CN121306640B - A high-flexibility, high-temperature resistant, lightweight composite shielded special cable and its preparation method - Google Patents

A high-flexibility, high-temperature resistant, lightweight composite shielded special cable and its preparation method

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Publication number
CN121306640B
CN121306640B CN202511871559.6A CN202511871559A CN121306640B CN 121306640 B CN121306640 B CN 121306640B CN 202511871559 A CN202511871559 A CN 202511871559A CN 121306640 B CN121306640 B CN 121306640B
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Prior art keywords
layer
composite material
parts
conductor core
heat dissipation
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CN121306640A (en
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刘倩倩
田崇军
刘宇
王成
李林森
王楠
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Far East Cable Co Ltd
New Far East Cable Co Ltd
Far East Composite Technology Co Ltd
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Far East Cable Co Ltd
New Far East Cable Co Ltd
Far East Composite Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
    • H01B3/306—Polyimides or polyesterimides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1865—Sheaths comprising braided non-metallic layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/2806—Protection against damage caused by corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/428—Heat conduction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

The invention discloses a high-flexibility high-temperature-resistant lightweight composite shielding special cable and a preparation method thereof. The cable comprises a conductor core, an insulating layer, an elastic buffer interlayer, a shielding layer, a heat dissipation layer, a filling layer, a cable-forming wrapping belt, a metal shielding layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside. The conductor core adopts a double-stage 1+6 normal stranding unit structure and a variable pitch gradient stranding design, the aramid fiber tensile core is integrated in the center, the ultra-fine plating copper wires and the elastic buffer interlayer are combined, the flexibility, the tensile strength and the high-frequency transmission performance are remarkably improved, the insulating layer, the shielding layer, the heat dissipation layer and the outer sheath are all made of special composite materials, and the cable is endowed with excellent high-temperature resistance, corrosion resistance, light weight and electromagnetic shielding performance.

Description

High-flexibility high-temperature-resistant lightweight composite shielding special cable and preparation method thereof
Technical Field
The invention relates to the technical field of special cables, in particular to a high-flexibility high-temperature-resistant lightweight composite shielding special cable and a preparation method thereof.
Background
With the rapid development of the fields of aerospace, robots, high-end equipment manufacturing, mobile communication and the like, the performance requirements on special cables are increasingly improved. The conventional cable has the common problems of insufficient flexibility, easy loosening of conductors after repeated bending, unstable signal transmission, large weight, unfavorable light weight and portability of equipment, limited shielding efficiency, difficult stable transmission in a complex electromagnetic environment, insufficient high temperature resistance and corrosion resistance, and limited application under severe working conditions.
In the prior art, although some improved designs, such as multi-layer shielding, reinforced armor and the like, are adopted, the cooperative optimization of flexibility, light weight, high temperature resistance and shielding performance is not realized on the structural design and a material system.
Disclosure of Invention
The technical problem to be solved by the invention is that the cable on the market at present still does not realize the cooperative optimization of flexibility, light weight, high temperature resistance and shielding performance on structural design and material system.
The technical scheme adopted for solving the technical problems is that the high-flexibility high-temperature-resistant lightweight composite shielding special cable comprises a conductor core, an insulating layer, an elastic buffer interlayer, a shielding layer, a heat dissipation layer, a filling layer, a cable wrapping belt, a metal shielding layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside;
The conductor core adopts a double-stage 1+6 normal twisting unit structure and comprises a plurality of basic twisting units, each basic twisting unit is formed by 1 central monofilament and 6 peripheral monofilaments according to a 1+6 normal twisting mode, and 7 basic twisting units are twisted into the conductor core according to a 1+6 normal twisting mode;
The center of the conductor core is provided with an aramid fiber tensile core;
The conductor core adopts a variable pitch gradient stranding structure, and adjacent layers are stranded oppositely;
The elastic buffer interlayer is positioned outside the insulating layer, is made of modified polyolefin elastomer and is spirally wound along the length direction of the conductor;
The conductor core is made of superfine oxygen-free copper wires with the diameter not larger than 0.05mm, silver or tin is plated on the surface of the conductor core, the diameter of the aramid fiber tensile core is 1/5-1/4 of the diameter of the conductor core, the inner layer twisting pitch of the variable pitch gradient twisting structure is 8-10 times of the diameter of the conductor unit, the outer layer twisting pitch is 12-15 times of the diameter of the conductor core, and the thickness of the elastic buffer interlayer is 0.1-0.3mm.
