Preparation method of high-flexible and high-torsion-resistant drag chain cable

Abstract

The application discloses a preparation method of a high-flexible anti-torsion drag chain cable, and at least comprises the following steps: forming an insulation layer on the surface of an online core, and forming a sheath layer on the surface of the insulation layer; the sheath layer comprises the following raw materials in parts by weight: 35-45 parts of high-density polyethylene, 25-35 parts of low-density polyethylene, 15-20 parts of ethylene-vinyl acetate copolymer, 10-15 parts of an additive, 0.8-1.3 parts of an antioxidant, 0.5-1 part of a lubricant and 5-8 parts of a filler. Beneficial effects: the application introduces an additive into the sheath layer, the unique benzoxazine ring structure of the additive is opened to form a crosslinked network at high temperature, effectively constrains the molecular chain slip, and enhances the anti-torsion stability and mechanical strength of the material. In addition, the additive also inhibits the performance attenuation under a high-temperature environment through the rigid support structure and heat-resistant characteristics, and simultaneously improves the flame-retardant performance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cables, and particularly relates to a preparation method of a high-flexibility and high-torsion-resistance drag chain cable. BACKGROUND

[0002] At present, drag chain cables are widely used in industrial automation, robot technology and mobile devices, and the performance of the drag chain cables directly determines the reliability and service life of the devices.

[0003] In the traditional drag chain cable, problems such as cracking of the sheath layer, wear of the insulation layer and fracture of the conductor are prone to occur under the working condition of frequent bending and torsion, which leads to premature failure of the cable. In the prior art, in order to improve the flexibility and torsion resistance of the cable, a high-elasticity material (such as TPU or TPE) is usually used as the sheath layer, or the mechanical properties are enhanced by optimizing the conductor stranding structure. However, these methods have obvious limitations: the high-elasticity material has good flexibility, but is prone to thermal aging under high temperature or long-term dynamic load, which leads to a decrease in mechanical properties; and the fatigue cracking of the sheath layer in the repeated torsion process cannot be fundamentally solved by simply relying on the optimization of the conductor structure. In addition, the flame retardance of the existing cable is often insufficient, which easily leads to safety hazards under high temperature or short circuit conditions. Some studies attempt to improve the performance by adding inorganic fillers or flame retardants, but these additives usually have poor compatibility with the matrix material, which easily leads to embrittlement of the sheath layer, and thus reduces the flexibility and durability of the cable.

[0004] Therefore, it is urgent to develop a new preparation method of a drag chain cable, which can have excellent mechanical strength, heat resistance and flame retardance while ensuring high flexibility and torsion resistance, so as to meet the long-term use requirements under complex working conditions. SUMMARY

[0005] The application aims to overcome the defects of the prior art and provides a preparation method of a high-flexibility and high-torsion-resistance drag chain cable.

[0006] The object of the application can be achieved by the following technical scheme.

[0007] The preparation method of the high-flexibility and high-torsion-resistance drag chain cable comprises the following steps: forming an insulation layer on the surface of a core, and forming a sheath layer on the surface of the insulation layer; the sheath layer comprises the following raw materials in parts by weight: 35-45 parts of high-density polyethylene, 25-35 parts of low-density polyethylene, 15-20 parts of ethylene-vinyl acetate copolymer, 10-15 parts of an additive, 0.8-1.3 parts of an antioxidant, 0.5-1 part of a lubricant and 5-8 parts of a filler.

[0008] More preferably, the preparation process of the additive is as follows.

[0009] S1: furoxan is cooled to 0℃, hydrochloric acid solution is slowly added dropwise, after the dropwise addition is completed, p-xylylene aldehyde is added, the temperature is raised to 40-50℃, and the reaction is carried out for 24h; after the reaction is completed, the pH is adjusted to 10, and filtration, washing and drying are carried out to obtain intermediate A;

[0010] S2: intermediate A, salicylaldehyde and N,N-dimethylformamide are mixed, and the mixture is reacted at 25℃ for 5-6h; after the reaction is completed, the mixture is poured into distilled water for precipitation, and after filtration and drying, the intermediate is transferred to a mixed solvent of dimethyl sulfoxide and ethanol, and then sodium borohydride is added in three portions; the reaction is carried out at room temperature for 6-7h, the reaction mixture is poured into distilled water for precipitation, and after standing and filtration, drying is carried out to obtain intermediate B;

[0011] S3: intermediate B, formaldehyde solution and chloroform are mixed, the temperature is raised to 60-70℃, and the reaction is carried out under reflux for 6-8h; after the reaction is completed, the organic layer is separated, washed, and then dried with anhydrous sodium sulfate overnight; the solvent is removed by rotary evaporation, and vacuum drying is carried out to obtain the additive.

