CN110310765A - A kind of carbon nanotube enameled wire and its application - Google Patents
A kind of carbon nanotube enameled wire and its application Download PDFInfo
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- CN110310765A CN110310765A CN201910481372.3A CN201910481372A CN110310765A CN 110310765 A CN110310765 A CN 110310765A CN 201910481372 A CN201910481372 A CN 201910481372A CN 110310765 A CN110310765 A CN 110310765A
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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
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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
- H01B13/0006—Apparatus or processes specially adapted for manufacturing conductors or cables for reducing the size of conductors or cables
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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
- H01B13/02—Stranding-up
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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
- H01B13/06—Insulating conductors or cables
- H01B13/065—Insulating conductors with lacquers or enamels
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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
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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
- H01B7/02—Disposition of insulation
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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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
- H01B7/17—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
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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
- H01B7/17—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
Abstract
The present invention provides a kind of carbon nanotube enameled wire and its applications, the carbon nanotube enameled wire includes carbon nanotube tube core, and it is coated on the insulating layer of carbon nanotube tube core outer surface, wherein the carbon nanotube tube core is the carbon nano-tube fibre beam formed by several carbon nano-tube fibres.There is good flexibility based on carbon nano-tube fibre itself, while insulating materials is flexible paint, is resistant to thousands of degree high temperature, after fiber surface solidification, still there is flexibility, flexible winding, guarantee that the carbon nanotube enameled wire flexibility being prepared is strong, it will not be because being broken caused by high temperature or impact.Carbon nano tube surface coating insulating materials can make carbon nano-tube fibre surface insulation, and winding is avoided to lead to short circuit；Meanwhile contact of the carbon nano-tube fibre with oxygen can be greatly reduced, when conductor being made to connect high current, carbon nano-tube fibre will not fuse at relatively high temperatures, improve the security performance of materials'use.
Description
Technical field
The invention belongs to wire and cable field more particularly to a kind of carbon nanotube enameled wire and its applications.
Background technique
Enameled wire is the main raw material(s) of the products such as motor, electric appliance and household electrical appliance, and especially power industry in recent years is real
Show and maintained sustained and rapid growth, the rapid development of household electrical appliance brings broader field to the application of enameled wire, following
It is that more stringent requirements are proposed to enameled wire.Enameled wire is a principal item of winding wire, by two groups of conductor and insulating layer
At using multiple japanning, baking after the annealed softening of bare wire.But it produces and not only met the requirements of the standard, but also meet visitor
The product that family requires is not easy to, it is influenced by raw material quality, technological parameter, production equipment, the factors such as environment, therefore, respectively
The mass property of kind enameled wire is different, but all has mechanical performance, chemical property, electrical property, the big performance of hot property four.
The type of enameled wire is varied, and develop in the world earliest kind first is that acetal paint envelope curve, though the enameled wire
Temperature resistant grade is low, but since it is widely used in oil-immersed type transformer with excellent high temperature resistant hydrolysis property.Secondly, poly-
Ester enameled wire, polyurethane wire enamel successively by Germany succeed in developing, polyurethane wire enamel is Bayer Bitterfeld GmbH in nineteen thirty-seven
Develop, since it has a straight weldering property, high frequency tolerant performance and can dyeing property, therefore it is wide in the fields such as electronics, electric appliance
General application.Then, higher and higher to the Property requirements of enameled wire, insulating lacquer layer is by being modified polyester with imines
And it improves heat resistance and further improves its application.Then, polyimide enameled wire, polyamidoimide paint, composite coating
The enameled wire that the multiple materials such as enameled wire are prepared has carried out different degrees of improvement, improves the performance of various aspects.
Currently, domestic most commonly used enamel-cover wire material is generally copper wire enameled wire, and when copper wire enameled wire leads to high current
When, copper wire would generally because of electric current generate high temperature or impact and be broken, be easy to cause electric appliance to damage, security performance is weak；Meanwhile
Copper wire enamel-cover wire material is heavier, and current-carrying capacity is lower, inconvenient, dangerous in use.
Summary of the invention
The problem to be solved in the present invention
The purpose of the present invention is to provide a kind of carbon nanotube enameled wire and its applications, it is intended to solve prior art enameled wire
Middle copper wire is because of high temperature or impact easy fracture and the low problem of current-carrying capacity.