The insulation layer is made of polyimide composite material with the thickness of 0.1-0.8mm, the shielding layer comprises a metal foil layer and a nonmetallic conductive graphene composite material layer, the heat dissipation layer is made of graphene composite material, and the outer sheath layer is made of polyurethane composite material.
The polyimide composite material comprises, by weight, 70-80 parts of polyimide, 5-10 parts of a polyamide elastomer, 5-10 parts of fumed silica, 5-10 parts of nanoclay and 3-5 parts of boron nitride, wherein the conductive graphene composite material layer comprises, by weight, 40-50 parts of EVA copolymer, 40-45 parts of conductive carbon black and 0.5-1.5 parts of modified graphene master batch, the graphene composite material of the heat dissipation layer comprises, by weight, 60-70 parts of modified graphene dispersion liquid and 25-35 parts of aqueous epoxy resin emulsion, and the polyurethane composite material comprises, by weight, 70-80 parts of polyester thermoplastic polyurethane and 15-25 parts of phosphorus nitrogen flame retardant.
The armor layer is an aramid fiber weaving layer.
The filling layer is internally provided with an internal reinforcing support frame, and an internal pressure sensor module is arranged in the internal reinforcing support frame.
A method of making the specialty cable comprising the steps of:
preparing a conductor core, namely adopting superfine oxygen-free copper wires, twisting according to a double-stage 1+6 twisting structure after annealing and plating, embedding an aramid fiber tensile core in the center, and twisting by adopting a variable pitch gradient;
Coating an insulating layer, namely extruding and coating the polyimide composite material outside the conductor core;
an elastic buffer interlayer is arranged, namely a modified polyolefin elastomer is spirally wound outside an insulating layer;
the composite shielding layer and the heat dissipation layer are sequentially provided with a metal foil layer, a conductive graphene composite material layer and a graphene heat dissipation layer;
Cabling, namely wrapping by adopting a filling rope and a wrapping belt;
Arranging a metal shielding layer and an armor layer, namely braiding aramid fiber wire armor after coating the metal foil;
and extruding and wrapping the outer sheath layer, namely extruding and wrapping the polyurethane composite material on the outermost layer.
The conductive graphene composite material layer and the graphene heat dissipation layer are compounded through a coextrusion or coating process.
The beneficial effects of the invention are as follows:
(1) According to the high-flexibility high-temperature-resistant lightweight composite shielding special cable and the preparation method, the design of the conductor layer and the insulating layer is optimized, so that the conductivity and the signal transmission speed of the cable are remarkably improved;
(2) The multi-layer composite shielding layer design can effectively resist the interference in the complex electromagnetic environment, and is suitable for the fields of aerospace, communication and the like;
(3) The cable has the advantages that the cable adopts the insulating material and the outer sheath material which are high-temperature resistant and corrosion resistant, prolongs the service life of the cable, and is suitable for application in severe environments;
(4) By introducing the high-heat-conductivity and light-weight material, the overall weight of the cable is reduced, and the bending performance of the cable is improved, so that the cable is suitable for portable equipment and high-flexibility requirement scenes;
(5) Armor, heat dissipation layer, waterproof layer, inside reinforcing support frame can be added according to different application scenario selectivity, diversified demand is satisfied.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic cross-sectional view of a cable according to the present invention.
Fig. 2 is a schematic diagram of a cable preparation process according to the present invention.
