Abrasion-resistant tensile power cable and method of making same

Abstract

The application relates to the technical field of cable production, in particular to a wear-resistant and tensile power cable and a preparation method thereof. The wear-resistant and tensile power cable comprises a plurality of cable core wires, an elastic inner sheath, an insulating tensile composite layer arranged outside the elastic inner sheath from inside to outside, a TPEE sheath layer, a PUR primer layer and an organic silicon wear-resistant composite layer; the cable core wires are located in the elastic inner sheath; a reinforcing wire is arranged in the elastic inner sheath; the reinforcing wire is any one of a glass fiber composite wire, an aramid fiber composite wire and an UHMWPE fiber composite wire; and the organic silicon wear-resistant composite layer is connected to the PUR primer layer through a chemical bond. The wear-resistant and tensile power cable has good wear resistance, weather resistance, excellent tensile mechanical properties and insulation safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable production, in particular to a wear-resistant and tensile-resistant power cable and a preparation method thereof. BACKGROUND

[0002] Power cables are mainly used for strong electric energy transmission in power generation, distribution, transmission, transformation and power supply lines. The characteristics of strong electric energy transmission are large current and high voltage, which requires power cables to have good wear-resistant self-protection performance, tensile mechanical properties and insulation safety performance.

[0003] At present, the existing cable includes a cable core and a sheath composite layer arranged outside the cable core, the sheath composite layer is arranged from inside to outside of the shielding layer and the protective layer of the cable core, the shielding layer is usually a metal strip layer, and the protective layer is usually a rubber layer, and ethylene-propylene rubber EPR is commonly used in cable protective layers.

[0004] However, the cable prepared by using ethylene-propylene rubber as the cable protective layer has insufficient tensile and wear-resistant performance. Therefore, the present application provides a wear-resistant and tensile-resistant power cable and a preparation method thereof. SUMMARY

[0005] In order to solve the problem of insufficient tensile and wear-resistant performance of the existing cable, the present application provides a wear-resistant and tensile-resistant power cable and a preparation method thereof.

[0006] The wear-resistant and tensile-resistant power cable provided by the present application is realized by the following technical scheme:

[0007] The wear-resistant and tensile-resistant power cable comprises a plurality of cable core wires, an elastic inner sheath, an insulation and tensile composite layer arranged from inside to outside of the elastic inner sheath, a TPEE sheath layer, a PUR primer layer and an organic silicon wear-resistant composite layer, the cable core wires are located in the elastic inner sheath, the elastic inner sheath is provided with a reinforcing wire, the polymer main chain of the PUR primer layer contains active double bonds, the organic silicon wear-resistant composite layer is prepared from a wear-resistant organic silicon resin, the wear-resistant organic silicon resin is composed of component A and component B, the component A comprises vinyl silicone oil and vinyl silane modified nano molybdenum disulfide, the component B comprises hydrogen-containing silicone oil and platinum catalyst, the addition amount of the vinyl silane modified nano molybdenum disulfide in the organic silicon wear-resistant composite layer is 5-10wt%, and the organic silicon wear-resistant composite layer is connected to the PUR primer layer by a chemical bond.

[0008] The reinforced wire material and the insulating tensile composite layer are used in the application to improve the overall tensile mechanical strength of the power cable, the organic silicon wear-resistant composite layer is firmly combined with the TPEE sheath layer by the PUR primer layer, the polyester soft chain segment in the PUR primer layer has good compatibility with the soft chain segment of the TPEE resin in the TPEE sheath layer, so that the PUR primer layer can be firmly combined with the TPEE sheath layer, the polymer main chain of the PUR primer layer contains active double bonds, under the action of heating and / or initiator, the active double bonds in the polymer main chain of the PUR primer layer and the vinyl contained in the wear-resistant silicone resin are subjected to double bond polymerization reaction, the organic silicon wear-resistant composite layer is connected to the PUR primer layer by chemical bonds, and the power cable is good in wear resistance, stain resistance and weather resistance.

[0009] Preferably, the elastic inner sheath comprises an elastic support frame and an elastic inner ring, the reinforced wire material is coaxially arranged in the elastic support frame, a plurality of embedding grooves A are integrally formed on the outer wall of the elastic support frame, a plurality of embedding grooves B are integrally formed on the inner wall of the elastic inner ring, the embedding grooves A of the elastic support frame and the embedding grooves B of the elastic inner ring form cable core filling grooves, and the cable core is filled in the cable core filling grooves of the elastic inner sheath.

[0010] The elastic inner sheath in the application can improve the bending resistance of the power cable and effectively protect the cable core, the bending radius is 6 times the outer diameter of the wire, the bending frequency is 88m / min, the reciprocating motion is 5 million times, the cable core does not have open circuit and short circuit defects, and the outer surface of the power cable has no cracks.

[0011] Preferably, the PUR primer layer is prepared from a PUR surface layer polyurethane resin, the PUR surface layer polyurethane is prepared from components A, B and C, the component A is a -NCO terminated polyurethane prepolymer prepared from diisocyanate, polyester polyol, side chain branched vinyl modified double hydroxyl terminated silicone oil, organic tin catalyst and strong polar aprotic solvent, the molar amount of -NCO in the diisocyanate is 1.4-1.6 times the sum of the molar amount of hydroxyl in the polyester polyol and the side chain branched vinyl modified double hydroxyl terminated silicone oil, the component B is composed of a chain extender, a free radical initiator, an organic tin catalyst and a strong polar aprotic solvent, the ratio of the molar amount of active hydrogen in the chain extender to the molar amount of -NCO in the component A is (0.8-1):1, and the component C is an amino silane modified filler.

[0012] Further preferably, the molar ratio of the polyester polyol to the side chain branched vinyl modified double hydroxyl terminated silicone oil is 1:(0.8-1.2).

[0013] The inventors control the amount of polyester polyol to regulate the peeling strength of the PUR primer layer and the TPEE sheath layer and the peeling strength of the PUR primer layer and the silicone wear-resistant composite layer, thereby ensuring the wear resistance and weather resistance of the power cable.

[0014] Preferably, the chain extender is composed of maleic diamine and small molecule diol; the small molecule diol is at least one of 1,4-butanediol, 1,6-hexanediol, 1,3-propanediol, and 1,5-pentanediol; and the molar ratio of the maleic diamine to the small molecule diol is 1:(1-3).

