CN110060812A - A kind of power cable and preparation method thereof of interior containing graphene shielded layer - Google Patents
A kind of power cable and preparation method thereof of interior containing graphene shielded layer Download PDFInfo
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- CN110060812A CN110060812A CN201910425016.XA CN201910425016A CN110060812A CN 110060812 A CN110060812 A CN 110060812A CN 201910425016 A CN201910425016 A CN 201910425016A CN 110060812 A CN110060812 A CN 110060812A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- H01B13/12—Insulating conductors or cables by applying loose fibres
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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
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/145—Pretreatment or after-treatment
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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
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/148—Selection of the insulating material therefor
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
- H01B3/082—Wires with glass or glass wool
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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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
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
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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
- H01B7/0266—Disposition of insulation comprising one or more braided layers 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
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
- H01B7/0283—Disposition of insulation comprising one or more extruded layers of insulation comprising in addition one or more other layers of non-extruded 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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers
Abstract
This application provides a kind of power cables of interior containing graphene shielded layer, including copper conductor, interior graphene gel coating band shielded layer, insulating layer, outer graphene gel coating band shielded layer, copper strip shielding layer, inner sheath, steel-tape armouring layer and the oversheath being sequentially arranged from inside to outside；Present invention also provides a kind of preparation methods of the power cable of above-mentioned interior containing graphene shielded layer；Interior graphene gel coating is by the lapping structure layer of the wrapped formation of graphene gel coating band with shielded layer with shielded layer and outer graphene gel coating, both for semiconductive shielding layer, graphene gel coating band includes insulating tape and the graphene gel coating that is coated on two surfaces of insulating tape；Above-mentioned graphene glue includes Graphene powder, adhesive, fatty alcohol polyoxyethylene ether and water；The volume resistivity of the graphene gel coating band is 1 × 10‑5Ω cm hereinafter, sheet resistance in 100 Ω hereinafter, improve homogenizing electric field effect, to substantially increase the operational safety of cable.
Description
Technical field
The present invention relates to power cable technical fields, a kind of power cable more particularly, to interior containing graphene shielded layer and
Preparation method.
Background technique
As Chinese Urbanization is accelerated with what is modernized, domestic electric system has also obtained development at full speed, electricity
The demand of cable and standard is required also to be continuously improved, national sector standard provides: the cable more than 5KV must use shielded layer,
The main function of shielded layer is it to be isolated with external electrical field in the cable electric field limitation, and obtain uniformly in insulating layer
Field distribution, while shielded layer also provides one layer of smooth, continuous, conductive, equipotential interface for insulating layer and conductor.Cable
Shielded layer is the very low and relatively thin semi-conductive layer of resistivity, can improve the electric force lines distribution in cable insulation, improve cable
Dielectric level.Semiconductive shielding layer can not only mitigate the magnetic field that cable is generated because of larger current in medium and high voltage cable, but also can
To play the role of ground protection.
In order to reach good electric conductivity, the preparation process of traditional semiconductive shielding layer is using in a polymer matrix
A large amount of carbon black (additive amount is 20wt%~50wt%) is added, to reach the conductivity of semiconductive effect.But addition is excessive
Carbon black be unfavorable for the processing performance of shielding material, the surface defect after extrusion molding is more；If the additive amount of carbon black is not achieved
It is required that then will affect the electric conductivity of shielded layer.Having excellent electric property and apparent height slickness is semi-conductive screen
The indispensable condition of layer.
Summary of the invention
The purpose of the present invention is to provide a kind of power cables of interior containing graphene shielded layer.Another object of the present invention exists
In a kind of preparation method for the power cable for providing interior containing graphene shielded layer.
In order to solve the above technical problems, technical solution provided by the invention are as follows:
A kind of power cable of interior containing graphene shielded layer, including copper conductor, interior graphene gel coating band shielded layer, insulation
Layer, outer graphene gel coating band shielded layer, copper strip shielding layer, inner sheath, steel-tape armouring layer and oversheath；
The copper conductor, interior graphene gel coating band shielded layer, insulating layer, outer graphene gel coating band shielded layer, copper strips
Shielded layer, inner sheath, steel-tape armouring layer and oversheath are sequentially arranged from inside to outside in the cable；
The interior graphene gel coating band shielded layer is wrapped to be coated with the copper conductor, and the insulating layer is coated in described
Graphene gel coating band shielded layer, shielded layer is wrapped is coated with the insulating layer, the copper strips for the outer graphene gel coating band
Shielded layer is wrapped to be coated with the outer graphene gel coating band shielded layer, and the inner sheath, which extrudes, is coated with the copper strip shielding
Layer, the steel-tape armouring layer is wrapped to be coated with the inner sheath, and the oversheath, which extrudes, is coated with the steel-tape armouring layer；
The interior graphene gel coating band shielded layer and outer graphene gel coating band shielded layer are by graphene gel coating
Lapping structure layer with wrapped formation；
The graphene gel coating band includes that insulating tape is applied with the graphene glue on the outer surface coated on the insulating tape
Layer.
