Active cable made of black phosphorus-graphene oxide

Abstract

The invention relates to the technical field of active cables, in particular to an active cable made of black phosphorus-graphene oxide. The active cable is provided with a plurality of electrical cores, each electrical core comprises a pair of parallel wire assemblies, an outer shielding layer is arranged on the outer side of each wire assembly, and a wire pair shielding layer and a sheath layer are sequentially arranged on the outer side of each outer shielding layer in a sleeving mode; the wire assembly comprises an inner conductor and an inner shielding layer which are coaxially arranged, and the inner shielding layer wraps the outer side of the inner conductor; the inner surface of the outer shielding layer and the outer surface of the inner shielding layer form a cavity, and the cavity is filled with an insulating layer. The inner shielding layer is a black phosphorus-graphene oxide film inner shielding layer. According to the active cable, the inner shielding layer made of black phosphorus-graphene oxide is arranged outside the inner conductor, so that the active cable has the advantages of long-distance transmission, high temperature resistance, good mechanical performance and the like.

Description

Technical Field

[0001] The present invention relates to the field of communications, especially the field of active cables, and specifically to an active cable made of black phosphorus-graphene oxide. Background Art

[0002] An active cable refers to a cable that integrates active components, such as amplifiers, filters, etc., inside the cable to achieve some special functions. Compared with ordinary passive cables, active cables can provide the ability to enhance the transmission performance of electrical signals, such as signal amplification and filtering, and are widely used in signal transmission in fields such as telecommunications, radio and television, military, aerospace, etc.

[0003] The AEC active cable was released by the HiWire Alliance, and the HiWire AEC specification defines the standards for basic electrical and mechanical specifications. The faster the maximum transmission rate of the active cable, the shorter the limit of the transmission distance. Generally, the length of the active cable is within 10m. Therefore, it is necessary to improve the composition and / or structure of the active cable in the prior art to ensure the ability to transmit electromagnetic signals over a longer distance. While ensuring the effective transmission distance of the active cable, issues such as the mechanical ability and high-temperature resistance of the cable also need to be considered. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies in the prior art and provide an active cable made of black phosphorus-graphene oxide. In this active cable, an inner shielding layer made of black phosphorus-graphene oxide is provided outside the inner conductor. This structure can endow the active cable with advantages such as long-distance transmission, high-temperature resistance, and good mechanical properties. In addition, this active cable can be applied in fields such as chassis distributed connection and external field wiring layout.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] An active cable made of black phosphorus-graphene oxide, having a plurality of cores, each core including a pair of wire assemblies arranged in parallel. An outer shielding layer is provided outside the wire assemblies, and a pair shielding layer and a sheath layer are sequentially sleeved outside the outer shielding layer;

[0007] The wire assembly includes a coaxially arranged inner conductor and an inner shielding layer, and the inner shielding layer wraps outside the inner conductor;

[0008] A cavity is formed between the inner surface of the outer shielding layer and the outer surface of the inner shielding layer, and the cavity is filled with an insulating layer;

[0009] The inner shielding layer is an inner shielding layer of black phosphorus-graphene oxide film.

[0010] The black phosphorus-graphene oxide film of this active cable is a semiconductor architecture. As is well known, there is usually a contradiction between conductivity and mechanical properties. The doping of black phosphorus can effectively improve the mechanical strength and toughness of the graphene structure, compensate for the decline in mechanical properties, and maintain high conductivity by optimizing the conductive filler. The composite structure cable of graphene and black phosphorus can make the electric field distribution inside the cable more uniform, improve the mechanical capabilities such as anti-bending and anti-extrusion, reduce the damage of external forces to the insulating layer, and thus improve the anti-interference ability.

[0011] Further, the active cable made of black phosphorus-graphene oxide further includes a drainage wire, which is made of tinned copper wire. The drainage wire is inserted into the outer shielding layer and is located in the center of a pair of wire assemblies.

[0012] Further, the inner conductor is a copper wire with a diameter of 0.506 mm to 0.510 mm.

[0013] Further, the insulating layer is made of polyvinyl chloride (PVC) material, and the thickness of the insulating layer is 0.30 mm to 0.35 mm.

[0014] Further, the outer shielding layer is made of copper material, and the thickness of the outer shielding layer is 0.10 mm to 0.30 mm.

[0015] Further, the pair shielding layer is made of tinned copper mesh. The outer diameter of the mesh wire of the tinned copper mesh ranges from 0.10 mm to 0.20 mm, and the braiding density of the tinned copper mesh should not be less than 85%. The tinned copper mesh can prevent external electromagnetic wave interference.

[0016] Further, the sheath layer is made of perfluoroethylene propylene copolymer (FEP), and the thickness of the sheath layer is 0.33 mm to 0.68 mm. The sheath layer can improve the high-temperature resistance of the cable.