[0015] The inventors control the amount of maleic diamine to regulate the peeling strength of the PUR primer layer and the TPEE sheath layer and the peeling strength of the PUR primer layer and the silicone wear-resistant composite layer, thereby ensuring the wear resistance and weather resistance of the power cable. Moreover, the use of maleic diamine in the chain extender has the advantage that the primary amine group in the maleic diamine can react with the -NCO terminated polyurethane prepolymer in the A component at room temperature to complete the chain extension reaction and form a condensed PUR primer film. Subsequently, the primary hydroxyl group in the small molecule diol can fully react with the residual -NCO group at 60-75 DEG C for 30-60 min, so as to finally form the PUR primer layer, which is beneficial to improving the processing performance of the power cable. The problem of long curing reaction time and low coating efficiency of the traditional PUR primer is solved.

[0016] Preferably, the free radical initiator is at least one of dicumyl peroxide, dicyclohexyl peroxydicarbonate, benzoyl peroxide, and tert-butyl peroxide.

[0017] In the present application, a high-temperature free radical initiator is used to avoid the consumption of active double bonds of the PUR surface layer polyurethane resin at 60-75 DEG C in the curing stage. The formed PUR primer layer has good flexibility. Subsequently, the above free radical initiator generates free radicals at 120-140 DEG C after the coating of the silicone wear-resistant resin, so that the vinyl group in the wear-resistant silicone resin and the active double bond in the polymer main chain of the PUR primer layer perform double bond polymerization reaction. The silicone wear-resistant composite layer is chemically connected to the PUR primer layer, thereby endowing the power cable with good wear resistance, stain resistance, and weather resistance. That is, the use of the above free radical initiator can improve the processing performance of the wear-resistant and tensile power cable in the present application.

[0018] Preferably, the amino silane modified filler is made of amino silane and superfine inorganic filler; the amino silane is one or more combinations of γ-aminopropyl triethoxysilane, γ-aminopropyl trimethoxysilane and N-β-(aminoethyl)-γ-aminopropyl trimethoxysilane; the superfine inorganic filler is at least one of calcium carbonate, alumina, titanium white powder, barium sulfate, mica powder, kaolin and attapulgite with a particle size less than 10 microns.

[0019] The amino silane modified filler in the application has good compatibility with the polyurethane surface layer resin formed by the A component and the B component, so that the amino silane modified filler can be uniformly distributed in the polyurethane surface layer resin, and the amino group in the amino silane modified filler can react with the residual -NCO group, so that the amino silane modified filler is fixedly connected to the polymer main chain of the PUR base coating in the form of NH-CO polyurethane bond (chemical bond), which can improve the weather resistance, wear resistance and mechanical strength of the PUR base coating.

[0020] Preferably, the insulating tensile composite layer is composed of an insulating tensile S layer and an insulating tensile Z layer, the insulating tensile S layer is made of impregnated resin and continuous fibers through a winding forming process, the continuous fibers in the insulating tensile S layer are wound clockwise; the insulating tensile Z layer is made of impregnated resin and continuous fibers through a winding forming process, the continuous fibers in the insulating tensile Z layer are wound counterclockwise; the continuous fibers in the insulating tensile composite layer are selected from high-strength S glass fibers or low-dielectric D glass fibers.

[0021] The insulating tensile composite layer in the application can effectively improve the overall tensile mechanical properties.

[0022] Preferably, the reinforcing wire is any one of a glass fiber composite wire, an aramid composite wire or a UHMWPE fiber composite wire.

[0023] In the application, the lightweight and high-strength glass fiber composite wire or aramid composite wire or UHMWPE fiber composite wire is used to replace the traditional metal wire or alloy wire, which ensures the tensile strength of the power cable and reduces the overall weight of the power cable, which is conducive to the lightweight development of the power cable.

[0024] The application provides a preparation method of the wear-resistant and tensile power cable.

[0025] The preparation method of the wear-resistant and tensile power cable comprises the following steps:

[0026] Step 1: an elastic support frame with a coaxial filling reinforcing wire is prepared through an extrusion forming process;

[0027] PUR surface layer polyurethane resin and silicone wear-resistant resin are simultaneously configured;

[0028] Step two, insert the cable core into the embedding groove A of the elastic support frame, compound TPEE resin melt on the outer wall of the elastic support frame through extrusion molding process, and naturally cool to room temperature to compound the elastic inner ring on the outer wall of the elastic support frame, finally obtain the elastic inner sheath;

[0029] Step three, the elastic inner sheath is formed by the continuous fiber impregnated with impregnated resin through clockwise winding and curing by winding molding process to form the insulating tensile S layer, and then the continuous fiber impregnated with impregnated resin is counterclockwise wound and cured by winding molding process to form the insulating tensile Z layer, that is, the elastic inner sheath is formed into the semi-product cable of the insulating tensile composite layer;

[0030] Step four, compound TPEE resin melt on the outer wall of the semi-product cable through extrusion molding process, and naturally cool to room temperature to compound the TPEE sheath layer on the semi-product cable;

[0031] Step five, coat the PUR surface layer polyurethane resin on the surface of the TPEE sheath layer, and place it at 60-75 DEG C for 30-60 min, then coat the silicone wear-resistant resin, and place it at 120-140 DEG C for 15-60 min to obtain the finished wear-resistant tensile power cable.

[0032] In summary, the present application has the following advantages:

[0033] 1. The wear-resistant tensile power cable has good wear resistance, weather resistance, excellent tensile mechanical properties and insulation safety performance.

[0034] 2. The preparation method of the wear-resistant tensile power cable can meet the continuous production demand, and the extrusion molding process involved is relatively simple and mature, and the professional requirement for the operator is low, so that the batch production of the wear-resistant tensile power cable can be realized, and the market competitiveness of the wear-resistant tensile power cable is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is the overall structure schematic diagram of the wear-resistant tensile power cable in the present application.

[0036] Figure 2 It is the structure schematic diagram of the special-shaped extrusion die of the elastic support frame of the coaxial filling reinforced wire.

[0037] In the figure, 1 is a cable core; 10 is a cable core filling groove; 11 is a copper stranded wire; 12 is a PVC sheath; 2 is an elastic inner sheath; 20 is a reinforced wire; 21 is an elastic support frame; 211 is an embedding groove A; 22 is an elastic inner ring; 221 is an embedding groove B; 3 is an insulating tensile composite layer; 4 is a TPEE sheath layer; 5 is a PUR primer layer; and 6 is a silicone wear-resistant composite layer. DETAILED DESCRIPTION

[0038] To further understand the inventive and technical progress of the present application, the preferred embodiments of the present application are discussed in detail below in conjunction with examples and comparative examples.

[0039] Example: Reference Figure 1 A wear-resistant and tensile power cable comprises a plurality of cable cores 1, an elastic inner sheath 2, an insulating tensile composite layer 3 arranged outside the elastic inner sheath 2 from inside to outside, a TPEE sheath layer 4, a PUR primer layer 5, and a silicone wear-resistant composite layer 6. The cable cores 1 are all filled in the elastic inner sheath 2.

