Anti-aging corrosion-resistant graphene cable

Abstract

The application discloses an anti-aging and corrosion-resistant graphene cable, which comprises a conductor bundle, an insulation layer 1, a cotton gauze layer, a graphene layer, an insulation layer 2 and a sheath from inside to outside. Compared with the prior art, the graphene cable prepared by the application can provide excellent oxidation resistance and anti-aging performance, prolong the service life of the cable, and has excellent corrosion resistance and wear resistance, so that the graphene cable has outstanding performance in terms of power transmission, heat dissipation and mechanical protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric wire and cable, in particular to an anti-aging and corrosion-resistant graphene cable. BACKGROUND

[0002] The anti-aging and corrosion-resistant graphene cable is a cable with excellent performance, in which graphene is used as a key material in the manufacturing process of the cable. Graphene is a material composed of a single layer of carbon atoms arranged in a two-dimensional lattice, with outstanding electrical conductivity, thermal conductivity and mechanical properties, making graphene cable outstanding in terms of power transmission, heat dissipation and mechanical protection. Compared with traditional cables, the anti-aging and corrosion-resistant graphene cable has the following characteristics: high electrical conductivity, excellent thermal conductivity, high strength and flexibility, corrosion resistance and anti-aging.

[0003] In the prior art, the anti-aging and corrosion-resistant graphene cable may have the following shortcomings in terms of corrosion resistance and wear resistance: although graphene itself has good corrosion resistance, it may still have some limitations in certain corrosive media. Some extreme corrosive media or special chemicals may have a certain corrosive effect on graphene cable, reducing its corrosion resistance. Interface and bonding strength problems, at the interface between graphene and other components of the cable (such as the insulating layer, sheath, etc.), there may be a problem of insufficient bonding strength. This may lead to separation or peeling between graphene and other components during long-term use, affecting the overall corrosion resistance of the cable. Wear and tear resistance, the single-layer structure of graphene makes it vulnerable to friction and wear. In some high-wear environments, graphene cable may have surface wear, scratches or peeling, reducing its wear resistance.

[0004] In order to solve the above problems, the preparation process of graphene cable, interface bonding technology and the composite technology of graphene and other materials are improved to improve its corrosion resistance and wear resistance. At the same time, by optimizing the structure of graphene and adding other reinforcing materials, it is also expected to improve the overall performance and reliability of the cable.

[0005] The Chinese authorized invention patent CN106024168B discloses a high-insulation-resistance flame-retardant four-core cable, which comprises cable cores, an insulation layer and a sheath, the number of the cable cores is four groups, the four groups of cable cores are twisted by a bundle-twisting mode, each group of cable cores is composed of a conductor bundle twisted by a plurality of conductor wires and a high-insulation-resistance layer wrapped on the outer periphery of the conductor bundle, the number of the conductor wires on each group of cable cores is 18-20, the insulation layer is wrapped on the outer periphery of the four groups of cable cores, and the sheath is wrapped on the outer layer of the insulation layer. The application also provides a preparation method of the high-insulation-resistance flame-retardant four-core cable, which comprises the following steps: preparing the conductor bundle, preparing the cable cores, preparing the insulation layer, preparing the sheath and packaging and storing in sequence, so that the high-insulation-resistance flame-retardant four-core cable is obtained. The four-core cable has high insulation resistance and mechanical strength, strong corrosion resistance, high temperature resistance, oil resistance and cracking resistance, and a long service life. However, the four-core cable prepared by the application still has defects in corrosion resistance and wear resistance. SUMMARY

[0006] In view of the defects in the prior art, the technical problem to be solved by the application is to provide an anti-aging corrosion-resistant and wear-resistant graphene cable.

[0007] In order to achieve the above-mentioned application purposes, the application adopts the following technical solutions:

[0008] An anti-aging corrosion-resistant graphene cable comprises, from inside to outside, a conductor bundle, an insulation layer 1, a cotton gauze layer, a graphene layer, an insulation layer 2 and a sheath.

[0009] A preparation method of the anti-aging corrosion-resistant graphene cable comprises the following steps:

[0010] Step 1: preparing the conductor bundle: copper monofilament is drawn and annealed to obtain conductor wires, and the conductor wires are twisted into a conductor bundle by a bundle-twisting mode;

[0011] Step 2: preparing the insulation layer 1: polyethylene insulation material is mixed by a high-speed mixer, and then is extruded by a single-screw extruder by a conventional extrusion process. The once-formed natural crosslinked insulation layer 1 is obtained by crosslinking on the outer periphery of the conductor bundle under natural conditions, and four cable cores are twisted into a conductor layer by a bundle-twisting mode;