[0012] In the scheme, the aldehyde group of p-xylylene aldehyde is protonated in the acidic environment provided by hydrochloric acid, which enhances its electrophilicity, so that it can react with furoxan molecules; the specific reaction process is as follows:

[0013]

[0014] More preferably, the raw materials for preparing the intermediate A include the following components: 36-38 parts by weight of furoxan, 150-160 parts by weight of hydrochloric acid solution, and 6-7 parts by weight of p-xylylene aldehyde; wherein the concentration of the hydrochloric acid solution is 6mol / L.

[0015] In the scheme, the nucleophilic reagent of the primary amine of intermediate A attacks the aldehyde group carbon atom of salicylaldehyde, and then under the reduction of sodium borohydride, intermediate B is obtained; the specific synthesis process is as follows:

[0016]

[0017] More preferably, the raw materials for preparing the intermediate B include the following components: 9-10 parts by weight of intermediate A, 10-11 parts by weight of salicylaldehyde, 100-120 parts by weight of N,N-dimethylformamide, 50-60 parts by weight of dimethyl sulfoxide, 50-60 parts by weight of ethanol, and 3-4 parts by weight of sodium borohydride.

[0018] In the scheme, first, the secondary amine structure of intermediate B is dehydrated with formaldehyde to form an imine, then the phenolic hydroxyl group acts as a strong activating group, making the ortho benzene ring carbon atom have high nucleophilicity, attacking the imine ion to undergo electrophilic substitution, finally, the oxygen atom of the phenolic hydroxyl group acts as a nucleophile, intramolecularly attacking the methylene carbon to undergo cyclization and deprotonation, and finally forming a six-membered benzoxazine ring, and the specific structure of the additive is as follows:

[0019]

[0020] More preferably, the raw materials for preparing the additive include the following components: 9-10 parts of intermediate B, 3-4 parts of formaldehyde solution, and 100-120 parts of chloroform by weight.

[0021] More preferably, the core is a conductive body composed of a plurality of copper-tin alloy wires twisted together.

[0022] More preferably, the insulating layer is one or more of styrene butadiene rubber, ethylene propylene rubber, and chloroprene rubber.

[0023] More preferably, the filler is one or more of carbon black, montmorillonite, and calcium carbonate.

[0024] More preferably, the lubricant is one or more of barium stearate, silicone oil, and polyethylene wax.

[0025] More preferably, the antioxidant is antioxidant 1035.

[0026] The beneficial effects of the present application are:

[0027] The introduction of the additive in the present application brings significant performance optimization: the benzoxazine ring contained therein undergoes ring-opening reaction at high temperature to generate active intermediates such as imine ions and carbonium ions, which not only form cross-linking between additive molecules, but also construct interpenetrating networks with the matrix through physical entanglement or weak chemical action, effectively constraining the slip of molecular chains during twisting, greatly improving the anti-twist stability of the material; at the same time, the rigid matrix in the additive is uniformly distributed in the matrix as a dispersed phase, forming a rigid support structure that can disperse stress concentration under external force and enhance the overall mechanical strength of the material; the heat resistance of the cross-linked network and the rigid structure itself can inhibit the excessive thermal motion of the matrix molecular chain in a high-temperature environment, reduce performance degradation, and enable the material to maintain stable anti-twist and structural strength in high-temperature working conditions.