[0017] Further, the preparation method of the inner shielding layer of the black phosphorus-graphene oxide film includes the following:

[0018] Step S1: Clean and polish the inner conductor with deionized water;

[0019] Step S2: Add black phosphorus (BP) powder into an N-methylpyrrolidone aqueous solution, then perform ultrasonic ice-water bath, and finally obtain black phosphorus nanosheets after precipitation and drying;

[0020] Step S3: Add the black phosphorus nanosheets prepared in Step S2 into the graphene oxide nano-dispersion liquid. The mass ratio of the graphene oxide nano-dispersion liquid to the black phosphorus nanosheets is 1:2, and then perform ultrasonic water bath for about 10 min until a brown solution is formed and then stop;

[0021] Step S4: Let the brown solution prepared in step S3 stand for 4 h, filter the solution, and vacuum-dry the obtained solid at 50 °C for 12 h;

[0022] Step S5: Take out the solid dried in step S4, add HI solution at room temperature, carry out a chemical reduction reaction for 5 h to obtain a reactant, wash the reactant with ethanol, and obtain black phosphorus-graphene oxide solid;

[0023] Step S6: Dissolve the black phosphorus-graphene oxide solid prepared in step S5 in water to prepare a black phosphorus-graphene oxide aqueous solution, then immerse the inner conductor in the aqueous solution for 1 h, so that a black phosphorus-graphene oxide thin film layer is self-assembled on the surface of the inner conductor, and the thickness of the black phosphorus-graphene oxide thin film is 1 μm;

[0024] Step S7: Sample and cut the black phosphorus-graphene oxide thin film conductor prepared in step S6, carry out physical characterization by scanning electron microscopy, measure the film thickness, and if the thickness requirement is met, subsequent processing operations of the insulating layer, outer shielding layer, drainage line, pair shielding layer and sheath layer can be carried out.

[0025] The above preparation method is a chemical method, which is convenient for large-scale preparation and has low production cost; secondly, for the raw material black phosphorus-graphene oxide solid for making cables, the purity requirement can be lower, and it does not need to be more than 99% pure. Therefore, the purification steps will be reduced, thereby saving time cost and production cost.

[0026] Further, in step S3, the concentration of the graphene oxide nano-dispersion is 5 mg / mL.

[0027] Further, in the black phosphorus-graphene oxide aqueous solution in step S6, the mass fraction of black phosphorus-graphene oxide is 0.5%.

[0028] The beneficial effects of the present invention are as follows: The present invention is reasonably designed and has the following advantages:

[0029] (1). The inner shielding layer is a black phosphorus-graphene oxide thin film, which can ensure the transmission strength of the active cable during transmission, so that electromagnetic signals can be transmitted over a long distance and can provide a good heat insulation environment. At the same time, it can effectively resist external high temperature and anti-bending ability;

[0030] (2). The pair shielding layer uses tinned copper mesh to prevent external electromagnetic wave interference;

[0031] (3). With the rise of current artificial intelligence and the continuous expansion of scenario applications, the present invention can meet the layout efficiency and functional requirements of corresponding devices, and has good economic benefits and social values. Description of the Drawings

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 is a schematic structural diagram of the longitudinal section of the present invention;

[0034] Figure 2 is a schematic structural diagram of the cross-section of the present invention.

[0035] In the figure: 1. Inner conductor, 2. Inner shielding layer, 3. Insulating layer, 4. Outer shielding layer, 5. Drain wire, 6. Pair shielding layer, 7. Sheath layer. Specific Embodiments

[0036] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0039] Embodiment 1

[0040] As Figure 1 and Figure 2An active cable made of black phosphorus-graphene oxide is shown, which has multiple battery cores. Each battery core includes a pair of wire assemblies arranged in parallel. An outer shielding layer 4 is provided outside the wire assemblies. A pair shielding layer 6 and a sheath layer 7 are sequentially sleeved outside the outer shielding layer 4. The wire assembly includes a coaxial inner conductor 1 and an inner shielding layer 2, and the inner shielding layer 2 is wrapped outside the inner conductor 1. A cavity is formed between the inner surface of the outer shielding layer 4 and the outer surface of the inner shielding layer 2, and an insulating layer 3 is filled in the cavity. The inner shielding layer 2 is a black phosphorus-graphene oxide film inner shielding layer.

[0041] In the black phosphorus-graphene oxide film, black phosphorus can serve as the basic framework of this film layer. On the one hand, it can improve the mechanical strength and toughness of the graphene film, and on the other hand, as a fireproof and heat-insulating material, it can enhance the high-temperature resistance. Due to the surface covalent bonds and π-stacking effects of black phosphorus-graphene oxide, a graphene film material with high density is obtained, improving the toughness of the composite film and facilitating the combination with media interfaces such as metals.