Preferably, the insulating tape be glass fiber tape, for be woven into glass fiber tape per it is a branch of through to glass
It include 1~3 in fibre bundle for the insulating tape to be changed into the carbon fiber wire of semi-conductive tape, in glass fiber tape
The glass fiber strand per a branch of broadwise in include 1~3 for the insulating tape to be changed into the carbon of semi-conductive tape
Fiber filament.
Preferably, several are coated on the inner surface of the steel band in the steel-tape armouring layer in the spaced apart mirror of striated
The length direction of face silverskin, every mirror surface silverskin is parallel with the length direction of the steel band.
Preferably, the copper conductor is twisted annealed copper conductor.
Preferably, the insulating layer is ultraviolet light cross-linking polyethylene layer, the ultraviolet light cross-linking polyethylene layer
In the pre-buried glass fibre solid webbing being embedded with three-dimensional grid；
The glass fibre solid webbing is preparatory before the ultraviolet light cross-linking polyethylene layer extrudes molding
On outer surface of the interior graphene gel coating with shielded layer, the ultraviolet light cross-linking polyethylene layer it is fully wrapped around institute
Glass fibre solid webbing is stated, it is poly- that ultraviolet light cross-linking is filled in the three-dimensional grid of the glass fibre solid webbing
Ethylene Insulation Material is being extruded between the glass fibre solid webbing and the ultraviolet light cross-linking polyethylene layer
The hot-melt adhesive paste formed during type.
A kind of preparation method of the power cable of above-mentioned interior containing graphene shielded layer, the step carried out including next coming in order
It is rapid:
1) interior graphene gel coating band shielded layer is made by wrapped graphene gel coating band on copper conductor；
2) insulating layer is made by coating on outer surface of the interior graphene gel coating with shielded layer made from step 1)；
3) outer graphene glue is made by wrapped graphene gel coating band on the outer surface of the insulating layer made from step 2)
Coated tape shielded layer；
4) copper strips is made by wrapped copper strips on outer surface of the outer graphene gel coating with shielded layer made from step 3)
Shielded layer；
5) by extruding obtained inner sheath on the outer surface of copper strip shielding layer made from step 4)；
6) steel-tape armouring layer is made by wrapped steel band on the outer surface of the inner sheath made from step 5)；
7) it by extruding obtained oversheath on the outer surface of steel-tape armouring layer made from step 6), is made includes after the completion
The power cable of graphene shielded layer.
Preferably, the graphene glue for preparing graphene gel coating includes the component of following mass percent: 4.0%~
8.0% Graphene powder, 23%~27.5% adhesive, 1.5%~2.5% fatty alcohol polyoxyethylene ether, the water of surplus；
Graphene glue is coated on two length and width surfaces of insulating tape, graphene glue is made after graphene adhesive curing and applies
Layer band.
Preferably, the insulating layer is ultraviolet light cross-linking polyethylene layer, the ultraviolet light cross-linking polyethylene layer
In the pre-buried glass fibre solid webbing being embedded with three-dimensional grid；
The glass fibre solid webbing is preparatory before the ultraviolet light cross-linking polyethylene layer extrudes molding
On outer surface of the interior graphene gel coating with shielded layer, the ultraviolet light cross-linking polyethylene layer it is fully wrapped around institute
Glass fibre solid webbing is stated, it is poly- that ultraviolet light cross-linking is filled in the three-dimensional grid of the glass fibre solid webbing
Ethylene Insulation Material is being extruded between the glass fibre solid webbing and the ultraviolet light cross-linking polyethylene layer
The hot-melt adhesive paste formed during type；
The preparation method of the ultraviolet light cross-linking polyethylene layer includes the steps that next coming in order carry out:
A) glass fibre is spun into glass fiber yarn first, being then woven into the glass fiber yarn has three-dimensional
The glass fibre solid webbing of grid, control the glass fibre solid webbing with a thickness of the ultraviolet light cross-linking
The 1/4~1/2 of the thickness of polyethylene layer；
B) then by glass fibre solid webbing without putting up the interior graphene gel coating band made from the step 1)
On the outer surface of shielded layer；
C) then the insulating material of polyethylene being kneaded is extruded in the outer surface of glass fibre solid webbing wrapping layer
On, the insulating material of polyethylene of molten state is pressed into the three-dimensional grid in glass fibre solid webbing during extruding
In, glass fibre solid webbing is extruded in the insulating material of polyethylene for being immersed in molten state during extruding；
D) subsequently into progress ultraviolet light cross-linking processing in ultraviolet light irradiation cross-linking device；
E) it is then cooled down, ultraviolet light cross-linking polyethylene layer is made after the completion of cooling.