In the figure, a conductor core, an insulating layer, an elastic buffer interlayer, a shielding layer, a heat dissipation layer, a filling layer, a cabling tape, a metal shielding layer, an armor layer, an outer sheath layer, an inner reinforcing support frame and an inner pressure sensor module are shown as 1, 2, an insulating layer, 3, an elastic buffer interlayer, 4, a shielding layer, 5, a heat dissipation layer, 6, a filling layer, 7, a cabling tape, 8, a metal shielding layer, 9, an armor layer, 10, an outer sheath layer, 11 and 12.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected" and "connected" are to be construed broadly, and for example, they may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The high-flexibility high-temperature-resistant lightweight composite shielding special cable shown in fig. 1 comprises a conductor core 1, an insulating layer 2, an elastic buffer interlayer 3, a shielding layer 4, a heat dissipation layer 5, a filling layer 6, a cabling tape 7, a metal shielding layer 8, an armor layer 9 and an outer sheath layer 10 which are sequentially arranged from inside to outside;
the conductor core 1 adopts a double-stage 1+6 normal twisting unit structure and comprises a plurality of basic twisting units, each basic twisting unit is formed by 1 central monofilament and 6 peripheral monofilaments according to a 1+6 normal twisting mode, and 7 basic twisting units are twisted into the conductor core 1 according to a 1+6 normal twisting mode;
The center of the conductor core 1 is provided with an aramid fiber tensile core;
The conductor core 1 adopts a variable pitch gradient stranding structure, and adjacent layers are stranded oppositely;
The elastic buffer 3 is located outside the insulating layer 2, made of a modified polyolefin elastomer, and is spirally wound along the length direction of the conductor.
The conductor core 1 is made of superfine oxygen-free copper wires with the diameter not larger than 0.05mm, silver or tin is plated on the surface of the superfine oxygen-free copper wires, the diameter of the aramid fiber tensile core is 1/5-1/4 of the diameter of the conductor core 1, the inner layer twisting pitch of the variable pitch gradient twisting structure is 8-10 times of the diameter of the conductor unit, the outer layer twisting pitch is 12-15 times of the diameter of the conductor core 1, and the thickness of the elastic buffer interlayer 3 is 0.1-0.3mm.
The insulation layer 2 is made of polyimide composite material with the thickness of 0.1-0.8mm, the shielding layer 4 comprises a metal foil layer and a nonmetallic conductive graphene composite material layer, the heat dissipation layer 5 is made of graphene composite material, and the outer sheath layer 10 is made of polyurethane composite material.
The polyimide composite material comprises, by weight, 70-80 parts of polyimide, 5-10 parts of polyamide elastomer, 5-10 parts of fumed silica, 5-10 parts of nanoclay and 3-5 parts of boron nitride, wherein the conductive graphene composite material layer comprises, by weight, 40-50 parts of EVA copolymer, 40-45 parts of conductive carbon black and 0.5-1.5 parts of modified graphene master batch, the graphene composite material of the heat dissipation layer comprises, by weight, 60-70 parts of modified graphene dispersion liquid and 25-35 parts of aqueous epoxy resin emulsion, and the polyurethane composite material comprises, by weight, 70-80 parts of polyester thermoplastic polyurethane and 15-25 parts of phosphorus nitrogen flame retardant.
The armor layer 9 is an aramid yarn braiding layer.
The filling layer 6 is internally provided with an internal reinforcing support frame 11, and the internal reinforcing support frame 11 is internally provided with an internal pressure sensor module 12.
The method for preparing the special cable comprises the following steps:
Preparing a conductor core 1, namely adopting superfine oxygen-free copper wires, twisting according to a double-stage 1+6 twisting structure after annealing and plating, embedding an aramid fiber tensile core in the center, and twisting by adopting a variable pitch gradient;
coating an insulating layer 2, namely extruding and coating the polyimide composite material outside the conductor core 1;
An elastic buffer interlayer 3 is arranged, wherein a modified polyolefin elastomer is spirally wound outside the insulating layer 2;
The composite shielding layer 4 and the heat dissipation layer 5 are sequentially provided with a metal foil layer, a conductive graphene composite material layer and a graphene heat dissipation layer;
Cabling, namely wrapping by adopting a filling rope and a wrapping belt;
The metal shielding layer 8 and the armor layer 9 are arranged, wherein aramid fiber wire armor is woven after metal foil is coated;
and extruding and wrapping the outer sheath layer 10, namely extruding and wrapping the polyurethane composite material on the outermost layer.
