CN109524147A - The preparation method of high-conductivity composite material based on graphene - Google Patents
The preparation method of high-conductivity composite material based on graphene Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0084—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
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- 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
Abstract
The invention belongs to field of material technology, it is related to the high-heat-conductive composite material preparation method based on graphene.Method includes the following steps: (1) is by graphene, carbon black and metal mixed melting；(2) the graphene alloy melt that melting mixes is through flux control, and internal graphene oriented alignment, during flux control, melt is cooling to wrap up wire, and magnetic direction is axially parallel with wire；(3) wire for wrapping up graphene alloy is pulled out by drawing die, the high-conductivity composite material is made.The present invention adds two-dimensional graphene in composite material preparatory phase thereto, and makes its oriented alignment in the axial direction under directional magnetic field effect, using the characteristics of ultra-high conductivity, greatly improving its conductivity in graphene face.
Description
Technical field
The invention belongs to field of material technology, are related to oriented graphite alkene material, and in particular to based on the highly conductive of graphene
The preparation method of composite material.
Background technique
Aluminium element rich reserves on earth, electric conductivity is good (aluminium alloy resistivity be about copper 1.68 times), price
Also more cheap, therefore huge applications and development have been obtained in electrician trade.Early 20th century, aluminium alloy conductor are initially applied to
Ultra-high-tension power transmission line is developed by leaps and bounds in worldwide later.At present in high pressure, super-pressure and extra-high voltage overhead power transmission
Be most widely used in route and it is mature be common steel-cored aluminium strand, conductivity is generally 61%IACS, but with
The fast development of China's economy, electricity needs rise year by year, how to improve power transmission efficiency, reduce the problems such as line loss to electric power
Construction department and research worker propose challenge.Transmission line loss mainly includes two aspect of resistance loss and corona loss,
In the case where the latter is essentially identical, transmission line loss is mainly determined by the former, and improving conductivity is to reduce transmission losses
A kind of effective ways, therefore high conductivity aluminium conductor material comes into being, method one of the forefathers to the electric conductivity for improving conducting wire
As by optimized alloy element proportion, improve the methods of heat treatment process or composite inoculating, these methods can only promote by a small margin
Its electric conductivity, room for promotion are limited.
Chinese patent CN201711259430.9 discloses a kind of preparation method using directional solidification technique, prepares graphite
Alkene/metallic composite, the continuous cylindrical crystalline texture that directional solidification generates have anisotropy enough, can effectively improve the electricity of material
Conductance, and this method is easy to combine with continuously casting.
Summary of the invention
It is an object of the invention to overcome drawbacks described above of the existing technology, a kind of high-conductivity composite material is proposed
Preparation method can be improved power transmission efficiency using material prepared by this method, reduce line loss, to power transmission, energy-saving and emission-reduction
It is significant.
The present invention, which is that the following technical solution is employed, to be realized:
A kind of preparation method of the high-conductivity composite material based on graphene, comprising the following steps:
(1) graphene, carbon black and metal are weighed by mass percentage, and constant-temperature vacuum melting mixes graphene and metal；
(2) for the graphene alloy melt for mixing melting made from step (1) through flux control, melt inside graphene is fixed
To arrangement, during flux control, by the cooling cladding wire of melt, magnetic direction is axially parallel with wire；
(3) wire for wrapping up graphene alloy is pulled out by drawing die, the high-conductivity composite material is made.
The metal includes tin, chromium, cobalt, platinum, tungsten, zirconium and aluminium.
The mass percent of graphene, carbon black and metal is in the step (1), graphene be 1.0wt%~
5.0wt%, carbon black are 0.9wt%~1.5wt%, and tin is 1.3wt%~2.2wt%, chromium is 0.7wt%~1.6wt%, cobalt is
0.5wt%~3.5wt%, platinum are 0.2wt%~0.6wt%, tungsten is 0.8wt%~1.8wt%, zirconium be 0.5wt%~
0.9wt%, surplus are aluminium, and the sum of above constituent mass percentage is 100%.