[0012] Step 3: cotton gauze layer: a single-layer pure cotton gauze belt is wound in a spiral manner and completely covers the outer surface of the conductor layer to form the cotton gauze layer;

[0013] Step 4: graphene layer: the cotton gauze layer is immersed in a prepared coating mixed solution, stirred and dried to immerse and coat the outer surface of the cotton gauze layer for 1-3 times to obtain the graphene layer;

[0014] Step 5, preparation of the insulation layer 2: PVC filled plastic is used by mixing and then melting in a single screw extruder, and a conventional extrusion process is used to extrude and coat the outer periphery of the graphene layer to obtain the insulation layer 2;

[0015] Step 6, preparation of the sheath: halogen-free flame-retardant polyolefin sheath material and functional material are mixed in a mass ratio of 2-4:1-3, then fed into an extruder, and a conventional extrusion process is used in a single screw extruder to extrude and coat a layer of sheath on the outer layer of the insulation layer to obtain a graphene cable.

[0016] The number of copper filaments in each group of conductor bundles is 15-25.

[0017] The thickness of the insulation layer 1 is 1-5 mm.

[0018] The thickness of the cotton gauze layer is 0.5-3 mm.

[0019] The thickness of the insulation layer 2 is 2 mm.

[0020] The coating mixture in step 4 is prepared by mixing graphene and ethyl acetate in a mass ratio of 1:3-6 or by mixing graphene and acetone in a mass ratio of 1:3-6.

[0021] The electron beam irradiation in step 6 is performed using 300-400 nm ultraviolet light with an illumination intensity of 2000-4000 mW / cm 2 , an illumination time of 5-15 min, and a slide distance of 15-25 cm.

[0022] The preparation method of the functional material is as follows, in parts by weight:

[0023] S1, 8-12 parts of silicon dioxide are added to 180-220 parts of a 70-90 wt% ethanol aqueous solution, ultrasonic treatment is performed for 20-40 min, the ultrasonic power is 100-300 W, and the ultrasonic frequency is 40-60 kHz, so that the silicon dioxide is uniformly dispersed in the solution, then the solution is placed in a 50-70℃ water bath, stirring is performed at a speed of 100-500 rpm, 5-10 parts of a silane compound are added during the stirring process, then 10-25 wt% dilute sulfuric acid is used to adjust the pH to 2-4, after treatment for 4-8 h, filtration is performed, washing is performed with anhydrous ethanol to ensure that the silane compound in the solvent is washed away, and drying is performed in a vacuum drying oven at 110-130℃ for 4-8 h to obtain a modified compound;

[0024] S2, dissolve 3-5 parts of the copolymer in 150-250 parts of n-hexane in a 50-70°C water bath, dissolve for 20-30 hours, then add 1-3 parts of the modified compound prepared in step S1, mix at a stirring speed of 100-500 rpm in a 50-70°C water bath for 3-6 hours, add 0.04-0.06 parts of the initiator and 0.7-0.9 parts of the crosslinking agent, continue stirring in a 50-70°C water bath for 10-30 minutes, pour the mixed glue solution into a glass surface container, dry at room temperature until the weight is constant, and obtain the functional material.

[0025] The silane compound is at least one of mercaptopropyl trimethoxysilane, 3-mercaptopropyl triethoxysilane, isobutyl trimethoxysilane, and 2-cyanoethyl triethoxysilane.

[0026] The copolymer is at least one of high-vinyl butadiene homopolymer and butadiene-styrene copolymer.

[0027] The initiator is at least one of 2,2-dimethoxy-2-phenyl phenylacetone and benzoin ethyl ether.

[0028] The crosslinking agent is at least one of 1,6-hexanedithiol and hexanethiol.

[0029] In the preparation method of the anti-aging corrosion-resistant graphene cable, the role of each substance is as follows:

[0030] The copper conductor wire is the conductive part of the cable, used for transmitting electric energy. It is drawn and annealed to improve the conductivity and flexibility.

[0031] The polyethylene insulation material has high insulation resistance and high temperature resistance. After mixing with the masterbatch, it is extruded in the extruder to form a naturally crosslinked insulation layer, providing insulation protection for the cable core.

[0032] The cotton gauze layer is wrapped around the outer surface of the cable core, providing mechanical protection and tensile strength. It can prevent the cable core from being damaged by external forces during use.

[0033] The graphene layer is the key part of the cable. By immersing the cotton gauze in a coating mixture of graphene and ethyl acetate or acetone, several layers of graphene are formed. It can provide excellent oxidation resistance and anti-aging performance, prolong the service life of the cable, and also has a shielding effect, reducing external interference to the internal current.