[0040] The elastic inner sheath 2 is provided with a reinforcing wire 20. The reinforcing wire 20 is any one of a glass fiber composite wire, an aramid composite wire, and a UHMWPE fiber composite wire produced by a pultrusion process. The diameter of the reinforcing wire 20 depends on the outer diameter of the wear-resistant and tensile power cable, and the diameter of the reinforcing wire 20 ranges from 1 to 3 mm. The light and high-strength glass fiber composite wire or aramid composite wire or UHMWPE fiber composite wire is used to replace the traditional metal wire or alloy wire, which ensures the tensile strength of the power cable while reducing the overall weight of the power cable, and is conducive to the lightweight development of the power cable.

[0041] Reference Figure 1 The elastic inner sheath 2 comprises an elastic support frame 21 and an elastic inner ring 22, and the reinforcing wire 20 is coaxially arranged in the elastic support frame 21. The elastic support frame 21 filled with the coaxial reinforcing wire 20 is made by using a special-shaped extrusion die (see Figure 2 ) combined with an extrusion molding process. The elastic support frame 1 is integrally extruded with a plurality of embedding grooves A211 on the outer wall, and the number of the embedding grooves A211 is equal to the number of the cable cores 1. For example, the number of the embedding grooves A211 is three for a conventional three-phase cable. The elastic inner sheath 2 is integrally extruded with a plurality of embedding grooves B221 on the inner wall, and the number of the embedding grooves B221 is equal to the number of the cable cores 1. For example, the number of the embedding grooves B221 is three for a conventional three-phase cable. The arc angle of the embedding grooves B221 of the elastic inner sheath 2 is 120°, the arc angle of the embedding grooves A211 of the elastic support frame 1 is 240°, the ratio of the opening length of the embedding grooves A211 of the elastic support frame 21 to the diameter of the cable core is 3 0.5 :2, and the embedding grooves A211 of the elastic support frame 21 and the embedding grooves B221 of the elastic inner sheath 2 form cable core filling grooves 10. For example, the elastic inner sheath 2 contains three cable core filling grooves 10 evenly distributed around the central axis of the elastic support frame 21 for a conventional three-phase cable. The cable cores 1 are filled in the cable core filling grooves 10.

[0042] The elastic support frame 21 and the elastic inner ring 22 are both made of a TPEE resin formula for cables.

[0043] The TPEE resin for cable is made of 85 parts by mass of American DuPont-HTR 8667 TPEE resin, 1 part by mass of antioxidant 1010, 1 part by mass of ultraviolet absorber UV-1577, 2 parts by mass of zinc stearate, 1 part by weight of titanate coupling agent-isopropyl tri(dioctyl pyrophosphoric acyloxy) titanate HY-201, 2 parts by mass of Hui Funa Nanometer Material's fumed titanium dioxide NF-50, and 8 parts by mass of Man Li Nanometer Technology's nano calcium carbonate ML-CaCO3-N100.

[0044] The insulating tensile composite layer 3 is composed of an insulating tensile S layer and an insulating tensile Z layer. The insulating tensile S layer is made of impregnated resin and continuous fibers through a winding forming process. The continuous fibers in the insulating tensile S layer are wound clockwise. Specifically, the continuous fibers impregnated with impregnated resin are wound clockwise on the elastic inner sheath 2 through a winding forming process and naturally cooled to room temperature to solidify to form the insulating tensile S layer. The insulating tensile Z layer is made of impregnated resin and continuous fibers through a winding forming process. The continuous fibers in the insulating tensile Z layer are wound counterclockwise. Specifically, the continuous fibers impregnated with impregnated resin are wound clockwise on the insulating tensile S layer on the elastic inner sheath 2 through a winding forming process and naturally cooled to room temperature to solidify to form the insulating tensile Z layer. The continuous fibers in the insulating tensile composite layer 3 are selected from high-strength S glass fibers or low-dielectric D glass fibers. The impregnated resin formula in the insulating tensile composite layer 3 is the same as that of the elastic support frame 21 and the elastic inner ring 22, which is the same as the TPEE resin formula for cable.

[0045] The TPEE sheath layer 4 is the main protective material of the wear-resistant and tensile power cable, and has a flame retardant requirement. The TPEE sheath layer 4 is made of 70 parts by mass of American DuPont-HTR 8667 TPEE resin, 1 part by mass of antioxidant 1010, 1 part by mass of ultraviolet absorber UV-1577, 2 parts by mass of zinc stearate, 2 parts by weight of titanate coupling agent HY-201, 2 parts by mass of fumed titanium dioxide NF-50, 8 parts by mass of nano calcium carbonate ML-CaCO3-N100, 5 parts by mass of ultra-fine aluminum hydroxide, 5 parts by mass of ultra-fine magnesium hydroxide, and 4 parts by mass of nano molybdenum disulfide.

[0046] The flame-retardant filler is ultra-fine aluminum hydroxide of H-WF-10 brand of Shandong Branch of China Aluminum Co., Ltd., hexagonal flaky magnesium hydroxide XD-MH150 of Wuhu Xinda New Material Technology Co., Ltd., with particle size D 50 =1.5-2µm, and 3000-mesh flaky molybdenum disulfide of MP-2 brand of Qinghe County Chaotai Metal Material Co., Ltd.

[0047] The PUR primer layer 5 is made of a PUR top layer polyurethane resin, which is made of a component A, a component B and a component C. The component C is an amino silane modified filler, and the content of the component C in the PUR top layer polyurethane resin is 5-20%. The amino silane modified filler is made of an amino silane and a superfine inorganic filler.

[0048] The amino silane is one or more combinations of γ-aminopropyl triethoxysilane, γ-aminopropyl trimethoxysilane and N-β-(aminoethyl)-γ-aminopropyl trimethoxysilane.

[0049] The superfine inorganic filler is at least one of calcium carbonate, alumina, titanium white powder, barium sulfate, mica powder, kaolin and attapulgite with a particle size less than 10 microns.

[0050] The component A is a -NCO terminated polyurethane prepolymer, which is made of a diisocyanate, a polyester polyol, a side chain branched vinyl modified double hydroxyl terminated silicone oil, an organic tin catalyst and a strong polar aprotic solvent.

[0051] The diisocyanate is liquid MDI, specifically Wannate MDI-100HL of Wanhua.

[0052] The polyester polyol is poly-caprolactone diol, specifically PD1-10 PCL1000 of BASF.