Solution to the problem
For achieving the above object, The technical solution adopted by the invention is as follows:
One aspect of the present invention provides a kind of carbon nanotube enameled wire, and the carbon nanotube enameled wire includes carbon nanotube pipe
Core, and it is coated on the insulating layer of carbon nanotube tube core outer surface, wherein if the carbon nanotube tube core is to be received by dry carbon
The fibroplastic carbon nano-tube fibre beam of mitron.
Preferably, the carbon nanotube tube core is by several or tens carbon nano-tube fibres are had twirl and silk or non-twist
And silk is formed；
Preferably, the carbon nano-tube fibre is made of carbon nano-tube film through torsion；
Preferably, the surface of the carbon nano-tube film is combined with conductive nano metallic particles；
Preferably, the conductive nano metallic particles in nano-Ag particles, nano copper particle, nanogold particle one
Kind is two or more；
Preferably, the material of the insulating layer, it is sub- selected from acetal paint, polyurethane paint, polyimide varnish, Polyester Paint, polyester
The one or more of amine paint, polyvinyl alcohol paint, epoxy resin coating；
Preferably, the material of the insulating layer is ceramic paint；
The quality of the material of the preferred insulating layer is the 1-30% of the quality of the carbon nanotube enamel-cover wire material；
Preferably, between the tube core and the insulating layer, also it is folded with auxiliary conductive layer；
Preferably, the material of the auxiliary conductive layer is selected from conductive metal material, carbon nanotube conducting material, graphene and leads
One of electric material is two or more；
Preferably, the quality of the conductive material is the 30-80% of the quality of the carbon nanotube enamel-cover wire material.This hair
Bright another aspect provides a kind of preparation method of carbon nanotube enameled wire, comprising the following steps:
Carbon nano-tube film is provided, the carbon nano-tube film is reversed, then is had twirl and silk or non-twist and silk obtain
To carbon nano-tube fibre beam；
Using polar solvent to the carbon nano-tube fibre Shu Jinhang densified, carbon nanotube tube core is obtained；
Insulating materials is coated in the superficies of the carbon nanotube tube core, curing process obtains carbon nanotube enameled wire.
Preferably, in the step of carbon nano-tube film is reversed, the twist of the torsion is 1200-
1500tpm；
Preferably, in the carbon nano-tube fibre Shu Jinhang densified, by the way of coating or impregnating.
Preferably, the polar solvent is selected from water, ethyl alcohol, ethylene glycol, N-Methyl pyrrolidone, dimethyl sulfoxide, N, N-
Dimethylformamide, acetone, hydrochloric acid, sulfuric acid, nitric acid, polyvinyl alcohol, polyvinyl butyral, epoxy resin any one or
It is several.
Another aspect of the invention provides a kind of micro motor, and the coil wound on the micro motor is the carbon nanometer
Pipe enameled wire.
Invention effect
Carbon nanotube enameled wire provided by the invention, has the advantage that
Firstly, the carbon nanotube wick being made into carbon nano-tube fibre, compared to the copper wire enameled wire of same diameter and length
With carbon nano-tube fibre enameled wire, carbon nano-tube fibre enameled wire weight is lighter, and electric conductivity and high temperature resistance are close to copper wire
Enameled wire；And carbon nanotube tube core has good flexibility, and superficial layer not will crack in use process.
Secondly, the insulating layer for being coated on carbon nanotube die surfaces has the characteristics that reduce current-carrying capacity, the material of insulating layer
Decline carbon nanotube enameled wire conductive resistance, improves the current-carrying capacity of carbon nanotube enameled wire and enhance carbon nanotube enamel-cover
The electric conductivity of line；Meanwhile having the characteristics that impact-resistant, it is coated on the outer layer of carbon nanotube tube core, can guarantee to be prepared
Carbon nanotube enameled wire flexibility it is strong, will not because high temperature or impact caused by be broken；And the table of carbon nanotube tube core can be made
Face insulation, avoids winding from leading to short circuit, greatly reduces contact of the carbon nanotube tube core with oxygen, when conductor being made to connect high current,
Carbon nanotube tube core will not fuse at relatively high temperatures, improve the security performance of materials'use.
The preparation method of carbon nanotube enameled wire provided by the invention, provides carbon nano-tube film, to carbon nano-tube film
It is first reversed, then is had twirl and silk or non-twist and silk obtain carbon nano-tube fibre beam；Again using polar solvent to carbon nanotube
Fibre bundle carries out densified, using the dipolar interaction principle between polar molecule, reduces fiber cross section product, carbon is made to receive
Mitron fibre bundle is fine and close, reduces the gap between carbon nano-tube fibre beam, and then reduce small point between carbon nano-tube fibre beam
Sub- impurity；Insulating materials is coated in the superficies of carbon nanotube tube core again, curing process obtains carbon nanotube enameled wire, applies
The insulating materials covered declines the enameled wire materials conductive resistance being prepared, and improves the current-carrying of carbon nanotube enamel-cover wire material
It measures and enhances the electric conductivity of enameled wire.The preparation method is simple, easy to operate, equipment that should not be large-scale, is adapted for work
Industry metaplasia produces.