[0034] The PVC filled plastic is a material used to prepare the insulation layer of the cable. It is melt-extruded in a single screw extruder and coated around the outer periphery of the graphene layer to form an insulation layer. It has good insulation performance and chemical corrosion resistance.

[0035] Halogen-free flame-retardant polyolefin sheath material: Sheath is an outer layer material used to protect the cable. Halogen-free flame-retardant polyolefin sheath material is mixed with functional material in a certain proportion, and after extrusion through an extruder, it forms a sheath layer. It has flame-retardant performance and mechanical protection function.

[0036] Functional material is mixed with halogen-free flame-retardant polyolefin sheath material to provide anti-aging, wear-resistant and corrosion-resistant properties of graphene cable.

[0037] In the preparation method of functional material, the role of each substance is as follows:

[0038] Silicon dioxide is one of the main components of functional material. It can be dispersed in an ethanol aqueous solution by ultrasonic and used to prepare super-hydrophobic surface after modification. Silicon dioxide can also provide wear-resistant performance by forming chemical bonds with rubber matrix through thiol-ene reaction, enhancing the bonding force between silicon dioxide and rubber matrix.

[0039] Ethanol is one of the solvents used to prepare silicon dioxide solution. It helps to uniformly disperse silicon dioxide in the solution and provides suitable conditions for the reaction.

[0040] 3-mercaptopropyl triethoxysilane: This is a silane coupling agent used in the preparation of modified compounds. It chemically reacts with the surface of silicon dioxide in the reaction, increasing the interaction force between silicon dioxide and subsequently added butadiene-styrene copolymer, improving the stability and dispersibility of functional material.

[0041] Isobutyl trimethoxysilane: This is also a silane coupling agent used in the preparation of modified compounds. Its role is similar to that of 3-mercaptopropyl triethoxysilane, which is used to enhance the interfacial interaction between silicon dioxide and butadiene-styrene copolymer.

[0042] Dilute sulfuric acid is used to adjust the pH value of the reaction system to 3. The appropriate pH value helps to promote the reaction of silane coupling agent with silicon dioxide and form stable modified compounds.

[0043] Butadiene-styrene copolymer: This is another main component of functional material. It is dissolved in n-hexane and mixed with modified compounds to form a mixed glue solution by stirring. Butadiene-styrene copolymer has good suspension stability and dispersibility, which helps to maintain the uniformity of functional material.

[0044] 2,2-dimethoxy-2-phenylacetophenone: This is a photoinitiator added during the preparation of functional material. It can initiate mercaptoindazole reaction under ultraviolet light irradiation, promoting the reaction of mercaptan with butadiene-styrene copolymer to form a cross-linked network.

[0045] Hexanethiol is a crosslinking agent in the functional material. It works together with the photoinitiator to promote the thiol-ene reaction, crosslinking the silica with the butadiene-styrene copolymer, and enhancing the wear resistance of the functional material.

[0046] Through the above steps, each substance plays a different role in the process of preparing the anti-aging corrosion-resistant graphene cable, and together realizes the functions of conductivity, insulation, mechanical protection, and anti-aging corrosion resistance of the cable.

[0047] Compared with the prior art, the beneficial effects of the present application are:

[0048] 1) The present application forms a graphene layer on the surface of the cable core, which can provide excellent oxidation resistance and anti-aging performance due to the special structure and properties of graphene, prolonging the service life of the cable, and also has a shielding effect, reducing external interference to the internal current.

[0049] 2) The present application forms a sheath on the surface of the cable core, which can provide excellent corrosion resistance, making the cable have higher resistance to chemical substances, humidity and other environmental factors.

[0050] 4) The graphene cable prepared by the present application forms a micro-nano structure, which can realize a super-hydrophobic surface, making the cable have self-cleaning and waterproof properties, reducing the risk of water intrusion.

[0051] 5) The chemical bonding between the modified compound and the rubber matrix in the sheath prepared by the present application increases the bonding force between the silica and the rubber matrix, improves the wear resistance of the cable, and reduces the possibility of wear and damage. DETAILED DESCRIPTION

[0052] Main material sources:

[0053] Halogen-free flame-retardant polyolefin sheath material: Ruilong Plastic Industry Co., Ltd. in Yancheng, model number: 12.

[0054] Butadiene-styrene copolymer: Dongguan Polyolefin New Material Co., Ltd., model number: HFA703.

[0055] High-vinyl butadiene homopolymer: Shanghai Wanda Chemical Co., Ltd., model number: Ricon 150.

[0056] Polyethylene insulation material: Dongguan Huaying Plastic Co., Ltd., item number: 7200.

[0057] Copper monofilament: Tianjin Jinyata Steel Co., Ltd., item number: 23-10-22, diameter: 0.08mm.

