Impact-resistant armored cable and preparation method thereof

Abstract

The invention relates to the technical field of cables, and provides an impact-resistant armored cable and a preparation method thereof.The impact-resistant armored cable comprises a conductor, an insulating layer, an armor layer and a sheath layer which are sequentially arranged from inside to outside; the sheath layer comprises the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 10-15 parts of chlorinated polyethylene, 8-10 parts of a plasticizer, 10-15 parts of a flame-retardant filler, 2-4 parts of a stabilizer, 1-1.5 parts of an antioxidant, 1-3 parts of a lubricant and 1-2 parts of a compatilizer; the chlorinated polyethylene is composed of first chlorinated polyethylene and second chlorinated polyethylene, and the first chlorinated polyethylene and the second chlorinated polyethylene are different in melt viscosity and shore hardness A. According to the technical scheme, the problem of poor impact resistance of the armored cable in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to an impact-resistant armored cable and a preparation method thereof. Background Art

[0002] The impact resistance of armored cable sheaths is in urgent need of improvement. Existing technologies often employ additives such as rubber and plastics to enhance the cable's impact resistance by adjusting the material's internal structure at the microscopic level. However, these methods only achieve limited performance improvements and fail to meet the high standards for impact resistance required of cables under complex operating conditions. Once the sheath is damaged by an impact, the external mechanical force can easily act directly on the armor and its internal structure. The sheath cannot effectively buffer the impact, and the armor may deform or even break, damaging the internal insulation and conductors. This can lead to a decrease or loss of the cable's electrical performance, causing serious problems such as short circuits and leakage.

[0003] Therefore, it is necessary to develop an armored cable with impact resistance. Summary of the Invention

[0004] The present invention provides an impact-resistant armored cable and a preparation method thereof, which solves the problem of poor impact resistance of armored cables in related technologies.

[0005] The technical solution of the present invention is as follows: The present invention provides an impact-resistant armored cable, comprising a conductor, an insulation layer, an armor layer and a sheath layer arranged in sequence from the inside to the outside, wherein the sheath layer comprises the following component raw materials in parts by weight: 100 parts of polyvinyl chloride, 10-15 parts of chlorinated polyethylene, 8-10 parts of plasticizer, 10-15 parts of flame-retardant filler, 2-4 parts of stabilizer, 1-1.5 parts of antioxidant, 1-3 parts of lubricant, and 1-2 parts of compatibilizer; the chlorinated polyethylene consists of a first chlorinated polyethylene and a second chlorinated polyethylene, and the first chlorinated polyethylene and the second chlorinated polyethylene have different melt viscosities and Shore A hardnesses.

[0006] In the present invention, the cable adopts a structure of conductor, insulation layer, armor layer and sheath layer arranged in sequence from the inside to the outside. The armor layer can provide mechanical protection for the cable and enhance the cable's ability to resist external force damage, while the sheath layer is in direct contact with the outside world and can further protect the internal structure. The two layers work together to provide double protection for the cable and effectively improve the overall impact resistance of the cable.

[0007] In the present invention, the armored cable uses polyvinyl chloride as the main matrix material. Polyvinyl chloride has the characteristics of high mechanical strength, good electrical insulation performance, excellent chemical stability, etc., and can provide basic structural support and insulation protection for the cable; chlorinated polyethylene has good chemical corrosion resistance and weather resistance. The addition of chlorinated polyethylene can enable the cable sheath to maintain stable performance under different climatic conditions; the addition of plasticizers, flame retardant fillers, stabilizers, antioxidants, lubricants, and compatibilizers comprehensively improves the performance of the cable sheath layer. The advantages of each raw material complement each other, ensuring the reliable use of the armored cable.

[0008] As a further technical solution, the conductor is made of copper.

[0009] In the present invention, the conductor material of the armored cable is copper. Copper has excellent electrical conductivity and low resistivity, which can greatly reduce the energy loss during current transmission, ensure that the cable transmits electric energy efficiently and stably, and improve the efficiency and economy of cable use. At the same time, copper has good mechanical properties, high strength and ductility, prevents conductor breakage, and can adapt to various complex installation environments and usage conditions, effectively enhancing the overall structural stability of the armored cable.