[0028] At the same time, the three-dimensional network rigid structure can effectively slow down the thermal degradation rate of the polymer during the combustion process, reduce the generation and diffusion of flammable small molecule gas, and thus inhibit the spread of the flame. The high nitrogen content can decompose to produce non-combustible inert gas at high temperature, and the inert gas can dilute the oxygen and combustible gas around the flame, thereby playing a role of gas phase flame retardation. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment one: a preparation method of a high-flexible anti-torsion drag chain cable, comprising the following steps:

[0031] The copper-tin alloy wires are twisted into conductors to obtain a core, and then butadiene styrene rubber is used to extrude an insulating layer outside the core. Then, a sheath layer material is extruded to cover the surface of the insulating layer to form a sheath layer (wherein the process parameters of the extruder are: zone 1 150℃, zone 2 180℃, zone 3 220℃, zone 4 225℃, die head 230℃), thereby obtaining a high-flexible anti-torsion drag chain cable.

[0032] The preparation process of the sheath layer material is as follows:

[0033] 35 parts of high-density polyethylene, 25 parts of low-density polyethylene, 15 parts of ethylene-vinyl acetate copolymer, 10 parts of additives, 0.8 parts of antioxidant (antioxidant 1035), 0.5 parts of lubricant (polyethylene wax), and 5 parts of filler (carbon black) are put into a high-speed mixer, the mixing temperature is 100℃, and the mixing time is 5min. Then, the mixture is transferred into an internal mixer for mixing, the mixing temperature is 150℃, and the mixing time is 15min, thereby obtaining a mixed material. The mixed material is added into a twin-screw extruder for extrusion at 100℃, thereby obtaining a sheath layer material.

[0034] The preparation process of the additive is as follows:

[0035] S1: 36 parts of furfurylamine are cooled to 0℃, and 150 parts of hydrochloric acid solution (6mol / L) is slowly added dropwise. After the dropwise addition is completed, 6 parts of p-phenylenediamine is added, the temperature is raised to 40℃, and the reaction is carried out for 24h. After the reaction is completed, the pH is adjusted to 10, and then the mixture is filtered, washed, and dried, thereby obtaining an intermediate A.

[0036] S2: 9 parts of intermediate A, 10 parts of salicylaldehyde, 100 parts of N, N-dimethylformamide were mixed and reacted at 25℃ for 5h, after the reaction was completed, the mixture was poured into distilled water to precipitate, after drying by filtration, it was transferred to a mixed solvent of 50 parts of dimethyl sulfoxide and 50 parts of ethanol, then 3 parts of sodium borohydride was added in three portions, and the reaction was carried out at room temperature for 6h, the reaction mixture was poured into distilled water to precipitate, after standing, it was filtered and dried to obtain intermediate B;

[0037] S3: 9 parts of intermediate B, 3 parts of formaldehyde solution (concentration of 37wt%), 100 parts of chloroform were mixed, the temperature was raised to 60℃, and the reflux reaction was carried out for 6h, after the reaction was completed, the organic layer was separated, washed, and then dried with anhydrous sodium sulfate overnight, the solvent was removed by rotary evaporation, and vacuum drying was carried out to obtain the additive.

[0038] Example two: a preparation method of a high-soft anti-torsion drag chain cable, comprising the following steps:

[0039] The copper-tin alloy wires were twisted into conductors to obtain a core, and then butadiene styrene rubber was used to extrude and coat the core to form an insulation layer, and then a sheath layer material was extruded to coat the surface of the insulation layer to form a sheath layer (wherein the process parameters of the extruder are: zone 1 150℃, zone 2 180℃, zone 3 220℃, zone 4 225℃, die head 230℃), thereby obtaining a high-soft anti-torsion drag chain cable.

[0040] The preparation process of the sheath layer material is as follows:

[0041] 45 parts of high-density polyethylene, 35 parts of low-density polyethylene, 20 parts of ethylene-vinyl acetate copolymer, 15 parts of additive, 1.3 parts of antioxidant (antioxidant 1035), 1 part of lubricant (polyethylene wax), and 8 parts of filler (carbon black) were put into a high-speed mixer, the mixing temperature was 100℃, and the mixing time was 5min, then they were transferred into an internal mixer for mixing, the mixing temperature was 150℃, and the mixing time was 15min, thereby obtaining a mixed material; the mixed material was added into a twin-screw extruder for extrusion at 150℃, thereby obtaining the sheath layer material.