The conductive graphene composite material layer and the graphene heat dissipation layer are compounded through a coextrusion or coating process.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims (5)

1.一种高柔韧性耐高温轻量化复合屏蔽特种电缆，其特征在于，包括由内至外依次设置的导体芯(1)、绝缘层(2)、弹性缓冲夹层(3)、屏蔽层(4)、散热层(5)、填充层(6)、成缆包带(7)、金属屏蔽层(8)、铠装层(9)和外护套层(10)；1. A high-flexibility, high-temperature resistant, lightweight composite shielded special cable, characterized in that it comprises, from the inside out, a conductor core (1), an insulation layer (2), an elastic buffer interlayer (3), a shielding layer (4), a heat dissipation layer (5), a filling layer (6), a cabling wrapping tape (7), a metal shielding layer (8), an armor layer (9), and an outer sheath layer (10); 所述导体芯(1)采用双级1+6正规绞合单元结构，包括多个基础绞合单元，每个基础绞合单元由1根中心单丝与6根外围单丝按1+6正规绞合方式构成，7个所述基础绞合单元再按1+6正规绞合方式绞合成导体芯(1)；The conductor core (1) adopts a double-stage 1+6 regular twisted unit structure, including multiple basic twisted units. Each basic twisted unit is composed of 1 central single wire and 6 peripheral single wires twisted in a 1+6 regular twisting manner. The 7 basic twisted units are then twisted together in a 1+6 regular twisting manner to form the conductor core (1). 所述导体芯(1)中心设有芳纶纤维抗拉芯；The conductor core (1) is provided with an aramid fiber tensile core at its center; 所述导体芯(1)采用变节距梯度绞合结构，且相邻层级绞向相反；The conductor core (1) adopts a variable pitch gradient stranding structure, and the stranding directions of adjacent layers are opposite; 所述弹性缓冲夹层(3)位于绝缘层(2)之外，由改性聚烯烃弹性体制成，沿导体长度方向螺旋缠绕；The elastic buffer interlayer (3) is located outside the insulating layer (2), and is made of modified polyolefin elastomer, spirally wound along the conductor length direction; 所述导体芯(1)采用直径不大于0.05mm的超细无氧铜丝，表面镀覆银或锡；所述芳纶纤维抗拉芯的直径为导体芯(1)直径的1/5-1/4；所述变节距梯度绞合结构的内层绞合节距为导体单元直径的8-10倍，外层绞合节距为导体芯(1)直径的12-15倍；所述弹性缓冲夹层(3)的厚度为0.1-0.3mm；The conductor core (1) is made of ultra-fine oxygen-free copper wire with a diameter of no more than 0.05 mm, and the surface is plated with silver or tin; the diameter of the aramid fiber tensile core is 1/5 to 1/4 of the diameter of the conductor core (1); the inner layer stranding pitch of the variable pitch gradient stranding structure is 8 to 10 times the diameter of the conductor unit, and the outer layer stranding pitch is 12 to 15 times the diameter of the conductor core (1); the thickness of the elastic buffer interlayer (3) is 0.1 to 0.3 mm. 所述绝缘层(2)为聚酰亚胺复合材料，厚度为0.1-0.8mm；所述屏蔽层(4)包括金属箔层和非金属的导电石墨烯复合材料层；所述散热层(5)为石墨烯复合材料；所述外护套层(10)为聚氨酯复合材料；The insulating layer (2) is a polyimide composite material with a thickness of 0.1-0.8 mm; the shielding layer (4) includes a metal foil layer and a non-metallic conductive graphene composite material layer; the heat dissipation layer (5) is a graphene composite material; and the outer sheath layer (10) is a polyurethane composite material. 所述聚酰亚胺复合材料按重量份包括：聚酰亚胺70-80份、聚酰胺弹性体5-10份、气相二氧化硅5-10份、纳米粘土5-10份、氮化硼3-5份；所述导电石墨烯复合材料层按重量份包括：EVA共聚物40-50份、导电炭黑40-45份、改性石墨烯母料0.5-1.5份；所述散热层的石墨烯复合材料按重量份包括：改性石墨烯分散液60-70份、水性环氧树脂乳液25-35份；所述聚氨酯复合材料按重量份包括：聚酯型热塑性聚氨酯70-80份、磷氮阻燃剂15-25份。