the molecular weight of the vinyl-terminated polymethylvinylsiloxane is 1000-10000 g / mol. The molecular weight will affect the fluidity after mixing. The molecular weight of the vinyl-terminated polymethylvinylsiloxane in the present application helps to improve the fluidity of the silicone rubber mixing material, which is beneficial for it to form a surface coating on the insulator in the mold.

[0020] As a preferred embodiment, the high temperature vulcanized silicone rubber internal mixing material further includes an inorganic filler, the mass ratio of the inorganic filler to the vinyl-terminated polymethylvinylsiloxane is (1-2):50, and the inorganic filler is a masterbatch and / or boehmite.

[0021] As a preferred solution, the mesh size of the inorganic filler is 500-5000 mesh, the mesh size of the aluminum hydroxide is 500-5000 mesh, and the particle size of the nano-white carbon black is 7-40 nm.

[0022] As a preferred embodiment, the aluminum hydroxide includes 500 mesh, 1250 mesh and 5000 mesh aluminum hydroxide in a mass ratio of 1:2:1.

[0023] As a preferred embodiment, the preparation method of the high-temperature vulcanized silicone rubber internal mixing material comprises the following steps: adding the vinyl-terminated polymethylvinylsiloxane into an internal mixing device, and then sequentially adding aluminum hydroxide, inorganic filler, silane coupling agent, methyl silicone oil, vinyl silicone oil, hydroxy silicone oil, and nano-white carbon black, mixing and stirring, cooling to room temperature, placing in a double-roll open mixing device for open mixing, adding a vulcanizing agent during the open mixing process, and obtaining the high-temperature vulcanized silicone rubber internal mixing material.

[0024] As a preferred embodiment, in the preparation method of the high-temperature vulcanized silicone rubber banburying material, the banburying temperature is 40-60° C., the stirring time is 8-10 h, and the rotation speed is 400-800 r / min.

[0025] As a preferred embodiment, in step (2), the voltage of the plasma jet is 10-15 kV, the frequency is 1-5 kHz, and the air flow rate is 40-50 m / s.

[0026] As a preferred embodiment, the vulcanizing agent is an organic peroxide.

[0027] As a preferred embodiment, the vulcanizing agent is at least one of 2,5-dimethyl-2,5-di-tert-butyl peroxide, diisopropylbenzene peroxide, and di-tert-butyl peroxide.

[0028] In order to solve the above technical problems, the second purpose of the present invention is to provide a new type of hybrid insulator for coastal operating environment prepared by the preparation method of the new type of hybrid insulator for coastal operating environment.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present application vulcanizes a layer of high-temperature silicone rubber with a breakdown-resistant effect on the surface of the porcelain / glass insulator, which can change the hydrophilicity of the insulator surface into hydrophobicity, avoid the formation of a conductive film composed of soluble salts on the surface, reduce the surface creepage density, have an anti-pollution flashover effect, and reduce electrochemical corrosion. That is, it combines the anti-pollution flashover performance of the composite insulator while retaining the excellent mechanical properties of the porcelain / glass insulator, which can meet the operating requirements of insulators in coastal areas.

[0031] 2. The present application pre-processes the plasma jet technology on the surface of the porcelain / glass insulator to produce etching and generate free radicals, thereby increasing the base area and interface bonding force between the silicone rubber material and the insulator surface, improving the bonding strength, avoiding shedding during operation, and improving the operating stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 : The maximum electric field strength and hydrophobicity test results of the steel legs of the insulators prepared in Examples 1-5 of the present invention and Comparative Example 3 are shown. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Preparation Example 1

[0035] A high-temperature vulcanized silicone rubber internal mixing material comprises 110kg of vinyl-terminated polymethylvinylsiloxane (Vi-PMVS), 80kg of aluminum hydroxide, 25kg of nano-white carbon black, 5kg of silane coupling agent, 2kg of methyl silicone oil, 2kg of vinyl silicone oil, 2kg of hydroxy silicone oil and 2kg of vulcanizing agent, wherein the aluminum hydroxide comprises 500 mesh, 1250 mesh and 5000 mesh aluminum hydroxide in a mass ratio of 1:2:1, the molecular weight of the vinyl-terminated polymethylvinylsiloxane is 8000g / mol, the vulcanizing agent is diisopropylbenzene peroxide, and the particle size of the nano-white carbon black is 20nm.