[0058] Silicon dioxide: Jiangsu Ruicheng Biological Technology Co., Ltd., item number: 163, particle size: 2000 mesh.

[0059] Pure cotton gauze tape: Qianyuan District Bridge One Cotton Gauze Factory in Baoding, item number: 16 gauze.

[0060] PVC filled plastic: Dongguan Shunyida Plastic Raw Material Co., Ltd., item number: S-70.

[0061] Graphene: Henan Shuncheng Chemical Product Co., Ltd., item number: 122, density: 0.12 g / cm 3 , scale size: 0.012 mm. Example 1

[0062] A preparation method of an anti-aging corrosion-resistant graphene cable includes the following steps:

[0063] Step 1, preparing a conductor bundle: copper monofilament is drawn and annealed to obtain a conductor wire, and 20 conductor wires are twisted into a conductor bundle by bundle twisting;

[0064] Step 2, preparing an insulation layer 1: polyethylene insulation material is mixed by a high-speed mixer, then extruded by a single-screw extruder using a conventional extrusion process, and cross-linked under natural conditions on the outer periphery of the conductor bundle to obtain a primary molding natural cross-linked insulation layer 1, the insulation layer 1 has a thickness of 3 mm, forming a cable core, and four cable cores are twisted into a conductive layer by bundle twisting;

[0065] Step 3, cotton gauze layer: a single layer of pure cotton gauze tape is wound in a spiral manner and completely covers the outer surface of the conductive layer to form the cotton gauze layer, and the cotton gauze layer has a thickness of 1 mm;

[0066] Step 4, graphene layer: the cotton gauze layer is immersed in a prepared coating mixed solution, stirred, and dried, and the outer surface of the cotton gauze layer is immersed and coated 3 times to obtain a graphene layer; the coating mixed solution is prepared by mixing graphene and ethyl acetate at a mass ratio of 1:5;

[0067] Step 5, preparing an insulation layer 2: PVC filled plastic is mixed and then melted in a single-screw extruder using a conventional extrusion process, and coated on the outer periphery of the graphene layer to obtain an insulation layer 2, and the insulation layer 2 has a thickness of 2 mm;

[0068] Step 6, preparing a sheath: halogen-free flame-retardant polyolefin sheath material and functional material are mixed at a mass ratio of 3:2, then fed into an extruder, and extruded by a single-screw extruder using a conventional extrusion process, and a sheath is coated on the outer layer of the insulation layer by electron beam irradiation cross-linking, the electron beam irradiation is performed by irradiation of 365 nm ultraviolet light, the light intensity is 3000 mW / cm 2 , the light irradiation time is 10 min, the distance between the lamp sheet is 20 cm, the sheath has a thickness of 3 mm, and a graphene cable is obtained.

[0069] The preparation method of the functional material is as follows:

[0070] S1, 10g of silica was added to 200g of 80wt% ethanol aqueous solution, ultrasonic treatment for 30min, ultrasonic power was 200W, ultrasonic frequency was 60kHz, so that the silica was uniformly dispersed in the solution, then the solution was placed in a 60°C water bath, stirred at a speed of 300rpm, 8g of 3-mercaptopropyltriethoxysilane was added during stirring, then the pH was adjusted to 3 with 20wt% dilute sulfuric acid, after treatment for 6h, filtration, washing with anhydrous ethanol, ensuring that the silane compound in the solvent was washed away, drying in a 120°C vacuum drying oven for 6h, to obtain a modified compound;

[0071] S2, 4g of butadiene-styrene copolymer was dissolved in 200g of n-hexane in a 60°C water bath, dissolved for 24h, then 2g of the modified compound prepared in step S1 was added, mixed in a 60°C water bath at a stirring speed of 400rpm for 5h, 0.05g of benzoin ethyl ether and 0.8g of hexanethiol were added, and stirring was continued in a 60°C water bath for 20min, the mixed glue solution was poured into a glass surface container with a diameter of 60mm, dried to constant weight at room temperature, to obtain a functional material. Example 2

[0072] A preparation method of an anti-aging corrosion-resistant graphene cable line is basically the same as that of Example 1, the only difference is that the preparation method of the functional material is different.

