CN109192366B - High-strength enameled wire and preparation method of conducting layer thereof - Google Patents
High-strength enameled wire and preparation method of conducting layer thereof Download PDFInfo
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- CN109192366B CN109192366B CN201811127828.8A CN201811127828A CN109192366B CN 109192366 B CN109192366 B CN 109192366B CN 201811127828 A CN201811127828 A CN 201811127828A CN 109192366 B CN109192366 B CN 109192366B
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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
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
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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
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
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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
- H01B7/17—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
- H01B7/184—Sheaths comprising grooves, ribs or other projections
Abstract
The invention discloses a high-strength enameled wire and a preparation method of a conducting layer thereof, the high-strength enameled wire comprises a conducting core layer, a reinforcing composite layer is arranged on the surface of the conducting core layer, an insulating paint layer is arranged on the surface of the reinforcing composite layer, the conducting core layer comprises an aluminum core layer and a nano silver-copper alloy coating layer arranged on the outer wall of the aluminum core layer, a tensile coating layer is arranged on the outer surface of the nano silver-copper alloy coating layer, a galvanized second copper layer is arranged on the outer surface of the tensile coating layer, filling concave points are uniformly distributed on the surface of the galvanized second copper layer, a reinforcing composite layer body protrudes to form convex points which are embedded in the filling concave points and coated on the surface of the galvanized second copper layer, the conducting layer is prepared by smelting a conducting alloy, rolling and stretching are carried out to obtain an aluminum wire which is spirally wound into a regular conducting core wire, and a series of functional layers, more importantly, the strength and the conductivity of the enameled wire are improved by changing the structure of the conductive core layer.
Description
Technical Field
The invention relates to the technical field of enameled wires, in particular to a high-strength enameled wire and a preparation method of a conducting layer thereof.
Background
The enameled wire is an important accessory of electrical equipment, is composed of a conductor and a plurality of layers of insulating paint coated on the conductor, brings wide market prospect to the enameled wire with continuous and rapid development of the social power industry, and has higher requirement on the enameled wire, the traditional enameled wire mainly comprises a copper wire body and a paint layer, the enamel wire of such a structure is generally too simple in structure to take the influence of environmental factors into consideration, and in some special fields, generally during installation and practical use, more or less enameled wires need to be bent and pulled, and if a large-scale product is manufactured by using the enameled wires, the phenomenon of equipment desensitization, short circuit and the like can be caused by the bending condition of the wire body, the large-scale structural product is complex in structure, time and labor are consumed in the dismounting and maintenance process, and the damaged enameled wire can bring serious consequences.
The invention discloses an insulated composite aluminum enameled wire with the application number of 201410465691.2, which is mainly designed by combining a conductor, a composite paint film layer, a teflon belting and a nylon modified glass fiber layer, has the advantages of easily available raw materials and simple operation, can be prepared on general equipment relative to an extruded teflon enameled wire without specially adding a high-temperature extruder, is easy to industrialize, has high insulated voltage of three-layer insulated enameled wires, can save an insulated adhesive tape and an insulated interlayer due to superior wear resistance of the composite nylon of an outer sheath, provides possibility for high-speed automatic winding, has high insulated voltage, can save the insulated adhesive tape and the insulated interlayer, adopts three-layer insulated protection, and has no pinhole phenomenon.
In the prior art, the insulating property, the conducting property and the strength property of the enameled wire are mainly improved, although the insulating property is solved, the improvement of the conducting property cannot be considered, and the conventional performance improvement cannot meet the requirement along with the increasing social requirements and requirements. In the prior art, the conductivity is generally solved by a copper-clad aluminum or silver plating mode, and the conductivity is further improved on the two processes, so that the conductivity cannot be substantially improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the high-strength enameled wire and the preparation method of the conducting layer thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a high strength enameled wire, includes electrically conductive sandwich layer the surface of electrically conductive sandwich layer is equipped with strengthens the composite bed the surface of strengthening the composite bed is equipped with the insulating varnish layer, electrically conductive sandwich layer includes the aluminium sandwich layer to and locate the nanometer silver-copper alloy coating of aluminium sandwich layer outer wall the surface of nanometer silver-copper alloy coating be equipped with the tensile coating surface be equipped with zinc-plated second copper layer the surface evenly distributed on zinc-plated second copper layer has a plurality of concave points of packing, it is in to strengthen the outstanding bump gomphosis that forms of composite bed body fills in the concave point, and closely the cladding is in the surface on zinc-plated second copper layer.
