Corrosion-resistant anti-aging cable and preparation method thereof

Abstract

The invention discloses a corrosion-resistant anti-aging cable and a preparation method thereof, and relates to the technical field of cables. Ammonium oxalate is used as a swelling agent to pretreat hexagonal boron nitride, the effect of a gas intercalator is achieved through high-temperature treatment, then in the ball milling process, 2, 8-diamino azelaic acid is used for activating and modifying boron nitride, a boron nitride nano material is evenly dispersed in a high polymer material through amino of 2, 8-diamino azelaic acid, and the boron nitride nano material is prepared. Then nano-crystalline cellulose and modified boron nitride are used as fillers, and the nano-crystalline cellulose and the modified boron nitride are electrostatically assembled to form a composite heat-conducting material, so that the cable achieves the effect of high-temperature aging resistance, and meanwhile, the nano-crystalline cellulose and the modified boron nitride can construct a more compact labyrinth structure in a matrix to achieve the effect of corrosion resistance; and then blending with high-density polyethylene, silicone rubber, polyethylene grafted glycidyl methacrylate and polyaniline, thereby further enhancing the corrosion resistance and high-temperature aging resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and particularly to a corrosion-resistant and anti-aging cable and a preparation method thereof. Background Art

[0002] Currently, common cables generally consist of several parts such as a conductor, an insulating layer, a shielding layer, and a sheath layer. Among them, both the insulating layer and the sheath layer are composite materials prepared from high molecular polymers with very poor thermal conductivity. When the cable is in use, due to the existence of conductor resistance, a large amount of heat is generated. The resistance of high molecular polymers generally decreases with the increase in temperature. Therefore, when the temperature rises, the cable insulating layer is more likely to be broken down. However, the resistance of the conductor generally increases with the increase in temperature. When the temperature rises, the conductor resistance becomes larger, which will cause more energy consumption and generate more heat in power transmission. High molecular polymers working under high temperature for a long time are more likely to age, resulting in a significant deterioration of mechanical properties, affecting the service life of the cable and increasing the use risk of the cable. In recent years, due to the rapid development of industry, the industrial heavy pollution environment formed by harmful gas emissions and the unique marine environment around the ocean have led to a gradual increase in corrosive ions. The accidents caused by the corrosion of wires and cables have also gradually increased, seriously endangering the safety of transmission lines. In some areas, the operating life of aluminum conductors is even less than 6 years, causing great harm. After long-term use, the aluminum conductor is corroded, and pitting corrosion occurs most frequently. The longer the time, the deeper and more pits there are, and the greater the impact on the conductivity. After corrosion and then applying the same load as before, not only will the "line loss" increase, but also heat will be generated during the operation of the circuit, resulting in a temperature rise, and the temperature rise will promote corrosion, causing the corrosion to become more and more serious until the conductor is finally damaged, forming a vicious cycle. Summary of the Invention

[0003] The purpose of the present invention is to provide a corrosion-resistant and anti-aging cable and a preparation method thereof to solve the problems existing in the prior art.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A preparation method of a corrosion-resistant and anti-aging cable, comprising the following steps:

[0005] (1) Mix hexagonal boron nitride, ammonium oxalate, and N-methylpyrrolidone, ultrasonic at 21 kHz for 5 - 15 h, then heat up to 95 - 120 °C, stir at 200 - 300 rpm for 10 - 20 h, dry at 70 - 100 °C for 6 h, and then mix with 2,8-diaminononanedioic acid and 5 wt% sodium hydroxide aqueous solution, perform ball milling treatment, wash again with deionized water 4 - 8 times, and vacuum dry at 70 - 100 °C for 10 h to obtain modified silicon nitride;

[0006] (2) Mix nanocellulose, modified silicon nitride, and ethanol, and perform ultrasonic treatment at 21 kHz for 20 - 50 min. Then, while stirring at 500 - 1000 rpm, dropwise add N-methylpyrrolidone and continue stirring for 30 min. After that, filter, take the solid, and dry it under vacuum at 70 - 100 °C for 10 h to obtain the filler;