A kind of micro motor provided by the invention, the enameled wire for being closely wound micro motor are above-mentioned carbon nanotube paint
Envelope curve, used carbon nanotube enameled wire have good flexibility and high temperature resistance, will not make because of high temperature or impact
At fracture；Its conductive resistance decline simultaneously, improves its current-carrying capacity and electric conductivity, ensure that the safety of the micro motor,
Keep the micro motor more durable.
Detailed description of the invention
Fig. 1 is the preparation flow figure for the carbon nanotube enameled wire that the embodiment of the present invention 1 provides.
Fig. 2 is the structure chart for the carbon nanotube enameled wire that the embodiment of the present invention 1 provides.
Fig. 3 is the structure chart for the carbon nanotube enameled wire that the embodiment of the present invention 2 provides.
Fig. 4 is the pictorial diagram for the carbon nanotube enameled wire motor that the embodiment of the present invention 1 provides.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.The embodiment of the present invention provides a kind of carbon and receives
Mitron enameled wire, the carbon nanotube enameled wire include carbon nanotube tube core, and are coated on the carbon nanotube tube core appearance
The insulating layer in face, wherein the carbon nanotube tube core is the carbon nano-tube fibre beam formed by several carbon nano-tube fibres.
Preferably, the carbon nanotube tube core is by several or tens carbon nano-tube fibres are had twirl and silk or non-twist
And silk is formed.
Preferably, several carbon nano-tube films refer to pulls out one fixed width from overlength array of multi-walled carbon nanotubes
Carbon nano-tube film.Preferably, the overlength array of multi-walled carbon nanotubes the preparation method is as follows: in deposition on substrate catalyst
Layer, is placed in chemical vapour deposition reactor furnace and is passed through protective gas, be warming up to 700 DEG C, then be passed through carbon-source gas, flow control
System reacts 20min, to generate carbon nano pipe array on substrate in 1.5L/min.The overlength multi-wall carbon nano-tube being prepared
The diameter of tube material is 6-10nm, and length is 100-1200 μm；The diameter of carbon nanotube generally can be with reactor tube walls number, tube wall
Number is the smaller the better, and it is higher to represent tube wall utilization rate；Selecting diameter is the carbon nano-tube material of 6-10nm, and tube wall is few, tube wall benefit
Higher with rate, carbon nano-tube fibre electric conductivity can improve, and quality is lighter under same resistance；If selecting carbon nano-tube material diameter big
In 10nm, then tube wall utilization rate is lower, and it is poor that material thermal resistance energy, security performance is prepared.Further, selected carbon nanometer
Tube material length is 100-1200 μm, if length will affect array membrane performance less than 100 μm or greater than 1200 μm, can be reduced
The membrane performance of material, weaker membrane will have a direct impact on the mechanical twisting of carbon nano-tube film, further make carbon nanotube
The carbon nano-tube fibre compactness that film is twisted is poor, affects the preparation of subsequent carbon nanotube enameled wire.
Preferably, the width of the carbon nano-tube film that one fixed width is pulled out from carbon nano pipe array is 0.1-
20cm, thin-film width directly affect the diameter of carbon nano-tube fibre, and width is bigger, and diameter is bigger, if selected carbon nanotube is thin
Membrane material width is too small, and the carbon nano-tube fibre diameter being prepared is smaller, can not be prepared that flexibility is strong, conducts electricity very well
Carbon nanotube enameled wire；20cm is the most wide degree in current carbon nano pipe array, to increase its width, preparation process meeting
It is affected, cost can further increase, and be unfavorable for the processing of subsequent material.For the copper wire paint of same diameter and length
Envelope curve and carbon nano-tube fibre enameled wire, carbon nano-tube fibre enameled wire weight is lighter, and electric conductivity and high temperature resistance are close
Copper wire enameled wire.
