High-wear-resistance charging cable sheath and production method of sheath material

Abstract

The invention discloses a high-wear-resistance charging cable sheath and a production method of a sheath material, and relates to the technical field of cables. Comprising a sheath layer, an arc-shaped groove structure and a nano silicon carbide coating which are sequentially arranged from inside to outside, and the sheath layer is prepared from 90-100 parts of polyurethane, 5-10 parts of a halogen-free flame retardant, 0.1-0.3 part of an antioxidant, 20-30 parts of filler, 0.1-0.3 part of a dispersing agent, 0.5-1 part of a lubricating agent and 0.2-2 parts of an anti-ultraviolet agent; the filler is silane modified acid etching carbon fiber, and is prepared by performing chemical etching on carbon fiber by using an acid etching medium and then performing silane functional modification by using amino functional polysiloxane. The charging cable sheath provided by the invention has excellent wear resistance and flame retardance, balances the relationship with mechanical properties, can adapt to frequent plugging and unplugging of a charging cable in use and friction between the cable and the ground, and prolongs the service life.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to a method for producing a high wear-resistant charging cable sheath and sheath material. Background Technology

[0002] Charging cables in new energy vehicles safely transfer electrical energy from charging stations or power outlets to the battery. They also facilitate data communication between the vehicle and charging equipment. During use, frequent plugging and unplugging can cause friction between the cable and the charging gun interface, charging station interface, and the ground. If the plugging and unplugging is forceful, the cable may experience repeated friction with rough objects like sand and gravel on the ground, or be run over by vehicle wheels, all of which can lead to wear and even damage to the cable sheath. Wear on the cable sheath reduces its insulation performance, and in humid environments, water can enter, causing short circuits and potentially leading to serious consequences such as electrical fires.

[0003] Therefore, abrasion resistance is an important performance characteristic of charging cables. Due to the common dragging and friction during use, the cable sheath layer will inevitably be worn. However, the existing charging cables have poor abrasion resistance and cannot meet the usage requirements, which greatly shortens the service life of the cables and poses potential hazards.

[0004] Furthermore, existing charging cables typically use polyester as the sheath material. Among polyester materials, TPU's abrasion resistance, flexibility, and bending properties make it one of the ideal outer sheath materials for new energy vehicle charging cables. However, TPU has poor flame retardant properties, with an oxygen index (LOI) of around 19%. It also exhibits drawbacks such as easy afterflame combustion, strong odor, and high smoke production. Even with the addition of flame retardants, its flame retardant performance is still insufficient. At the same time, existing charging cables cannot effectively balance the various properties, resulting in poor overall performance. Summary of the Invention

[0005] This invention aims to address the technical problems of poor wear resistance and flame retardancy, and unbalanced overall performance in existing charging cables. The goal is to provide a high-wear-resistant charging cable sheath and a method for producing the sheath material. This invention achieves excellent wear resistance and flame retardancy in the charging cable sheath while balancing mechanical properties. It can withstand frequent plugging and unplugging of the charging cable and friction between the cable and the ground, effectively preventing surface wear and internal structural damage during use, thus extending the cable's service life.

[0006] The present invention is achieved through the following technical solution.

[0007] The first objective of this invention is to provide a highly wear-resistant charging cable sheath, comprising: The sheath layer, wherein the sheath layer material comprises the following substances: 90-100 parts polyurethane, 5-10 parts halogen-free flame retardant, 0.1-0.3 parts antioxidant, 20-30 parts filler, 0.1-0.3 parts dispersant, 0.5-1 part lubricant, and 0.2-2 parts UV stabilizer; An arc-shaped groove structure is provided on the outer surface of the sheath layer; A nano-silicon carbide coating is applied to the surface of the arc-shaped groove structure; The filler refers to silane-modified acid-etched carbon fiber (marked as A-CF), which is prepared by chemically etching the carbon fiber with an acidic etching medium and then modifying it with amino-functionalized polysiloxane.