[0053] The side chain branched vinyl modified double hydroxyl terminated silicone oil is a vinyl hydroxyl silicone oil purchased from Hubei Shenne Chemical Technology Co., Ltd., which is a colorless transparent liquid, with a hydroxyl content of 6±0.5%, a vinyl content of 6±0.5%, a viscosity (25℃) of ≤33 mm2 / s and a water content of ≤0.35%.

[0054] The organic tin catalyst is dibutyltin dilaurate T12.

[0055] The strong polar aprotic solvent is at least one of acetone, dimethyl sulfoxide and dimethyl formamide.

[0056] The molar ratio of the poly-caprolactone diol PD1-10 to the vinyl hydroxyl silicone oil is 1:(0.8-1.2). Preferably, the molar ratio of the poly-caprolactone diol PD1-10 to the vinyl hydroxyl silicone oil is 1:0.8.

[0057] The molar amount of -NCO in the diisocyanate is 1.4-1.6 times the total molar amount of hydroxyl groups in the polyester polyol and the side chain branched vinyl modified double hydroxyl terminated silicone oil. Preferably, the molar amount of -NCO in the diisocyanate is 1.5 times the total molar amount of hydroxyl groups in the polyester polyol and the side chain branched vinyl modified double hydroxyl terminated silicone oil.

[0058] The B component is composed of a chain extender, a free radical initiator, an organic tin catalyst, and a strong polar aprotic solvent. The organic tin catalyst is dibutyltin dilaurate T12. The strong polar aprotic solvent is at least one of acetone, dimethyl sulfoxide, and dimethylformamide.

[0059] The ratio of the molar amount of active hydrogen in the chain extender to the molar amount of -NCO in the A component is (0.8-1):1. Preferably, the ratio of the molar amount of active hydrogen in the chain extender to the molar amount of -NCO in the A component is (0.9-0.95):1.

[0060] The chain extender is composed of a maleic acid diamine and a small molecule diol.

[0061] The small molecule diol is at least one of 1,4-butanediol, 1,6-hexanediol, 1,3-propanediol, and 1,5-pentanediol. The molar ratio of the maleic acid diamine to the small molecule diol is 1:(1-3), and preferably, the molar ratio of the maleic acid diamine to the small molecule diol is 1:1.

[0062] The free radical initiator is at least one of dicumyl peroxide, dicyclohexyl peroxide dicarbonate, benzoyl peroxide, and tert-butyl peroxide.

[0063] The polymer main chain of the PUR primer layer 5 contains active double bonds. The silicone wear-resistant composite layer 6 is made of a wear-resistant silicone resin. The silicone wear-resistant resin is composed of an A component and a B component.

[0064] The A component is composed of a vinyl silicone oil and a vinyl silane modified nano-molybdenum disulfide. The vinyl silane modified nano-molybdenum disulfide is made of a vinyl silane and a nano-molybdenum disulfide (3000 mesh molybdenum disulfide of Qinghe County Chaotai Metal Material Co., Ltd.). The vinyl silane is KH151. The content of the vinyl silane modified nano-molybdenum disulfide in the wear-resistant silicone resin is 5-10 wt%.

[0065] The B component includes a hydrogen-containing silicone oil and a platinum gold catalyst. The silicone wear-resistant composite layer 6 is chemically bonded to the PUR primer layer 5, giving the power cable good wear resistance, stain resistance, and weather resistance.

[0066] Referring to Figure 1 A method for preparing a wear-resistant and tensile power cable, comprising the following steps:

[0067] Step one, by extrusion molding process to prepare the elastic support frame 21 and the elastic inner ring 22 of the coaxial filling reinforced wire 20; at the same time, configure the PUR surface layer polyurethane resin and the silicone wear-resistant resin;

[0068] Step two, the cable core 1 is embedded in the embedding groove A211 of the elastic support frame 21, and the TPEE resin melt is compounded on the outer wall of the elastic support frame 21 through an extrusion molding process, and is naturally cooled to room temperature, so that the elastic inner ring 22 is compounded on the outer wall of the elastic support frame 21, and finally the elastic inner sheath 2 is prepared;

[0069] Step three, the elastic inner sheath 2 is formed by the continuous fiber impregnated with impregnated resin through the winding molding process to form the insulating tensile S layer, and then the continuous fiber impregnated with impregnated resin is wound in the opposite direction through the winding molding process to form the insulating tensile Z layer, that is, the elastic inner sheath 2 forms the insulating tensile composite layer 3 to obtain the semi-product cable;

[0070] Step four, the TPEE resin melt is compounded on the outer wall of the semi-product cable through an extrusion molding process, and is naturally cooled to room temperature, so that the TPEE sheath layer 4 is compounded on the semi-product cable;

[0071] Step five, the PUR surface layer polyurethane resin is coated on the surface of the TPEE sheath layer 4, and is cured at 60-75°C for 30-60min, and then the silicone wear-resistant resin is coated, and is cured at 120-140°C for 15-60min to obtain the finished wear-resistant tensile power cable.

[0072] Example 1: In a wear-resistant tensile power cable, the DuPont-HTR 8667 TPEE resin is selected as the pre-impregnated resin, and the Dalima 100D ultra-high molecular weight polyethylene fiber is used as the continuous fiber to prepare the UHMWPE fiber composite line with a diameter of 1.20mm through the pultrusion molding process.

[0073] A method for preparing a wear-resistant tensile power cable, comprising the following steps:

[0074] Step one, preparation of the filling reinforcing wire 20: the HTR 8667 TPEE resin is heated and melted to 220°C to obtain a pre-impregnated melt, the melt is injected into a glue injection box, and the 100D ultra-high molecular weight polyethylene fiber is input into a molding mold after passing through the glue injection box to complete the impregnation treatment of the 100D ultra-high molecular weight polyethylene fiber. The impregnated 100D ultra-high molecular weight polyethylene fiber is subjected to pultrusion molding, and the pultrusion molding parameters are as follows: zone one temperature 170°C, zone one residence time 20s; zone two temperature 120°C, zone two residence time 60s; zone three temperature 80°C, zone three residence time 180s; pultrusion speed 60cm / min, and the naturally cooled to room temperature to obtain the UHMWPE fiber composite line with a diameter of 1.20mm;

[0075] PUR surface layer polyurethane resin and silicone wear-resistant resin are configured at the same time;

[0076] The preparation method of the PUR surface layer polyurethane resin is as follows:

[0077] Preparation of component A: 100 parts by weight of polycaprolactone diol PD1-10 PCL1000 and 60 parts by weight of vinyl hydroxyl silicone oil were placed in a reaction kettle, vacuum dehydrated at 120°C for 2 hours, then 86.9 parts by weight of Wannate MDI-100HL, 0.04 parts by weight of dibutyltin dilaurate T12, 200 parts by weight of dimethylformamide DMF were added, the temperature was adjusted to 80°C, and the reaction was carried out for 2 hours. When the -NCO content in the system tended to be stable, component A was obtained.