[0042] This active cable made of black phosphorus-graphene oxide also includes a drainage wire 5. The drainage wire 5 is made of tinned copper wire. The drainage wire 5 is inserted into the outer shielding layer 4 and is located in the center of a pair of wire assemblies.

[0043] The drainage wire 5 is made of tinned copper wire. The tinned copper wire can prevent the generation of verdigris. In addition, its material is soft and its electrical conductivity is good. The tinned copper wire has a long service life under weak current conditions.

[0044] The manufacturing process of the tinned copper wire is as follows: Select a copper wire with a diameter of 0.3 mm to 0.5 mm, and the surface is smooth and round. Then perform annealing, and the temperature is set at about 500 °C. The annealed copper wire is cleaned in an environment with a pH value of about 1.2 to ensure the adhesion of the tin layer and the copper wire. The copper wire is put into a tin furnace for calcination. After tin plating, it is cooled, and guide shaft oil is added to prevent the generation of tin ash. Finally, the tinned copper wire is drawn into a drainage wire 5 with a diameter of 0.3 mm to 0.5 mm.

[0045] The inner conductor 1 is a copper wire with a diameter of 0.510 mm.

[0046] The processing of the insulating layer 3 is as follows: Polyvinyl chloride (PVC) is a non-crystalline material and is in a viscous flow state during insulation processing. At this time, the temperature of PVC is only 160 - 180 °C, while the decomposition temperature of black phosphorus-graphene oxide is much higher than this and the surface covalent bonds and π-crosslinking effects have excellent binding properties. Therefore, there is no need to worry about the black phosphorus-graphene oxide film layer being damaged during the manufacturing process. For the PVC insulating layer 3, the thickness attached to the outside of the inner shielding layer 2 is 0.35 mm.

[0047] The outer shielding layer 4 is made of copper material and is wrapped outside the insulating layer 3 by plastic electroplating. The thickness of the outer shielding layer 4 is 0.30 mm.

[0048] The pair shield layer 6 is made of tinned copper mesh. The outer diameter of the wire of the tinned copper mesh is 0.20 mm, and the braiding density of the tinned copper mesh should not be less than 85%. The tinned copper mesh can prevent external electromagnetic wave interference.

[0049] The sheath layer 7 is made of perfluoroethylene propylene copolymer. The thickness of the sheath layer 7 is 0.68 mm. The sheath layer 7 is extruded outside the pair shield layer 6 to improve the high temperature resistance of the cable.

[0050] The above-mentioned black phosphorus-graphene oxide film inner shield layer includes the following preparation method:

[0051] Step S1: Clean and polish the inner conductor 1 with deionized water;

[0052] Step S2: Add black phosphorus powder into an N-methylpyrrolidone aqueous solution, then perform ultrasonic ice-water bath, and finally obtain black phosphorus nanosheets after precipitation and drying;

[0053] Step S3: Add the black phosphorus nanosheets prepared in Step S2 into the graphene oxide nano-dispersion. The mass ratio of the graphene oxide nano-dispersion to the black phosphorus nanosheets is 1:2, and then perform ultrasonic water bath for about 10 min until a brown solution is formed and then stop;

[0054] Step S4: Let the brown solution prepared in Step S3 stand for 4 h, filter the solution, and vacuum-dry the obtained solid at 50 °C for 12 h;

[0055] Step S5: Take out the solid dried in Step S4, add HI solution at room temperature, perform chemical reduction reaction for 5 h to obtain a reactant, wash the reactant with ethanol, and obtain a black phosphorus-graphene oxide solid;

[0056] Step S6: Dissolve the black phosphorus-graphene oxide solid prepared in Step S5 in water to prepare a black phosphorus-graphene oxide aqueous solution, and then immerse the inner conductor 1 in this aqueous solution for 1 h so that a black phosphorus-graphene oxide thin film layer is self-assembled on the surface of the inner conductor 1. The thickness of the black phosphorus-graphene oxide thin film is 1 μm;

[0057] Step S7: Sample and cut the black phosphorus-graphene oxide thin film conductor prepared in Step S6, perform physical characterization by scanning electron microscope, measure the film layer thickness, and if the thickness requirement is met, the subsequent processing operations of the insulating layer 3, the outer shield layer 4, the drainage wire 5, the pair shield layer 6 and the sheath layer 7 can be carried out.

[0058] In Step S3, the concentration of the graphene oxide nano-dispersion is 5 mg / mL; in the black phosphorus-graphene oxide aqueous solution in Step S6, the mass fraction of black phosphorus-graphene oxide is 0.5%.