[0008] First, this invention uses silane-modified acid-etched carbon fiber as a filler to prepare the sheath layer. The carbon fiber is chemically etched using an acidic etching medium to form micron-level trenches on its surface, increasing the specific surface area. Then, amino-functionalized polysiloxane is used for silane functionalization modification, producing modified carbon fiber with high mechanical strength and wear resistance. The amino groups of this modified carbon fiber form hydrogen bonds with the carbonyl groups of polyurethane, thereby forming strong chemical bonds with the polyurethane matrix, enhancing the wear resistance of the cable sheath layer. Furthermore, the silane-modified acid-etched carbon fiber forms a three-dimensional reinforcing network in the polyurethane matrix, dispersing stress during wear and improving the cable's fatigue resistance. This allows it to withstand repeated loading and unloading (such as frequent plugging and unplugging and bending) without easily becoming damaged, further improving the wear resistance of the charging cable.

[0009] Secondly, silane-modified acid-etched carbon fibers can promote char formation during combustion, forming a dense carbon layer that isolates oxygen. The three-dimensional network skeleton can inhibit flame retardant migration and produce a synergistic effect with halogen-free flame retardants, thus improving flame retardancy compared to using only flame retardants.

[0010] Finally, the charging cable sheath of the present invention is a composite synergistic system formed by silane-modified acid-etched carbon fiber sheath body + arc-shaped groove structure + nano-silicon carbide coating; the sheath body improves wear resistance and flame retardancy by adding silane-modified acid-etched carbon fiber; the arc-shaped groove structure reduces the frictional contact area through stress dissipation, transforming drag friction into local deformation, reducing the effective contact area by more than 30%; the nano-silicon carbide coating is embedded in the arc-shaped groove to form a "mortise and tenon structure", directly resisting sand and gravel wear, and the arc groove of the arc-shaped groove structure acts as the anchor point of the coating, avoiding coating peeling problems caused by bending, so that the surface hardness (HV>120) and the bonding force with the substrate are synergistically improved, blocking the wear path.

[0011] Therefore, this invention improves the wear resistance of the main body by using silane-modified acid-etched carbon fiber sheath material, the groove disperses drag stress, and the coating shields against particle wear, so that the composite structure charging cable sheath has excellent wear resistance, flame retardancy and mechanical properties. It can adapt to the frequent plugging and unplugging of charging cables and the friction between the cable and the ground during use, prevent the surface of the cable from being worn during use and causing damage to the internal structure, and extend the service life.

[0012] Furthermore, the preparation method of the silane-modified acid-etched carbon fiber is as follows: Carbon fiber (CF) is mixed with an acidic etching medium and refluxed at 80-90°C for 1-2 hours. After cleaning and drying, acid-etched carbon fiber (CE-CF) is obtained. Acid-etched carbon fibers were immersed in an organic solvent of amino-functionalized polysiloxane, kept at 55-65℃ for 30-40 minutes, and then dried to obtain silane-modified acid-etched carbon fibers (A-CF).

[0013] Furthermore, the acidic etching medium is any one or more of HCl, HNO3, H2SO4, and CH3COOH.

[0014] Furthermore, the ratio of the carbon fiber to the acid etching medium is (0.2-0.5) g: (20-40) mL.

[0015] Furthermore, the organic solvent is any one or more of ethyl acetate, toluene, and xylene.

[0016] Furthermore, the halogen-free flame retardant is any one or more of phosphate esters, phosphonates, melamine and its derivatives, aluminum hydroxide, and magnesium hydroxide.

[0017] Furthermore, the antioxidant is any one or more of hindered phenolic antioxidants, phosphite antioxidants, and thioester antioxidants.

[0018] Further, the dispersant is any one or more of KH-550 and isopropyl tris(isostearoyl) titanate.

[0019] Furthermore, the lubricant is any one or more of butyl stearate, oleamide, and dimethyl silicone oil; the UV stabilizer is any one or more of UV-196, UV-1329, and UV-260.

[0020] The second objective of this invention is to provide a method for producing a high wear-resistant charging cable sheath material, comprising the following steps: Polyurethane, halogen-free flame retardant, antioxidant, filler, dispersant, lubricant and UV stabilizer are mixed in proportion by weight and then added to a high-speed mixer for melting and stirring to obtain a mixture; The obtained mixture is melt-blended and extruded using a twin-screw extruder, and then granulated using a high-speed pelletizer to obtain a high-wear-resistant charging cable sheath material.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects.

