CN108806831A - A kind of conductive coating and graphene conductive layer of cable - Google Patents
A kind of conductive coating and graphene conductive layer of cable Download PDFInfo
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- CN108806831A CN108806831A CN201810594625.3A CN201810594625A CN108806831A CN 108806831 A CN108806831 A CN 108806831A CN 201810594625 A CN201810594625 A CN 201810594625A CN 108806831 A CN108806831 A CN 108806831A
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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
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
-
- 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
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- 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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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
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Abstract
The invention discloses a kind of conductive coating of cable and graphene conductive layers, are related to field of cable technology.The conductive fillers such as the conductive coating of cable provided by the invention, including composite conducting epoxy resin base, graphene powder, copper silver powder and other auxiliary agents；Conductive coating obtained is coated on the conductor periphery of cable, and graphene conductive layer is formed after coating drying.Superconducting characteristic using graphene and excellent capability of electromagnetic shielding are made novel conductive coating and can be applied in cable.Conductive coating is formed into graphene conductive layer, the resistivity of graphene conductive layer is between copper conductor and aluminium conductor, in the cable of same cross-sectional, can partial alternative copper conductor, reduce the dosage of copper conductor；In addition, the electron mobility of graphene conductive layer is high, the power transmission performance of cable can be effectively improved, the current-carrying capacity of cable is improved.
Description
Technical field
The present invention relates to field of cable technology more particularly to the conductive coatings and graphene conductive layer of a kind of cable.
Background technology
There is a serious shortage of external dependence degree is up to 75% to China's copper resource, and electric wire is produced as the second largest pillar in China
Industry accounts for 50% or more of China's copper total amount consumed.From the strategy of energy-saving and emission-reduction, copper conductor answering in electric wire is studied
With especially studying a kind of alternative copper conductor or partial alternative copper conductor carry out the material of power transmission is particularly important.
With the progress of science and technology, graphene is up to as novel two-dimentional carbon nanomaterial, thermal coefficient
5300W/mK, electron mobility is more than 15000cm under room temperature2/ Vs, resistivity about 10-6Ω cm, it is lower than copper or silver,
It is the material of resistivity minimum in the world, there is vast application prospect in power domain.
Most of existing metallic conduction coating adds a small amount of graphene or a small amount of gold all using resin as main base
Belong to powder, antifoaming agent, levelling agent, dispersant, coupling agent etc..Metallic conduction coating is commonly used in technical field of coatings, such as non-gold
Belong to the application in terms of the application of material, antistatic, the application etc. in terms of electronics industry.For to transmit the electric wire electricity based on electric power
For cable, the conductive capability of existing conductive coating also shows slightly insufficient compared with metallic conductor, and Given this it is necessary to develop one kind to lead
The new superconductive electric material that electric energy power can compare favourably with copper.
Invention content
The technical problem to be solved by the present invention is to reduce the usage amount in cable to copper, a kind of conduction of cable is provided
Coating and graphene conductive layer carry out power transmission with replacement or partial alternative copper conductor.
To solve the above-mentioned problems, in a first aspect, the present invention proposes a kind of conductive coating of cable, including following weight
Part component：
Base：28-32 parts of composite conducting epoxy resin；
Conductive filler：12-17 parts of graphene powders, 6-10 parts of metal powders, 10-15 parts of power of magnesium diboride and 14-
16 parts of titanium diboride powders；
Auxiliary agent：12-18 parts of disodium ethylene diamine tetraacetate powder, 8-12 parts of polyvinyl butyrals, 0.5-1 parts of growth agents with
And 5-8 parts of adhesives.
Further technical solution is for it：The graphene powder grain size is not more than 10 μm.
Further technical solution is for it：The metal powder grain size is not more than 10 μm.
Further technical solution is for it：The metal powder is at least one of silver powder or copper powder.
Further technical solution is for it：The titanium diboride powder grain size is not more than 10 μm.
Further technical solution is for it：The grain size of the composite conducting epoxy resin is not more than 30 μm, volume resistivity
No more than 1.0 × 101Ω·m。
Further technical solution is for it：The preparation process of above-mentioned conductive coating is as follows：
S1 weighs base, conductive filler and auxiliary agent by weight, spare；
The conductive filler of step S1 is uniformly mixed by S2；
The product of step S2 is added in S3 in base, is stirred 10-20 minutes with the speed of 400-600rpm；
Disodium ethylene diamine tetraacetate powder is added in S4 in the product of step S3, and 4-10 is stirred with the speed of 400-600rpm
Minute；
Growth agent is added in the product of step S4 in S5, is stirred 2-6 minutes with the speed of 400-600rpm；
Polyvinyl butyral is added in the product of step S5 in S6, is uniformly mixed；
Adhesive is added in the product of step S6 in S7, after being stirred evenly with the speed of 400-600rpm, you can uses.