[0010] As a further technical solution, the material of the insulating layer is cross-linked polyethylene.

[0011] In the present invention, the insulation layer material of the armored cable is cross-linked polyethylene. Cross-linked polyethylene has extremely high insulation resistance, can effectively prevent current leakage, reduce the loss of electric energy during transmission, and improve the transmission efficiency of the cable; and its dielectric constant is low and the dielectric loss factor is small. Under the action of AC voltage, the dielectric loss generated is extremely small, which can effectively reduce the heating phenomenon of the cable, reduce the insulation aging speed caused by heating, and extend the service life of the cable; the cross-linked polyethylene material itself has certain elasticity and toughness, can effectively absorb and disperse external impact force, and enhance the overall impact resistance of the cable.

[0012] As a further technical solution, the material of the armor layer is steel strip.

[0013] In this invention, the armored cable's armor layer is made of steel tape, which has high strength and hardness, providing reliable mechanical protection for the cable. When the cable is impacted by an external object, the steel tape effectively absorbs and disperses the impact force, preventing it from directly impacting the internal conductor and insulation layer. This reduces the risk of damage to the cable due to impact and ensures the cable's normal operation in complex construction and use environments.

[0014] As a further technical solution, the melt viscosity of the first chlorinated polyethylene is 800 Pa·s and the Shore A hardness is 70; the melt viscosity of the second chlorinated polyethylene is 2400 Pa·s and the Shore A hardness is 60, and the mass ratio of the first chlorinated polyethylene to the second chlorinated polyethylene is 1:1~2.

[0015] In the present invention, two chlorinated polyethylenes with different melt viscosities are used in combination, which not only ensures that the material has good fluidity while maintaining a suitable molding state, thereby improving production efficiency and product quality stability, but also forms an effective energy absorption and dispersion mechanism. When the sheath layer is impacted, the chlorinated polyethylene molecular chains with low melt viscosity can quickly undergo elastic deformation due to their strong mobility, absorbing a portion of the impact energy. Relative movement and friction will occur between the chlorinated polyethylene molecular chains with high melt viscosity and low melt viscosity, and the friction will consume a portion of the energy. The chlorinated polyethylene with high melt viscosity can serve as a skeleton to provide certain support and stability, while the chlorinated polyethylene with low melt viscosity can fill the gaps in the high melt viscosity molecular chains, making the entire material system more uniform. When impacted, the uniform microstructure helps to more evenly disperse the impact stress throughout the entire material, avoiding local stress concentration. Therefore, the two chlorinated polyethylenes with different melt viscosities are used in combination to effectively transmit and disperse the impact stress, avoid material damage caused by stress concentration, and improve the impact resistance of the sheath layer.

[0016] In the present invention, two types of chlorinated polyethylene (CP) with different Shore A hardnesses work together to achieve a good balance between flexibility and hardness in the sheath. The first CP has a relatively high hardness, imparting a certain rigidity to the sheath, enabling it to resist certain external forces and friction, protecting the conductors, insulation, and armor within. The second CP, on the other hand, has a lower hardness and greater flexibility, making the sheath less susceptible to breakage under bending and twisting conditions, thereby improving the cable's installability and adaptability during use. When the cable is subjected to external impact, the second CP, with its lower hardness and higher flexibility, absorbs and disperses some of the force, acting as a buffer. The first CP, with its higher hardness, prevents the sheath from excessive deformation or damage due to the impact. The synergistic effect of these two CPs significantly enhances the sheath's impact resistance.

[0017] As a further technical solution, the flame retardant filler includes the following component raw materials in parts by weight: 20-30 parts of magnesium hydroxide, 30-35 parts of aluminum hydroxide, 10-15 parts of montmorillonite, and 5-7 parts of 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid.