[0022] The present invention provides a composite sheath system consisting of an A-CF-containing sheath layer, an arc-shaped groove structure, and a nano-silicon carbide coating. The wear resistance of the sheath material is improved by using silane-modified acid-etched carbon fiber sheath material, the drag stress is dispersed by the groove, and the particle wear is shielded by the coating. This gives the composite structure of the charging cable sheath excellent wear resistance and flame retardancy, while balancing the relationship with mechanical properties. It can adapt to the frequent plugging and unplugging of the charging cable and the friction between the cable and the ground during use, preventing the surface of the cable from being worn and causing damage to the internal structure during use, thus extending the service life. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the structure of the charging cable sheath of the present invention.

[0024] The attached diagram shows the markings and corresponding component names: 1-Sheath layer, 2-Arc-shaped groove structure, 3-Nano silicon carbide coating. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0026] The following detailed description, with appropriate reference to the accompanying drawings, outlines an embodiment of the present invention: a high wear-resistant charging cable sheath and a method for producing the sheath material. However, unnecessary details may be omitted. For example, detailed descriptions of well-known facts and repetitive descriptions may be omitted. This is to avoid unnecessarily lengthy explanations and to facilitate understanding by those skilled in the art.

[0027] The "scope" disclosed in this invention is defined in the form of a lower limit and an upper limit. A given scope is defined by selecting a lower limit and an upper limit, which define the boundaries of the specific scope. The scope defined in this way can include or exclude end values, and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a scope.

[0028] Unless otherwise specified, all embodiments and optional embodiments of the present invention can be combined with each other to form new technical solutions.

[0029] Unless otherwise specified, all technical features and optional technical features of this invention can be combined to form new technical solutions.

[0030] Unless otherwise specified, the terms "comprising" and "including" as used in this invention can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other substances not listed may also be included, or that only the listed substances may be included.

[0031] Unless otherwise specified, all steps of the present invention may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0032] The technical solution of the present invention will be further described in detail below with reference to the embodiments.

[0033] It should be noted that, unless otherwise specified, the experimental methods used in the embodiments are conventional methods. Unless otherwise specified, the materials, reagents, methods, and instruments used are all conventional materials, reagents, methods, and instruments in the art, and can be obtained commercially by those skilled in the art.

[0034] Example 1 A method for producing a high wear-resistant charging cable sheath material includes the following steps: S1, Carbon fiber pretreatment and acid etching S11. Preliminary cleaning: The carbon fiber (CF) is washed in sequence with acetone, anhydrous ethanol and deionized water to remove surface adhering substances. After washing, it is placed in an oven to dry in the range of 80-100℃. S12, Acid etching activation: Mix dried CF (0.2-0.5g) with HCl (20-40mL) and reflux at 80-90℃ for 1-2 hours to introduce active groups on the fiber surface; S13. Post-treatment: The etched fibers are washed with a large amount of deionized water until neutral, and then transferred to a hot air circulating oven and dried at 100-110°C for about 1 hour to ensure that residual reaction reagents and by-products are completely removed. The product obtained in this step is called acid-etched carbon fiber (CE-CF).

[0035] S2, silane functionalization modification S21. Preparation of modified solution: Amino-functionalized polysiloxane was dissolved in 100 mL of organic solvent using APDMS and dispersed by ultrasonic (400 W) for 10 minutes to form a homogeneous solution; S22. Surface grafting: CE-CF is completely immersed in the above solution and kept at 60°C for 30 minutes to promote the chemical bonding of silane molecules on the fiber surface. S23. Curing and drying: Take out the fiber and place it in an oven at 80°C to dry and shape it, finally obtaining silane-modified acid-etched carbon fiber (A-CF).

[0036] S3, Material Mixing After drying 95 parts of TPU in a digital display forced-air drying oven at 80℃ for 6 hours, it was mixed with 7 parts of halogen-free flame retardant (aluminum hydroxide), 0.1 parts of antioxidant (hindered phenolic antioxidant), 20 parts of A-CF, 0.1 parts of dispersant (KH-550), 0.5 parts of lubricant (butyl stearate), and 0.5 parts of UV stabilizer (UV-196). The mixture was then added to a high-speed mixer and melt-stirred to obtain a mixture.