[0078] Preparation of component B: 4.56 parts by weight of maleic acid diamine, 5.92 parts by weight of 1,6-hexanediol, 0.02 parts by weight of dibutyltin dilaurate T12, 2 parts of free radical initiator - dicyclohexyl peroxydicarbonate (DCPD), 10 parts by weight of dimethylformamide DMF were mixed uniformly;

[0079] Preparation of component C: 20 parts by weight of fumed titanium dioxide NF-50, 55 parts by weight of nano calcium carbonate ML-CaCO3-N100, 25 parts by weight of nano alumina CW-Al2O3-003 (average particle size 200 nm, Shanghai Superwei Nanometer) and 5 parts by weight of γ-aminopropyl triethoxysilane KH550 were kneaded for 30 min to obtain amino silane modified filler;

[0080] When used, 446.94 parts by weight of component A, 20.5 parts by weight of component B, and 20.6 parts by weight of component C were mixed uniformly at 0°C to obtain PUR topcoat polyurethane resin. Since the open time of the PUR topcoat polyurethane resin is short, it is used in a ready-to-use manner;

[0081] The preparation method of the silicone wear-resistant resin is as follows:

[0082] Preparation of component A: 97 parts by weight of nano molybdenum disulfide MP-2 and 3 parts by weight of vinyl silane KH151 were kneaded for 30 min to obtain vinyl silane modified nano molybdenum disulfide. Then 6 parts by weight of vinyl silane modified nano molybdenum disulfide, 24 parts by weight of vinyl silicone oil (Andisil Vs1000 of Andisil Special Silicone (Nantong) Co., Ltd., vinyl content 0.11 mmoles / g), and 65.9 parts by weight of vinyl silicone oil (Andisil Vs400 of Andisil Special Silicone (Nantong) Co., Ltd., vinyl content 0.19 mmoles / g) were mixed uniformly to obtain component A;

[0083] Preparation of B component: 9 parts by weight of chain extender hydrogen-containing silicone oil (Andsil CE-13 of Anblya Special Silicone (Nantong) Co., Ltd., Si-H content 1.37 mmoles / g), 2 parts of free radical initiator-dicyclohexyl peroxydicarbonate (DCPD), 1 part by weight of crosslinking agent-hydrogen-containing silicone oil (Andisi1 XL-1340 of Anblya Special Silicone (Nantong) Co., Ltd., containing H-terminated and pendant H functional groups, Si-H content 3.0 mmoles / g) and 0.1 g of platinum catalyst were mixed uniformly to obtain the B component;

[0084] In use, the A component and the B component are mixed uniformly to obtain the silicone wear-resistant resin;

[0085] Step two, preparation of the elastic support frame 21 of the coaxially filled reinforcing wire 20: 85 parts by mass of American DuPont-HTR 8667 TPEE resin, 1 part by mass of antioxidant 1010, 1 part by mass of ultraviolet absorber UV-1577, 2 parts by mass of zinc stearate, 1 part by weight of titanate coupling agent HY-201, 2 parts by mass of fumed titanium dioxide NF-50, and 8 parts by mass of nano calcium carbonate ML-CaCO3-N100 were placed in a high-speed dispersion kettle and dispersed at 500 rpm for 1 hour to obtain a mixture. The mixture was put into a double screw extruder, which had a total of 7 heating temperature zones. The set temperatures of the 1-7 heating temperature zones were: 170°C→190°C→200°C→210°C→220°C→220°C→220°C. The TPEE molten liquid extruded from the die was injected into a special-shaped mold. The UHMWPE fiber composite wire was arranged in the center of the special-shaped mold. The TPEE molten liquid was coated on the outer wall of the UHMWPE fiber composite wire. The temperatures of the three temperature zones in the special-shaped mold were 190°C→120°C→80°C. The residence times of the three temperature zones were 10 s→60 s→120 s, respectively. Natural cooling to room temperature obtained the elastic support frame 21 of the coaxially filled reinforcing wire 20. The diameter of the embedded groove A211 was 5.0 mm, and the diameter of the elastic support frame 21 was 6.0 mm.

[0086] Step three, the single cable core wire is a copper strand 11 with a specification of 16 mm 2 and a coating of a copper strand 11 with a specification of 16 mm 2PVC sheath 12 of the outer wall of the copper strand 11, the diameter of the single cable core is 5 mm, the cable core 1 is embedded in the embedding groove A211 of the elastic support frame 21 to assemble a semi-finished product line, and then 85 parts by mass of DuPont-HTR 8667 TPEE resin, 1 part by mass of antioxidant 1010, 1 part by mass of ultraviolet absorber UV-1577, 2 parts by mass of zinc stearate, 1 part by weight of titanate coupling agent HY-201, 2 parts by mass of fumed titanium dioxide NF-50, and 8 parts by mass of nano calcium carbonate ML-CaCO3-N100 are placed in a high-speed dispersion kettle to disperse at 500 rpm for 1 hour to obtain a mixture. The mixture is poured into a twin-screw extruder, and the twin-screw extruder has a total of 7 heating temperature zones. The set temperatures of the 1-7 heating temperature zones are: 170°C→190°C→→200°C→210°C→220°C→220°C→220°C. The TPEE molten liquid extruded from the die is injected into a special-shaped mold, the special-shaped mold is provided with the assembled semi-finished product line at the center, the TPEE resin molten material is compounded on the outer wall of the assembled semi-finished product line through an extrusion molding process, and the elastic inner ring sleeve 22 is compounded on the outer wall of the assembled semi-finished product line after natural cooling to room temperature. Finally, the elastic inner sheath 2 of the coaxial filling reinforcing wire 20 with a diameter of 7.8 mm is obtained.