Second aspect, the present invention provides a kind of graphene conductive layer, including the conductive coating described in first aspect, described to lead
Electrocoating paint even application is in the periphery of conductor, and after dry, conductive coating forms graphene conductive layer.
Compared with prior art, the attainable technique effect of present invention institute includes：Utilize the superconducting characteristic of graphene and excellent
Good capability of electromagnetic shielding is made novel conductive coating and can be applied in cable.Conductive coating is coated on conductor periphery, with
Graphene conductive layer is formed, the resistivity of graphene conductive layer is between copper conductor and aluminium conductor, in the cable of same cross-sectional
In, can partial alternative copper conductor, reduce the dosage of copper conductor；In addition, the electron mobility of graphene conductive layer is high, can effectively carry
The power transmission performance of high cable, improves the current-carrying capacity of cable.
Specific implementation mode
The technical solution in embodiment will be clearly and completely described below.Obviously, it will be described below embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It is also understood that in this embodiment of the present invention term used in the description merely for the sake of description particular implementation
Example purpose and be not intended to limit the embodiment of the present invention.Such as the institute in specification and appended book of the embodiment of the present invention
As use, other situations unless the context is clearly specified, otherwise " one " of singulative, "one" and "the" are intended to wrap
Include plural form.
Embodiment 1
A kind of conductive coating of cable provided in an embodiment of the present invention, including base, conductive filler and auxiliary agent.According to
Parts by weight, base are 28 parts of composite conducting epoxy resin；Conductive filler specifically includes：12 parts of graphene powders, 6 parts of silver-bearing copper mixing
Powder, 10 parts of power of magnesium diboride and 14 parts of titanium diboride powders；Auxiliary agent specifically includes：12 parts of disodium ethylene diamine tetraacetate powder
End, 8 parts of polyvinyl butyrals, 0.5 part of growth agent and 5 parts of adhesives；Preparation method is as follows：
S1 weighs base, conductive filler and auxiliary agent by weight, spare；
The conductive filler of step S1 is uniformly mixed by S2；
The product of step S2 is added in S3 in base, is stirred 10 minutes with the speed of 400rpm；
Disodium ethylene diamine tetraacetate powder is added in S4 in the product of step S3, is stirred 4 minutes with the speed of 400rpm；
Growth agent is added in the product of step S4 in S5, is stirred 2 minutes with the speed of 400rpm；
Polyvinyl butyral is added in the product of step S5 in S6, is uniformly mixed with 200rpm；
Adhesive is added in the product of step S6 in S7, after being stirred evenly with the speed of 400rpm, you can uses.
It should be noted that having the characteristics that quickly to bond for adhesive, after the completion of step S7, conduction should be applied immediately
Material comes into operation, and avoids knot hard.
In specific implementation, graphene powder grain size is not more than 10 μm.Electron mobility is more than under graphene room temperature
15000cm2/ Vs, resistivity about 10-6Ω cm, and be that paint coatings is made to have good electric conductivity, ultra-pure ultra micro must be used
Fine graphite alkene powder, could meet needs.
In specific implementation, silver-bearing copper mixed-powder grain size is not more than 10 μm.
In specific implementation, silver-bearing copper powder is the mixed-powder that silver powder and copper powder mix in any proportion.It should be noted that
The chemical stability of silver powder is good, and antiseptic property is excellent, and electric conductivity is high, is extremely excellent conductive filler.But it is limited by the valence of silver powder
Lattice are expensive, and production cost is higher, and use scope is limited.Copper powder have cheap price, have with electric conductivity similar in silver, applying
Special surface treatment is carried out to copper to improve the stability of copper, prevent copper from aoxidizing by adding some auxiliary agents in material.By silver powder
It is used in mixed way with copper powder, resistivity is less than 1.65 × 10-8Ω m, can match in excellence or beauty silver powder.
In specific implementation, titanium diboride powder grain size is not more than 10 μm, and resistivity is not more than 10 μ Ω cm, has good
Electric conductivity.
In specific implementation, the grain size of composite conducting epoxy resin is not more than 30 μm, and volume resistivity is not more than 1.0 × 101
Ω·m。
Very strong adhesive force and preferable adhesiveness that composite conducting epoxy resin has the body surfaces such as metal and
Electric conductivity etc., but cure and be molded comparatively laborious.
Preferably, composite conducting epoxy resin can be such that powder is sufficiently mixed and keep the original characteristic of powder, to metal bottom
Material has splendid adhesive force and high viscosity.
In specific implementation, in the case where being doped with carbon or other impurities, power of magnesium diboride is having magnetic field or electric current logical
It is out-of-date, there is excellent electric conductivity.
It should be noted that polyvinyl butyral is with strong binding force and water resistance, with composite conducting asphalt mixtures modified by epoxy resin
Fat is used cooperatively the adhesive force that can be improved with conductor.