Preferably, torsion is carried out to the carbon nano-tube film and carbon nano-tube fibre is made.Wherein, to the carbon nanotube
Film carries out mechanical twisting and specifically refers to twist carbon nano-tube film, and carbon nano-tube film is made to become carbon nanotube fibre
Dimension, it is preferred that during the progress mechanical twisting, the twist of the mechanical twisting is 100-15000tpm, and different in width is thin
The best twist of film is different.In the specific embodiment of the invention, twist 1200-1500tpm is the best twirl of 7.5cm wide film
Degree, which just completely can become film fiber, and will not excessively twist, the feelings for avoiding fiber from not clamping at both ends
Under condition, fiber can be caused to be intertwined certainly since the twist is too big, after being able to carry out the carbon nano-tube fibre being prepared
Continuous processing.
In a preferred embodiment of the invention, the diameter of the carbon nano-tube fibre is 0.001-1mm.Prepared carbon nanometer
The diameter of pipe fiber is determined that fibre diameter is bigger by carbon nano-tube film width, and strength value is lower, and flexibility is stronger, preparation
Obtained carbon nanotube enameled wire flexibility is more preferable, the more difficult fracture in high temperature or thump.If the carbon nanometer
Pipe fibre diameter is less than 0.001mm, then the material diameter is too small, excessively tiny, is unfavorable for subsequent process；If carbon nanometer
The diameter of pipe fiber is greater than 1mm, then required carbon nano-tube film has wider width, causes to the preparation of previous materials
Difficulty, improves cost.Preferably, the carbon nano-tube fibre can be single-root carbon nano-tube fiber, be also possible to several
Or tens fibers have the fibre bundle that twirl merges.In the specific embodiment of the invention, one be prepared piece is straight
Diameter is the fiber of 1mm, can be and is twisted by plural layers or the fiber of ten 0.1mm diameters and at a branch of, or
It is the fiber of hundred 0.01mm diameters and at a branch of.In a preferred embodiment of the invention, the carbon nanotube wick be by several or
Tens carbon nano-tube fibres have twirl or the non-twist fibre bundle merged.
Preferably, conductive nano metallic particles is adhered on the surface of the carbon nano-tube film.The conductive nano metal
Grain can reduce the resistance of the carbon nanotube enameled wire of preparation to a certain extent.Preferably, the conductive nano metallic particles, choosing
From the one or more of nano-Ag particles, nano copper particle, nanogold particle, wherein the metallic particles of the attachment is big
Small is 8-12nm；Still more preferably, the metallic particles size of the spray attachment is 10nm.The attachment of conductive nano metallic particles
Amount further determines that carbon nano-tube film intensity is related with length of carbon nanotube according to carbon nano-tube film, when carbon nanotube is long
When degree is 100-200 μm, spray attachment amount can be 10%；When length of carbon nanotube is 500-600 μm, spray attachment amount can be 30%.If
The attachment of conductive nano metallic particles is excessive, then film is easily broken off, and will affect the production of subsequent carbon nanotube enameled wire.
Preferably, insulating layer is being coated in carbon nanotube tube core outer surface.In a preferred embodiment of the invention, described
The material of insulating layer is selected from acetal paint, polyurethane paint, polyimide varnish, Polyester Paint, polyester-imide paint, polyvinyl alcohol paint, epoxy
The one or more of lacquer type organic coating.In the specific embodiment of the invention, the material of the insulating layer is ceramic paint.Insulating layer
Material can make enamelled wire surface insulate, and conduction causes motor short-circuit between fiber when avoiding on motor, be received based on carbon
Mitron fiber itself has good flexibility, while the material of insulating layer is flexible paint, is resistant to thousands of degree high temperature, is coated in fiber
After surface cure, still there is flexibility, flexible winding guarantees that the carbon nanotube enameled wire flexibility being prepared is strong, Bu Huiyin
High temperature or impact cause to be broken.In the specific embodiment of the invention, Ceramics paint is coated as the material of insulating layer, institute
The high temperature that ceramic paint is resistant to 1000 DEG C or more is stated, is beneficial to improve the heat-resisting quantity for the carbon nanotube enamel-cover wire material being prepared
Can, keep the material being prepared not easy to break under the high temperature conditions, it is more durable.
Preferably, the quality of the material of the insulating layer is the 1-30% of the quality of the carbon nanotube enamel-cover wire material；
Different according to the quality of the material of insulating layer, conductor resistance can decline 20-200 times, when the quality of materials of insulating layer is more, increase
Add enameled wire weight, reduces the advantage of carbon nano-tube fibre enameled wire.If the quality of materials of insulating layer is fewer, material is caused to exist
Fiber surface distribution is discontinuous；After the material content of insulating layer reaches certain value, the material of insulating layer envelopes fiber completely.