[0036] Preparation Example 2

[0037] A high-temperature vulcanized silicone rubber internal mixing material comprises 110kg of vinyl-terminated polymethylvinylsiloxane (Vi-PMVS), 80kg of aluminum hydroxide, 25kg of nano-white carbon black, 5kg of silane coupling agent, 2kg of methyl silicone oil, 2kg of vinyl silicone oil, 2kg of hydroxy silicone oil, 3kg of 2000-mesh masterbatch inorganic filler and 2kg of vulcanizing agent, wherein the aluminum hydroxide comprises 500-mesh, 1250-mesh and 5000-mesh aluminum hydroxide in a mass ratio of 1:2:1, the molecular weight of the vinyl-terminated polymethylvinylsiloxane is 8000g / mol, the vulcanizing agent is diisopropylbenzene peroxide, and the particle size of the nano-white carbon black is 20nm.

[0038] Preparation Example 3

[0039] A high-temperature vulcanized silicone rubber internal mixing material comprises 110kg of vinyl-terminated polymethylvinylsiloxane (Vi-PMVS), 80kg of aluminum hydroxide, 25kg of nano-white carbon black, 5kg of silane coupling agent, 2kg of methyl silicone oil, 2kg of vinyl silicone oil, 2kg of hydroxy silicone oil, 3kg of 2000-mesh boehmite inorganic filler and 2kg of vulcanizing agent, wherein the aluminum hydroxide comprises 500-mesh, 1250-mesh and 5000-mesh aluminum hydroxide in a mass ratio of 1:2:1, the molecular weight of the vinyl-terminated polymethylvinylsiloxane is 8000g / mol, the vulcanizing agent is diisopropylbenzene peroxide, and the particle size of the nano-white carbon black is 20nm.

[0040] Preparation Example 4

[0041] A high-temperature vulcanized silicone rubber internal mixing material comprises 110kg of vinyl-terminated polymethylvinylsiloxane (Vi-PMVS), 80kg of aluminum hydroxide, 25kg of nano-white carbon black, 5kg of silane coupling agent, 2kg of methyl silicone oil, 2kg of vinyl silicone oil, 2kg of hydroxy silicone oil, 3kg of 2000-mesh silica inorganic filler and 2kg of vulcanizing agent, wherein the aluminum hydroxide comprises 500-mesh, 1250-mesh and 5000-mesh aluminum hydroxide in a mass ratio of 1:2:1, the molecular weight of the vinyl-terminated polymethylvinylsiloxane is 8000g / mol, the vulcanizing agent is diisopropylbenzene peroxide, and the particle size of the nano-white carbon black is 20nm.

[0042] Preparation Example 5

[0043] A high-temperature vulcanized silicone rubber internal mixing material, wherein each step of the preparation method and the reagents and process parameters used in each step are the same as those in Preparation Example 1, except that the aluminum hydroxide is 5000 mesh aluminum hydroxide.

[0044] Preparation Example 6

[0045] A high-temperature vulcanized silicone rubber internal mixing material, wherein each step of the preparation method and the reagents and process parameters used in each step are the same as those in Preparation Example 1, except that the aluminum hydroxide is 500 mesh aluminum hydroxide.

[0046] The above-mentioned method for preparing a high-temperature vulcanized silicone rubber internal batch comprises the following steps:

[0047] Add terminal vinyl polymethylvinyl siloxane into an internal mixer, and then add aluminum hydroxide, inorganic filler, silane coupling agent, methyl silicone oil, vinyl silicone oil, hydroxy silicone oil and nano-white carbon black in sequence. Close the door of the internal mixer, stir at 50°C for 10 hours at a speed of 600r / min. After stirring, cool to room temperature and place in a double-roll open mill. Add vulcanizer during the mixing process to obtain a high-temperature vulcanized silicone rubber internal mixer.

[0048] Embodiment 1

[0049] A method for preparing a novel hybrid insulator for use in a coastal operating environment comprises the following steps:

[0050] (1) Scanning the glass insulator with a laser scanner to obtain the size information of the glass insulator, and then opening a mold according to the size information to make a mold, and controlling the thickness of the surface silicone rubber to be 1 mm;

[0051] (2) The surface of the glass insulator was treated by plasma jet technology for 5 minutes. The voltage of the plasma jet was 12.5 kV, the frequency was 4 kHz, and the air flow rate was 46 m / s.

[0052] (3) The surface-treated glass insulator is placed in a mold, and the high-temperature vulcanized silicone rubber mixture of Preparation Example 1 is injected into the mold. The mixture is cured at 110° C. and 15 MPa for 10 minutes, and then demolded to obtain the insulator.

[0053] Embodiment 2

[0054] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 1, except that in step (1), the thickness of the surface silicone rubber is controlled to be 2 mm.

[0055] Embodiment 3

[0056] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 1, except that in step (1), the thickness of the surface silicone rubber is controlled to be 3 mm.

[0057] Embodiment 4

[0058] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 1, except that in step (1), the thickness of the surface silicone rubber is controlled to be 4 mm.

[0059] Embodiment 5

[0060] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 1, except that in step (1), the thickness of the surface silicone rubber is controlled to be 5 mm.