[0037] S4, Extrusion Granulation The mixture obtained in S3 is melt-blended and extruded using a twin-screw extruder, and then granulated using a high-speed pelletizer to obtain a high-wear-resistant charging cable sheath material.

[0038] Example 2 The difference between this embodiment and Embodiment 1 is that HNO3 is used to chemically etch the carbon fiber.

[0039] Example 3 The difference between this embodiment and Embodiment 1 is that H2SO4 is used to chemically etch the carbon fiber.

[0040] Example 4 The difference between this embodiment and Embodiment 1 is that CH3COOH is used to chemically etch the carbon fiber.

[0041] Comparative Example 1 The difference between this comparative example and Example 1 is that the filler is unmodified carbon fiber.

[0042] Comparative Example 2 The difference between this comparative example and Example 1 is that no filler is added.

[0043] The sheath materials prepared in Examples 1-4 and Comparative Examples 1-2 were subjected to performance tests. Tensile strength and elongation at break were tested according to the test methods in GB / T 2915.11-2008, abrasion was tested according to the test methods in ASTM D4060, and oxygen index was tested according to the test methods in GB / T 2406.3-2009. The test results are shown in Table 1.

[0044] Table 1. Performance test results of the sheath materials prepared in Examples 1-4 and Comparative Examples 1-2.

[0045] As can be seen from the data in Table 1: Comparative Example 2, without any filler, had a sheath material with a tensile strength of only 31.12 MPa, an abrasion rate as high as 31 mg / 1000 cycles, and an LOI of 22-24%, indicating that its mechanical strength, abrasion resistance, and flame retardancy could not meet the requirements of the charging cable under the conditions of frequent plugging and unplugging and friction dragging.

[0046] In Comparative Example 1, unmodified carbon fiber was introduced as a filler. Although the tensile strength of the sheath material was improved and the wear was reduced, the weak bonding between the carbon fiber and the matrix interface led to stress concentration and limited improvement in wear and flame retardancy. The wear was as high as 24 mg / 1000 times and the oxygen index (LOI) was low at 23-25%.

[0047] Examples 1-4 present comparative data under different acid etching types. The comparison shows that: HCl-modified fiber exhibits the best overall performance, with an abrasion loss of 18 mg / 1000 cycles and an LOI of 32-34%. It possesses high abrasion resistance and flame retardancy, along with high tensile strength and elongation at break, demonstrating excellent balance in all aspects and making it the most outstanding in terms of overall performance. This is because HCl gently etches uniform microgrooves on the fiber surface, increasing the specific surface area. Then, the amino groups of APDMS silane form hydrogen bonds with polyurethane groups, strengthening the interfacial bonding force and enabling efficient stress transfer to the high-strength fibers. As a result, the abrasion resistance and flame retardancy of the material are significantly improved, and the tensile strength is increased to over 40 MPa. Although the elongation at break is reduced to 416%, it still far exceeds the charging cable industry standard (which typically requires >300%), maintaining both high abrasion resistance and high flame retardancy while perfectly balancing the requirements for strength and flexibility.

[0048] HNO3 modification has the best wear resistance, but due to excessive etching causing fiber damage, although the wear resistance is further improved compared to HCl modification, the mechanical properties are significantly reduced, and the flame retardancy is also reduced to a certain extent, resulting in a poor overall performance balance. H2SO4 modification leads to an increase in fiber micropores due to its strong oxidizing properties. Compared with HCl modification, it slightly increases mechanical strength but slightly decreases wear resistance and flame retardancy, resulting in a poor overall performance balance.

[0049] CH3COOH modification has limited improvement in wear resistance and flame retardancy due to insufficient etching by weak acid, with wear reaching as high as 22 mg / 1000 cycles and a low oxygen index (LOI) of 28-30%.

[0050] To further verify the synergistic effect of silane-modified acid-etched carbon fiber A-CF (Example 1) and halogen-free flame retardant, flame retardant performance tests were conducted on sheath materials with different compositions. The test results are shown in Table 2.