If the material content of insulating layer is lower than 1%, it will lead to fiber surface without coating insulated paint completely, can be led when on motor
Cause short circuit；If the material content of insulating layer is greater than 30%, enameled wire weight will increase, reduce the excellent of carbon nano-tube fibre enameled wire
Gesture.Preferably, control insulating layer material content be 1-30%, substantially 1-10 μm of the thickness of obtained insulating layer.
Still more preferably, between the tube core and the insulating layer, also it is folded with auxiliary conductive layer.Wherein, described
Auxiliary conductive layer can be one or more layers.Preferably, the material of the auxiliary conductive layer is selected from conductive metal material, carbon nanotube
One of conductive material, graphene conductive material are two or more.Wherein, the conductive metal material is selected from bronze, silver
Powder, copper powder, yellow gold it is any.
In a preferred embodiment of the invention, the quality of the conductive material is the quality of the carbon nanotube enamel-cover wire material
30-80%.If conductive material content will lead to fiber surface very little does not have complete coated with conductive slurry, resistance declines degree too
It is small；If conductive material content will increase enameled wire weight too much, the advantage of carbon nano-tube fibre enameled wire is reduced.Preferably, originally
Substantially 1-20 μm of thickness for inventing the conductive paint being prepared.
Carbon nanotube enameled wire provided by the invention, has the advantage that
Firstly, the carbon nanotube wick being made into carbon nano-tube fibre, compared to the copper wire enameled wire of same diameter and length
With carbon nano-tube fibre enameled wire, carbon nano-tube fibre enameled wire weight is lighter, and electric conductivity and high temperature resistance are close to copper wire
Enameled wire；And carbon nanotube tube core has good flexibility, and superficial layer not will crack in use process.
Secondly, the insulating layer for being coated on carbon nanotube die surfaces has the characteristics that reduce current-carrying capacity, the material of insulating layer
Decline carbon nanotube enameled wire conductive resistance, improves the current-carrying capacity of carbon nanotube enameled wire and enhance carbon nanotube enamel-cover
The electric conductivity of line；Meanwhile having the characteristics that impact-resistant, it is coated on the outer layer of carbon nanotube tube core, can guarantee to be prepared
Carbon nanotube enameled wire flexibility it is strong, will not because high temperature or impact caused by be broken；And the table of carbon nanotube tube core can be made
Face insulation, avoids winding from leading to short circuit, greatly reduces contact of the carbon nanotube tube core with oxygen, when conductor being made to connect high current,
Carbon nanotube tube core will not fuse at relatively high temperatures, improve the security performance of materials'use.
Correspondingly, above-mentioned carbon nanotube enameled wire is prepared by following preparation method, Fig. 1 is that the embodiment of the present invention provides
Carbon nanotube enameled wire preparation flow figure, as shown in Figure 1.
The preparation method comprises the following steps:
S01., carbon nano-tube film is provided, the carbon nano-tube film is reversed, then had twirl and silk or it is non-twist simultaneously
Silk obtains carbon nano-tube fibre beam；
S02. carbon nanotube tube core is obtained to the carbon nano-tube fibre Shu Jinhang densified using polar solvent；
S03. insulating materials is coated in the superficies of the carbon nanotube tube core, curing process obtains carbon nanotube paint
Envelope curve.
In above-mentioned steps S01, carbon nano-tube film is provided, the carbon nano-tube film is reversed to obtain carbon nanometer
Pipe fiber, then had twirl and silk or non-twist and silk obtain carbon nano-tube fibre beam.Preferably, the carbon nano-tube film is carried out
Mechanical twisting specifically refers to twist carbon nano-tube film, and carbon nano-tube film is made to become carbon nano-tube fibre, it is preferred that
During the carry out mechanical twisting, the twist of the mechanical twisting is 100-15000tpm, the best twirl of different in width film
Degree is different.In the specific embodiment of the invention, twist 1200-1500tpm is the best twist of 7.5cm wide film, which can
It film is just become fiber completely, and will not excessively twist, avoid fiber in the case where both ends do not clamp, it can be due to
The twist is too big and fiber is caused so that the carbon nano-tube fibre being prepared is able to carry out subsequent processing from being intertwined, then
There is twirl and silk or non-twist and silk obtain carbon nano-tube fibre beam, the carbon nanotube tube core is by several or tens carbon are received
Mitron fiber is had twirl and silk or non-twist and silk are formed.