Constant-temperature vacuum fusion process in the step (1), thermostat temperature be 790~850 DEG C, vacuum degree be 0.1~
1.0Pa, 3~6h of smelting time, cooling temperature is 430~470 DEG C in step (2).
Magnetic field strength is 0.5~5T in the step (2).
Specifically, accessory processing device, high melt under vacuum condition is added in graphene, carbon black and metal, stirring is mixed
After even, discharge pipe to graphene aluminium alloy melt carry out cooling down, be wrapped in wire surface, in cooling procedure by
Directional magnetic field is adjusted, and the wire for wrapping up cooling melt is pulled out by drawing die, the high-conductivity composite material is made.
The accessory processing device includes mixing unit, discharging portion, parcel and extension section；
The mixing unit includes high temperature melting furnace, and high temperature melting furnace is connected to vacuum pump；High melt furnace interior is equipped with molten
Crucible is refined, melting kettle periphery is equipped with heater, and inside is inserted with blender；Blender is connect by transmission shaft with stirring motor,
Stirring motor is located at high temperature melting furnace top center；
The discharging portion is located at below mixing unit, including discharge pipe, valve and insulating layer, discharge pipe are bending tube
Road, one end are vertical pipe, and one end is horizontal pipe；The vertical pipe end of discharge pipe is connected to melting kettle bottom, connection
Place is provided with valve；The horizontal pipe end of discharge pipe is connected to the tube fit of parcel；Discharge pipe periphery is enclosed with guarantor
Warm layer；
The parcel includes the pipeline that one end is connected to discharge pipe, the drawing die company of the pipeline other end and extension section
It is logical, induction coil is wound on the outside of pipeline；The junction of pipeline and discharge pipe is provided with wire import, wire import and drawing
The outer wall for stretching the pipeline between mold is closely fitted with cyclic annular water cooling tube, and cyclic annular water cooling tube is between induction coil and pipeline；
Stainless steel pulley is equipped with inside the pipeline of wire entrance, stainless steel pulley and cyclic annular water cooling tube are located at wire import
Ipsilateral, the upper limb of stainless steel peripheral pulley and pipeline central axes are tangent；
The extension section includes that drawing die and conductor wire stretch dish axle, and the material duct of drawing die coaxially connects with pipeline
It connects.
The induction coil is hollow tubular, and internal diameter 50mm, inside is connected with cooling water；Induction coil centre and drawing
It stretches and wraps up cyclic annular water cooling tube on the outside of the pipeline between mold.
The material duct outlet diameter of the wire import and drawing die is all larger than the diameter of wire.
The wire is stainless steel wire, and diameter is 2.8~7.8mm of φ.
The present invention proposes a kind of high conductivity material and preparation method, and two-dimensional graphene is added during preparing conducting wire
Material, and apply high-strength directional distribution magnetic field, using the diamagnetism of two-dimensional graphene make its in conducting wire in the axial direction
It aligns, using graphene, there are dirac points, so that electronics can be not complete by phonon collision in graphene in-plane moving
Full tunnelling, to realize that hole and electronics in graphene can possess very long free path, this makes electron motion by temperature
The influence of degree is very small, so that the high conductivity of real material, the aluminium alloy of high conductivity is coated in a manner of metallurgical bonding
Stainless steel wire surrounding can effectively improve the intensity of composite guide electric wire.
Compared with prior art, the beneficial effect that the present invention obtains is:
(1) other high conductive materials are different from alloying element proportion optimizing, improvement heat treatment process and composite inoculating etc.
Method, the present invention adds two-dimensional graphene in conducting wire preparatory phase thereto, and makes it along axis side under directional magnetic field effect
To oriented alignment, using the characteristics of ultra-high conductivity, greatly improving its conductivity in graphene face；
(2) wire center part prepared by the present invention is stainless steel material, and outer layer is graphene aluminium alloy, high according to exchange
It presses in electricity transmission process, electric current has " skin effect ", so electric current will all concentrate on aluminium alloy in electric energy transmission process
Middle transmission, aluminium alloy have high electric conductivity because the graphene of oriented alignment is distributed with, and twist relative to traditional steel-core-aluminium
Line, electric conductivity are higher；
(3) because compound wire center prepared by the present invention is stainless steel wire, relative to traditional steel-cored aluminium strand, intensity
It is higher.