This application provides a kind of power cable of interior containing graphene shielded layer, the copper including being sequentially arranged from inside to outside is led
Body, interior graphene gel coating band shielded layer, insulating layer, outer graphene gel coating band shielded layer, copper strip shielding layer, inner sheath, steel
Band armor and oversheath；Present invention also provides a kind of preparation sides of the power cable of above-mentioned interior containing graphene shielded layer
Method；
The interior graphene gel coating band shielded layer and outer graphene gel coating band shielded layer are by graphene gel coating
Lapping structure layer with wrapped formation, both for semiconductive shielding layer, the graphene gel coating band includes insulating tape and applies
The graphene gel coating being overlying on two surfaces of the insulating tape；
Graphene glue includes the component of following mass percent in the application: 4.0%~8.0% Graphene powder, and 23%
~27.5% adhesive, 1.5%~2.5% fatty alcohol polyoxyethylene ether, the water of surplus；Graphene glue is coated in insulation
On two length and width surfaces of band, above-mentioned graphene gel coating band is made, utilizes the good electric conductivity of graphene, thermal conductivity and high
Specific surface area, so that the volume resistivity of the graphene gel coating band is 1 × 10-5Ω cm hereinafter, sheet resistance 100 Ω with
Under, the effect of homogenizing electric field is improved, to substantially increase the operational safety of cable；
Interior graphene gel coating band shielded layer and outer graphene gel coating are formed with shielded layer is wrapped, and overlap rate is not less than
15%, and guarantee corrugationless, reduce the gap size between shielded layer and adjacent layer；
Using twisted annealed copper conductor, it is ensured that when cable conductor is twisted, the smooth impulse- free robustness of outer layer or protrusion, it is ensured that cable
Conductor resistance is qualified；
Insulating layer uses cross-linked polyethylene insulating material, improves insulation performance and protective value.
Detailed description of the invention
Fig. 1 is a kind of lateral sectional structure of the power cable for interior containing graphene shielded layer that the embodiment of the present invention provides
Schematic diagram.
In figure: 1 copper conductor, graphene gel coating band shielded layer in 2,3 insulating layers, 4 outer graphene gel coatings with shielded layers,
5 copper strip shielding layers, 6 inner sheaths, 7 steel-tape armouring layers, 8 oversheaths.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " axial direction ", " radial direction ", " longitudinal direction ", " transverse direction ",
" length ", " width ", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside", " clockwise ", " inverse
The orientation or positional relationship of the instructions such as hour hands " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally
Invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.
Referring to Fig.1, Fig. 1 is a kind of transverse direction of the power cable for interior containing graphene shielded layer that the embodiment of the present invention provides
Schematic cross-sectional view.
Embodiment 1
This application provides a kind of power cables of interior containing graphene shielded layer, including copper conductor 1, interior graphene gel coating
Band shielded layer 2, insulating layer 3, outer graphene gel coating band shielded layer 4, copper strip shielding layer 5, inner sheath 6, steel-tape armouring layer 7 and
Oversheath 8；
The copper conductor 1, interior graphene gel coating band shielded layer 2, insulating layer 3, outer graphene gel coating band shielded layer 4,
Copper strip shielding layer 5, inner sheath 6, steel-tape armouring layer 7, oversheath 8 are sequentially arranged from inside to outside in the cable；
Shielded layer 2 is wrapped is coated with the copper conductor 1 for the interior graphene gel coating band, and the insulating layer 3 is coated with institute
State interior graphene gel coating band shielded layer 2, shielded layer 4 is wrapped is coated with the insulating layer 3, institute for the outer graphene gel coating band
State that copper strip shielding layer 5 is wrapped to be coated with the outer graphene gel coating band shielded layer 4, the inner sheath 6 extrude be coated with it is described
Copper strip shielding layer 5, the steel-tape armouring layer 7 is wrapped to be coated with the inner sheath 6, and the oversheath 8, which extrudes, is coated with the steel
Band armor 7；
The interior graphene gel coating band shielded layer 2 and outer graphene gel coating band shielded layer 4 are to be applied by graphene glue
Lapping structure layer of the layer with wrapped formation；
The graphene gel coating band includes that insulating tape is applied with the graphene glue on the outer surface coated on the insulating tape
Layer.