[0087] Step three, the elastic inner sheath 2 is formed into the semi-product cable by the winding forming process to form the insulating and tensile composite layer 3: the HTR 8667 TPEE resin is heated and melted to 220°C to obtain a pre-impregnated molten liquid, the impregnated molten liquid is injected into the glue injection box of the winding machine, the high-strength HS2 glass fiber of Nanjing Glass Fiber Institute passes through the glue injection box and is input into the forming mold to complete the impregnation treatment of the high-strength HS2 glass fiber, the impregnated high-strength HS2 glass fiber is subjected to the impregnation treatment and the winding forming process, the high-strength HS2 glass fiber impregnated with the pre-impregnated molten liquid is wound clockwise on the outer wall of the elastic inner sheath 2 of the coaxial filling reinforcing wire 20, and the insulating and tensile S layer is formed on the outer wall of the elastic inner sheath 2 after natural cooling to room temperature. Then, the elastic inner sheath 2 compounded with the insulating and tensile S layer is input into the next winding machine, the HTR 8667 TPEE resin is heated and melted to 220°C to obtain a pre-impregnated molten liquid, the impregnated molten liquid is injected into the glue injection box of the winding machine, the high-strength HS2 glass fiber of Nanjing Glass Fiber Institute passes through the glue injection box and is input into the forming mold to complete the impregnation treatment of the high-strength HS2 glass fiber, the impregnated high-strength HS2 glass fiber is subjected to the impregnation treatment and the winding forming process, the high-strength HS2 glass fiber impregnated with the pre-impregnated molten liquid is wound counterclockwise on the outer wall of the insulating and tensile S layer, and the insulating and tensile Z layer is formed on the outer wall of the insulating and tensile S layer after natural cooling to room temperature, that is, the elastic inner sheath 2 forms the insulating and tensile composite layer 3 to obtain the semi-product cable;

[0088] Step four, 70 parts by mass of DuPont-HTR 8667 TPEE resin, 1 part by mass of antioxidant 1010, 1 part by mass of ultraviolet absorber UV-1577, 2 parts by mass of zinc stearate, 2 parts by mass of titanate coupling agent HY-201, 2 parts by mass of fumed titanium dioxide NF-50, 8 parts by mass of nano calcium carbonate ML-CaCO3-N100, 5 parts by mass of ultra-fine aluminum hydroxide, 5 parts by mass of ultra-fine magnesium hydroxide, 4 parts by mass of nano molybdenum disulfide, are placed in a high-speed dispersion kettle and dispersed at 500 rpm for 1 hour to obtain a mixture. The mixture is fed into a twin-screw extruder, which has a total of 7 heating temperature zones. The set temperatures of heating temperature zones 1-7 are: 175℃→200℃→→210℃→220℃→225℃→225℃→225℃. The TPEE melt extruded from the die is injected into a special-shaped mold. Through the extrusion molding process, the TPEE resin melt material is compounded on the outer wall of the semi-product cable. After natural cooling to room temperature, the TPEE jacket layer 4 is compounded on the semi-product cable. The wall thickness of the TPEE jacket layer 4 is 2.4 mm, and the diameter of the semi-product cable is 10.2 mm.

[0089] Step five, the PUR surface layer polyurethane resin in step one is coated on the surface of the TPEE jacket layer 4, and is placed at 70℃ for 60 min. The PUR primer layer 5 with a thickness of 600 microns is formed on the outer wall of the TPEE jacket layer 4. Then, the organic silicon wear-resistant resin in step one is coated on the surface of the PUR primer layer 5, and is placed at 105℃ for 30 min. The organic silicon wear-resistant composite layer 6 with a thickness of 200 microns is formed on the outer wall of the PUR primer layer 5. After winding, the finished product wear-resistant and tensile power cable with a diameter of 11.0 mm is obtained.

[0090] The difference between example 2 and example 1 is that in the preparation method of the A component of the organic silicon wear-resistant resin, 8 parts by weight of vinyl silane modified nano molybdenum disulfide is mixed with 24 parts by weight of vinyl silicone oil Andisil Vs 1000 and 65.9 parts by weight of vinyl silicone oil Andisil Vs 400 to obtain the A component.

[0091] The difference between example 3 and example 1 is that in the preparation method of the A component of the organic silicon wear-resistant resin, 10 parts by weight of vinyl silane modified nano molybdenum disulfide is mixed with 24 parts by weight of vinyl silicone oil Andisil Vs 1000 and 65.9 parts by weight of vinyl silicone oil Andisil Vs 400 to obtain the A component.

[0092] Example 4 differs from Example 1 in that the preparation method of the A component of the silicone wear-resistant resin, 6 parts by weight of vinyl silane modified nanometer molybdenum disulfide and 24 parts by weight of vinyl silicone oil (Andisil SF 1421 of Anbisia Special Silicone (Nantong) Co., Ltd., vinyl content 0.13 mmoles / g, phenyl content 3.0 mole%) are mixed uniformly, and 65.9 parts by weight of vinyl silicone oil Andisil Vs 400 is obtained.

[0093] Example 5 differs from Example 1 in that the preparation method of the B component of the silicone wear-resistant resin, 9 parts by weight of chain extender hydrogen-containing silicone oil Andsil CE-13, 2 parts of free radical initiator-dicyclohexyl peroxydicarbonate (DCPD), 1 part by weight of crosslinking agent-hydrogen-containing silicone oil Andisi1 XL-2450 and 0.1 g of platinum gold catalyst are mixed uniformly to obtain the B component.

[0094] Example 6 differs from Example 4 in that the preparation method of the B component of the silicone wear-resistant resin, 9 parts by weight of chain extender hydrogen-containing silicone oil Andsil CE-13, 2 parts of free radical initiator-dicyclohexyl peroxydicarbonate (DCPD), 1 part by weight of crosslinking agent-hydrogen-containing silicone oil Andisi1 XL-2450 and 0.1 g of platinum gold catalyst are mixed uniformly to obtain the B component.

[0095] Example 7 differs from Example 1 in that the preparation method of the A component of the PUR surface layer polyurethane resin, 110 parts by weight of polycaprolactone diol PD1-10 PCL1000 and 54 parts by weight of vinyl hydroxyl silicone oil are placed in a reaction kettle, vacuum dehydrated at 120°C for 2 hours, then 86.9 parts by weight of Wannate MDI-100HL, 0.04 parts by weight of dibutyl tin dilaurate T12, 200 parts by weight of dimethylformamide DMF are added, the temperature is adjusted to 80°C, and the reaction is carried out for 2 hours. When the -NCO content in the system tends to be stable, the A component is obtained. The preparation methods of the B component and the C component are the same, and when used, 450.94 parts by weight of the A component, 20.5 parts by weight of the B component and 20.6 parts by weight of the C component are mixed uniformly at 0°C to obtain the PUR surface layer polyurethane resin.

[0096] Example 8 differs from Example 1 in that in the preparation method of the A component of the PUR surface layer polyurethane resin, 92 parts by weight of polycaprolactone diol PD1-10 PCL1000 and 64.8 parts by weight of vinyl hydroxyl silicone oil are placed in a reaction kettle, vacuum dehydration at 120°C for 2 hours, then 86.9 parts by weight of Wannate MDI-100HL, 0.04 parts by weight of dibutyltin dilaurate T12, 200 parts by weight of dimethylformamide DMF are added, the temperature is adjusted to 80°C, and the reaction is carried out for 2 hours. When the -NCO content in the system tends to be stable, the A component is obtained. The preparation methods of the B component and the C component are the same. When used, 443.74 parts by weight of the A component, 20.5 parts by weight of the B component, and 20.6 parts by weight of the C component are mixed uniformly at 0°C to obtain the PUR surface layer polyurethane resin.