[0073] The preparation method of the functional material is as follows:

[0074] S1, 10g of silica was added to 200g of 80wt% ethanol aqueous solution, ultrasonic treatment for 30min, ultrasonic power was 200W, ultrasonic frequency was 60kHz, so that the silica was uniformly dispersed in the solution, then the solution was placed in a 60°C water bath, stirred at a speed of 300rpm, 8g of 3-mercaptopropyltriethoxysilane was added during stirring, then the pH was adjusted to 3 with 20wt% dilute sulfuric acid, after treatment for 6h, filtration, washing with anhydrous ethanol, ensuring that the silane compound in the solvent was washed away, drying in a 120°C vacuum drying oven for 6h, to obtain a modified compound;

[0075] S2, 4g of butadiene-styrene copolymer was dissolved in 200g of n-hexane in a 60°C water bath, dissolved for 24h, then 2g of the modified compound prepared in step S1 was added, mixed in a 60°C water bath at a stirring speed of 400rpm for 5h, 0.05g of benzoin ethyl ether and 0.8g of hexanethiol were added, and stirring was continued in a 60°C water bath for 20min, the mixed glue solution was poured into a glass surface container with a diameter of 60mm, dried to constant weight at room temperature, to obtain a functional material. Example 3

[0076] The preparation method of the anti-aging corrosion-resistant graphene cable is basically the same as that of example 1, and the only difference is that the preparation method of the functional material is different.

[0077] The preparation method of the functional material is as follows:

[0078] S1, 10g of silicon dioxide is added to 200g of 80wt% ethanol aqueous solution, ultrasonic treatment for 30min, ultrasonic power is 200W, ultrasonic frequency is 60kHz, so that the silicon dioxide is uniformly dispersed in the solution, then the solution is placed in a 60℃ water bath, stirred at a speed of 300rpm, 8g of 2-cyanoethyl triethoxysilane is added during stirring, then the pH is adjusted to 3 with 20wt% dilute sulfuric acid, treated for 6h, filtered, washed with anhydrous ethanol to ensure that the silane compounds in the solvent are washed away, dried in a 120℃ vacuum drying oven for 6h, and a modified compound is obtained;

[0079] S2, 4g of butadiene-styrene copolymer is dissolved in 200g of n-hexane in a 60℃ water bath, dissolved for 24h, then 2g of the modified compound prepared in step S1 is added, mixed in a 60℃ water bath at a stirring speed of 400rpm for 5h, 0.05g of benzoin ether and 0.8g of hexanethiol are added, and stirring is continued in a 60℃ water bath for 20min, the mixed glue liquid is poured into a glass surface container with a diameter of 60mm, and dried at room temperature to constant weight to obtain the functional material. Example 4

[0080] The preparation method of the anti-aging corrosion-resistant graphene cable is basically the same as that of example 1, and the only difference is that the preparation method of the functional material is different.

[0081] The preparation method of the functional material is as follows:

[0082] S1, 10g of silicon dioxide is added to 200g of 80wt% ethanol aqueous solution, ultrasonic treatment for 30min, ultrasonic power is 200W, ultrasonic frequency is 60kHz, so that the silicon dioxide is uniformly dispersed in the solution, then the solution is placed in a 60℃ water bath, stirred at a speed of 300rpm, 8g of 2-cyanoethyl triethoxysilane is added during stirring, then the pH is adjusted to 3 with 20wt% dilute sulfuric acid, treated for 6h, filtered, washed with anhydrous ethanol to ensure that the silane compounds in the solvent are washed away, dried in a 120℃ vacuum drying oven for 6h, and a modified compound is obtained;

[0083] S2, 4 g of butadiene-styrene copolymer was dissolved in 200 g of n-hexane in a 60°C water bath for 24 h, then 2 g of the modified compound prepared in step S1 was added, mixed at 400 rpm for 5 h in a 60°C water bath, 0.05 g of benzoin ether and 0.8 g of hexanethiol were added, and stirring was continued at 60°C for 20 min. The mixed glue solution was poured into a glass surface container with a diameter of 60 mm, and dried to constant weight at room temperature to obtain the functional material.

[0084] Comparative Example 1

[0085] A method for preparing an anti-aging and corrosion-resistant graphene cable line is basically the same as that of Example 1, the only difference being that the method for preparing the functional material is different.

[0086] The method for preparing the functional material is as follows:

[0087] S1, 10 g of silicon dioxide was added to 200 g of 80 wt% aqueous ethanol solution, and ultrasonic treatment was performed for 30 min at an ultrasonic power of 200 W and an ultrasonic frequency of 60 kHz to disperse the silicon dioxide uniformly in the solution. Then the solution was placed in a 60°C water bath and stirred at a speed of 300 rpm. During stirring, 8 g of 3-mercaptopropyl triethoxysilane was added, and then the pH was adjusted to 3 with 20 wt% dilute sulfuric acid. After treatment for 6 h, filtration was performed, and washing with anhydrous ethanol was performed to ensure that the silane compound in the solvent was washed away. Drying was performed in a 120°C vacuum drying oven for 6 h to obtain a modified compound;

[0088] S2, 4 g of butadiene-styrene copolymer was dissolved in 200 g of n-hexane in a 60°C water bath for 24 h, then 2 g of the modified compound prepared in step S1 was added, mixed at 400 rpm for 5 h in a 60°C water bath, 0.05 g of benzoin ether and 0.8 g of hexanethiol were added, and stirring was continued at 60°C for 20 min. The mixed glue solution was poured into a glass surface container with a diameter of 60 mm, and dried to constant weight at room temperature to obtain the functional material.