[0018] In the present invention, aluminum hydroxide, magnesium hydroxide, montmorillonite and 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid are added to the flame retardant filler at the same time to exert a synergistic flame retardant mechanism. Magnesium hydroxide and aluminum hydroxide absorb a large amount of heat when thermally decomposed, reduce the temperature of the material surface, and thus inhibit the progress of combustion. At the same time, crystal water is released during the decomposition process, which dilutes the concentration of combustible gas and oxygen and plays a flame retardant role. Montmorillonite has a layered structure and can form a barrier layer during the combustion process to prevent the transfer of heat and oxygen, further inhibiting the spread of fire. 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid can enhance the dispersibility of other flame retardants, making them more evenly distributed in the sheath layer material, thereby more fully exerting their respective flame retardant effects, further improving the efficiency of the entire flame retardant system, and improving the flame retardant performance of the armored cable.

[0019] As a further technical solution, the preparation method of the flame retardant filler includes the following steps: dispersing 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid in anhydrous ethanol, adding magnesium hydroxide, aluminum hydroxide and montmorillonite, mixing and drying to obtain the flame retardant filler.

[0020] In the present invention, 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid is dispersed in anhydrous ethanol, magnesium hydroxide, aluminum hydroxide and montmorillonite are added, and the components are contacted and mixed in a certain amount to promote the combination of 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid with the magnesium hydroxide, aluminum hydroxide and montmorillonite, thereby enhancing the binding force between the components, enabling them to work better together during the combustion process and exerting a more excellent flame retardant effect.

[0021] In the present invention, in addition to enhancing the bonding strength between magnesium hydroxide, aluminum hydroxide and montmorillonite, the active carboxyl groups contained in 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid can also form a relatively stable structure with unstable chlorine atoms in the matrix material polyvinyl chloride, thereby delaying the aging process of the sheath layer material, forming hydrogen bonds with the chlorine atoms in chlorinated polyethylene, enhancing the compatibility of the flame retardant filler with the matrix material, making the flame retardant filler more stably and evenly dispersed in the matrix material, and further improving the flame retardant performance of the armored cable.

[0022] As a further technical solution, the mixing time is 2 hours.

[0023] As a further technical solution, the mass ratio of the magnesium hydroxide, aluminum hydroxide and montmorillonite to anhydrous ethanol is 1:1 to 5, for example, 1:1, 1:2, 1:3, 1:4, 1:5, preferably 1:3.

[0024] As a further technical solution, the plasticizer includes one or more of dioctyl phthalate, dibutyl phthalate, and dioctyl terephthalate, preferably dioctyl phthalate.

[0025] In the present invention, the addition of plasticizer can not only make the raw materials of the sheath layer easier to flow and form during the processing, reduce the processing difficulty and improve production efficiency, but also increase the softness, elasticity and ductility of the sheath layer material, making it more suitable for various application scenarios that require bending, folding or stretching; improve the ability of the sheath layer to resist external pressure, impact and wear, and extend its service life.

[0026] As a further technical solution, the stabilizer includes one or both of dibutyltin dilaurate and dibutyltin maleate.

[0027] In the present invention, during the processing and use of polyvinyl chloride, chlorine atoms on the molecular chain are easily detached when heated, resulting in a dehydrochlorination reaction, which leads to material degradation, discoloration and performance degradation. The addition of a stabilizer can capture the hydrogen chloride removed by the polyvinyl chloride and convert it into a stable compound, thereby inhibiting the thermal degradation reaction and extending the service life of the cable sheath layer in a high-temperature environment.

[0028] As a further technical solution, the antioxidant includes one or more of antioxidant 1010, antioxidant 1076, and antioxidant 168.

[0029] In the present invention, the addition of antioxidants can quickly react with free radicals generated in the sheath layer material due to factors such as light, high temperature, and oxygen, thereby preventing the oxidation reaction caused by the free radicals, and thereby slowing down the performance degradation of the sheath layer, so that it can still maintain good impact resistance, flexibility and tensile properties during long-term use, reducing problems such as material cracking and breakage caused by oxidation, and significantly extending the service life of the cable.

[0030] As a further technical solution, the lubricant includes one or both of zinc stearate and calcium stearate.