Detailed description of the invention
Fig. 1 is the accessory processing device use state diagram in a better embodiment of the invention；
Fig. 2 is the accessory processing device partial enlarged view in a better embodiment of the invention；
It is respectively marked in figure as follows: 1 high temperature melting furnace, 2 vacuum pumps, 3 stirring motors, 4 transmission shafts, 5 blenders, 6 melting earthenwares
Crucible, 7 heaters, 8 graphene aluminium alloy melts, 9 valves, 10 insulating layers, 11 induction coils, 12 cyclic annular water cooling tubes, 13 stretching dies
Tool, 14 high-conductivity composite materials, 15 conductor wires stretch dish axle, 16 stainless steel wires, 17 discharge pipes, 18 pulleys, 19 pipelines, 20 gold medals
Belong to silk import.
Specific embodiment
Method of the invention is illustrated below by specific embodiment, but the present invention is not limited thereto.
Experimental method described in following embodiments is unless otherwise specified conventional method；The reagent and material,
Using analytical reagents, unless otherwise specified, commercially obtain.
Traditional steel-cored aluminium strand is 4.5~φ of φ 9.6 (mm), pacifies live wire Cable Co., Ltd, model purchased from Hebei
LGJ-10/2, LGJ-16/3, LGJ-25/4, LGJ-35/6, LGJ-50/8, conductivity 60.8%IACS, 61.5%IACS,
61.6%IACS.
Embodiment 1
Accessory processing device includes mixing unit, discharging portion, parcel and extension section；
Mixing unit includes high temperature melting furnace 1, and high temperature melting furnace 1 is connected to vacuum pump 2；It is equipped with inside high temperature melting furnace 1 molten
Crucible 6 is refined, 6 periphery of melting kettle is equipped with heater 7, and inside is inserted with blender 5；Blender 5 passes through transmission shaft 4 and stirring motor
3 connections, stirring motor 3 are located at 1 top center of high temperature melting furnace；
Discharging portion is located at below mixing unit, including discharge pipe 17, valve 9 and insulating layer 10, and discharge pipe 17 is bending
Pipeline, one end are vertical pipe, and one end is horizontal pipe；The vertical pipe end of discharge pipe 10 is connected to 6 bottom of melting kettle,
Junction is provided with valve 9；The horizontal pipe end of discharge pipe 17 is connected to the cooperation of the pipeline 19 of parcel；Outside discharge pipe 17
It is enclosed with insulating layer 10 week
Parcel includes the pipeline 19 that one end is connected to discharge pipe 17, the drawing die of pipeline 19 other end and extension section
13 are connected to, and are wound with induction coil 11 on the outside of pipeline 19；The junction of pipeline 29 and discharge pipe 27 is provided with wire import 20,
The outer wall of pipeline 29 between wire import 20 and drawing die 13 is closely fitted with cyclic annular water cooling tube 12, cyclic annular water cooling tube 12
Between induction coil 11 and pipeline 19；Stainless steel pulley 18 is equipped with inside pipeline 19 at wire import 20, it is stainless
Steel pulley 18 and cyclic annular water cooling tube 12 are located at the ipsilateral of wire import 20, the upper limb of 18 periphery of stainless steel pulley in pipeline 19
Axis is tangent；
Extension section includes drawing die 13 and conductor wire stretches dish axle 15, and the material duct of drawing die 13 and pipeline 19 are same
Axis connection.