Further, the aluminum core layer is formed by twisting a plurality of aluminum wires into a regular long cylindrical shape, and the nano silver-copper alloy coating completely fills fine grooves formed on the surface of the aluminum core layer by twisting.
Further, the preparation method of the nano silver-copper alloy coating comprises the following steps:
firstly, taking a conductive glass plate as a cathode and a silver plate as an anode, and arranging a hollow groove column for placing an aluminum core layer between the anode and the cathode;
then, preparing electrolyte, adding the electrolyte into the hollow groove column, and placing the aluminum core layer in the hollow groove column to ensure that the aluminum core layer is completely immersed in the electrolyte;
setting a deposition potential of-1.2V, performing deposition at room temperature, rotating the aluminum core layer while depositing, and forming a nano silver-copper alloy coating on the surface of the aluminum core layer by using the nano silver-copper alloy formed by electrodeposition.
Further, the preparation of the electrolyte: 30ml of secondary deionized water was added to the beaker followed by 0.0185g of silver nitrate and 0.0125g of Cu (NO)3)2 .3H2And O, stirring uniformly by using a glass rod.
Furthermore, the tensile coating layer is formed by spirally winding a plurality of carbon fiber wires on the surface of the nano silver-copper alloy coating layer in a clockwise and anticlockwise mode.
Furthermore, the reinforced composite layer comprises a sol layer, salient points formed by the sol layer are embedded in the filling concave points, and a reinforced mesh layer is woven on the sol layer by adopting high-strength reinforced wires.
Further, the forming method of the reinforced composite layer comprises the following steps: firstly weaving a reinforced mesh wire layer on the surface of the galvanized second copper layer by using high-strength reinforced wires, then adding liquid sol on the surface of the reinforced mesh wire layer, and forming a sol layer by extrusion cooling.
In addition, the invention also designs a preparation method of the high-strength enameled wire conducting layer, which comprises the following steps:
step 100, smelting a conductive alloy, and rolling and stretching to obtain an aluminum wire with a required specification;
step 200, spirally winding and twisting an aluminum wire into a conductive core wire with a regular shape;
step 300, forming a conductive auxiliary layer on the surface of the conductive core wire in an electrolytic mode;
400, weaving high-strength fibers on the surface of the conductive auxiliary layer to form a tensile coating layer for improving tensile property and preventing the conductive core wire from being broken;
and 500, weaving the surface of the tensile coating layer to form a composite layer with an antirust function and an enhanced strength.
Further, the conductive auxiliary layer is a nano silver-copper alloy coating, and the nano silver-copper alloy coating is formed on the conductive glass plate by dropwise adding electrolyte for electrolysis.
Furthermore, the composite layer is formed by firstly adding a galvanized copper layer on the tensile coating layer in an electrolytic mode and then weaving the reinforcing wires on the surface of the galvanized copper layer.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to an enameled wire, which is characterized in that a reinforcing composite layer is additionally arranged between the surface of a conductive core layer and an insulating paint layer, the strength of the enameled wire is enhanced only by reinforcing the composite layer, more importantly, the strength and the conductivity of the enameled wire are improved by changing the structure of the conductive core layer, and a nano silver-copper alloy coating is arranged on the outer wall of the conductive core layer, so that the advantages of a copper-clad aluminum wire and the high conductivity of a silver-plated copper wire are combined, and compared with the two modes of the copper-clad aluminum wire and the silver-plated copper wire in the prior art, the defects of the two prior.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the enamel layer of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1, the present invention provides a high-strength enameled wire, which includes a conductive core layer 1, wherein a reinforcing composite layer 2 is disposed on a surface of the conductive core layer 1, an insulating paint layer 3 is disposed on a surface of the reinforcing composite layer 2, the conductive core layer 1 includes an aluminum core layer 101, and a nano silver-copper alloy coating layer 102 disposed on an outer wall of the aluminum core layer 101, a tensile coating layer 103 is disposed on an outer surface of the nano silver-copper alloy coating layer 102, a galvanized second copper layer 104 is disposed on an outer surface of the tensile coating layer 103, a plurality of filling concave points are uniformly distributed on a surface of the galvanized second copper layer 104, and a body of the reinforcing composite layer 2 protrudes to form protruding points which are embedded in the filling concave points and tightly cover a surface of the galvanized second copper layer 104.