[0031] In the present invention, the addition of lubricant can not only promote the plasticization process of the base material, make the various raw material components more evenly mixed and dispersed during the processing process, reduce the friction between molecular chains, make the material easier to flow in molding processes such as extrusion and injection molding, and improve the processing efficiency and the impact resistance of the sheath; it can also improve the lubrication performance of the surface of the material and the processing equipment, reduce the adhesion between the material and the equipment, thereby reducing surface defects such as scratches, bubbles, burrs, etc. that occur during the processing process, and improve the surface quality and appearance quality of the cable sheath layer.

[0032] As a further technical solution, the compatibilizer includes one or both of maleic anhydride grafted polyethylene and ethylene-vinyl acetate copolymer, preferably maleic anhydride grafted polyethylene.

[0033] In the present invention, the addition of the compatibilizer can enhance the bonding force between the matrix materials, so that they can be better integrated together to form a uniform and stable system structure, which helps to improve the overall performance of the armored cable sheath layer.

[0034] The present invention also provides a method for preparing an impact-resistant armored cable, which is used to prepare the impact-resistant armored cable, comprising the following steps: S1. Extruding the insulating layer material outside the conductor to form an insulating layer, and wrapping the armor layer material around the insulating layer. Get semi-finished products; S2. Evenly mix the raw materials for the sheath layer, and extrude the raw materials onto the semi-finished product to obtain an armored cable.

[0035] The working principle and beneficial effects of the present invention are: In existing impact-resistant armored cables, additives are generally used to improve the impact resistance of the armored cable at a microscopic level. The chlorinated polyethylene in the present invention is composed of a first chlorinated polyethylene and a second chlorinated polyethylene with different melt viscosities and Shore A hardnesses, providing a more comprehensive and in-depth improvement in the impact resistance of the cable from the two aspects of optimizing the internal structure of the material and synergizing macroscopic performance. In the present invention, due to the different melt viscosities of the first chlorinated polyethylene and the second chlorinated polyethylene, the different flow characteristics of the two promote a more uniform internal structure of the material during material processing and molding, greatly reducing stress concentration points and making the sheath layer more stable in terms of microstructure. At the same time, the difference in Shore A hardness allows the sheath layer to achieve a clever combination of hardness and flexibility in terms of macroscopic performance. When facing external impact, the harder part can directly resist the invasion of the impact force, while the softer part effectively absorbs the impact energy through its own deformation. Through the combination of different chlorinated polyethylene characteristics, from optimizing the internal structure of the material to synergizing macroscopic performance, the impact resistance of the impact-resistant armored cable is further improved. DETAILED DESCRIPTION

[0036] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0037] In the following examples and comparative examples: Polyvinyl chloride: Model SG-2; First chlorinated polyethylene: melt viscosity 800 Pa·s, Shore A hardness 70, model CPE 3611P; Second chlorinated polyethylene: melt viscosity is 2400 Pa·s, Shore A hardness is 60, model is CPE 3615P; Magnesium hydroxide: average particle size is 8 μm; Aluminum hydroxide: average particle size is 1250 mesh; Montmorillonite: average particle size is 325 mesh; Maleic anhydride grafted polyethylene: model OREVAC 18390.

[0038] Example 1 A method for preparing an impact-resistant armored cable comprises the following steps: S1. Extruding cross-linked polyethylene on the outside of the conductor to form an insulating layer, and wrapping a steel strip around the insulating layer to obtain a semi-finished product; S2, 100 parts of polyvinyl chloride, 10 parts of chlorinated polyethylene, 8 parts of dioctyl phthalate, 10 parts of flame retardant filler, 2 parts of dibutyltin dilaurate, 1 part of antioxidant 1010, 1 part of zinc stearate, and 1 part of maleic anhydride grafted polyethylene were mixed evenly, and extruded onto the semi-finished product to obtain an armored cable; The chlorinated polyethylene is composed of a first chlorinated polyethylene and a second chlorinated polyethylene in a mass ratio of 1:1; The flame retardant filler comprises the following components in parts by weight: 20 parts of magnesium hydroxide, 30 parts of aluminum hydroxide and 10 parts of montmorillonite.