[0089] Comparative Example 2

[0090] A method for preparing an anti-aging and corrosion-resistant graphene cable line is basically the same as that of Example 1, the only difference being that the method for preparing the functional material is different.

[0091] The method for preparing the functional material is as follows:

[0092] S1, 10 g of silica was added to 200 g of 80 wt% ethanol aqueous solution, ultrasonic for 30 min, ultrasonic power was 200 W, ultrasonic frequency was 60 kHz, so that the silica was uniformly dispersed in the solution, then the solution was placed in a 60°C water bath, stirred at a speed of 300 rpm, 8 g of 3-mercaptopropyltrimethoxysilane was added during stirring, then the pH was adjusted to 3 with 20 wt% dilute sulfuric acid, treated for 6 h, filtered, washed with anhydrous ethanol to ensure that the silane compound in the solvent was washed away, dried in a 120°C vacuum drying oven for 6 h to obtain a modified compound;

[0093] S2, 4 g of butadiene-styrene copolymer was dissolved in 200 g of n-hexane in a 60°C water bath, dissolved for 24 h, then 2 g of the modified compound prepared in step S1 was added, mixed at a stirring speed of 400 rpm in a 60°C water bath for 5 h, 0.05 g of 2,2-dimethoxy-2-phenylacetophenone and 0.8 g of hexanethiol were added, and stirring was continued in a 60°C water bath for 20 min, the mixed glue solution was poured into a glass surface container with a diameter of 60 mm, dried to constant weight at room temperature to obtain a functional material.

[0094] Comparative Example 3

[0095] A preparation method of an anti-aging corrosion-resistant graphene cable line is basically the same as that of Embodiment 1, the only difference being that the preparation method of the functional material is different.

[0096] The preparation method of the functional material is as follows:

[0097] S1, 10 g of silica was added to 200 g of 80 wt% ethanol aqueous solution, ultrasonic for 30 min, ultrasonic power was 200 W, ultrasonic frequency was 60 kHz, so that the silica was uniformly dispersed in the solution, then the solution was placed in a 60°C water bath, stirred at a speed of 300 rpm, 8 g of 3-mercaptopropyltrimethoxysilane was added during stirring, then the pH was adjusted to 3 with 20 wt% dilute sulfuric acid, treated for 6 h, filtered, washed with anhydrous ethanol to ensure that the silane compound in the solvent was washed away, dried in a 120°C vacuum drying oven for 6 h to obtain a modified compound;

[0098] S2, 4 g of butadiene-styrene copolymer was dissolved in 200 g of n-hexane in a 60°C water bath, dissolved for 24 h, then 2 g of the modified compound prepared in step S1 was added, mixed at a stirring speed of 400 rpm in a 60°C water bath for 5 h, 0.05 g of 2,2-dimethoxy-2-phenylacetophenone and 0.8 g of hexanethiol were added, and stirring was continued in a 60°C water bath for 20 min, the mixed glue solution was poured into a glass surface container with a diameter of 60 mm, dried to constant weight at room temperature to obtain a functional material.

[0099] Comparative Example 4

[0100] A preparation method of an anti-aging corrosion-resistant graphene cable line is basically the same as that in Embodiment 1, and the only difference is that the preparation method of the functional material is different.

[0101] The preparation method of the functional material is as follows:

[0102] S1, 10g of silicon dioxide was added to 200g of 80wt% ethanol aqueous solution, ultrasonic treatment for 30min, ultrasonic power was 200W, ultrasonic frequency was 60kHz, so that the silicon dioxide was uniformly dispersed in the solution, then the solution was placed in a 60℃ water bath, stirred at a speed of 300rpm, 8g of 3-mercaptopropyltrimethoxysilane was added during stirring, then the pH was adjusted to 3 with 20wt% dilute sulfuric acid, after treatment for 6h, filtration, washing with anhydrous ethanol, ensuring that the silane compound in the solvent was washed away, drying in a 120℃ vacuum drying oven for 6h, to obtain a modified compound;

[0103] S2, 4g of butadiene-styrene copolymer was dissolved in 200g of n-hexane in a 60℃ water bath, dissolved for 24h, then 2g of the modified compound prepared in step S1 was added, mixed in a 60℃ water bath at a stirring speed of 400rpm for 5h, 0.05g of benzoin ether and 0.8g of 1,6-hexanedithiol were added, and stirring was continued in a 60℃ water bath for 20min, the mixed glue solution was poured into a glass surface container with a diameter of 60mm, and dried to constant weight at room temperature to obtain a functional material.