[0007] (3) Mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and the filler, and carry out mixing at 210 - 250 °C for 30 min. Then, add the compatibilizer and continue mixing for 1 - 2 h. Finally, extrude to obtain the cable material;

[0008] (4) Coating the cable material on the tinned conductor with a thickness of 0.8 - 2 mm, and covering it with a shielding layer woven from tinned copper wires and a protective layer made of the cable material to obtain the corrosion-resistant and anti-aging cable.

[0009] Further, the process parameters of the ball milling treatment in step (1) are as follows: the ball milling medium is zirconia grinding beads, the ball-to-material ratio is 4:1, the rotation speed is 300 - 500 rpm, and the time is 4 - 8 h.

[0010] Further, the mass ratio of hexagonal boron nitride, ammonium oxalate, N-methylpyrrolidone, 2,8-diaminononanoic acid, and 5 wt% sodium hydroxide aqueous solution in step (1) is 1:0.1:20:2:10.

[0011] Further, the vacuum degree of the vacuum drying in steps (1) and (2) is 100 Pa.

[0012] Further, the dropping rate of N-methylpyrrolidone in step (2) is 0.5 mL / s.

[0013] Further, the mass ratio of nanocellulose, modified silicon nitride, ethanol, and N-methylpyrrolidone in step (2) is 1:1 - 3:10 - 50:10.

[0014] Further, the process parameters of the extrusion in step (3) are as follows: the temperature is 260 °C, the pressure is 60 - 75 MPa, and the rotation speed is 60 rpm.

[0015] Further, the compatibilizer in step (3) is polyethylene grafted with glycidyl methacrylate.

[0016] Further, the mass ratio of high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, filler, and compatibilizer in step (3) is 50:5 - 20:0.1 - 0.5:0.08:0.1 - 1:0.02.

[0017] Further, the thickness of the shielding layer described in step (4) is 0.5 - 2 mm, and the thickness of the protective layer is 2 - 5 mm.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0019] First, ammonium oxalate is used as a swelling agent to pretreat hexagonal boron nitride. First, hexagonal boron nitride is infiltrated with an ammonium oxalate solution. The Lewis acid-base interaction between its anions and boron atoms in boron nitride weakens the interaction between adjacent layers of boron nitride, which is beneficial to the separation of nanomaterials. Then, through high-temperature treatment, ammonium oxalate is decomposed to produce a large amount of ammonia, carbon dioxide, and water vapor. These gases can easily penetrate between the hexagonal boron nitride lamellae and act as a gas intercalating agent. The internal pressure caused by gas expansion helps the interlayer of hexagonal boron nitride overcome the van der Waals force, making the subsequent mechanical peeling process easier. Then, in the ball milling process, 2,8-diaminononanoic acid is used to activate and modify boron nitride. Through mechanochemistry, the amino group at one end of 2,8-diaminononanoic acid interacts with the boron atoms of boron nitride again, enabling hexagonal boron nitride to be separated and gradually nanosized. Moreover, a carboxyl-containing organic compound is covered on the surface of boron nitride, and the repulsion generated by the carboxyl group and the long molecular chain of 2,8-diaminononanoic acid make the boron nitride nanomaterials uniformly dispersed in the polymer material.