[0039] Example 2 A method for preparing an impact-resistant armored cable comprises the following steps: S1. Extruding cross-linked polyethylene on the outside of the conductor to form an insulating layer, and wrapping a steel strip around the insulating layer to obtain a semi-finished product; S2, 100 parts of polyvinyl chloride, 12 parts of chlorinated polyethylene, 9 parts of dioctyl phthalate, 12 parts of flame retardant filler, 3 parts of dibutyltin dilaurate, 1.2 parts of antioxidant 1076, 2 parts of zinc stearate, and 1.5 parts of maleic anhydride grafted polyethylene were mixed evenly, and extruded onto the semi-finished product to obtain an armored cable; The chlorinated polyethylene is composed of a first chlorinated polyethylene and a second chlorinated polyethylene in a mass ratio of 1:1; The flame retardant filler comprises the following components in parts by weight: 25 parts of magnesium hydroxide, 32 parts of aluminum hydroxide and 12 parts of montmorillonite.

[0040] Example 3 A method for preparing an impact-resistant armored cable comprises the following steps: S1. Extruding cross-linked polyethylene on the outside of the conductor to form an insulating layer, and wrapping a steel strip around the insulating layer to obtain a semi-finished product; S2. Evenly mix 100 parts of polyvinyl chloride, 15 parts of chlorinated polyethylene, 10 parts of dioctyl phthalate, 15 parts of flame retardant filler, 4 parts of dibutyltin maleate, 1.5 parts of antioxidant 168, 3 parts of calcium stearate, and 2 parts of maleic anhydride grafted polyethylene, and extrude the mixture onto the semi-finished product to obtain an armored cable; The chlorinated polyethylene is composed of a first chlorinated polyethylene and a second chlorinated polyethylene in a mass ratio of 1:1; The flame retardant filler comprises the following components in parts by weight: 30 parts of magnesium hydroxide, 35 parts of aluminum hydroxide and 15 parts of montmorillonite.

[0041] Example 4 Compared with Example 1, Example 4 is different in that the chlorinated polyethylene consists of a first chlorinated polyethylene and a second chlorinated polyethylene in a mass ratio of 1:2.

[0042] Example 5 The preparation method of the flame retardant filler comprises the following steps: dispersing 5 parts of 2-cyclopentanone carboxylic acid in 180 parts of anhydrous ethanol, adding 20 parts of magnesium hydroxide, 30 parts of aluminum hydroxide, and 10 parts of montmorillonite, mixing for 2 hours, and then drying to obtain the flame retardant filler; Compared with Example 4, the difference of Example 5 is that the flame retardant filler is replaced with an equal amount of the flame retardant filler obtained by the above preparation method.

[0043] Example 6 Compared with Example 5, the difference in Example 6 is that the amount of 2-cyclopentanonecarboxylic acid added is 7 parts.

[0044] Example 7 Compared with Example 6, Example 7 is different in that 2-cyclopentanonecarboxylic acid is replaced by an equal amount of 4-cyclopentanone-1,2-dicarboxylic acid.

[0045] Example 8 Compared with Example 6, Example 8 is different in that 2-cyclopentanonecarboxylic acid is replaced by an equal amount of 2-(1-hydroxypentyl)-1-cyclopentanone.

[0046] Example 9 Compared with Example 6, Example 9 is different in that 2-cyclopentanonecarboxylic acid is replaced by an equal amount of 2,2-dimethylcyclopentanone.

[0047] Comparative Example 1 Compared with Example 1, Comparative Example 1 is different in that the chlorinated polyethylene is only the first chlorinated polyethylene.

[0048] Comparative Example 2 Compared with Example 1, Comparative Example 2 is different in that the chlorinated polyethylene is only the second chlorinated polyethylene.

[0049] Experimental Example 1 The armored cables prepared in Examples 1 to 4 and Comparative Examples 1 to 2 were tested for their notched impact strength according to the test method specified in GB / T 1043.2-2018 "Determination of Impact Properties of Plastics - Part 2: Instrumented Impact Test". Specimen preparation: The sheath was cut along the axial direction of the cable to prepare a type 1 specimen, with a notch type of A, a lateral impact direction, and a temperature of 25°C.