It should be noted that growth agent can effectively improve the carried charge of particle in coating, for the outer surface of conductor
Groove has good spraying covering and levelling effect.Growth agent used in the present embodiment is that product type H308 powder increases electricity
Agent (production of certain company A).
It should be noted that adhesive requirement is high with metal powder degree of adhesion, coating coating can be made rapid later solid
The characteristics of change.Adhesive used in the present embodiment is composite powerful instant drying adhesive (production of certain B company), is mixed in coating, is stirred
Bonding can be cured in 10 seconds after stopping rapidly.Therefore, the conductive coating of the embodiment of the present invention needs vertical after preparing
It is prepared into the conductor of cable or the periphery coated on metallic conductor.
Embodiment 2
A kind of conductive coating of offer of the embodiment of the present invention weighs 30 parts of composite conducting epoxy resin by weight；By 15 parts
Graphene powder, 8 parts of metal silver-bearing copper mixed-powders, 13 parts of power of magnesium diboride and 15 parts of titanium diboride powders are uniformly mixed
Afterwards, it is added in composite conducting epoxy resin, is stirred 15 minutes with the speed of 500rpm；Keep rotating speed it is constant, then to
16 parts of disodium ethylene diamine tetraacetate powder are wherein added, continues stirring after five minutes, adds 0.8 part of growth agent, continue stirring 3
After minute；Rotating speed is down to 300rpm, 10 parts of polyvinyl butyrals are added, stir evenly；Add 8 parts of adhesion promoters
Adhesive simultaneously improves rotating speed and is stirred 5 minutes to get to obtained conductive coating to 500rpm.
It should be noted that the conductive coating needs made use in 10 minutes.Air can be utilized in specific implementation
The conductive coating even application made in metallic conductor periphery or is prepared into the conductor of cable by rifle.
Embodiment 3
A kind of conductive coating of offer of the embodiment of the present invention weighs 32 parts of composite conducting epoxy resin by weight；By 17 parts
Graphene powder, 10 parts of metal silver-bearing copper mixed-powders, 15 parts of power of magnesium diboride and 16 parts of titanium diboride powders are uniformly mixed
Afterwards, it is added in composite conducting epoxy resin, is stirred 20 minutes with the speed of 600rpm；Keep rotating speed it is constant, then to
18 parts of disodium ethylene diamine tetraacetate powder are wherein added, after continuing stirring 4 minutes, add 1 part of growth agent, continue 3 points of stirring
Zhong Hou；Rotating speed is down to 300rpm, 12 parts of polyvinyl butyrals are added, stir evenly；It is viscous to add 8 parts of adhesion promoters
Mixture simultaneously improves rotating speed and is stirred 5 minutes to get to obtained conductive coating to 600rpm.
It should be noted that the conductive coating needs made use in 10 minutes.Air can be utilized in specific implementation
The conductive coating even application made in metallic conductor periphery or is prepared into the conductor of cable by rifle.
Embodiment 4
The embodiment of the present invention provides a kind of graphene conductive layer, includes the conductive coating as described in embodiment 1,2,3.Now will
Conductive coating even application made from embodiment 1 forms graphene conductive layer in the periphery of metallic conductor after dry.
In the present embodiment, what conductor was selected is copper conductor, and the graphene conductive layer thickness being sprayed at around copper conductor exists
Between 0.1-0.2mm.
It should be noted that the present invention metallic conductor can be silver conductor, copper conductor, aluminium conductor or other meet state
Family standard GB/T3956-2008《The conductor of cable》Or international standard IEC60228《The conductor of insulated cable》Defined conductor,
The present invention is not specifically limited this.
It should be noted that the thickness of graphene conductive layer can be by those skilled in the art according to the transmittability of cable
And actual needs is adjusted, the present invention does not do this restriction of specific range.
Since the graphene conductive layer that conductive coating is formed has excellent electric conductivity in certain embodiments can be straight
The conductor that conductive coating is made to cable is connect, with the use of replacing whole metallic conductor in the cable.
Confirmatory experiment 1
The now graphene conductive layer made from copper conductor periphery, the novel conductor of formation to embodiment 4.Utilize double bridge
According to GB/T3048.4-2007《The 4th part of electric wire electrical performance test method：Conductor DC resistance is tested》Defined method
To novel conductor section 10mm2~300mm2Resistance (average value) at 20 DEG C is tested, and and GB/T3956-2008
《The conductor of cable》Conductor maximum resistance is compared at 20 DEG C specified in standard, the results are shown in Table 1：
Table 1 is coated with average resistance of the novel conductor of graphene conductive layer at 20 DEG C
As can be seen from Table 1,20 DEG C when, cross-sectional area of conductor 10mm2~300mm2Novel conductor resistance obviously compare standard gauge
Fixed maximum resistance reduces 2%~12%, therefore, is coated with the novel conductor of graphene conductive layer, the current-carrying capacity of cable will
It is greatly improved.