Specifically, in above-mentioned steps S02, using polar solvent to the carbon nano-tube fibre Shu Jinhang densified,
Obtain carbon nanotube sandwich layer.Carrying out densified to material is that liquid is fine and close, mainly utilizes the polar molecule in polar solvent
Between dipolar interaction principle, reduce fiber cross section product, keep carbon nano-tube fibre fine and close, reduce carbon nano-tube fibre it
Between gap, and then reduce carbon nano-tube fibre beam between small molecular weight impurity.Preferably, the polar solvent is optional volatile
The solution of class or not volatile class, selection use the solution of volatile class, after carrying out densified to fiber, fiber surface
Can be even closer, other substances will not be remained；It, can be in fiber after drying if carrying out densified using not volatile solution
Surface, which leaves other chemical substances, keeps its surface modified, such as increases and slurry/insulated paint caking ability performance.It is excellent in the present invention
It selects in embodiment, the polar solvent is selected from water, ethyl alcohol, ethylene glycol, N-Methyl pyrrolidone, dimethyl sulfoxide, N, N- diformazan
Base formamide, acetone, hydrochloric acid, sulfuric acid, nitric acid, polyvinyl alcohol, polyvinyl butyral, epoxy resin any one or it is several
Kind.Different solutions are also different to the densification effects of carbon nano-tube fibre due to molecular polarity difference.In the specific embodiment of the invention
In, select ethyl alcohol to carry out densified to carbon nano-tube fibre as polar solvent.
Preferably, in the step of using polar solvent to the carbon nano-tube fibre Shu Jinhang densified, the densification
Processing mode is selected from any one that cotton swab is coated and impregnated.Wherein, using cotton swab coating method to carbon nano-tube fibre into
The operating method of row densified are as follows: with being stained with the cotton swab of alcohol to the carbon nano-tube fibre being prepared 2-3 times
?；The operating method of densified is carried out to carbon nano-tube fibre using the method for immersion are as follows: impregnate carbon nano-tube fibre
Into alcohol 1-2 minutes, taking-up.Densified is mainly the dipolar interaction principle utilized between polar molecule, is subtracted
Small fiber cross section product, keeps carbon nano-tube fibre fine and close, reduces the gap between carbon nano-tube fibre, and then reduce carbon nanotube
Small molecular weight impurity between fiber is conducive to subsequent processing technology.
Specifically, coating insulating materials, solidification in the superficies of the carbon nanotube tube core in above-mentioned steps S03
Processing, obtains carbon nanotube enameled wire.The material and dosage of the insulating materials of the coating are as described above, no longer excessive herein
It illustrates.Preferably, the condition of cure is adjusted according to the condition that the supplier of different insulation paint materials provides.In this hair
In bright specific embodiment, using ceramic paint as insulation paint material, the surface cure and baking and curing of ceramic coating are insulation
The purpose of condition of cure provided by paint supplier, surface cure is to dry coating surface, and second step hot setting is to make coating
In polymer react, realize secondary curing, specifically, surface cure condition be room temperature 20-30min, item is fully cured
Part is room temperature 72h.
In a preferred embodiment of the invention, between the inner core material and the insulating materials, also it is folded with additional conductive
Layer, the preparation method comprises the following steps:
G01., carbon nano-tube fibre is provided；
G02. densified is carried out to the carbon nano-tube fibre using polar solvent, obtains carbon nanotube sandwich layer；
G03. layer of conductive material is coated in the carbon nanotube wick outer layer, solidification obtains auxiliary conductive layer；
G04. one layer of insulating materials is coated in the auxiliary conductive layer outer layer, solidification obtains carbon nanotube enameled wire.
Specifically, above-mentioned steps G01 and above-mentioned steps S01 are always, above-mentioned steps G02 is consistent with above-mentioned steps S02, herein
No longer it is illustrated.
Specifically, in above-mentioned steps G03, before the carbon nanotube wick outer layer coats one layer of insulating materials, in institute
It states carbon nanotube wick outer layer and coats one or more layers conductive material.One or more layers conduction is coated in the carbon nanotube wick outer layer
After material, solidified to obtain carbon nanotube enameled wire.The condition of cure is according to the supplier of different conductive paint materials
The condition of offer is adjusted.In the specific embodiment of the invention, coated using conductive silver paste in the carbon nanotube wick outer layer
One layer, the rate of sizing is about 70% or so, 80-100 DEG C of baking and curing 30-40 minutes.