[0051] Table 2. Flame retardant performance tests were conducted on sheath materials with different compositions.

[0052] As can be seen from the data in Table 2: The sheath material exhibits the best flame retardant effect when it contains both silane-modified acid-etched carbon fiber (A-CF) and halogen-free flame retardant: the oxygen index (LOI) reaches 32-34%, the vertical burning test achieves V-0 rating (self-extinguishing after flameout), the char formation rate increases to 35-40%, and the peak heat release rate is significantly reduced to 210 kW / m². 2 This is because the three-dimensional network structure of A-CF fixes the flame retardant particles, forming a dense carbon layer during combustion, effectively isolating oxygen and heat. Furthermore, acid etching of acidic sites on the carbon fiber surface (such as the -Cl groups introduced by HCl modification) catalyzes the decomposition of halogen-free flame retardants (such as aluminum hydroxide), promoting dehydration and char formation. Simultaneously, the silane-modified layer generates SiO2 at high temperatures, which combines with the decomposition products of the flame retardant (such as Al2O3), strengthening the carbon layer and inhibiting crack propagation. Thus, it is evident that A-CF and halogen-free flame retardants have a synergistic effect, significantly improving the flame retardant performance of charging cable sheaths. When only A-CF or only halogen-free flame retardant is added, the LOI and char rate are both low (28-30% and 26-28%, respectively), and the combustion performance only reaches V-1 or V-2 level; When unmodified carbon fiber is combined with halogen-free flame retardants, the flame retardant effect is the worst (LOI 23-25%, char rate 10-12%). This is because the surface of unmodified CF is smooth and inert, with poor bonding force with the polyurethane matrix, and it is easy to agglomerate and form local defects, which hinders the uniform dispersion of the flame retardant. As a result, the flame retardant cannot effectively migrate to the surface to form a protective layer during combustion. Since no active groups are introduced through acid etching, it cannot catalyze the decomposition of halogen-free flame retardants (such as aluminum hydroxide) into char, and it cannot form a dense composite char layer with flame retardant products (such as Al2O3). In addition, the high thermal conductivity of CF will accelerate heat transfer, offsetting the endothermic effect of the flame retardant. As a result, compared with adding only halogen-free flame retardants, the oxygen index (LOI) drops from 26-28% to 23-25%, and the vertical burning rating is V-2. This also shows that acid etching and silane modification are crucial to the flame retardant enhancement of carbon fiber.

[0053] Example 5 The sheath layer 1 of the charging cable is made using the sheath material prepared in Example 1 (HCl modification). An arc-shaped groove structure 2 is formed on the outer surface of the sheath layer 1, and a nano-silicon carbide coating 3 is then applied to the surface of the arc-shaped groove structure 2, thus forming a composite sheath layer structure: sheath layer 1 + arc-shaped groove structure 2 + nano-silicon carbide coating 3. Figure 1 As shown.

[0054] Comparative Example 3 The difference between this comparative example and Example 5 is that the nano-silicon carbide coating is not provided, so the composite sheath layer structure is: the sheath layer of Example 1 + arc-shaped groove structure.

[0055] Comparative Example 4 The difference between this comparative example and Example 5 is that the arc-shaped groove structure is not provided, so the composite sheath layer structure is: sheath layer of Example 1 + nano silicon carbide coating.

[0056] The performance of the composite sheath layer structures of Example 5, Comparative Examples 3 and 4 was tested, and the test results are shown in Table 3.

[0057] Table 3. Performance test results of the composite sheath layer structure in Examples 5, 3, and 4.

[0058] As can be seen from the data in Table 3: The sheath layer composite system, consisting of an A-CF-containing sheath layer, an arc-shaped groove structure, and a nano-silicon carbide coating, possesses both high wear resistance and flame retardancy, while also exhibiting strength and flexibility, resulting in excellent overall performance. This is achieved by enhancing the bonding force between the carbon fiber interface and the matrix through chemical modification, thereby improving wear resistance and flame retardancy. The arc-shaped groove structure disperses stress, and the nano-silicon carbide coating surface hardens. The arc-shaped grooves act as anchor points for the coating. This dual improvement method, combining interface chemical modification and physical structure enhancement, solves the problem of balancing wear resistance, flame retardancy, and mechanical strength in charging cable sheaths, providing reliable material protection for the charging safety of new energy vehicles.