[0020] Second, nanocellulose and modified boron nitride are used as fillers. The amino group on the modified boron nitride makes it positively charged when dispersed in ethanol, and the hydroxyl groups on the surface of cellulose are negatively charged. A composite thermal conductive material is formed through electrostatic assembly, and a thermal conductive network is formed in the matrix through their synergistic effect, thereby reducing the heat accumulation in the cable and enabling the cable to achieve the effect of high-temperature aging resistance. At the same time, nanocellulose and modified boron nitride can build a denser "labyrinth" structure in the matrix to hinder the penetration of acidic and alkaline media and delay the corrosion of the matrix by acidic and alkaline media, thereby enabling the cable to achieve the effect of corrosion resistance. Then, they are blended with high-density polyethylene, silicone rubber, polyethylene-grafted glycidyl methacrylate, and polyaniline. Among them, the epoxy group on polyethylene-grafted glycidyl methacrylate reacts with the amino group on the modified boron nitride, thereby enhancing the compatibility between the filler and the matrix and improving the corrosion resistance and aging resistance of the cable. Furthermore, the thermal conductive filler and polyaniline are effectively contacted, and a sea-sea system is formed between them, forming a continuous phase in the composite material, thereby further enhancing the thermal conductivity and high-temperature aging resistance of the matrix. Specific embodiments

[0021] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] To more clearly illustrate the method provided by the present invention, the following embodiments are used for detailed description. The test methods for each index of the corrosion-resistant and anti-aging cable manufactured in the following embodiments are as follows:

[0023] High temperature aging resistance: Samples of the same size from the examples and the comparative examples are subjected to air aging at 136 °C for 168 h, and the tensile strength retention rate and elongation at break retention rate of the samples are detected.

[0024] Corrosion resistance: Samples of the same size from the examples and the comparative examples are subjected to an acidic salt spray test with a salt spray water spraying tester of model XB-OTS-120 in accordance with GB / T 1040.3. Acetic acid is added to a 5 wt% sodium chloride aqueous solution to adjust the pH value of the solution to 3.2, and continuous spraying is carried out through a spraying device to allow the salt spray to settle on the samples to be tested, and the retention time of the surface not entering the corrosion state is observed. The temperature of the test chamber is set at 35 °C, the humidity is greater than 85%, and the fog deposition amount is set at 2 mL / h.

[0025] Example 1

[0026] (1) Mix hexagonal boron nitride, ammonium oxalate, and N-methylpyrrolidone, ultrasonicate at 21 kHz for 5 h, then heat up to 95 °C, stir at 200 rpm for 10 h, dry at 70 °C for 6 h, and then mix with 2,8-diaminononanedioic acid and a 5 wt% sodium hydroxide aqueous solution, and perform ball milling treatment. The process parameters are as follows: the ball milling medium is zirconia grinding beads, the ball-to-material ratio is 4:1, the rotation speed is 300 rpm, and the time is 4 h. Wash with deionized water 4 times again, and dry at 70 °C and a vacuum degree of 100 Pa for 10 h to obtain modified silicon nitride; the mass ratio of hexagonal boron nitride, ammonium oxalate, N-methylpyrrolidone, 2,8-diaminononanedioic acid, and 5 wt% sodium hydroxide aqueous solution is 1:0.1:20:2:10;

[0027] (2) Mix nanocellulose, modified silicon nitride, and ethanol, ultrasonicate at 21 kHz for 20 min, then while stirring at 500 rpm, dropwise add N-methylpyrrolidone at a rate of 0.5 mL / s, and continue stirring for 30 min, then filter, take the solid, and dry at 70 °C and a vacuum degree of 100 Pa for 10 h to obtain the filler; the mass ratio of nanocellulose, modified silicon nitride, ethanol, and N-methylpyrrolidone is 1:1:10:10;

[0028] (3) Mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and filler, and carry out kneading at 210°C for 30 minutes. Then add polyethylene graft glycidyl methacrylate and continue kneading for 1 hour. Finally, extrude with the following process parameters: temperature 260°C, pressure 60 MPa, rotation speed 60 rpm to obtain cable material; the mass ratio of high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, filler, and polyethylene graft glycidyl methacrylate is 50:5:0.1:0.08:0.1:0.02;

[0029] (4) Coating the cable material on the tinned conductor with a thickness of 0.8 mm, and covering it with a shielding layer with a thickness of 0.5 mm woven from tinned copper wire and a protective layer with a thickness of 2 mm made of cable material to obtain a corrosion-resistant and anti-aging cable.