[0097] Example 9 differs from Example 1 in that in the preparation method of the B component of the PUR surface layer polyurethane resin, 5.14 parts by weight of maleic acid diamine, 5.32 parts by weight of 1,6-hexanediol, 0.02 parts by weight of dibutyltin dilaurate T12, 2 parts of a free radical initiator-dicyclohexyl peroxydicarbonate (DCPD), and 10 parts by weight of dimethylformamide DMF are mixed uniformly. The preparation methods of the A component and the C component are the same. When used, 443.74 parts by weight of the A component, 20.48 parts by weight of the B component, and 20.6 parts by weight of the C component are mixed uniformly at 0°C to obtain the PUR surface layer polyurethane resin.

[0098] Example 10 differs from Example 1 in that in the preparation method of the B component of the PUR surface layer polyurethane resin, 3.42 parts by weight of maleic acid diamine, 7.10 parts by weight of 1,6-hexanediol, 0.02 parts by weight of dibutyltin dilaurate T12, 2 parts of a free radical initiator-dicyclohexyl peroxydicarbonate (DCPD), and 10 parts by weight of dimethylformamide DMF are mixed uniformly. The preparation methods of the A component and the C component are the same. When used, 443.74 parts by weight of the A component, 20.52 parts by weight of the B component, and 20.6 parts by weight of the C component are mixed uniformly at 0°C to obtain the PUR surface layer polyurethane resin.

[0099] Comparative Example 1 differs from Example 1 in that in the preparation method of the A component of the silicone wear-resistant resin, 24 parts by weight of vinyl silicone oil Andisil Vs 1000 and 65.9 parts by weight of vinyl silicone oil Andisil Vs 400 are mixed uniformly to obtain the A component.

[0100] The difference between Comparative Example 2 and Example 1 is that in the preparation method of the A component of the PUR surface layer polyurethane resin, 80 parts by weight of polycaprolactone diol PD1-10 PCL1000 and 72 parts by weight of vinyl hydroxy silicone oil are placed in a reaction kettle, vacuum dehydration at 120°C for 2 hours, then 86.9 parts by weight of Wannate MDI-100HL, 0.04 parts by weight of dibutyltin dilaurate T12, 200 parts by weight of dimethylformamide DMF are added, the temperature is adjusted to 80°C, and the reaction is carried out for 2 hours. When the -NCO content in the system tends to be stable, the A component is obtained. The preparation methods of the B component and the C component are the same. When used, 438.94 parts by weight of the A component, 20.5 parts by weight of the B component, and 20.6 parts by weight of the C component are mixed uniformly at 0°C to obtain the PUR surface layer polyurethane resin.

[0101] The difference between Comparative Example 3 and Example 1 is that in the preparation method of the B component of the PUR surface layer polyurethane resin, 10.64 parts by weight of 1,6-hexanediol, 2 parts of radical initiator-dicyclohexyl peroxydicarbonate (DCPD), 0.02 parts by weight of dibutyltin dilaurate T12, and 10 parts by weight of dimethylformamide DMF are mixed uniformly. The preparation methods of the A component and the C component are the same. When used, 443.74 parts by weight of the A component, 20.66 parts by weight of the B component, and 20.6 parts by weight of the C component are mixed uniformly at 0°C to obtain the PUR surface layer polyurethane resin.

[0102] In step five of the preparation method of the wear-resistant and tensile power cable, the PUR surface layer polyurethane resin in step one is coated on the surface of the TPEE sheath layer 4, and is placed at 70°C for curing for 120 minutes to form a PUR primer layer 5 with a thickness of 600 microns on the outer wall of the TPEE sheath layer 4. Then, the silicone wear-resistant resin in step one is coated on the surface of the PUR primer layer 5, and is placed at 105°C for curing for 30 minutes to form a silicone wear-resistant composite layer 6 with a thickness of 200 microns on the outer wall of the surface of the PUR primer layer 5. The finished product is obtained by winding.

[0103] Performance test experiment:

[0104] 1. Tensile strength test: 500kg of tensile force is applied to both ends of the wire, the tensile force acts for 10s, the tensile force is unloaded for 10s, and the copper wire is observed for breakage after removing the protective layer.

[0105] 2. Drag chain test: the bending radius is 6 times the outer diameter of the wire, the bending frequency is 88m / min, and 50 million reciprocating movements are observed to observe whether the cable core wire has problems such as open circuit and short circuit, and whether the outer surface of the power cable has problems such as cracks and bulges.

[0106] 3. Abrasion resistance: The abrasion resistance of the silicone abrasion resistant composite layer on the test film formed by the TPEE film / PUR base coat / silicone abrasion resistant composite layer was tested according to the standard test method for determining the resistance of organic coatings by the Taber abrasion machine according to ASTM D4060-07, and the abrasion was less than 0.05 mg / cm 2 and the test film formed by the PUR base coat / silicone abrasion resistant composite layer did not have the problem of bulging, it was qualified, otherwise it was unqualified.

[0107] Table 1: Test parameter table of the cable in Examples 1-10 and Comparative Examples 1-3

[0108]

[0109] Table 2: Test parameter table of the silicone abrasion resistant composite layer in Examples 1-10 and Comparative Examples 1-3

[0110]

[0111] It can be seen from the combination of Examples 1 and Comparative Example 1 and Tables 1-2 that the addition of ethenylsilane modified nanometer molybdenum disulfide can improve the abrasion resistance of the silicone abrasion resistant composite layer, and further endow the power cable with good abrasion resistance. It can be seen from the combination of Examples 1 and Comparative Example 2 and Tables 1-2 that the PUR base coat and the silicone abrasion resistant composite layer have good bonding strength and bonding stability, which endow the power cable with good abrasion resistance, weather resistance, and excellent tensile mechanical properties and insulation safety.

[0112] It should be noted that the specific embodiments are only an explanation and description of the technical solutions of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the present specification, but as long as they are within the scope of the claims of the present application, they are protected by the Patent Law.