The enameled wire with the structure aims to meet the requirements of the prior art on the strength and the wire performance of the enameled wire, the reinforced composite layer 2 is additionally arranged between the surface of the conductive core layer 1 and the insulating paint layer 3 of the enameled wire, the strength of the enameled wire is increased, the enameled wire is only increased by the reinforced composite layer 2, more importantly, the strength and the conductive performance of the enameled wire are improved by changing the structure of the conductive core layer 1, and the specific action mechanism is as follows:
the conductive core layer 1 adopts a conventional aluminum core layer as a central conductor layer, but the outer wall of the conductive core layer 1 is provided with the nano silver-copper alloy coating 102, so that the advantages of a copper-clad aluminum wire and the high conductivity of a silver-plated copper wire are combined, and compared with the two modes of the copper-clad aluminum wire and the silver-plated copper wire in the prior art, the conductive core layer has the advantages of more outstanding performance and capability of solving the defects of the two prior art.
Firstly, although the conductivity of the copper-clad aluminum wire and the weldability of the enameled wire are enhanced, the conductivity of the aluminum wire is about 2-third of that of the copper wire, so that the copper-clad aluminum wire is not greatly increased in conductivity and poor in thermal conductivity, corrosion resistance and oxidation resistance;
secondly, although the mode of the silver-plated copper wire is adopted, the cost of copper and silver is more expensive than that of an aluminum wire, the silver-plated layer of the silver-plated copper wire is easy to chemically react with substances such as hydrogen sulfide in the air, the silver layer becomes dark and blackens to generate products such as silver sulfide, the silver sulfide not only affects the surface appearance of the silver layer, but also seriously affects the welding performance of the product and signal transmission in a high-frequency radio-frequency cable, and the surface resistance of the silver layer can be increased seriously under the condition of serious exposure and high temperature in the air, and in addition, the problem that the silver layer is greatly affected by light and high temperature in the air can be solved only by adopting certain measures on the surface of the silver-plated copper wire.
The nano silver-copper alloy coating 102 added in the embodiment is used as a coating, the usage amount of silver and copper is far less than that of a silver-plated copper wire, the cost is low, high conductivity and various excellent physical properties and chemical properties can be met, and the nano silver-copper alloy coating has a nano effect, which is a property which cannot be compared with the existing copper-clad aluminum wires and silver-plated copper wires.
In this embodiment, the preparation method of the nano silver-copper alloy coating 102 is as follows:
firstly, taking a conductive glass plate as a cathode and a silver plate as an anode, and arranging a hollow groove column for placing an aluminum core layer 101 between the anode and the cathode;
then, preparing electrolyte, adding the electrolyte into the hollow groove column, and placing the aluminum core layer 101 into the hollow groove column to ensure that the aluminum core layer 101 is completely immersed in the electrolyte;
setting a deposition potential of-1.2V, performing deposition at room temperature, rotating the aluminum core layer 101 while depositing, and enabling the nano silver-copper alloy formed by electrodeposition to form a nano silver-copper alloy coating 102 on the surface of the aluminum core layer 101.
In order to facilitate the rotation of the aluminum core layer 101, mechanical automation equipment can be matched with two ends of the aluminum core layer 101, so that the aluminum core layer can rotate in the hollow grooved column at a set rotating speed.
In order to facilitate mass production of the aluminum core layer 101 with the nano silver-copper alloy, a pulling force can be applied to the aluminum core layer 101 at regular time by setting mechanical automation equipment, namely pulling the aluminum core layer 101 with the nano silver-copper alloy coating 102 formed thereon out of a hollow groove column from one end, and placing the aluminum core layer 101 without the nano silver-copper alloy coating 102 formed thereon in an electrolyte of the hollow groove column.