[0030] Example 2

[0031] (1) Mix hexagonal boron nitride, ammonium oxalate, and N-methylpyrrolidone, and ultrasonicate at 21 kHz for 10 hours. Then heat up to 110°C and stir at 250 rpm for 15 hours, and dry at 85°C for 6 hours. Then mix with 2,8-diaminononanedioic acid and 5 wt% sodium hydroxide aqueous solution, and carry out ball milling treatment with the following process parameters: the ball milling medium is zirconia beads, the ball-to-material ratio is 4:1, the rotation speed is 400 rpm, and the time is 6 hours. Wash with deionized water 6 times again, and dry at 85°C and a vacuum degree of 100 Pa for 10 hours to obtain modified silicon nitride; the mass ratio of hexagonal boron nitride, ammonium oxalate, N-methylpyrrolidone, 2,8-diaminononanedioic acid, and 5 wt% sodium hydroxide aqueous solution is 1:0.1:20:2:10;

[0032] (2) Mix nanocellulose, modified silicon nitride, and ethanol, and ultrasonicate at 21 kHz for 35 minutes. Then while stirring at 750 rpm, dropwise add N-methylpyrrolidone at a rate of 0.5 mL / s and continue stirring for 30 minutes. Then filter and take the solid, and dry at 85°C and a vacuum degree of 100 Pa for 10 hours to obtain filler; the mass ratio of nanocellulose, modified silicon nitride, ethanol, and N-methylpyrrolidone is 1:2:30:10;

[0033] (3) Mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and filler, and conduct mixing at 230 °C for 30 min. Then add polyethylene graft glycidyl methacrylate and continue mixing for 1.5 h. Finally, extrude with the following process parameters: temperature 260 °C, pressure 67 MPa, rotation speed 60 rpm to obtain cable material; the mass ratio of the high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, filler, and polyethylene graft glycidyl methacrylate is 50:13:0.4:0.08:0.6:0.02;

[0034] (4) Coating the cable material on the tinned conductor with a thickness of 1.4 mm, and covering a shielding layer with a thickness of 1.3 mm woven from tinned copper wires and a protective layer with a thickness of 3.5 mm made of the cable material to obtain a corrosion-resistant and anti-aging cable.

[0035] Example 3

[0036] (1) Mix hexagonal boron nitride, ammonium oxalate, and N-methylpyrrolidone, and perform ultrasonic treatment at 21 kHz for 15 h. Then heat up to 120 °C, stir at 300 rpm for 20 h, dry at 100 °C for 6 h. Then mix with 2,8-diaminononanedioic acid and 5 wt% sodium hydroxide aqueous solution, and perform ball milling treatment with the following process parameters: the ball milling medium is zirconia grinding beads, the ball-to-material ratio is 4:1, the rotation speed is 500 rpm, and the time is 8 h. Wash with deionized water 8 times again, and dry at 100 °C and a vacuum degree of 100 Pa for 10 h to obtain modified silicon nitride; the mass ratio of the hexagonal boron nitride, ammonium oxalate, N-methylpyrrolidone, 2,8-diaminononanedioic acid, and 5 wt% sodium hydroxide aqueous solution is 1:0.1:20:2:10;

[0037] (2) Mix nanocellulose, modified silicon nitride, and ethanol, and perform ultrasonic treatment at 21 kHz for 50 min. Then while stirring at 1000 rpm, add N-methylpyrrolidone dropwise at a rate of 0.5 mL / s and continue stirring for 30 min. Then filter, take the solid, and dry at 100 °C and a vacuum degree of 100 Pa for 10 h to obtain filler; the mass ratio of the nanocellulose, modified silicon nitride, ethanol, and N-methylpyrrolidone is 1:3:50:10;