(1) taking Sn by weight percentage is 1.3wt%, Cr 1.6wt%, Co 0.5wt%, Pt 0.6wt%, W are
1.8wt%, C 1.5wt%, graphene 2.5wt%, Zr 0.9wt%, surplus Al, above-mentioned each ingredient is put into
In the melting kettle 6 of the high temperature melting furnace 1 of accessory processing device, start vacuum pump 2 to vacuumizing in high temperature melting furnace 1, when it
When vacuum degree 0.5Pa, being increased temperature in high temperature melting furnace 1 by heater 7 is 800 DEG C, opens stirring motor 3, passes through biography
Moving axis 4 drives blender 5 to be stirred graphene aluminium alloy melt 8, temperature-resistant melting 4h is kept, in melting kettle 6
Graphene aluminium alloy melt 8 carry out vacuum melting；
(2) it opens valve 9 to release the graphene aluminium alloy melt 8 stirred evenly along discharge pipe 17, discharge pipe 17
Outside is kept the temperature using insulating layer 10, is solidified in pipeline 17 to prevent the generation of graphene aluminium alloy melt 8, thermal insulation material is
Al2O3Ceramic blankets, insulating layer 10 with a thickness of 30~60mm；Induction coil 11, the material of induction coil 11 are furnished in 19 two sides of pipeline
Matter is fine copper, and shape is hollow tube dress, and the internal diameter of induction coil 11 is 50mm, is connected with cooling water inside induction coil 11, cooling
Water is used to export the heat generated due to Joule effect in time, and induction coil 11 is for generating the orientation magnetic along 19 direction of pipeline
, the size in magnetic field is 0.5T~5T.Cyclic annular water cooling tube 12, cyclic annular water cooling tube are arranged in lengthwise centers position in induction coil 11
12 inner walls are fitted closely with 19 outer wall of pipeline, for so that graphene aluminium alloy solution 8 solidifies；Against cyclic annular water cooling tube 12
Left side is drawing die 13, and drawing die 13 is used to make the graphene aluminium alloy section of solidification to reduce, length increases, intensity mentions
It is high.There is a stainless steel pulley 18 in pipeline 19, pulley 18 is for being driven stainless steel wire 16, the size φ of stainless steel wire 16
4.8mm, the position of stainless steel pulley 18 are aligned the axis of stainless steel wire 16 and the axis of drawing die 13, stainless steel
Silk 16 enters pipeline 19 by the wire import 20 opened up on the downside of pipeline 19, and 20 aperture of wire import is greater than stainless steel wire
16, φ 5mm, because the viscosity of aluminium is larger, which will not occur the leakage of aluminium alloy melt；
(3) it opens valve 9 to release the graphene aluminium alloy melt 8 stirred evenly along discharge pipe 17, when graphene aluminium
When alloy melt 8 flows through the region of line of induction coil 11, melting intracorporal two-dimensional graphene can be in horizontal row under magnetic fields
Cloth, when flowing through cyclic annular water cooling tube 12, temperature, which is down to, is reduced to 430~470 DEG C, solidifies in 16 surrounding of stainless steel wire,
8 plasticity of graphene aluminum alloy materials at this time is preferable, under the pulling that conductor wire stretches dish axle 15, coats the stainless steel of aluminium alloy
Silk 16, which passes through, improves the reduction of graphene aluminium alloy section, length increase, intensity of solidification having a size of φ 5mm drawing die 13,
And high-conductivity composite material 14 is obtained, steel core graphene aluminium alloy compound conducting wire.
By the conductivity test to the conducting wire, conductivity 80%IACS, much higher than traditional steel-cored aluminium strand
Its conductivity is improved 31.1% by conductivity 61%IACS.
Embodiment 2
It is 790 DEG C that high melt in-furnace temperature, which is increased, to take Sn by weight percentage be 1.3wt%, Cr 0.7wt%,
Co is 3.5wt%, Pt 0.2wt%, W 0.8wt%, C 0.9wt%, Zr 0.5wt%, graphene 1.0wt%, remaining
Amount is Al, above-mentioned each ingredient is put into high temperature melting furnace 1 melting kettle 6, starts vacuum pump 2 to high temperature melting furnace
Interior 1 vacuumizes, and as its vacuum degree 0.1Pa, being increased temperature in high temperature melting furnace 1 by heater 7 is 790 DEG C, to melting
Graphene aluminium alloy melt 8 in crucible 6 carries out constant-temperature vacuum melting 3h, and the work of device 5 is kept stirring in fusion process；It will stirring
Uniform alloy melt is the region of 0.5T~5T to the graphene oriented alignment inside alloy melt by the size in magnetic field；Its
Temperature, which is down to, is reduced to 430~470 DEG C, the aperture φ 3.0mm of wire import 20, use the stainless steel wire 16 of φ 2.8mm with
And the drawing die 14 of φ 3.0mm prepares the aluminium alloy conductors steel 14 that diameter is 3mm.