[0061] Embodiment 6

[0062] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Preparation Example 2 is used.

[0063] Embodiment 7

[0064] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Preparation Example 3 is used.

[0065] Embodiment 8

[0066] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Preparation Example 4 is used.

[0067] Embodiment 9

[0068] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Preparation Example 5 is used.

[0069] Embodiment 10

[0070] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those of Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Preparation Example 6 is used.

[0071] Comparative Preparation Example 1

[0072] A high-temperature vulcanized silicone rubber internal mixing material, wherein each step of the preparation method and the reagents and process parameters used in each step are the same as those in Preparation Example 1, except that methyl silicone oil is replaced by ethyl silicone oil in an equal amount.

[0073] Comparative Preparation Example 2

[0074] A high-temperature vulcanized silicone rubber internal mixing material, wherein each step of the preparation method and the reagents and process parameters used in each step are the same as those in Preparation Example 1, except that hydroxy silicone oil is replaced by ethyl silicone oil in an equal amount.

[0075] Comparative Example 1

[0076] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Comparative Preparation Example 1 is used.

[0077] Comparative Example 2

[0078] A method for preparing a novel hybrid insulator for use in a coastal operating environment, wherein each step and the reagents and process parameters used in each step are the same as those in Example 2, except that in step (3), the high temperature vulcanized silicone rubber mixing material of Comparative Preparation Example 2 is used.

[0079] Comparative Example 3

[0080] A method for preparing an insulator for use in a coastal operating environment comprises the following steps:

[0081] (1) Scanning the glass insulator with a laser scanner to obtain the size information of the glass insulator, and then opening a mold according to the size information to make a mold, and controlling the thickness of the surface silicone rubber to be 1 mm;

[0082] (2) The glass insulator was surface treated by plasma jet technology for 5 minutes. The voltage of the plasma jet was 12.5 kV, the frequency was 4 kHz, and the air flow rate was 46 m / s to obtain the insulator.

[0083] Comparative Example 4

[0084] A method for preparing a novel hybrid insulator for use in a coastal operating environment comprises the following steps:

[0085] (1) Scanning the glass insulator with a laser scanner to obtain the size information of the glass insulator, and then opening a mold according to the size information to make a mold, and controlling the thickness of the surface silicone rubber to be 2 mm;

[0086] (2) A glass insulator is placed in a mold, and the high temperature vulcanized silicone rubber mixture of Preparation Example 1 is injected into the mold. The mixture is cured at 110° C. and 15 MPa for 10 minutes, and then demolded to obtain the insulator.

[0087] Performance testing

[0088] 1. Adhesion test: The adhesion test was performed on the insulators of the embodiment and the comparative example using the circle method standard in GB / T 1720. The test results are shown in Table 2 below.

[0089] 2. Dielectric loss factor: The dielectric loss factor of the insulators of the embodiment and the comparative example was measured with reference to GB / T1409-2006 standard, as follows: a circular silicone rubber test piece with a thickness of 1.5 mm and a diameter of 100 mm was prepared, and a dielectric loss test at an industrial frequency of 50 Hz was carried out using a plate-plate electrode system test platform. The industrial frequency voltage was adjusted and the dielectric loss tangent value tanδ was read after the data was stabilized. The test results are shown in Table 2 below.

[0090] 3. Maximum electric field strength of steel foot: After modeling, COMSOL software was used to simulate the maximum electric field strength of the steel foot of the insulator of the embodiment or the comparative example. The results are shown in Table 2 below. The results of Embodiments 1-5 and Comparative Example 3 are shown in Table 2 below. Figure 1 shown.

[0091] 4. Hydrophobicity: The hydrophobicity test of the insulator surface of the embodiment or comparative example was carried out according to the water spray classification method standard in GB / T24622-2022. HC1 corresponds to the hydrophobic state, HC7 corresponds to the hydrophilic state, and the different grade standards are shown in Table 1 below. The test results are shown in Table 2 below.

[0092] Table 1 - Different grades of hydrophobicity

[0093]

[0094] Table 2 - Performance test results of insulators obtained in the embodiments of the present application and the comparative examples

[0095]

[0096]

[0097] Combining Table 2 and Figure 1 From the comparison of the performance test results of Examples 1-5 and Comparative Example 3, it can be seen that since the rust on the steel feet of the glass insulator is closely related to the surface creepage, if surface creepage occurs, the leakage current increases and the electrochemical corrosion is more obvious. The present application vulcanizes a layer of compound silicone rubber on the surface of the glass insulator through a mold to change its surface properties from hydrophilic to hydrophobic, so that no conductive water film is generated on its surface, which can reduce surface creepage and thus reduce the leakage current of the insulator. The maximum electric field strength at the steel feet is reduced, thereby resisting electrochemical corrosion.