[0038] (3) Mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and filler, and conduct kneading at 250 °C for 30 min. Then add polyethylene graft glycidyl methacrylate and continue kneading for 2 h. Finally, extrude with the following process parameters: temperature 260 °C, pressure 75 MPa, and rotation speed 60 rpm to obtain cable material; the mass ratio of high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, filler, and polyethylene graft glycidyl methacrylate is 50:20:0.5:0.08:1:0.02;

[0039] (4) Coat the cable material on the tinned conductor with a thickness of 2 mm, and cover it with a shielding layer made of tinned copper wire braid with a thickness of 2 mm and a protective layer made of cable material with a thickness of 5 mm to obtain a corrosion-resistant and anti-aging cable.

[0040] Comparative Example 1

[0041] The difference between Comparative Example 1 and Example 2 is that step (1) is absent, and step (2) is changed to: mix nanocellulose, hexagonal boron nitride, and ethanol, ultrasonicate at 21 kHz for 35 min, then while stirring at 750 rpm, dropwise add N-methylpyrrolidone at a rate of 0.5 mL / s and continue stirring for 30 min, and then filter. Take the solid and dry it at 85 °C and a vacuum degree of 100 Pa for 10 h to obtain filler; the mass ratio of nanocellulose, hexagonal boron nitride, ethanol, and N-methylpyrrolidone is 1:2:30:10; the remaining steps are the same as in Example 2.

[0042] Comparative Example 2

[0043] The difference between Comparative Example 2 and Example 2 is that steps (1) and (2) are absent, and step (3) is changed to: mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and nanocellulose, and conduct kneading at 230 °C for 30 min. Then add polyethylene graft glycidyl methacrylate and continue kneading for 1.5 h. Finally, extrude with the following process parameters: temperature 260 °C, pressure 67 MPa, and rotation speed 60 rpm to obtain cable material; the mass ratio of high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, nanocellulose, and polyethylene graft glycidyl methacrylate is 50:13:0.4:0.08:0.6:0.02; the remaining steps are the same as in Example 2.

[0044] Comparative Example 3

[0045] The difference between Comparative Example 3 and Example 2 is that step (2) is absent, and step (3) is modified as follows: Mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and modified silicon nitride, and conduct mixing at 230 °C for 30 min. Then add polyethylene graft glycidyl methacrylate and continue mixing for 1.5 h. Finally, extrude with the following process parameters: temperature 260 °C, pressure 67 MPa, and rotation speed 60 rpm to obtain cable material; the mass ratio of the high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, modified silicon nitride, and polyethylene graft glycidyl methacrylate is 50:13:0.4:0.08:0.6:0.02; the remaining steps are the same as those in Example 2.

[0046] Effect Example

[0047] The performance analysis results of the corrosion-resistant and anti-aging cables using Examples 1 to 3 and Comparative Examples 1 to 3 of the present invention are given in Table 1 below.

[0048] Table 1

[0049]

[0050] From the comparison of the experimental data of the examples and comparative examples in Table 1, it can be found that using ammonium oxalate as a blowing agent to pretreat hexagonal boron nitride, the Lewis acid-base interaction between the anions in ammonium oxalate and the boron atoms in boron nitride weakens the interaction between adjacent layers of boron nitride, which is beneficial to the separation of nanomaterials. Then, through high-temperature treatment, the subsequent mechanical peeling process becomes easier. Then, in the ball milling process, 2,8-diaminononanoic acid is used to activate and modify boron nitride, promoting the separation of hexagonal boron nitride and its gradual nanocrystallization. And due to the repulsion generated by its carboxyl group and the long molecular chain of 2,8-diaminononanoic acid, the boron nitride nanomaterials are evenly dispersed in the polymer material. Then, using nanocellulose and modified boron nitride as fillers, the two form a composite thermal conductive material through electrostatic assembly, and a thermal conductive network is formed in the matrix through their synergistic effect, thereby reducing the heat accumulation in the cable, so that the cable achieves the effect of resisting high-temperature aging. At the same time, nanocellulose and modified boron nitride can construct a denser "labyrinth" structure in the matrix to hinder the infiltration of acidic and alkaline media and delay the corrosion of the matrix by acidic and alkaline media, so that the cable achieves the effect of corrosion resistance. Then, it is blended with high-density polyethylene, silicone rubber, polyethylene grafted glycidyl methacrylate, and polyaniline. Among them, the epoxy group on polyethylene grafted glycidyl methacrylate reacts with the amino group on the modified boron nitride, thereby enhancing the compatibility between the filler and the matrix and improving the corrosion resistance and anti-aging performance of the cable. Furthermore, the thermal conductive filler and polyaniline are effectively contacted, and a sea-sea system is formed between them, forming a continuous phase in the composite material, thereby further enhancing the thermal conductivity and high-temperature anti-aging performance of the matrix.