Embodiment 2
On the basis of the technical solution of embodiment 1, it is further preferred that the insulating tape is glass fiber tape, it is used for
Be woven into glass fiber tape per it is a branch of through to glass fiber strand in include 1~3 for by the insulating tape turn
Become the carbon fiber wire of semi-conductive tape, includes 1~3 in the glass fiber strand per a branch of broadwise in glass fiber tape
For the insulating tape to be changed into the carbon fiber wire of semi-conductive tape；
The essence of above-mentioned semiconductive shielding layer is that highly conductive filler is added in dielectric substrate, to improve dielectric substrate
Conductivity keeps its conductivity higher than the conductivity of insulator, but lower than the conductivity of conductor, makes its conductivity between insulator
Between conductor, dielectric substrate is transformed into semiconductive material by referred to as semiconduction；
According to the principle thinking, it is existing it is traditional be exactly carbon black first mixed with insulating resin extrude again made of shielded layer,
It is follow-on to be exactly, above-mentioned most carbon black is replaced with graphene, since the electric conductivity of graphene is much higher than carbon black, such as
This replaces the additive amount that can substantially reduce carbon black；
The application herein, continues according to above-mentioned principle thinking, glass fiber tape per it is a branch of through to glass fiber
Include 1~3 carbon fiber wire in beam, includes 1~3 in the glass fiber strand per a branch of broadwise in glass fiber tape
Carbon fiber wire, since carbon fiber wire has relatively high conduction and heating conduction, so that the insulating tape is changed into semiconductive
Band, along with graphene gel coating is also semiconductive, so that graphene gel coating band shielded layer 2 and outer graphite in entire
Alkene gel coating is all semiconductive from the inside to surface with shielded layer 4.
Embodiment 3
On the basis of the technical solution of embodiment 1, it is further preferred that steel band in the steel-tape armouring layer 7 is interior
Several are coated on surface in the spaced apart mirror surface silverskin of striated, the length direction and the steel of every mirror surface silverskin
The length direction of band is parallel；
In the application, the heat that the energization of copper conductor 1 generates mainly is transmitted with heat transfer and heat radiation, and heat radiation
Heat accounts for copper conductor 1 and is powered 50% or so of total quantity of heat production, and proportion is very big, if taken no action to, there is significant proportion
Heat can be transmitted in the atmospheric environment except cable in a manner of heat radiation, to cable cannot keep the temperature freeze proof, be got not
Easy heat will slattern easily, for this purpose, being provided with the steel band with mirror surface silverskin herein, utilize the mirror surface of mirror surface silverskin
Reflection function reflects back heat radiation heat, stops heat to be radiated in the atmospheric environment except cable, will be passed with heat radiation
The heat passed is stored in the inside of cable always；Furthermore the mirror surface silverskin is located within oversheath 8, if the mirror surface on steel band
Silverskin all reflects back most heat, that just can not effectively heat oversheath 8 freeze proof, cause in cable
Heat is outer cold, still unbearable severe cold, for this purpose, mirror surface silverskin is arranged to several in striated arranged for interval, phase by the application
It is the original steel strip surface for being not provided with coating between adjacent two mirror surface silverskin, heat radiation is extended there through, so that
Above-mentioned steel band part reflective thermal radiation, fractional transmission heat radiation, the area for rationally controlling mirror surface silverskin account for length and width face in steel band
The ratio of area so that heat not only can as often as possible be stored in the inside of cable, but also can carry out oversheath 8 sufficiently enough
Heating it is freeze proof so that the cable have preferable resistance to low temperature；
Herein the mirror surface silverskin on the steel band inner surface in steel-tape armouring layer 7 the preparation method comprises the following steps: by certain amount silver ammonia
Complex solution and aldehydes solution as reducing agent, which are poured on the interior length and width surface of steel band in striated arranged for interval, to carry out
Silver mirror reaction, it is in the spaced apart mirror-like silver of striated that silver ion, which is reduced on the interior length and width surface for be deposited on steel band and is formed a plurality of,
Film.
Embodiment 4
On the basis of the technical solution of embodiment 1, it is further preferred that the copper conductor 1 is that twisted annealed copper is led
Body 1.