[0042] The preparation process of the additive is as follows:

[0043] S1: 38 parts of furfurylamine was cooled to 0℃, 160 parts of hydrochloric acid solution (6mol / L) was slowly added dropwise, after the dropwise addition was completed, 7 parts of p-phenylenediamine was added, the temperature was raised to 50℃, and the reaction was carried out for 24h, after the reaction was completed, the pH was adjusted to 10, and then it was filtered, washed, and dried to obtain intermediate A.

[0044] S2: 10 parts of intermediate A, 11 parts of salicylaldehyde, 120 parts of N, N-dimethylformamide were mixed and reacted at 25℃ for 6h, after the reaction was completed, the mixture was poured into distilled water to precipitate, after drying by filtration, it was transferred to a mixed solvent of 60 parts of dimethyl sulfoxide and 60 parts of ethanol, then 4 parts of sodium borohydride was added in three portions, and reacted at room temperature for 7h, the reaction mixture was poured into distilled water to precipitate, after standing, it was filtered and dried to obtain intermediate B;

[0045] S3: 10 parts of intermediate B, 4 parts of formaldehyde solution (concentration of 37wt%), 120 parts of chloroform were mixed, the temperature was raised to 70℃, and refluxed for 8h, after the reaction was completed, the organic layer was separated, washed, and then dried with anhydrous sodium sulfate overnight, the solvent was removed by rotary evaporation, and vacuum dried to obtain the additive.

[0046] Example three: a preparation method of a high-soft anti-torsion drag chain cable, comprising the following steps:

[0047] The copper-tin alloy wires were twisted into conductors to obtain a core, and then butadiene rubber was extruded on the core to form an insulation layer, and then a sheath layer material was extruded on the surface of the insulation layer to form a sheath layer (wherein the process parameters of the extruder are: zone 1 150℃, zone 2 180℃, zone 3 220℃, zone 4 225℃, die head 230℃), to obtain a high-soft anti-torsion drag chain cable; wherein the preparation process of the sheath layer material is:

[0048] 40 parts of high-density polyethylene, 30 parts of low-density polyethylene, 17.5 parts of ethylene-vinyl acetate copolymer, 12.5 parts of additive, 1.05 parts of antioxidant (antioxidant 1035), 0.75 parts of lubricant (polyethylene wax), 6.5 parts of filler (carbon black) were put into a high-speed mixer, the mixing temperature was 100℃, and the mixing time was 5min, then it was transferred into an internal mixer for mixing, the mixing temperature was 150℃, and the mixing time was 15min, to obtain a mixed material; the mixed material was added into a twin-screw extruder and extruded at 125℃ to obtain a sheath layer material;

[0049] Wherein, the preparation process of the additive is:

[0050] S1: 37 parts of furfurylamine was cooled to 0℃, 155 parts of hydrochloric acid solution (6mol / L) was slowly added dropwise, after the addition was completed, 6.5 parts of p-phenylenediamine was added, the temperature was raised to 45℃, and reacted for 24h, after the reaction was completed, the pH was adjusted to 10, filtered, washed and dried to obtain intermediate A;

[0051] S2: 9.5 parts of intermediate A, 10.5 parts of salicylaldehyde, 110 parts of N,N-dimethylformamide were mixed and reacted at 25°C for 5.5 h. After the reaction was completed, the mixture was poured into distilled water to precipitate, and after being dried by filtration, it was transferred to a mixed solvent of 55 parts of dimethyl sulfoxide and 55 parts of ethanol, and then 3.5 parts of sodium borohydride was added in three portions. The reaction was carried out at room temperature for 6.5 h. The reaction mixture was poured into distilled water to precipitate, and after standing, it was filtered and dried to obtain intermediate B;

[0052] S3: 9.5 parts of intermediate B, 3.5 parts of formaldehyde solution (concentration of 37 wt%), 110 parts of chloroform were mixed, and the temperature was raised to 65°C to reflux for 7 h. After the reaction was completed, the organic layer was separated, washed, and then dried with anhydrous sodium sulfate overnight. The solvent was removed by rotary evaporation, and vacuum drying was performed to obtain the additive.