In order to make the copper alloy coating 102 more easily adhere to the surface of the aluminum core layer 101, a weak current may be applied to the aluminum core layer 101.
The nano silver-copper alloy coating 102 prepared by the method has a nano effect, and the nano silver-copper alloy is grown under constant potential by adopting an electrosynthesis method and taking a conductive glass plate as a negative electrode and a silver plate as an anode, and is slowly adsorbed on the aluminum core layer 101 under the action of weak current and rotation of the aluminum core layer 101.
In this embodiment, the aluminum core layer 101 is formed by twisting a plurality of aluminum wires into a regular long cylindrical shape, and the nano silver-copper alloy coating layer 102 completely fills fine grooves formed on the surface of the aluminum core layer 101 by twisting, the grooves being gaps formed between the twisted aluminum wires and irregular surfaces.
Preparing an electrolyte: 30ml of secondary deionized water was added to the beaker followed by 0.0185g of silver nitrate and 0.0125g of Cu (NO)3)2 .3H2And O, stirring uniformly by using a glass rod.
In this embodiment, the tensile coating layer 103 is formed by sequentially spirally winding a plurality of carbon fiber wires on the surface of the silver-copper alloy nano-coating 102 clockwise and counterclockwise, specifically, the plurality of carbon fiber wires may be spirally wound on the surface of the silver-copper alloy nano-coating 102 clockwise, the carbon fiber wires are embedded into the outer surface of the silver-copper alloy nano-coating 102 slightly, then the carbon fiber wires with the same number are spirally wound on the surface of the silver-copper alloy nano-coating 102 counterclockwise, and the tensile coating layer 103 is formed by being crossed with the carbon fiber wires spirally wound clockwise and tightly attached to the surface of the silver-copper nano-coating 102.
The tensile coating layer 103 formed in this way perfectly coats the nano silver-copper alloy coating 102, and the carbon fiber filaments are embedded into the outer surface of the nano silver-copper alloy coating 102 in a tiny manner, so that the nano silver-copper alloy coating 102 has the characteristics of tensile resistance and high strength of the tensile coating layer 103, and is not easy to break.
Wherein, the carbon fiber wire can be spirally wound on the surface of the nano silver-copper alloy coating 102 by mechanical equipment after the nano silver-copper alloy coating is formed by electrolysis and before the nano silver-copper alloy coating is completely cooled and hardened.
In the present embodiment, the reinforced composite layer 2 also adopts the same action mechanism as the tensile coating layer, and includes a sol layer 201, wherein the sol layer 201 forms convex points to be embedded in the filling concave points, and a reinforced mesh layer 202 is woven on the sol layer 201 by using high-strength reinforced filaments; firstly, high-strength reinforcing wires are woven on the surface of the galvanized second copper layer 104 to form a reinforcing mesh wire layer 202, then liquid sol is added on the surface of the reinforcing mesh wire layer 202, and the sol layer 201 is formed through extrusion and cooling.
The number of layers of the reinforcing wire can be adjusted according to the strength requirement, namely, the reinforcing wire is single-layer or multi-layer, and the reinforcing wire material is carbon fiber wire or aramid fiber wire or Kevlar cloth.
The reinforcing composite layer 2 formed in the mode has extremely high strength, and has higher stability and tensile resistance compared with structures such as reinforcing ribs directly added in the prior art, so that the whole enameled wire has higher strength.
As shown in fig. 2, the insulating paint layer 3 includes a polyurethane fiber paint coating 301, a polyamide-imide paint coating 302, a polyester resin fiber paint coating 303, an aramid fiber woven layer 304 and a mica tape wrapping layer 305, which are sequentially disposed, and the modified polyurethane fiber paint coating 301 is coated on the conductive core layer 1.