Embodiment 5
Cross-linking reaction refers to 2 or more molecule (generally linear molecule) is mutually bonded and is cross-linked into network structure
The reaction of more stable molecule (figure molecule).This reaction makes line style or the macromolecular of slight branched chain type be transformed into three-dimensional netted knot
Structure can be used for foaming or not foaming product so as to improve performances such as intensity, heat resistance, wearability, solvent resistances.
Crosslinked polyethylene is to utilize chemically or physically, and polyethylene molecule is made to become three-dimensional from linear molecular structure
Reticular structure becomes thermosetting material by thermoplastic material, and operating temperature is increased to 90 DEG C from 70 DEG C, significantly improves material
Energy.Polyethylene (PE) crosslinking technological is to improve one of the important means of its material property.It can make its property by cross-linking modified PE
Can significantly it be improved, the mechanical property, environmental stress cracking resistance, chemical-resistant resistance for not only significantly improving fourth PE are rotten
The comprehensive performances such as corrosion energy, creep resistance and electrical property, and be readily apparent that improve temperature resistant grade, the heat-resisting temperature of PE can be made
Degree is increased to 100 DEG C or more from 70 DEG C, to widen the application field of PE significantly.The cross-linking method of polyethylene has physical crosslinking
(crosslinking with radiation) and two kinds of chemical crosslinking.Chemical crosslinking is divided into crosslinked with silicane, peroxide crosslinking again.
Cross-linked polyethylene insulated cable is to make cable insulation polyethylene molecule by linear using chemically or physically
Molecular structure is changed into main body network molecular structure, i.e., thermoplastic polyethylene is changed into heat cured crosslinked polyethylene, thus
The heat resistance and mechanical performance for greatly improving it, reduce its shrinkage, make its not re-melting of being heated later, and maintain excellent
Good electric property.Cross-linked polyethylene insulated cable is a kind of cable suitable for fields such as power distribution networks, has PVC insulated cable
Incomparable advantage.Its structure it is simple, light-weight, heat-resisting it is good, load capacity is strong, non-fusible, resistant to chemical etching, mechanical strength
It is high.
Glass fibre is a kind of inorganic non-metallic material haveing excellent performance, many kinds of, and advantage is good insulating, heat resistance
By force, corrosion resistance is good, high mechanical strength, but the disadvantage is that property is crisp, wearability is poor.It is pyrophillite, quartz sand, lime stone, white
Seven kinds of marble, bechilite, boromagnesite ores are raw material through caused by the techniques systems such as high temperature melting, wire drawing, doff, woven fabric, list
The diameter of silk is several microns to twenties microns, is equivalent to the 1/20-1/5 of a hairline, every bundle fiber precursor all by
Hundreds of even thousands of monofilament compositions.Glass fibre is typically used as the reinforcing material in composite material, electrically insulating material and absolutely
Hot thermal insulation material, the national economy every field such as circuit substrate.Glass is kind of noncrystal, the fusing point that it is not fixed, generally
The softening point for thinking glass fibre is 500-750 DEG C, and boiling point is 1000 DEG C.Glass fibre presses form and length, can be divided into continuous
Fiber, staple fibre and mineral wool；By glass ingredient, alkali-free, chemically-resistant, high-alkali, middle alkali, high intensity, high resiliency mould can be divided into
Amount and alkaline-resisting (alkali resistant) glass fibre etc..The fiber for the endless that platinum alloy plate is drawn with mechanical drawing process, referred to as continuous glass
Glass fiber is generally called long fibre or long filament.The discontinuous fiber made of roller or air-flow, referred to as staple glass fibre, common name
Staple fiber.Glass fabric be with the woven various glass fabrics of glass fiber yarn, specifically include glass fabric,
Glass tape, one-way fabric, stereo fabric, profiled fabrics, glass fiber insulating sleeve etc..
Carrying out cross-linking reaction to polyethylene is that polyethylene molecule is become three-dimensional from linear molecular structure on molecular level
Reticular structure, since it is so, that the application continue thinking like this, carry out secondary hardening to polyethylene from macroscopic aspect, for this purpose,
The insulating layer is ultraviolet light cross-linking polyethylene layer, and pre-buried be embedded with has in the ultraviolet light cross-linking polyethylene layer
The glass fibre solid webbing of three-dimensional grid；
The glass fibre solid webbing is preparatory before the ultraviolet light cross-linking polyethylene layer extrudes molding
On outer surface of the interior graphene gel coating with shielded layer, the ultraviolet light cross-linking polyethylene layer it is fully wrapped around institute
Glass fibre solid webbing is stated, it is poly- that ultraviolet light cross-linking is filled in the three-dimensional grid of the glass fibre solid webbing
Ethylene Insulation Material is being extruded between the glass fibre solid webbing and the ultraviolet light cross-linking polyethylene layer
The hot-melt adhesive paste formed during type.