Claims

1. A wear resistant, tensile strength power cable, characterized by: The cable includes several cable cores (1), an elastic inner sheath (2), an insulating and tensile composite layer (3) arranged outside the elastic inner sheath (2) from inside to outside, a TPEE sheath layer (4), a PUR primer layer (5), and a silicone wear-resistant composite layer (6). The cable core (1) is located in the elastic inner sheath (2). The elastic inner sheath (2) is provided with a reinforcing wire (20). The polymer main chain of the PUR primer layer (5) contains active double bonds. The silicone wear-resistant composite layer (6) is made of a wear-resistant silicone resin. The wear-resistant silicone resin is composed of component A and component B. The component A is composed of vinyl silicone oil and vinyl silane modified nano molybdenum disulfide. The component B includes hydrogen-containing silicone oil and platinum catalyst. The amount of vinyl silane modified nano molybdenum disulfide in the silicone wear-resistant composite layer (6) is 5-10 wt%. The silicone wear-resistant composite layer (6) is connected to the PUR primer layer (5) by a chemical bond. The high-temperature free radical initiator is used to avoid the consumption of active double bonds of the PUR surface layer polyurethane resin during the curing stage at 60-75℃. The formed PUR primer layer has good flexibility. After coating the silicone wear-resistant resin, the free radical initiator decomposes to generate free radicals at 120-140℃, so that the vinyl groups in the wear-resistant silicone resin and the active double bonds in the polymer main chain of the PUR primer layer undergo double bond polymerization reaction. The silicone wear-resistant composite layer is connected to the PUR primer layer by a chemical bond.

2. A wear resistant tensile power cable according to claim 1, characterized in that: The elastic inner sheath (2) includes an elastic support frame (21) and an elastic inner ring (22). The reinforcing wire (20) is coaxially arranged in the elastic support frame (21). The elastic support frame (21) has a plurality of embedding grooves A (211) integrally formed on the outer wall. The elastic inner ring (22) has a plurality of embedding grooves B (221) integrally formed on the inner wall. The embedding grooves A (211) of the elastic support frame (21) and the embedding grooves B (221) of the elastic inner ring (22) form a cable core filling groove (10). The cable core (1) is filled in the cable core filling groove (10) of the elastic inner sheath (2).

3. A wear resistant tensile power cable according to claim 1, characterized in that: The PUR primer layer (5) is made of a PUR surface layer polyurethane resin. The PUR surface layer polyurethane is made of components A, B and C. The component A is a -NCO terminated polyurethane prepolymer. The component A is made of diisocyanate, polyester polyol, side chain branched vinyl modified double hydroxyl terminated silicone oil, organic tin catalyst, and strong polar aprotic solvent. The molar amount of -NCO in the diisocyanate is 1.4-1.6 times the sum of the molar amount of hydroxyl groups in the polyester polyol and the side chain branched vinyl modified double hydroxyl terminated silicone oil. The component B is composed of a chain extender, a free radical initiator, an organic tin catalyst, and a strong polar aprotic solvent. The ratio of the molar amount of active hydrogen in the chain extender to the molar amount of -NCO in the component A is (0.8-1):

1. The component C is an amino silane modified filler.

4. A wear resistant tensile power cable according to claim 3, characterized in that: The molar ratio of the polyester polyol to the side-linking branched vinyl-modified dihydroxyl-terminated silicone oil is 1:(0.8-1.2).

5. A wear resistant tensile power cable according to claim 3, characterized in that: The chain extender is composed of a maleic acid diamine and a small molecule diol; the small molecule diol is at least one of 1,4-butanediol, 1,6-hexanediol, 1,3-propanediol, and 1,5-pentanediol; the molar ratio of the maleic acid diamine to the small molecule diol is 1:(1-3).

6. A wear resistant, tensile strength power cable according to claim 3, characterized in that: The free radical initiator is at least one of dicumyl peroxide, dicyclohexyl peroxydicarbonate, benzoyl peroxide, and tert-butyl peroxide.

7. A wear resistant, tensile strength power cable according to claim 3, characterized in that: The amino silane modified filler is made of an amino silane and an ultra-fine inorganic filler; the amino silane is one or more combinations of γ-aminopropyl triethoxysilane, γ-aminopropyl trimethoxysilane, and N-β-(aminoethyl)-γ-aminopropyl trimethoxysilane; the ultra-fine inorganic filler is at least one of calcium carbonate, aluminum oxide, titanium white, barium sulfate, mica powder, kaolin, and attapulgite with a particle size less than 10 microns.

8. A wear resistant, tensile strength power cable according to claim 1, characterized in that: The insulating tensile-resistant composite layer (3) is composed of an insulating tensile-resistant S layer and an insulating tensile-resistant Z layer; the insulating tensile-resistant S layer is made of impregnated resin and continuous fibers through a winding forming process, and the continuous fibers in the insulating tensile-resistant S layer are wound clockwise; the insulating tensile-resistant Z layer is made of impregnated resin and continuous fibers through a winding forming process, and the continuous fibers in the insulating tensile-resistant Z layer are wound counterclockwise; the continuous fibers in the insulating tensile-resistant composite layer (3) are selected from high-strength S glass fibers.

9. A wear resistant, tensile strength power cable according to claim 1, characterized in that: The reinforcing wire (20) is any one of a glass fiber composite wire, an aramid fiber composite wire, and an UHMWPE fiber composite wire.

10. A method of manufacturing the wear resistant tensile power cable according to any one of claims 1-9, characterized by: The method comprises the following steps: Step one, an elastic support frame (21) coaxially filled with a reinforcing wire (20) is prepared through an extrusion forming process; at the same time, a PUR surface layer polyurethane resin and a wear-resistant silicone resin are configured; Step two, a cable core wire (1) is embedded in an embedding groove A (211) of the elastic support frame (21), and a TPEE resin melt material is compounded on the outer wall of the elastic support frame (21) through an extrusion forming process, and then naturally cooled to room temperature to compound an elastic inner ring (22) on the outer wall of the elastic support frame (21) to prepare an elastic inner sheath (2); Step three, the elastic inner sheath (2) is wound clockwise through a winding forming process to solidify the continuous fibers impregnated with impregnated resin to form an insulating tensile-resistant S layer, and then the continuous fibers impregnated with impregnated resin are wound counterclockwise through a winding forming process to solidify the continuous fibers to form an insulating tensile-resistant Z layer on the insulating tensile-resistant S layer, that is, the elastic inner sheath (2) forms an insulating tensile-resistant composite layer (3) to obtain a semi-product cable; Step four, a TPEE resin melt material is compounded on the outer wall of the semi-product cable through an extrusion forming process, and then naturally cooled to room temperature to compound a TPEE sheath layer (4) on the semi-product cable; Step five, a PUR surface layer polyurethane resin is coated on the surface of the TPEE sheath layer (4), and then placed at 60-75°C for 30-60 min for solidification, and then a wear-resistant silicone resin is coated, and then placed at 120-140°C for 15-60 min for solidification to obtain a finished wear-resistant tensile-resistant power cable.

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