In this embodiment, a polyurethane fiber paint coating, a polyamide-imide paint coating and a polyester resin fiber paint coating are mainly used as the insulating part, and compared with the existing common polyurethane or polyester resin material as the insulating part, the polyamide-imide paint coating is mainly used as the intermediate layer of the insulating part, and the polyamide-imide paint coating is used as the intermediate layer of the insulating part, and the aromatic heterocyclic group with heat resistance and the amide group with flexibility are combined, so that the insulating part has excellent heat resistance, dielectric property, mechanical property and stable chemical and physical property, although the polyurethane or polyester resin paint coating also has insulating property and is a common enameled wire insulating paint, such an insulating layer lacks heat resistance and stable property, and a material layer structure for increasing heat resistance is generally required to be added to the enameled wire The polyester resin fiber paint coating is combined as an insulating paint coating, and the chemical or physical properties of the coating are greatly improved.
The preparation method of the polyamide-imide paint coating comprises the following steps:
step 100, preparing an imide prepolymer solution;
firstly, sequentially adding N-methyl pyrrolidone and trimellitic anhydride into a three-neck flask, slightly heating to dissolve the N-methyl pyrrolidone and the trimellitic anhydride, and then adding 4, 4' -diphenylmethane diisocyanate to carry out chemical reaction;
then, adjusting the initial temperature of the chemical reaction to be 70-90 ℃, and the reaction time to be 2-3 h;
and heating to 120-140 ℃ again to enable the trimellitic anhydride and the 4,4 '-diphenylmethane diisocyanate to react fully until the acid value is constant, adjusting the molar ratio of the trimellitic anhydride to the 4, 4' -diphenylmethane diisocyanate and keeping the solid content constant to obtain the imide prepolymer solution.
Step 200, preparing closed isocyanate;
adding N-methyl pyrrolidone, 4' -diphenylmethane diisocyanate and a sealing agent into a three-neck flask for reaction, and sampling every 20-40 minutes in the reaction process to detect the content of residual-NCO groups in the three-neck flask until the content is zero.
And step 300, uniformly stirring and mixing the same amount of imide prepolymer solution and blocked isocyanate solution, and preparing the paint.
In the prior art, imide prepolymer is generally synthesized by an acyl chloride route and a diisocyanate route, the former has long process flow, the storage stability of acyl chloride and derivatives is poor, particularly HCl gas is released in the production process to pollute the environment and corrode equipment, and the latter simplifies the operation process, but the former has two defects: namely, the paint has poor storage property due to high-activity isocyanic acid radical in the product, the molecular weight of the product is too large, the viscosity of the paint is too large, a large amount of solvent is consumed, and the paint is difficult to coat.
The aramid fiber yarn woven layer (304) is formed by spirally winding and weaving aramid fiber yarns on the surface of the polyester resin fiber paint coating (303) under a semi-solid state when the polyester resin fiber paint coating (303) is cooled, and part of the aramid fiber yarn woven layer (304) is embedded in the surface of the polyester resin fiber paint coating (303).
Through this mode, can directly fuse at insulating part around covering 305 with aramid fiber silk weaving layer 304 and the mica tape as the fire prevention part, as a whole, be difficult to drop, still have good tensile resistance, also increased the intensity of whole enameled wire.
Example 2:
as shown in fig. 2, the present invention provides a method for preparing a high-strength enameled wire conductive layer, wherein the conductive layer may be the conductive core layer in embodiment 1, and the method specifically includes the following steps:
step 100, smelting a conductive alloy, and rolling and stretching to obtain an aluminum wire with a required specification;
step 200, spirally winding and twisting an aluminum wire into a conductive core wire with a regular shape;
step 300, forming a conductive auxiliary layer on the surface of the conductive core wire in an electrolytic mode;
400, weaving high-strength fibers on the surface of the conductive auxiliary layer to form a tensile coating layer for improving tensile property and preventing the conductive core wire from being broken;
and 500, weaving the surface of the tensile coating layer to form a composite layer with an antirust function and an enhanced strength.
The conductive auxiliary layer is a nano silver-copper alloy coating, and the nano silver-copper alloy coating is formed on the conductive glass plate by dropwise adding electrolyte for electrolysis.