Embodiment 6
A kind of preparation method of the power cable of above-mentioned interior containing graphene shielded layer, the step carried out including next coming in order
It is rapid:
1) interior graphene gel coating band shielded layer 2 is made by wrapped graphene gel coating band on copper conductor 1；
2) insulating layer 3 is made by coating on interior outer surface of the graphene gel coating with shielded layer 2 made from step 1)；
3) outer graphene glue is made by wrapped graphene gel coating band on the outer surface of insulating layer 3 made from step 2)
Coated tape shielded layer 4；
4) copper strips is made by wrapped copper strips on outer outer surface of the graphene gel coating with shielded layer 4 made from step 3)
Shielded layer 5；
5) by extruding obtained inner sheath 6 on the outer surface of copper strip shielding layer 5 made from step 4)；
6) steel-tape armouring layer 7 is made by wrapped steel band on the outer surface of inner sheath 6 made from step 5)；
7) it by extruding obtained oversheath 8 on the outer surface of steel-tape armouring layer 7 made from step 6), is made after the completion interior
The power cable of containing graphene shielded layer.
Embodiment 7: the graphene glue for preparing graphene gel coating includes the component of following mass percent: 4.0%~
8.0% Graphene powder, 23%~27.5% adhesive, 1.5%~2.5% fatty alcohol polyoxyethylene ether, the water of surplus；
Graphene glue is coated on two length and width surfaces of insulating tape, graphene glue is made after graphene adhesive curing and applies
Layer band.
Embodiment 8, in above-mentioned preparation method, the insulating layer 3 is ultraviolet light cross-linking polyethylene layer, the ultraviolet light
The pre-buried glass fibre solid webbing being embedded with three-dimensional grid in crosslinked polyetylene insulated layer；
The glass fibre solid webbing is preparatory before the ultraviolet light cross-linking polyethylene layer extrudes molding
On interior outer surface of the graphene gel coating with shielded layer 2, the ultraviolet light cross-linking polyethylene layer is fully wrapped around
The glass fibre solid webbing is filled with ultraviolet light cross-linking in the three-dimensional grid of the glass fibre solid webbing
Insulating material of polyethylene is extruding between the glass fibre solid webbing and the ultraviolet light cross-linking polyethylene layer
The hot-melt adhesive paste formed in forming process；
The preparation method of the ultraviolet light cross-linking polyethylene layer includes the steps that next coming in order carry out:
A) glass fibre is spun into glass fiber yarn first, being then woven into the glass fiber yarn has three-dimensional
The glass fibre solid webbing of grid, control the glass fibre solid webbing with a thickness of the ultraviolet light cross-linking
The 1/4~1/2 of the thickness of polyethylene layer；
B) then by glass fibre solid webbing without putting up the interior graphene gel coating band made from the step 1)
On the outer surface of shielded layer 2；
C) then the insulating material of polyethylene being kneaded is extruded in the outer surface of glass fibre solid webbing wrapping layer
On, the insulating material of polyethylene of molten state is pressed into the three-dimensional grid in glass fibre solid webbing during extruding
In, glass fibre solid webbing is extruded in the insulating material of polyethylene for being immersed in molten state during extruding；
D) subsequently into progress ultraviolet light cross-linking processing in ultraviolet light irradiation cross-linking device；
E) it is then cooled down, ultraviolet light cross-linking polyethylene layer is made after the completion of cooling.
Glass fibre is first processed into glass fiber yarn by the present invention, and being then woven into the glass fiber yarn has
The glass fibre solid webbing of three-dimensional grid, by spinning and braiding, by glass that is loose, not connecting between each other
Fiber process is woven into certain length, width and height, 3 D stereo, shape at glass fiber yarn, then by glass fiber yarn
In glass fibre stereo fabric that is band-like, being made of many rectangular parallelepiped grids, so that be connected with each other between glass fibre, so that
Glass fibre solid webbing can preferably serve as the enhancing support frame that crosslinked polyethylene extrudes layer, improve insulating layer
3 service performance and service life, enhancing principle be similar to armored concrete, armored concrete in order to enhance performance,
The not instead of loose steel fibre of a pile, the reinforcing bar with label diameter, further, these reinforcing bars are in concrete
Nor it is mutually independent one by one, do things in his own way, but reinforcing bar and reinforcing bar are connected with each other binding at having three-dimensional grid
3 D stereo steel reinforcement cage, to make the most of the excellent performance of this material of steel and maximumlly improve concrete
Performance, the above-mentioned glass fibre solid webbing with three-dimensional grid is equivalent in armored concrete in the application
Steel reinforcement cage, above-mentioned ultraviolet light cross-linking polyethylene layer is equivalent to the concrete in armored concrete, to make full use of
The excellent performance of glass fibre, improves the service performance and service life of insulating layer 3.