[0059] In summary, the present invention is reasonably designed and has the following advantages:

[0060] (1) The inner shielding layer is a black phosphorus-graphene oxide film, which can ensure the transmission strength of the active cable during transmission, so as to transmit electromagnetic signals over a long distance and provide a good heat insulation environment. At the same time, it can effectively resist external high temperatures and has anti-bending ability;

[0061] (2) The pair shielding layer uses tinned copper mesh, which can prevent external electromagnetic wave interference;

[0062] (3) With the rise of current artificial intelligence and the continuous expansion of scenario applications, the present invention can meet the layout efficiency and functional requirements of corresponding devices, and has good economic benefits and social value.

[0063] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An active cable made of black phosphorus-graphene oxide, characterized in that: A plurality of battery cores are provided, each of which comprises a pair of parallel wire assemblies, an outer shielding layer (4) is provided on the outer side of the wire assembly, and a wire pair shielding layer (6) and a sheath layer (7) are sequentially sheathed on the outer side of the outer shielding layer (4); The conductor assembly comprises an inner conductor (1) and an inner shielding layer (2) which are coaxially arranged, and the inner shielding layer (2) is wrapped around the outer side of the inner conductor (1); The inner surface of the outer shielding layer (4) and the outer surface of the inner shielding layer (2) form a cavity, and the cavity is filled with an insulating layer (3); The inner shielding layer (2) is a black phosphorus-graphene oxide film inner shielding layer.

2. An active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: It also includes a drain wire (5), which is made of tinned copper wire. The drain wire (5) is inserted into the outer shielding layer (4) and is located in the center of a pair of wire assemblies.

3. The active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: The inner conductor (1) is a copper wire with a diameter of 0.506 mm to 0.510 mm.

4. The active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: The insulating layer (3) is made of polyvinyl chloride material, and the thickness of the insulating layer (3) is 0.30 mm to 0.35 mm.

5. The active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: The outer shielding layer (4) is made of copper material, and the thickness of the outer shielding layer (4) is 0.10 mm to 0.30 mm.

6. The active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: The wire pair shielding layer (6) is made of tinned copper mesh, the outer diameter of the mesh wire of the tinned copper mesh is in the range of 0.10 mm to 0.20 mm, and the weaving density of the tinned copper mesh should not be less than 85%.

7. The active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: The sheath layer (7) is made of polyperfluoroethylene propylene copolymer, and the thickness of the sheath layer (7) is 0.33 mm to 0.68 mm.

8. The active cable made of black phosphorus-graphene oxide according to claim 1, characterized in that: The black phosphorus-graphene oxide film inner shielding layer comprises the following preparation method: Step S1, cleaning and polishing the inner conductor (1) using deionized water; Step S2, adding black phosphorus powder to an N-methylpyrrolidone aqueous solution, then performing an ultrasonic ice-water bath, and finally precipitating and drying to obtain black phosphorus nanosheets; Step S3, adding the black phosphorus nanosheets prepared in step S2 to the graphene oxide nanodispersion, wherein the mass ratio of the graphene oxide nanodispersion to the black phosphorus nanosheets is 1:2, and then placing in an ultrasonic water bath for about 10 minutes until a brown solution is formed; Step S4, allowing the brown solution obtained in step S3 to stand for 4 hours, filtering the solution, and vacuum drying the obtained solid at 50° C. for 12 hours; Step S5, taking out the solid dried in step S4, adding HI solution at room temperature, performing chemical reduction reaction for 5 hours to obtain a reactant, washing the reactant with ethanol, and obtaining a black phosphorus-graphene oxide solid; Step S6, dissolving the black phosphorus-graphene oxide solid obtained in step S5 in water to obtain a black phosphorus-graphene oxide aqueous solution, and then immersing the inner conductor (1) in the aqueous solution for 1 hour, so that the surface of the inner conductor (1) self-assembles to form a black phosphorus-graphene oxide thin film layer, and the thickness of the black phosphorus-graphene oxide thin film is 1 um; Step S7, sampling and cutting the black phosphorus-graphene oxide thin film conductor obtained in step S6, performing physical characterization by scanning electron microscopy, and measuring the film thickness. If the thickness requirement is met, subsequent processing operations of the insulating layer (3), the outer shielding layer (4), the drain wire (5), the line pair shielding layer (6) and the sheath layer (7) can be carried out.

9. The active cable made of black phosphorus-graphene oxide according to claim 8, characterized in that: In step S3, the concentration of the graphene oxide nano-dispersion liquid is 5 mg / mL.

10. The active cable made of black phosphorus-graphene oxide according to claim 8, characterized in that: In the black phosphorus-graphene oxide aqueous solution in step S6, the mass fraction of black phosphorus-graphene oxide is 0.5%.

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