[0104] Comparative Example 5

[0105] A preparation method of an anti-aging corrosion-resistant graphene cable line is basically the same as that in Embodiment 1, and the only difference is that the preparation method of the functional material is different.

[0106] The preparation method of the functional material is as follows:

[0107] S1, 10g of silicon dioxide was added to 200g of 80wt% ethanol aqueous solution, ultrasonic treatment for 30min, ultrasonic power was 200W, ultrasonic frequency was 60kHz, so that the silicon dioxide was uniformly dispersed in the solution, then the solution was placed in a 60℃ water bath, stirred at a speed of 300rpm, 8g of 3-mercaptopropyltrimethoxysilane was added during stirring, then the pH was adjusted to 3 with 20wt% dilute sulfuric acid, after treatment for 6h, filtration, washing with anhydrous ethanol, ensuring that the silane compound in the solvent was washed away, drying in a 120℃ vacuum drying oven for 6h, to obtain a modified compound;

[0108] S2, in a 60℃ water bath, 4g high-vinyl butadiene homopolymer was dissolved in 200g n-hexane for 24h, then 2g modified compound prepared in step S1 was added, mixed at 400rpm for 5h in a 60℃ water bath, 0.05g 2,2-dimethoxy-2-phenylacetophenone and 0.8g 1,6-hexanedithiol were added, and the mixture was continuously stirred in a 60℃ water bath for 20min, the mixed glue liquid was poured into a glass surface container with a diameter of 60mm, and dried at room temperature to constant weight to obtain the functional material.

[0109] Test Example 1

[0110] Corrosion resistance test

[0111] Take 50g of the graphene cable prepared in the application in a glass culture dish and dry it in an oven. Take three clean beakers and prepare 10wt% concentration of hydrochloric acid, saturated sodium chloride aqueous solution and 10wt% concentration of NaOH aqueous solution respectively, immerse the sample in the prepared solution respectively, keep the sealed environment for 45 days, then take out the sample and observe the surface corrosion. The test results are shown in Table 1.

[0112] Table 1 Corrosion resistance test results

[0113] Experimental protocol 10 wt% hydrochloric acid Saturated aqueous sodium chloride solution 10 wt% aqueous NaOH solution Example 1 No blisters, little discoloration No blisters, no discoloration No blisters, little discoloration Example 2 No blisters, little discoloration No blisters, no discoloration No blisters, little discoloration Example 3 No blisters, little discoloration No blisters, no discoloration No blisters, little discoloration Example 4 No blisters, no discoloration No blisters, no discoloration No blisters, no discoloration Comparative Example 1 Few blisters, partial discoloration No blisters, partial discoloration Few blisters, partial discoloration Comparative Example 2 Few blisters, partial discoloration No blisters, partial discoloration Few blisters, partial discoloration Comparative Example 3 Few blisters, little discoloration No blisters, little discoloration Few blisters, partial discoloration Comparative Example 4 No blisters, little discoloration No blisters, little discoloration No blisters, little discoloration Comparative Example 5 Many blisters, much discoloration Few blisters, partial discoloration Many blisters, much discoloration

[0114] Test Example 2

[0115] Abrasion resistance test

[0116] Take 20g of the sheath material prepared in the application and process it into a cuboid, fix it on the abrasion tester, apply a weight of 10N, and perform 5000 times of scraping, then take it down and weigh it, the mass loss after abrasion (abrasion loss) is taken as the parameter for evaluating the abrasion resistance of the material, and the specific experimental data results are shown in Table 2.

[0117] Table 2 Abrasion resistance test results

[0118] Experimental protocol Wear (mg) Example 1 361.2 Example 2 359.1 Example 3 378.5 Example 4 312.0 Comparative Example 1 581.9 Comparative Example 2 642.7 Comparative Example 3 672.4 Comparative Example 4 690.4 Comparative Example 5 943.8

[0119] From the test data in Table 1 and Table 2, it can be seen that the graphene cable prepared in Example 4 of the application has good corrosion resistance and abrasion resistance.

[0120] Comparing Example 4 with Example 1, the use of isobutyl trimethoxysilane can cooperate with 3-mercaptopropyl triethoxysilane to form a more stable chemical bond and provide additional corrosion protection. This combination can enhance the corrosion resistance of the cable, making it more suitable for harsh environmental conditions. The modification of silica by silanization reaction is beneficial to subsequent reactions, reduces the agglomeration of silica, forms a cross-linked network structure, realizes the chemical bonding of silica and rubber matrix, and increases the bonding force between silica and rubber matrix. This cross-linked network can enhance wear resistance.