Confirmatory experiment 2
Now to embodiment 4 graphene conductive layer made from copper conductor periphery according to GB/T3048.2-2007《Electric wire
Electrical performance test method part 2：Metal material resistivity test》Test 20 DEG C when D.C. resistance maximum value, and with copper, aluminium
The resistivity of conductor is compared, and the results are shown in Table 2：
| Material | Copper conductor | Aluminium conductor | Graphene conductive layer |
| Resistance value Ω mm2/m | 0.017241 | 0.028264 | 0.021593 |
2 graphene of table superconducts layer resistivity
As can be seen from Table 2, graphene superconducts layer resistivity between copper conductor and aluminium conductor, excellent conduction
Performance and capability of electromagnetic shielding are attached at the periphery of copper conductor completely, partly instead of copper conductor, in the feelings of same cable sectional area
Under condition, reduce the usage amount of copper conductor, saves copper resource consumption, save cost.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, may refer to the associated description of other embodiment.
The above is the specific implementation mode of the present invention, but scope of protection of the present invention is not limited thereto, any ripe
It knows those skilled in the art in the technical scope disclosed by the present invention, various equivalent modifications can be readily occurred in or replaces
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (8)
1. a kind of conductive coating of cable, which is characterized in that including following parts by weight of component：
Base：28-32 parts of composite conducting epoxy resin；
Conductive filler：12-17 parts of graphene powders, 6-10 parts of metal powders, 10-15 parts of power of magnesium diboride and 14-16 parts
Titanium diboride powder；
Auxiliary agent：12-18 parts of disodium ethylene diamine tetraacetate powder, 8-12 parts of polyvinyl butyrals, 0.5-1 parts of growth agents and 5-
8 parts of adhesives.
2. conductive coating according to claim 1, which is characterized in that the graphene powder grain size is not more than 10 μm.
3. conductive coating according to claim 1, which is characterized in that the metal powder grain size is not more than 10 μm.
4. conductive coating according to claim 3, which is characterized in that the metal powder be in silver powder or copper powder at least
It is a kind of.
5. conductive coating according to claim 1, which is characterized in that the titanium diboride powder grain size is not more than 10 μm.
6. conductive coating according to claim 1, which is characterized in that the grain size of the composite conducting epoxy resin is not more than
30 μm, volume resistivity is not more than 1.0 × 101Ω·m。
7. conductive coating according to claim 1, which is characterized in that preparation process is as follows：
S1 weighs base, conductive filler and auxiliary agent by weight, spare；
The conductive filler of step S1 is uniformly mixed by S2；
The product of step S2 is added in S3 in base, is stirred 10-20 minutes with the speed of 400-600rpm；
Disodium ethylene diamine tetraacetate powder is added in S4 in the product of step S3, with 4-10 points of the speed stirring of 400-600rpm
Clock；
Growth agent is added in the product of step S4 in S5, and 2-6min is stirred with the speed of 400-600rpm；
Polyvinyl butyral is added in the product of step S5 in S6, is uniformly mixed；
Adhesive is added in the product of step S6 in S7, after being stirred evenly with the speed of 400-600rpm, you can uses.
8. a kind of graphene conductive layer, which is characterized in that described including such as claim 1-7 any one of them conductive coating
Conductive coating even application is in the periphery of conductor, and after dry, conductive coating forms graphene conductive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810594625.3A CN108806831A (en) | 2018-06-11 | 2018-06-11 | A kind of conductive coating and graphene conductive layer of cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594625.3A CN108806831A (en) | 2018-06-11 | 2018-06-11 | A kind of conductive coating and graphene conductive layer of cable |
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Family
ID=64088306
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859902A (en) * | 2019-01-14 | 2019-06-07 | 代荣记 | A kind of technique that manufacture has the mark naked twisted wire of security code |
| CN110189869A (en) * | 2019-06-10 | 2019-08-30 | 江苏南瑞恒驰电气装备有限公司 | A method of inhibit GIS bus and GIL equipment electric power to damage using high permeability material coated conductor |
| CN110299229A (en) * | 2019-06-05 | 2019-10-01 | 东莞市民兴电缆有限公司 | A kind of graphene coating superconducting core building environment-friendly cable |
| CN111223612A (en) * | 2020-01-13 | 2020-06-02 | 杭州慈源科技有限公司 | Normal temperature superconducting wire |
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| CN108129977A (en) * | 2017-12-22 | 2018-06-08 | 恒力盛泰（厦门）石墨烯科技有限公司 | A kind of graphene composite conductive coating and its preparation method and application |
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| CN111223612A (en) * | 2020-01-13 | 2020-06-02 | 杭州慈源科技有限公司 | Normal temperature superconducting wire |
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