This application provides a kind of power cable of interior containing graphene shielded layer, the copper including being sequentially arranged from inside to outside is led
Body 1, interior graphene gel coating band shielded layer 2, insulating layer 3, outer graphene gel coating band shielded layer 4, copper strip shielding layer 5, interior shield
Set 6, steel-tape armouring layer 7 and oversheath 8；Present invention also provides a kind of power cables of above-mentioned interior containing graphene shielded layer
Preparation method；
The interior graphene gel coating band shielded layer 2 and outer graphene gel coating band shielded layer 4 are to be applied by graphene glue
Lapping structure layer of the layer with wrapped formation, both for semiconductive shielding layer, the graphene gel coating band include insulating tape with
Coated on the graphene gel coating on two surfaces of the insulating tape；
Graphene glue includes the component of following mass percent in the application: 4.0%~8.0% Graphene powder, and 23%
~27.5% adhesive, 1.5%~2.5% fatty alcohol polyoxyethylene ether, the water of surplus；Graphene glue is coated in insulation
On two length and width surfaces of band, above-mentioned graphene gel coating band is made, utilizes the good electric conductivity of graphene, thermal conductivity and high
Specific surface area, so that the volume resistivity of the graphene gel coating band is 1 × 10-5Ω cm hereinafter, sheet resistance 100 Ω with
Under, the effect of homogenizing electric field is improved, to substantially increase the operational safety of cable；
Interior graphene gel coating band shielded layer 2 and outer graphene gel coating are formed with shielded layer 4 is wrapped, and overlap rate is not less than
15%, and guarantee corrugationless, reduce the gap size between shielded layer and adjacent layer；
Using twisted annealed copper conductor 1, it is ensured that when cable conductor is twisted, the smooth impulse- free robustness of outer layer or protrusion, it is ensured that electricity
Cable conductor resistance is qualified；
Insulating layer 3 uses cross-linked polyethylene insulating material, improves insulation performance and protective value.
The method and apparatus of the not detailed description of the present invention are the prior art, are repeated no more.
Principle and implementation of the present invention are described for specific embodiment used herein, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for art personnel, these change
It is also fallen within the protection scope of the claims of the present invention into modification.
Claims (8)
1. a kind of power cable of interior containing graphene shielded layer, which is characterized in that including copper conductor, interior graphene gel coating band screen
Cover layer, insulating layer, outer graphene gel coating band shielded layer, copper strip shielding layer, inner sheath, steel-tape armouring layer and oversheath；
The copper conductor, interior graphene gel coating band shielded layer, insulating layer, outer graphene gel coating band shielded layer, copper strip shielding
Layer, inner sheath, steel-tape armouring layer and oversheath are sequentially arranged from inside to outside in the cable；
Shielded layer is wrapped is coated with the copper conductor for the interior graphene gel coating band, and the insulating layer is coated with the interior graphite
Alkene gel coating band shielded layer, shielded layer is wrapped is coated with the insulating layer, the copper strip shielding for the outer graphene gel coating band
Layer is wrapped to be coated with the outer graphene gel coating band shielded layer, and the inner sheath, which extrudes, is coated with the copper strip shielding layer, institute
State that steel-tape armouring layer is wrapped to be coated with the inner sheath, the oversheath, which extrudes, is coated with the steel-tape armouring layer；
The interior graphene gel coating band shielded layer and outer graphene gel coating band shielded layer be by graphene gel coating band around
Wrap the lapping structure layer formed；
The graphene gel coating band includes insulating tape and the graphene gel coating on the outer surface coated on the insulating tape.
2. the power cable of interior containing graphene shielded layer according to claim 1, which is characterized in that the insulating tape is glass
Glass fiber band, for be woven into glass fiber tape per it is a branch of through to glass fiber strand in include 1~3 for will
The insulating tape is changed into the carbon fiber wire of semi-conductive tape, wraps in the glass fiber strand per a branch of broadwise in glass fiber tape
Containing 1~3 for the insulating tape to be changed into the carbon fiber wire of semi-conductive tape.