By the conductivity test to the conducting wire, conductivity 72%IACS, higher than leading for traditional steel-cored aluminium strand
Its conductivity is improved 18% by electric rate %61IACS.
Embodiment 3
Taking Sn by weight percentage is 1.3wt%, Cr 1.6wt%, Co 0.5wt%, Pt 0.2wt%, W are
0.8wt%, C 0.9wt%, Zr 0.5wt%, graphene 5.0wt%, surplus Al put into above-mentioned each ingredient
In high temperature melting furnace in 1 melting kettle 6, starting vacuum pump 2 is vacuumized in high temperature melting furnace 1, as its vacuum degree 1.0Pa
When, being increased temperature in high temperature melting furnace 1 by heater 7 is 850 DEG C, to the graphene aluminium alloy melt 8 in melting kettle 6
Constant-temperature vacuum melting 6h is carried out, the work of device 5 is kept stirring in fusion process；By the alloy melt stirred evenly by the big of magnetic field
To the graphene oriented alignment inside alloy melt, temperature, which is down to, is reduced to 430~470 DEG C in the small region for 0.5T~5T,
The aperture φ 8.0mm of wire import 20, and prepared directly using the stainless steel wire 1 of φ 7.8mm and the drawing die 13 of φ 8mm
Diameter is the aluminium alloy conductors steel 14 of 8mm.
By the conductivity test to the conducting wire, conductivity 89%IACS, much higher than traditional steel-cored aluminium strand
Its conductivity is improved 46% by conductivity 61%IACS.
The present invention has diamagnetism using graphene, and the characteristic that oriented alignment can be achieved is acted in directional magnetic field, is tied simultaneously
Graphene is closed there are dirac point, electronics has probability to pass through the potential field higher than self-energy under the influence of quantum tunneling effect,
So that electronics can not be collided and complete tunnelling in graphene in-plane moving by phonon, to realize the hole in graphene and electricity
Son can possess very long free path, and it is very small that this is influenced by temperature electron motion.
Certainly, above content is only presently preferred embodiments of the present invention, be should not be construed as limiting to implementation of the invention
Example range.The present invention is also not limited to the example above, and those skilled in the art are in essential scope of the invention
Interior made all the changes and improvements etc., should all belong in patent covering scope of the invention.
Claims (10)
1. a kind of preparation method of the high-conductivity composite material based on graphene, which comprises the following steps:
(1) graphene, carbon black and metal are weighed by mass percentage, and constant-temperature vacuum melting mixes graphene and metal；
(2) the graphene alloy melt for mixing melting made from step (1) is through flux control, melt inside graphene orientation row
Cloth, during flux control, by the cooling cladding wire of melt, magnetic direction is axially parallel with wire；
(3) wire for wrapping up graphene alloy is pulled out by drawing die, the high-conductivity composite material is made.
2. the preparation method of the high-conductivity composite material according to claim 1 based on graphene, which is characterized in that described
Metal includes tin, chromium, cobalt, platinum, tungsten, zirconium and aluminium.
3. the preparation method of the high-conductivity composite material according to claim 2 based on graphene, which is characterized in that described
The mass percent of graphene, carbon black and metal is in step (1), and graphene is 1.0wt%~5.0wt%, and carbon black is
0.9wt%~1.5wt%, tin is 1.3wt%~2.2wt%, chromium is 0.7wt%~1.6wt%, cobalt be 0.5wt%~
3.5wt%, platinum are 0.2wt%~0.6wt%, tungsten is 0.8wt%~1.8wt%, zirconium is 0.5wt%~0.9wt%, and surplus is
Aluminium, the sum of above constituent mass percentage are 100%.