[0053] Comparative Example 1: No additive was added, and the details are as follows:

[0054] The copper-tin alloy wires were twisted together to form a conductor to obtain a core, and then the butadiene styrene rubber was extruded around the core to form an insulation layer. Then, the sheath layer material was extruded and coated on the surface of the insulation layer to form a sheath layer, thereby obtaining a high-flexible and torsion-resistant towline cable.

[0055] The preparation process of the sheath layer material is as follows:

[0056] 40 parts of high-density polyethylene, 30 parts of low-density polyethylene, 17.5 parts of ethylene-vinyl acetate copolymer, 1.05 parts of antioxidant (antioxidant 1035), 0.75 parts of lubricant (polyethylene wax), and 6.5 parts of filler (carbon black) were put into a high-speed mixer, the mixing temperature was 100°C, and the mixing time was 5 min. Then, the mixture was transferred into a banbury mixer for banburying, and the banburying temperature was 150°C and the banburying time was 15 min to obtain a mixed material. The mixed material was extruded in a twin-screw extruder at 125°C to obtain the sheath layer material.

[0057] Comparative Example 2:

[0058] 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide was used instead of the additive, and the details are as follows:

[0059] The copper-tin alloy wires were twisted together to form a conductor to obtain a core, and then the butadiene styrene rubber was extruded around the core to form an insulation layer. Then, the sheath layer material was extruded and coated on the surface of the insulation layer to form a sheath layer, thereby obtaining a high-flexible and torsion-resistant towline cable.

[0060] The preparation process of the sheath layer material is as follows:

[0061] Put 40 parts of high-density polyethylene, 30 parts of low-density polyethylene, 17.5 parts of ethylene-vinyl acetate copolymer, 12.5 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 1.05 parts of antioxidant (antioxidant 1035), 0.75 parts of lubricant (polyethylene wax), 6.5 parts of filler (carbon black) into a high-speed mixer, the mixing temperature is 100℃, the mixing time is 5min, then transfer into an internal mixer for mixing, the mixing temperature is 150℃, the mixing time is 15min, to obtain a mixed material; the mixed material is added into a twin-screw extruder for extrusion at 125℃ to obtain a sheath layer material.

[0062] Detection test:

[0063] (1) The cable of the examples and the comparative examples was subjected to a torsion test at room temperature, and the test method referred to TICW / 01-2009 Appendix B, a total of 10,000 torsions were carried out, and whether it passed after the test was evaluated, and the evaluation standard was that there was no crack and distortion phenomenon on the surface of the sample;

[0064] (2) The tensile strength of the sheath layer of the cable of the examples and the comparative examples was tested according to the standard GB / T 1040.3-2006;

[0065] (3) The sheath layer of the cable prepared by the examples and the comparative examples was subjected to a heat aging test (aging at 120℃ for 168h), and then the tensile strength retention rate of the material after aging was detected;

[0066] (4) The sheath layer of the cable of the examples and the comparative examples was subjected to a high temperature test according to the standard GB / T 2406.3-2022, and the oxygen index was determined; the obtained data is shown in the following table:

[0067] Table 1

[0068]

[0069] Conclusion: The preparation method of the high-flex and torsion-resistant drag chain cable provided by the application significantly improves the performance of the cable by forming an insulation layer and a sheath layer on the surface of the online core and using a specific formula of sheath layer raw material. The introduction of the additive in the sheath layer is the key, and the unique benzoxazine ring structure of the additive forms a crosslinked network under high temperature, effectively constraining the molecular chain slip, enhancing the anti-torsion stability and mechanical strength of the material. In addition, the additive also suppresses the performance decay under high temperature environment through the rigid support structure and heat resistance, and improves the flame retardant performance.

[0070] The experimental data show that the cables of Examples 1 to 3 are significantly superior to the comparative examples in tensile strength, tensile strength retention rate, oxygen index and anti-twist performance. Specifically, the tensile strength of the examples reaches 27.5-28.1 MPa, which is much higher than 20.5 MPa of Comparative Example 1 and 18.5 MPa of Comparative Example 2; the tensile strength retention rate is between 86%-89%, while that of the comparative examples is only 65%-70%; the oxygen index reaches 32.2%-33.5%, which is significantly higher than 26.1%-28.5% of the comparative examples. After 10,000 times of twisting test, the cables of the examples do not appear cracks or deformation (pass the test), while the comparative examples do not pass the test.