[0051] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. A preparation method of a corrosion-resistant and anti-aging cable, characterized in that It includes the following steps: (1) Mix hexagonal boron nitride, ammonium oxalate, and N-methylpyrrolidone, ultrasonic at 21 kHz for 5 - 15 h, then heat up to 95 - 120 °C, stir at 200 - 300 rpm for 10 - 20 h, dry at 70 - 100 °C for 6 h, and then mix with 2,8-diaminononanoic acid and 5 wt% sodium hydroxide aqueous solution, conduct ball milling treatment, wash with deionized water 4 - 8 times again, and vacuum dry at 70 - 100 °C for 10 h to obtain modified silicon nitride; (2) Mix nanocellulose, modified silicon nitride, and ethanol, ultrasonic at 21 kHz for 20 - 50 min, then while stirring at 500 - 1000 rpm, dropwise add N-methylpyrrolidone and continue stirring for 30 min, then filter, take the solid, and vacuum dry at 70 - 100 °C for 10 h to obtain the filler; (3) Mix high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, and the filler, conduct mixing and kneading at 210 - 250 °C for 30 min, then add a compatibilizer and continue mixing and kneading for 1 - 2 h, and finally extrude to obtain the cable material; (4) Coating the cable material on the tinned conductor with a thickness of 0.8 - 2 mm, and covering with a shielding layer woven by tinned copper wires and a protective layer made of the cable material to obtain a corrosion-resistant and anti-aging cable.

2. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The process parameters of the ball milling treatment in step (1): The ball milling medium is zirconia beads, the ball-to-material ratio is 4:1, the rotation speed is 300 - 500 rpm, and the time is 4 - 8 h.

3. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The mass ratio of the hexagonal boron nitride, ammonium oxalate, N-methylpyrrolidone, 2,8-diaminononanoic acid, and 5 wt% sodium hydroxide aqueous solution in step (1) is 1:0.1:20:2:

10.

4. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that The vacuum degree of the vacuum drying in steps (1) and (2) is 100 Pa.

5. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The dropping rate of the N-methylpyrrolidone in step (2) is 0.5 mL / s.

6. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The mass ratio of the nanocellulose, modified silicon nitride, ethanol, and N-methylpyrrolidone in step (2) is 1:1 - 3:10 - 50:

10.

7. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The process parameters of the extrusion in step (3): The temperature is 260 °C, the pressure is 60 - 75 MPa, and the rotation speed is 60 rpm.

8. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The compatibilizer in step (3) is polyethylene grafted with glycidyl methacrylate.

9. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, characterized in that, The mass ratio of the high-density polyethylene, methyl vinyl silicone rubber, polyaniline, antioxidant 1098, filler, and compatibilizer in step (3) is 50:5 - 20:0.1 - 0.5:0.08:0.1 - 1:0.

02.

10. The preparation method of a corrosion-resistant and anti-aging cable according to claim 1, wherein, The thickness of the shielding layer in step (4) is 0.5 - 2 mm, and the thickness of the protective layer is 2 - 5 mm.

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