4. the preparation method of the high-conductivity composite material according to claim 3 based on graphene, which is characterized in that described
Constant-temperature vacuum fusion process in step (1), thermostat temperature be 790~850 DEG C, vacuum degree be 0.1~1.0Pa, smelting time 3~
6h, cooling temperature is 430~470 DEG C in step (2).
5. the preparation method of the high-conductivity composite material according to claim 3 based on graphene, which is characterized in that described
Magnetic field strength is 0.5~5T in step (2).
6. the preparation method of the high-conductivity composite material according to claim 1-5 based on graphene, feature
It is, accessory processing device is added in graphene, carbon black and metal, high melt under vacuum condition after stirring and evenly mixing, is discharging
Pipeline carries out cooling down to graphene aluminium alloy melt, is wrapped in wire surface, in cooling procedure by directional magnetic field tune
The wire for wrapping up cooling melt is pulled out by drawing die, the high-conductivity composite material is made by section.
7. the preparation method of the high-conductivity composite material according to claim 6 based on graphene, which is characterized in that described
Accessory processing device includes mixing unit, discharging portion, parcel and extension section；
The mixing unit includes high temperature melting furnace (1), and high temperature melting furnace (1) is connected to vacuum pump (2)；In high temperature melting furnace (1)
Portion is equipped with melting kettle (6), and melting kettle (6) periphery is equipped with heater (7), and inside is inserted with blender (5)；Blender (5) is logical
It crosses transmission shaft (4) to connect with stirring motor (3), stirring motor (3) is located at high temperature melting furnace (1) top center；
The discharging portion is located at below mixing unit, including discharge pipe (17), valve (9) and insulating layer (10), discharge pipe
It (17) is bending pipeline, one end is vertical pipe, and one end is horizontal pipe；The vertical pipe end of discharge pipe (17) and melting earthenware
The connection of crucible (6) bottom, junction is provided with valve (9)；The horizontal pipe end of discharge pipe (17) and the pipeline (19) of parcel
Cooperation connection；Discharge pipe (17) periphery is enclosed with insulating layer (10)；
The parcel includes the pipeline (19) that one end is connected to discharge pipe (17), the drawing of pipeline (19) other end and extension section
Mold (13) connection is stretched, is wound with induction coil (11) on the outside of pipeline (19)；The junction of pipeline (19) and discharge pipe (17)
It is provided with wire import (20), the outer wall of the pipeline (19) between wire import (20) and drawing die (13) is closely fitted with
Cyclic annular water cooling tube (12), cyclic annular water cooling tube (12) are located between induction coil (11) and pipeline (19)；In wire import (20)
Be equipped with stainless steel pulley (18) inside the pipeline (19) at place, stainless steel pulley (18) and cyclic annular water cooling tube (12) be located at wire into
Mouthful (20) it is ipsilateral, the upper limb of stainless steel pulley (18) periphery and pipeline (19) central axes are tangent；
The extension section includes that drawing die (13) and conductor wire stretch dish axle (15), the material duct of drawing die (13) and pipe
Road (19) is coaxially connected.
8. the preparation method of the high-conductivity composite material according to claim 7 based on graphene, which is characterized in that described
Induction coil (11) is hollow tubular, and internal diameter 50mm, inside is connected with cooling water；Induction coil (11) centre and stretching die
Have and wraps up cyclic annular water cooling tube (12) on the outside of the pipeline (19) between (13).
9. the preparation method of the high-conductivity composite material according to claim 7 based on graphene, which is characterized in that described
The material duct outlet diameter of wire import (20) and drawing die (13) is all larger than the diameter of wire.
10. the preparation method of the high-conductivity composite material according to claim 9 based on graphene, which is characterized in that institute
Stating wire is stainless steel wire, and diameter is 2.8~7.8mm of φ.
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| CN109706347A (en) * | 2018-12-29 | 2019-05-03 | 厦门十一维科技有限公司 | The preparation method and its preparation facilities of oriented graphite alkene alloy composite materials |
| CN115838880A (en) * | 2022-12-06 | 2023-03-24 | 中车工业研究院(青岛)有限公司 | Preparation method of copper-graphene composite material |
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