[0071] In summary, the high-soft anti-twist drag chain cable prepared by the present application has excellent mechanical properties, heat resistance, anti-twist performance and flame retardance, and can meet the long-term use requirements under complex working conditions, solving the problem of easy failure of traditional drag chain cables under frequent bending and twisting working conditions.

[0072] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] The above is only an example and description of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as they do not deviate from the invention or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A method for preparing a highly flexible, torsion-resistant drag chain cable, characterized in that, At least comprising the following steps: forming an insulation layer on the surface of the core wire, and forming a sheath layer on the surface of the insulation layer; the sheath layer comprises the following raw materials by weight: 35-45 parts of high-density polyethylene, 25-35 parts of low-density polyethylene, 15-20 parts of ethylene-vinyl acetate copolymer, 10-15 parts of additives, 0.8-1.3 parts of antioxidant, 0.5-1 part of lubricant, and 5-8 parts of filler; The preparation process of the additive comprises the following steps: S1: cool furfurylamine to 0 DEG C, slowly drop hydrochloric acid solution, after dropping, add p-xylene glycol, increase temperature to 40-50 DEG C, react for 24 hours, after reaction, adjust pH to 10, filter, wash, dry, and obtain intermediate A; S2: mix intermediate A, salicylaldehyde and N,N-dimethylformamide, react for 5-6 hours at 25 DEG C, after reaction, pour the mixture into distilled water to precipitate, after filtration and drying, transfer to a mixed solvent of dimethyl sulfoxide and ethanol, then add sodium borohydride in three times, react for 6-7 hours at room temperature, pour the reaction mixture into distilled water to precipitate, after standing, filter, dry, and obtain intermediate B; S3: mix intermediate B, formaldehyde solution and chloroform, increase temperature to 60-70 DEG C, reflux for 6-8 hours, after reaction, separate organic layer, wash, then dry with anhydrous sodium sulfate overnight, remove solvent by rotary evaporation, and vacuum dry to obtain the additive.

2. The method for preparing a high-flexibility, anti-torsion drag chain cable according to claim 1, characterized in that, The preparation raw materials of the intermediate A comprise the following components: 36-38 parts of furfurylamine, 150-160 parts of hydrochloric acid solution, and 6-7 parts of p-xylene glycol by weight fraction; the concentration of the hydrochloric acid solution is 6 mol / L.

3. The method for preparing a highly flexible, anti-torsion drag chain cable according to claim 1, characterized in that, The preparation raw materials of the intermediate B comprise the following components: 9-10 parts of intermediate A, 10-11 parts of salicylaldehyde, 100-120 parts of N,N-dimethylformamide, 50-60 parts of dimethyl sulfoxide, 50-60 parts of ethanol, and 3-4 parts of sodium borohydride by weight fraction.

4. The method for preparing a highly flexible, anti-torsion drag chain cable according to claim 1, characterized in that, The preparation raw materials of the additive comprise the following components: 9-10 parts of intermediate B, 3-4 parts of formaldehyde solution, and 100-120 parts of chloroform by weight fraction; the concentration of the formaldehyde solution is 37 wt%.

5. The method for preparing a highly flexible, anti-torsion drag chain cable according to claim 1, characterized in that, The core wire is a conductor composed of a plurality of copper-tin alloy wires twisted together.

6. The method for preparing a highly flexible, anti-torsion drag chain cable according to claim 1, characterized in that, The insulation layer is one or more of styrene butadiene rubber, ethylene propylene rubber, and chloroprene rubber.

7. The method for preparing a highly flexible, torsion-resistant drag chain cable according to claim 1, characterized in that, The filler is one or more of carbon black, montmorillonite, and calcium carbonate.

8. The method for preparing a highly flexible, anti-torsion drag chain cable according to claim 1, characterized in that, The lubricant is one or more of barium stearate, silicone oil, and polyethylene wax.

9. The method for preparing a highly flexible, anti-torsion drag chain cable according to claim 1, characterized in that, The antioxidant is antioxidant 1035.

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