[0050] The test results are shown in Table 1: Table 1 Performance test results of armored cables prepared in Examples 1 to 4 and Comparative Examples 1 to 2

[0051] It can be seen from Table 1 that when the first chlorinated polyethylene and the second chlorinated polyethylene are added at the same time, the impact resistance of the armored cable can be further improved.

[0052] Experimental Example 2 The armored cables prepared in Examples 4 to 9 were subjected to oxygen index testing according to the test method specified in GB / T 2406.2-2009 "Determination of Combustion Behavior of Plastics by Oxygen Index Method Part 2: Room Temperature Test". The sheath layer of the cable was cut open along the axial direction to prepare a sample. The sample shape was a Type IV sample with a sample size of 100 mm × 6 mm × 3 mm. The ignition method was the test method specified in Method A, and the oxygen index of the sample was tested.

[0053] The test results are shown in Table 2: Table 2 Performance test results of armored cables prepared in Examples 4 to 9

[0054] It can be seen from Table 2 that when 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid is added to the flame retardant filler, the flame retardant performance of the armored cable can be further improved.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An impact-resistant armored cable, characterized in that: The invention comprises a conductor, an insulating layer, an armor layer, and a sheath layer arranged in sequence from the inside out. The sheath layer comprises the following components in parts by weight: 100 parts of polyvinyl chloride, 10-15 parts of chlorinated polyethylene, 8-10 parts of a plasticizer, 10-15 parts of a flame retardant filler, 2-4 parts of a stabilizer, 1-1.5 parts of an antioxidant, 1-3 parts of a lubricant, and 1-2 parts of a compatibilizer. The chlorinated polyethylene comprises a first chlorinated polyethylene and a second chlorinated polyethylene, and the first chlorinated polyethylene and the second chlorinated polyethylene have different melt viscosities and Shore A hardnesses. The flame retardant filler comprises the following component raw materials in parts by weight: 20-30 parts of magnesium hydroxide, 30-35 parts of aluminum hydroxide, 10-15 parts of montmorillonite, and 5-7 parts of 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid.

2. The impact-resistant armored cable according to claim 1, characterized in that: The material of the conductor is copper.

3. The impact-resistant armored cable according to claim 1, characterized in that: The material of the insulating layer is cross-linked polyethylene.

4. The impact-resistant armored cable according to claim 1, characterized in that: The material of the armor layer is steel strip.

5. The impact-resistant armored cable according to claim 1, characterized in that: The melt viscosity of the first chlorinated polyethylene is 800 Pa·s and the Shore A hardness is 70; the melt viscosity of the second chlorinated polyethylene is 2400 Pa·s and the Shore A hardness is 60. The mass ratio of the first chlorinated polyethylene to the second chlorinated polyethylene is 1:1-2.

6. The impact-resistant armored cable according to claim 1, characterized in that: The preparation method of the flame retardant filler comprises the following steps: dispersing 4-cyclopentanone-1,2-dicarboxylic acid or 2-cyclopentanone carboxylic acid in anhydrous ethanol, adding magnesium hydroxide, aluminum hydroxide and montmorillonite, mixing and drying to obtain the flame retardant filler.

7. The impact-resistant armored cable according to claim 1, characterized in that: The plasticizer includes one or more of dioctyl phthalate, dibutyl phthalate, and dioctyl terephthalate; The stabilizer includes one or both of dibutyltin dilaurate and dibutyltin maleate; The antioxidant includes one or more of antioxidant 1010, antioxidant 1076, and antioxidant 168: The lubricant includes one or both of zinc stearate and calcium stearate; The compatibilizer includes one or both of maleic anhydride grafted polyethylene and ethylene-vinyl acetate copolymer.

8. A method for preparing an impact-resistant armored cable, for preparing an impact-resistant armored cable according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Extruding the insulating layer material outside the conductor to form an insulating layer, and wrapping the armor layer material around the insulating layer. Get semi-finished products; S2. Evenly mix the raw materials for the sheath layer, and extrude the raw materials onto the semi-finished product to obtain an armored cable.

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