3. the power cable of interior containing graphene shielded layer according to claim 1, which is characterized in that the steel-tape armouring layer
In steel band inner surface on be coated with several in the spaced apart mirror surface silverskin of striated, the length of every mirror surface silverskin
Direction is parallel with the length direction of the steel band.
4. the power cable of interior containing graphene shielded layer according to claim 1, which is characterized in that the copper conductor is to twist
Close annealed copper conductor.
5. the power cable of interior containing graphene shielded layer according to claim 1, which is characterized in that the insulating layer is purple
Outer photo crosslinked polyethylene insulating layer, it is pre-buried in the ultraviolet light cross-linking polyethylene layer to be embedded with the glass with three-dimensional grid
Fiber solid webbing；
The glass fibre solid webbing is wrapped in advance before the ultraviolet light cross-linking polyethylene layer extrudes molding
On outer surface of the interior graphene gel coating with shielded layer, the ultraviolet light cross-linking polyethylene layer it is fully wrapped around the glass
Glass fiber solid webbing is filled with ultraviolet light cross-linking polyethylene in the three-dimensional grid of the glass fibre solid webbing
Insulation Material formed between the glass fibre solid webbing and the ultraviolet light cross-linking polyethylene layer extruding
The hot-melt adhesive paste formed in journey.
6. a kind of preparation method of the power cable of interior containing graphene shielded layer described in claim 1, which is characterized in that including
The step of next coming in order carry out:
1) interior graphene gel coating band shielded layer is made by wrapped graphene gel coating band on copper conductor；
2) insulating layer is made by coating on outer surface of the interior graphene gel coating with shielded layer made from step 1)；
3) outer graphene gel coating is made by wrapped graphene gel coating band on the outer surface of the insulating layer made from step 2)
Band shielded layer；
4) copper strip shielding is made by wrapped copper strips on outer surface of the outer graphene gel coating with shielded layer made from step 3)
Layer；
5) by extruding obtained inner sheath on the outer surface of copper strip shielding layer made from step 4)；
6) steel-tape armouring layer is made by wrapped steel band on the outer surface of the inner sheath made from step 5)；
7) by extruding obtained oversheath on the outer surface of steel-tape armouring layer made from step 6), interior graphitiferous is made after the completion
The power cable of alkene shielded layer.
7. preparation method according to claim 6, which is characterized in that prepare graphene gel coating graphene glue include with
The component of lower mass percent: 4.0%~8.0% Graphene powder, 23%~27.5% adhesive, 1.5%~2.5%
Fatty alcohol polyoxyethylene ether, the water of surplus；
Graphene glue is coated on two length and width surfaces of insulating tape, graphene gel coating is made after graphene adhesive curing
Band.
8. preparation method according to claim 6, which is characterized in that the insulating layer is ultraviolet light cross-linking polyethylene insulation
Layer, the pre-buried glass fibre solid webbing being embedded with three-dimensional grid in the ultraviolet light cross-linking polyethylene layer；
The glass fibre solid webbing is wrapped in advance before the ultraviolet light cross-linking polyethylene layer extrudes molding
On outer surface of the interior graphene gel coating with shielded layer, the ultraviolet light cross-linking polyethylene layer it is fully wrapped around the glass
Glass fiber solid webbing is filled with ultraviolet light cross-linking polyethylene in the three-dimensional grid of the glass fibre solid webbing
Insulation Material formed between the glass fibre solid webbing and the ultraviolet light cross-linking polyethylene layer extruding
The hot-melt adhesive paste formed in journey；
The preparation method of the ultraviolet light cross-linking polyethylene layer includes the steps that next coming in order carry out:
A) glass fibre is spun into glass fiber yarn first, then the glass fiber yarn is woven into three-dimensional grid
Glass fibre solid webbing, control the glass fibre solid webbing with a thickness of the poly- second of the ultraviolet light cross-linking
The 1/4~1/2 of the thickness of alkene insulating layer；
B) then glass fibre solid webbing is shielded without the interior graphene gel coating band made from the step 1) is put up
On the outer surface of layer；
C) then the insulating material of polyethylene being kneaded is extruded on the outer surface of glass fibre solid webbing wrapping layer, is melted
The insulating material of polyethylene for melting state is pressed into the three-dimensional grid in glass fibre solid webbing during extruding, glass
Glass fiber solid webbing is extruded in the insulating material of polyethylene for being immersed in molten state during extruding；
D) subsequently into progress ultraviolet light cross-linking processing in ultraviolet light irradiation cross-linking device；
E) it is then cooled down, ultraviolet light cross-linking polyethylene layer is made after the completion of cooling.
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