The composite layer is formed by adding a galvanized copper layer on the tensile coating layer in an electrolytic mode and then weaving reinforcing wires on the surface of the galvanized copper layer.
In the method, the conductivity is increased by forming the nano silver-copper alloy coating in an electrolytic mode on the conventional basis of taking the aluminum core as the conductive central layer, and compared with a copper-clad aluminum wire and a silver-plated copper wire in the prior art, the method not only has the characteristics of the copper-clad aluminum wire and the silver-plated copper wire, but also solves the problems of the copper-clad aluminum wire and the silver-plated copper wire, and has higher conductivity on the premise of reducing the cost; in addition, by adopting a weaving mode, the tensile coating layer and the composite layer for increasing the strength are formed, so that the whole enameled wire has higher tensile property and strength.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A high-strength enameled wire comprises a conductive core layer (1), and is characterized in that a reinforcing composite layer (2) is arranged on the surface of the conductive core layer (1), an insulating paint layer (3) is arranged on the surface of the reinforcing composite layer (2), the conductive core layer (1) comprises an aluminum core layer (101) and a nano silver-copper alloy coating (102) arranged on the outer wall of the aluminum core layer (101), a tensile coating layer (103) is arranged on the outer surface of the nano silver-copper alloy coating (102), a galvanized second copper layer (104) is arranged on the outer surface of the tensile coating layer (103), a plurality of filling concave points are uniformly distributed on the surface of the galvanized second copper layer (104), and a body of the reinforcing composite layer (2) protrudes to form protruding points which are embedded in the filling concave points and tightly coated on the surface of the galvanized second copper layer (104);
the aluminum core layer (101) is formed by twisting a plurality of aluminum wires into a regular long cylindrical shape, and the nano silver-copper alloy coating (102) completely fills fine grooves formed on the surface of the aluminum core layer (101) due to twisting;
the reinforced composite layer (2) comprises a sol layer (201), salient points formed by the sol layer (201) are embedded in the filling concave points, and a reinforced mesh layer (202) is woven on the sol layer (201) by adopting high-strength reinforced wires;
the forming method of the reinforced composite layer (2) comprises the following steps: firstly, high-strength reinforcing wires are woven on the surface of the galvanized second copper layer (104) to form a reinforcing mesh wire layer (202), then liquid sol is added on the surface of the reinforcing mesh wire layer (202), and the sol layer (201) is formed through extrusion cooling.
2. The high-strength enameled wire according to claim 1, wherein: the preparation method of the nano silver-copper alloy coating (102) comprises the following steps:
firstly, taking a conductive glass plate as a cathode and a silver plate as an anode, and arranging a hollow groove column for placing an aluminum core layer (101) between the anode and the cathode;
then, preparing electrolyte, adding the electrolyte into the hollow groove column, and placing the aluminum core layer (101) in the hollow groove column to ensure that the aluminum core layer (101) is completely immersed in the electrolyte;
setting a deposition potential of-1.2V, performing deposition at room temperature, rotating the aluminum core layer (101) while depositing, and enabling the nano silver-copper alloy formed by electrodeposition to form a nano silver-copper alloy coating (102) on the surface of the aluminum core layer (101).
3. The high-strength enameled wire according to claim 2, wherein: preparing the electrolyte: adding 30ml of secondary deionized water into a beaker, and thenThen 0.0185g of silver nitrate and 0.0125g of Cu (NO) are added3)2 .3H2And O, stirring uniformly by using a glass rod.
4. The high-strength enameled wire according to claim 1, wherein: and the tensile coating layer (103) is formed by spirally winding a plurality of carbon fiber wires on the surface of the nano silver-copper alloy coating layer (102) clockwise and anticlockwise.
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| CN203192424U (en) * | 2013-04-24 | 2013-09-11 | 桐乡市永成线缆有限公司 | Tinned copper wire |
| CN203588704U (en) * | 2013-10-31 | 2014-05-07 | 江西千磁电线电缆有限公司 | Copper-clad aluminum enamelled wire with high intensity |
| CN204480686U (en) * | 2015-01-30 | 2015-07-15 | 苏州圣利线缆有限公司 | A kind of high strength enamelled wire |
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