Claims

1. A method of preparing an anti-aging corrosion-resistant graphene cable line, characterized by, From inside to outside, the cable includes a conductor bundle, an insulation layer 1, a cotton gauze layer, a graphene layer, an insulation layer 2 and a sheath; The preparation method of the anti-aging corrosion-resistant graphene cable comprises the following steps: Step 1, preparing the conductor bundle: copper monofilament is drawn and annealed to obtain a conductor wire, and the conductor wire is twisted into a conductor bundle by bundle twisting; Step 2, preparing the insulation layer 1: polyethylene insulation material is mixed by a high-speed mixer, then is extruded by a single screw extruder through a conventional extrusion process, and is crosslinked at the outer periphery of the conductor bundle under natural conditions to obtain a primary formed natural crosslinked insulation layer 1, forming a cable core, and four cable cores are twisted into a conductive layer by bundle twisting; Step 3, cotton gauze layer: a single layer of pure cotton gauze tape is wound in a spiral manner and completely covers the outer surface of the conductive layer to form the cotton gauze layer; Step 4, graphene layer: the cotton gauze layer is immersed in the prepared coating mixed solution, stirred, and dried to immerse and coat 1-3 times on the outer surface of the cotton gauze layer to obtain the graphene layer; Step 5, preparing the insulation layer 2: PVC filled plastic is mixed, then is melted in a single screw extruder through a conventional extrusion process, and is coated on the outer periphery of the graphene layer to obtain the insulation layer 2; Step 6, preparing the sheath: halogen-free flame-retardant polyolefin sheath material and functional material are mixed according to a mass ratio of 2-4:1-3, then are fed into an extruder, are extruded by a single screw extruder through a conventional extrusion process, and are crosslinked by electron beam irradiation to coat a layer of sheath on the outer layer of the insulation layer to obtain the graphene cable; The preparation method of the functional material is as follows, in terms of weight parts: S1, 8-12 parts of silicon dioxide are added to 180-220 parts of 70-90wt% ethanol aqueous solution, ultrasonic treatment is performed for 20-40 min, the ultrasonic power is 100-300 W, and the ultrasonic frequency is 40-60 kHz, so that the silicon dioxide is uniformly dispersed in the solution, then the solution is placed in a 50-70℃ water bath, stirring is performed at a speed of 100-500 rpm, 5-10 parts of a silane compound is added during the stirring process, then 10-25wt% dilute sulfuric acid is used to adjust the pH to 2-4, treatment is performed for 4-8 h, then filtration is performed, washing is performed with anhydrous ethanol, the silane compound in the solvent is ensured to be washed away, drying is performed in a vacuum drying box at 110-130℃ for 4-8 h to obtain a modified compound; S2, 3-5 parts of a copolymer are dissolved in 150-250 parts of n-hexane in a 50-70℃ water bath, dissolution is performed for 20-30 h, then 1-3 parts of the modified compound prepared in step S1 is added, mixing is performed in a 50-70℃ water bath at a stirring speed of 100-500 rpm for 3-6 h, 0.04-0.06 parts of an initiator and 0.7-0.9 parts of a crosslinking agent are added, stirring is continued in a 50-70℃ water bath for 10-30 min, the mixed glue liquid is poured into a glass surface container, and drying is performed at room temperature until the weight is constant to obtain the functional material; The silane compound is a mixture of 3-mercaptopropyl triethoxysilane and isobutyl trimethoxysilane; The copolymer is a butadiene-styrene copolymer; The initiator is benzoin ethyl ether; The crosslinking agent is hexanethiol.

2. The method for preparing an anti-aging and corrosion-resistant graphene cable as described in claim 1, characterized in that, The number of conductor wires in each group of conductor bundles is 15-25; The thickness of the insulation layer 1 is 1-5 mm; The thickness of the cotton gauze layer is 0.5-3 mm; The thickness of the insulation layer 2 is 2 mm.

3. The method for preparing an anti-aging and corrosion-resistant graphene cable as described in claim 1, characterized in that, The coating mixture in step 4 is prepared by mixing graphene and ethyl acetate at a mass ratio of 1:3-6 or by mixing graphene and acetone at a mass ratio of 1:3-6.

4. The method for preparing an anti-aging and corrosion-resistant graphene cable as described in claim 1, characterized in that, The electron beam irradiation in step 6 is irradiation with 300-400 nm ultraviolet light, the light intensity is 2000-4000 mW / cm 2 , the light time is 5-15 min, and the slide distance is 15-25 cm.

5. An anti-aging corrosion resistant graphene cable, characterized by, The preparation method is prepared by using the preparation method in any one of claims 1-4.