[0059] Comparative Example 3, which did not have a nano-silicon carbide coating, showed a significantly increased wear compared to Example 5. This is because its surface was directly exposed to friction and could not resist scratches from sharp objects. Furthermore, this also affected its flame retardancy.

[0060] Comparative Example 4 did not have an arc-shaped groove structure, and the wear was significantly higher than that of Example 5. This is because the lack of a groove structure to disperse drag stress resulted in a larger contact area between the sheath composite structure and the ground. Furthermore, the lack of a groove structure to act as an anchor point for the coating caused local peeling of the coating due to bending, leading to a significant increase in wear.

[0061] In summary, the sheath layer composite system consisting of an A-CF-containing sheath layer, an arc-shaped groove structure, and a nano-silicon carbide coating provided by this invention can endow the charging cable sheath with excellent wear resistance and flame retardancy, while balancing the relationship with mechanical properties. It has excellent overall performance and can adapt to the frequent plugging and unplugging of the charging cable during use, as well as the friction between the cable and the ground, preventing the surface of the cable from being worn and causing damage to the internal structure during use, thus extending its service life.

[0062] Finally, it should be noted that the above specific embodiments are only used to describe the purpose, technical solution, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation of the present invention and is not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing specific embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions or improvements can be made to some or all of the technical features. These modifications, equivalent substitutions, and improvements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A highly wear-resistant charging cable sheath, characterized in that, include: The sheath layer, wherein the sheath layer material comprises the following substances: 90-100 parts polyurethane, 5-10 parts halogen-free flame retardant, 0.1-0.3 parts antioxidant, 20-30 parts filler, 0.1-0.3 parts dispersant, 0.5-1 part lubricant, and 0.2-2 parts UV stabilizer; An arc-shaped groove structure is provided on the outer surface of the sheath layer; A nano-silicon carbide coating is applied to the surface of the arc-shaped groove structure; The filler refers to silane-modified acid-etched carbon fiber, which is prepared by chemically etching the carbon fiber with an acidic etching medium and then modifying it with amino-functionalized polysiloxane.

2. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The preparation method of the silane-modified acid-etched carbon fiber is as follows: Carbon fiber is mixed with an acidic etching medium and refluxed at 80-90℃ for 1-2 hours. After cleaning and drying, acid-etched carbon fiber is obtained. Acid-etched carbon fibers were immersed in an organic solvent of amino-functionalized polysiloxane, kept at 55-65°C for 30-40 minutes, and then dried to obtain silane-modified acid-etched carbon fibers.

3. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The acidic etching medium is any one or more of HCl, HNO3, H2SO4, and CH3COOH.

4. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The ratio of carbon fiber to acid etching medium is (0.2-0.5) g: (20-40) mL.

5. The high wear-resistant charging cable sheath according to claim 2, characterized in that, The organic solvent is any one or more of ethyl acetate, toluene, and xylene.

6. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The halogen-free flame retardant is any one or more of phosphate esters, phosphonates, melamine and its derivatives, aluminum hydroxide, and magnesium hydroxide.

7. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The antioxidant is any one or more of hindered phenolic antioxidants, phosphite antioxidants, and thioester antioxidants.

8. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The dispersant is any one or more of KH-550 and isopropyl tris(isostearoyl) titanate.

9. The high wear-resistant charging cable sheath according to claim 1, characterized in that, The lubricant is any one or more of butyl stearate, oleamide, and dimethyl silicone oil; the UV protectant is any one or more of UV-196, UV-1329, and UV-260.

10. A method for producing a high wear-resistant charging cable sheath material, characterized in that, Includes the following steps: The polyurethane, halogen-free flame retardant, antioxidant, filler, dispersant, lubricant and UV stabilizer of any one of claims 1-9 are mixed in a weight ratio and then added to a high-speed mixer for melting and stirring to obtain a mixture; The obtained mixture is melt-blended and extruded using a twin-screw extruder, and then granulated using a high-speed pelletizer to obtain a high-wear-resistant charging cable sheath material.

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