Specifically, coating one layer of insulating materials in the additional conductive layer surface, solidification obtains in above-mentioned steps G04
Carbon nanotube enameled wire.Concrete operation method such as above-mentioned steps S04 is consistent, is no longer illustrated herein.
The preparation method of carbon nanotube enameled wire provided by the invention, provides carbon nano-tube film, to carbon nano-tube film
It is first reversed, then is had twirl and silk or non-twist and silk obtain carbon nano-tube fibre beam；Again using polar solvent to carbon nanotube
Fibre bundle carries out densified, using the dipolar interaction principle between polar molecule, reduces fiber cross section product, carbon is made to receive
Mitron fibre bundle is fine and close, reduces the gap between carbon nano-tube fibre beam, and then reduce small point between carbon nano-tube fibre beam
Sub- impurity；Insulating materials is coated in the superficies of carbon nanotube tube core again, curing process obtains carbon nanotube enameled wire, applies
The insulating materials covered declines the enameled wire materials conductive resistance being prepared, and improves the current-carrying of carbon nanotube enamel-cover wire material
It measures and enhances the electric conductivity of enameled wire.The preparation method is simple, easy to operate, equipment that should not be large-scale, is adapted for work
Industry metaplasia produces.
Correspondingly, the coil wound on the micro motor is institute the embodiment of the invention also provides a kind of micro motor
The carbon nanotube enameled wire stated, used carbon nanotube enameled wire have good flexibility and high temperature resistance, will not
Because being broken caused by high temperature or impact；Its conductive resistance decline simultaneously, improves its current-carrying capacity and electric conductivity, ensure that this is miniature
The safety of motor keeps the micro motor more durable.
It will be further illustrated below with specific embodiment.
Embodiment 1
A kind of carbon nanotube enameled wire and preparation method thereof, comprising the following steps:
The carbon nano-tube film that width is 7.5cm, length 3m are pulled out from carbon nano pipe array；
Mechanical twisting, twist 1200-1500tpm are carried out to above-mentioned film using twist instrument, acquisition diameter is 0.09mm
The carbon nano-tube fibre of left and right；
Ethanol solution processing is carried out to above-mentioned carbon nano-tube fibre, makes its densification；
To treated carbon nano-tube fibre, 10 are merged, and twist 100tpm is uniform on surface later
One layer of flexible ceramic coating, rate of sizing 10-30% are coated, which includes that 5-30% ceramic paint is dissolved in water or second
In alcohol, surface cure condition is room temperature 20-30min, and it is room temperature 72h that condition, which is fully cured, finally obtains carbon nanotube enameled wire,
Its structure such as Fig. 2, the carbon nanotube sandwich layer that the carbon nanotube enameled wire is made into carbon nano-tube fibre, in the carbon nanotube
One layer insulating of sandwich layer outer cladding.
Embodiment 2
A kind of carbon nanotube enameled wire and preparation method thereof, comprising the following steps:
The carbon nano-tube film that width is 7.5cm, length 3m are pulled out from carbon nano pipe array；
Mechanical twisting, twist 1200-1500tpm are carried out to above-mentioned film using twist instrument, acquisition diameter is 0.09mm
The carbon nano-tube fibre of left and right；
Ethanol solution processing is carried out to above-mentioned carbon nano-tube fibre, makes its densification；
To treated carbon nano-tube fibre, 3 are merged, twist 100tpm, are coated later on surface
One layer of conductive silver paste, the rate of sizing are about 70% or so, 80-100 DEG C of baking and curing at least half an hour；
One layer of PVA insulated paint is coated in above-mentioned conductive surface, PVA insulated paint is the PVA aqueous solution that concentration is 10%, 80 DEG C
Baking and curing at least 24 hours, carbon nanotube enameled wire is finally obtained, structure such as Fig. 3, the carbon nanotube enameled wire is with carbon
The carbon nanotube sandwich layer that nanotube fibers are made into, in one layer of conductive paste bed of material of the carbon nanotube sandwich layer outer cladding, described
One layer insulating of conductive paste bed of material outer cladding, the carbon nanotube enamel-cover line resistance are 10 Ω or so.
The carbon nanotube enameled wire that embodiment 1 and embodiment 2 are prepared is wrapped on motor respectively.Wherein, implement
The enameled wire motor that example 1 is prepared is as shown in Figure 4, wherein the coil wound on the micro motor is that embodiment 1 is prepared into
The carbon nanotube enameled wire arrived.Can obtain after tested: carbon nanotube enameled wire described in embodiment 1 winds around a micro motor
On, voltage be 6V, electric current be 0.01A when, the motor can stable rotation, it is noiseless.Carbon nanotube enameled wire described in embodiment 2
Wind around on a micro motor, in voltage 1.5-12V, the motor can stable rotation, it is noiseless.