[0098] By comparing the performance test results of Example 2 and Comparative Examples 1-2 in Table 2, it can be seen that the methyl silicone oil and hydroxy silicone oil added to the high-temperature vulcanized silicone rubber of the present application can improve the adsorption and hydrogen bonding between the filler and the siloxane, improve the breakdown resistance of the silicone rubber and the insulator, and at the same time ensure that the hydrophobic effect of the silicone rubber meets a high level.

[0099] By comparing the performance test results of Example 2 and Comparative Example 4 in Table 2, it can be seen that the present application uses plasma jet technology to treat the surface of the glass insulator, which can clean the surface of the glass insulator, and at the same time produce etching and generate free radicals, further increase the contact area and interfacial adhesion, improve the adhesion of silicone rubber to the glass insulator, and avoid falling off during operation to affect the hydrophobic effect.

[0100] By comparing the performance test results of Examples 2 and 6-8 in Table 2, it can be seen that the present application can further improve the dielectric properties of the insulator by adding masterbatch or boehmite to the high temperature vulcanized silicone rubber compared with other inorganic fillers such as silica.

[0101] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing a new type of hybrid insulator for coastal operating environment, characterized in that: The following steps are involved: (1) Scanning the insulator with a laser scanning device to obtain the size information of the insulator, and then opening a mold according to the size information to make a mold, and controlling the thickness of the surface silicone rubber to be 1-8 mm. The insulator is a porcelain insulator or a glass insulator; (2) Using plasma jet technology to treat the surface of insulators; (3) placing the surface-treated insulator in the mold, injecting the high-temperature vulcanized silicone rubber mixture into the mold, and curing and demolding the insulator to obtain the insulator; Wherein, the high temperature vulcanized silicone rubber mixing material comprises the following components in parts by weight: Vinyl-terminated polymethylvinylsiloxane: 100-150 parts; Aluminum hydroxide: 60-90 parts; Nano-white carbon black: 20-30 parts; Silane coupling agent: 4-6 parts; Methyl silicone oil: 1-4 parts; Vinyl silicone oil: 1-4 parts; Hydroxy silicone oil: 1-4 parts; Vulcanizing agent: 1-5 parts.

2. A method for preparing a novel hybrid insulator for coastal operating environment according to claim 1, characterized in that: The molecular weight of the vinyl-terminated polymethylvinylsiloxane is 1000-10000 g / mol.

3. The method for preparing a novel hybrid insulator for coastal operating environment according to claim 1, characterized in that: The high temperature vulcanized silicone rubber also includes an inorganic filler, the mass ratio of the inorganic filler to the vinyl-terminated polymethylvinylsiloxane is (1-2):50, and the inorganic filler is a masterbatch and / or boehmite.

4. The method for preparing a novel hybrid insulator for coastal operating environment according to claim 3, characterized in that: The mesh number of the inorganic filler is 500-5000 mesh, the mesh number of the aluminum hydroxide is 500-5000 mesh, and the particle size of the nano-white carbon black is 7-40nm.

5. The method for preparing a novel hybrid insulator for coastal operating environment according to claim 1, characterized in that: The aluminum hydroxide includes 500 mesh, 1250 mesh and 5000 mesh aluminum hydroxide in a mass ratio of 1:2:

1.

6. A method for preparing a novel hybrid insulator for coastal operating environment as claimed in claim 3 or 4, characterized in that: The preparation method of the high-temperature vulcanized silicone rubber internal mixing material comprises the following steps: adding the vinyl-terminated polymethylvinylsiloxane into an internal mixing device, and then sequentially adding aluminum hydroxide, inorganic filler, silane coupling agent, methyl silicone oil, vinyl silicone oil, hydroxy silicone oil, and nano-white carbon black, mixing and stirring, cooling to room temperature, placing in a double-roll open mixing device for open mixing, adding a vulcanizing agent during the open mixing process, and obtaining the high-temperature vulcanized silicone rubber internal mixing material.

7. A method for preparing a novel hybrid insulator for coastal operating environment as claimed in claim 6, characterized in that: In the preparation method of the high-temperature vulcanized silicone rubber banburying material, the banburying temperature is 40-60° C., the stirring time is 8-10 hours, and the rotation speed is 400-800 r / min.

8. The method for preparing a novel hybrid insulator for coastal operating environment according to claim 1, characterized in that: In step (2), the voltage of the plasma jet is 10-15 kV, the frequency is 1-5 kHz, and the air flow rate is 40-50 m / s.

9. The method for preparing a novel hybrid insulator for coastal operating environment according to claim 1, characterized in that: The vulcanizing agent is an organic peroxide.

10. A new type of hybrid insulator for coastal operating environment prepared by the method for preparing a new type of hybrid insulator for coastal operating environment as claimed in any one of claims 1 to 9.

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