The polyimide composite material comprises, by weight: 70-80 parts polyimide, 5-10 parts polyamide elastomer, 5-10 parts fumed silica, 5-10 parts nano-clay, and 3-5 parts boron nitride; the conductive graphene composite material layer comprises, by weight: 40-50 parts EVA copolymer, 40-45 parts conductive carbon black, and 0.5-1.5 parts modified graphene masterbatch; the graphene composite material of the heat dissipation layer comprises, by weight: 60-70 parts modified graphene dispersion and 25-35 parts waterborne epoxy resin emulsion; the polyurethane composite material comprises, by weight: 70-80 parts polyester thermoplastic polyurethane and 15-25 parts phosphorus-nitrogen flame retardant. 2.根据权利要求1所述的一种高柔韧性耐高温轻量化复合屏蔽特种电缆，其特征在于，所述铠装层(9)为芳纶丝编织层。2. The high-flexibility, high-temperature resistant, lightweight composite shielded special cable according to claim 1, characterized in that the armor layer (9) is an aramid fiber braided layer. 3.根据权利要求1所述的一种高柔韧性耐高温轻量化复合屏蔽特种电缆，其特征在于，所述填充层(6)内部设置有内部加强支架框(11)，所述内部加强支架框(11)内部安装有内部压力传感器模块(12)。3. The high-flexibility, high-temperature resistant, lightweight composite shielded special cable according to claim 1, characterized in that an internal reinforcing bracket frame (11) is provided inside the filling layer (6), and an internal pressure sensor module (12) is installed inside the internal reinforcing bracket frame (11). 4.一种制备如权利要求1-3任一项所述特种电缆的方法，其特征在于，包括以下步骤：4. A method for preparing a special cable as described in any one of claims 1-3, characterized in that it comprises the following steps: 制备导体芯(1)：采用超细无氧铜丝，经退火、镀覆后，按双级1+6绞合结构绞合并中心嵌入芳纶抗拉芯，且采用变节距梯度绞合；Preparation of conductor core (1): Ultra-fine oxygen-free copper wire is used. After annealing and plating, it is stranded in a double-stage 1+6 stranded structure and an aramid tensile core is embedded in the center. Variable pitch gradient stranding is also used. 包覆绝缘层(2)：将聚酰亚胺复合材料挤出包覆在导体芯(1)外；Insulating layer (2): Polyimide composite material is extruded and coated on the conductor core (1); 设置弹性缓冲夹层(3)：将改性聚烯烃弹性体螺旋缠绕在绝缘层(2)外；Set up an elastic buffer interlayer (3): the modified polyolefin elastomer is spirally wound around the outside of the insulating layer (2); 复合屏蔽层(4)与散热层(5)：依次设置金属箔层、导电石墨烯复合材料层以及石墨烯散热层；Composite shielding layer (4) and heat dissipation layer (5): A metal foil layer, a conductive graphene composite material layer and a graphene heat dissipation layer are sequentially arranged; 成缆：采用填充绳与包带进行绕包；Cable assembly: using filler ropes and strapping for wrapping; 设置金属屏蔽层(8)与铠装层(9)：包覆金属箔后编织芳纶丝铠装；Set a metal shielding layer (8) and an armor layer (9): After covering with metal foil, weave aramid yarn armor; 挤包外护套层(10)：将聚氨酯复合材料挤出包覆在最外层。Extruded outer sheath layer (10): The polyurethane composite material is extruded and coated on the outermost layer. 5.根据权利要求4所述的方法，其特征在于，所述导电石墨烯复合材料层和所述石墨烯散热层通过共挤或涂覆工艺复合。5. The method according to claim 4, wherein the conductive graphene composite material layer and the graphene heat dissipation layer are composited by co-extrusion or coating processes.
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CN108831600A (en) * 2018-06-21 2018-11-16 安徽意力电缆有限公司 A kind of environmental protection oilproof flame retardant rail transit locomotive cable
CN210295948U (en) * 2019-08-01 2020-04-10 无锡市驰利电缆科技有限公司 High temperature resistant fireproof cable

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