Comparative example 1
Using the carbon nano-tube fibre enameled wire for the same diameter and length bought on the market, a miniature horse is wound around
It up to upper, and is tested under 1.5-12V voltage, the results are shown in Table 1.
The motor detecting situation of the different carbon nano-tube fibre windings of table 1
It is strong using carbon nanotube enameled wire flexibility prepared by the present invention, it can be closely wound applied on motor, prepare
Obtained motor light weight, can be with stable rotation under 1.5-12V voltage, will not be because being broken caused by high temperature or impact, and motor is more
Add durable, stability is more preferable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (16)
1. a kind of carbon nanotube enameled wire, which is characterized in that the carbon nanotube enameled wire includes carbon nanotube tube core, and packet
Overlay on the insulating layer of carbon nanotube tube core outer surface, wherein the carbon nanotube tube core is by several carbon nano-tube fibres
The carbon nano-tube fibre beam of formation.
2. carbon nanotube enameled wire according to claim 1, the carbon nanotube tube core is by several or tens carbon
Nanotube fibers are had twirl and silk or non-twist and silk are formed.
3. carbon nanotube enameled wire according to claim 2, which is characterized in that the carbon nano-tube fibre is by carbon nanotube
Film is made through torsion.
4. carbon nanotube enameled wire according to claim 3, which is characterized in that the surface of the carbon nano-tube film is adhered to
There is conductive nano metallic particles.
5. carbon nanotube enameled wire according to claim 4, which is characterized in that the conductive nano metallic particles is selected from and receives
One or more of rice Argent grain, nano copper particle, nanogold particle.
6. carbon nanotube enameled wire according to any one of claim 1 to 5, which is characterized in that the material of the insulating layer
Material, selected from acetal paint, polyurethane paint, polyimide varnish, Polyester Paint, polyester-imide paint, polyvinyl alcohol paint, epoxy resin coating one
Kind is two or more.
7. carbon nanotube enameled wire according to claim 6, which is characterized in that the material of the insulating layer is ceramic paint.
8. carbon nanotube enameled wire according to any one of claim 1 to 5, which is characterized in that the material of the insulating layer
The quality of material is the 1-30% of the gross mass of the carbon nanotube enamel-cover wire material.
9. carbon nanotube enameled wire according to any one of claim 1 to 5, which is characterized in that the tube core and described
Between insulating layer, it is also folded with auxiliary conductive layer.
10. carbon nanotube enameled wire according to claim 9, which is characterized in that the material of the auxiliary conductive layer is selected from
One of conductive metal material, carbon nanotube conducting material, graphene conductive material are two or more.
11. carbon nanotube enameled wire according to claim 10, which is characterized in that the quality of the conductive material is described
The 30-80% of the quality of carbon nanotube enamel-cover wire material.
12. a kind of preparation method of carbon nanotube enameled wire, which comprises the following steps:
Carbon nano-tube film is provided, the carbon nano-tube film is reversed, then is had twirl and silk or non-twist and silk obtain carbon
Nanotube fibers beam；
Using polar solvent to the carbon nano-tube fibre Shu Jinhang densified, carbon nanotube tube core is obtained；
Insulating materials is coated in the superficies of the carbon nanotube tube core, curing process obtains carbon nanotube enameled wire.
13. the preparation method of carbon nanotube enameled wire according to claim 12, which is characterized in that in the carbon nanotube
In the step of film is reversed, the twist of the torsion is 1200-1500tpm.
14. the preparation method of carbon nanotube enameled wire according to claim 12, which is characterized in that the carbon nanometer
When pipe fibre bundle carries out densified, by the way of coating or impregnating.
15. the preparation method of carbon nanotube enameled wire described in any one of 2 to 14 according to claim 1, which is characterized in that institute
State polar solvent be selected from water, ethyl alcohol, ethylene glycol, N-Methyl pyrrolidone, dimethyl sulfoxide, n,N-Dimethylformamide, acetone,
Hydrochloric acid, sulfuric acid, nitric acid, polyvinyl alcohol, polyvinyl butyral, epoxy resin any one or a few.
16. a kind of micro motor, which is characterized in that the coil wound on the micro motor is institute any in claim 1-11
The carbon nanotube enameled wire stated.
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