High-temperature-resistant enameled square copper wire

Abstract

The invention relates to the technical field of enameled wires, in particular to a high-temperature-resistant enameled square copper wire which comprises an enameled square wire body and an enameled square copper wire composed of a guide core, and the enameled square wire body comprises an insulating layer, a mica tape, a first high-temperature-resistant layer, a flame-retardant layer, a fireproof wrapping tape, a second high-temperature-resistant layer, a composite coating and a protective paint layer. The insulating layer wraps the outer surface of the guide core, the mica tape wraps the outer side, away from the guide core, of the insulating layer, and the first high-temperature-resistant layer wraps the other side of the mica tape. When the enameled flat wire is eroded by a fire source and high temperature and the external second high-temperature-resistant layer is damaged, the fireproof wrapping tape can be tightly wrapped on the surface of the flame-retardant layer under the high temperature so as to form a fireproof protection layer, so that the high-temperature erosion of the fire source and the like can be avoided, and meanwhile, when the mica tape is eroded by the fire source or the high temperature, the fireproof protection layer can be formed. A compact protective layer can be formed, and damage of flames and high temperature to the enameled flat wire can be effectively isolated.

Description

Technical Field

[0001] The invention relates to the technical field of enameled wires, in particular to a high temperature resistant enameled copper square wire. Background Art

[0002] Enameled wire is a main type of winding wire, which consists of a conductor and an insulating layer. The bare wire is annealed and softened, then painted and baked for many times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and environment. Therefore, the quality characteristics of various enameled wires are different, but they all have four major properties: mechanical properties, chemical properties, electrical properties, and thermal properties.

[0003] Enameled copper flat wire refers to an electric wire made of high-quality electrolytic copper as a conductor, which is precision-processed and drawn into a flat shape of specific specifications, and then coated with one or more layers of insulating varnish on the surface. During the production of enameled copper flat wire, relatively soft materials with poor high-temperature resistance are generally used. If exposed to external open flames or high external temperatures, the enameled copper flat wire is easily damaged by the high temperature, which in turn affects its subsequent use. Summary of the invention

[0004] The object of the present invention is to provide a high temperature resistant enameled copper square wire to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-temperature resistant enameled copper square wire, comprising an enameled copper square wire composed of an enameled square wire body and a conductor core, the enameled square wire body comprising an insulating layer, a mica tape, a first high-temperature resistant layer, a flame retardant layer, a fireproof tape, a second high-temperature resistant layer, a composite coating and a protective paint layer, the insulating layer is coated on the outer surface of the conductor core, the mica tape is coated on the outer side of the insulating layer away from the conductor core, the first high-temperature resistant layer is coated on the other side of the mica tape, the flame retardant layer is coated on the other side of the first high-temperature resistant layer away from the mica tape, the fireproof tape is coated on the other side of the flame retardant layer, the second high-temperature resistant layer is coated on the other side of the fireproof tape away from the flame retardant layer, the composite coating is arranged on the outer side of the second high-temperature resistant layer, and the protective paint layer is arranged on the outermost side of the composite coating.

[0006] Preferably, the composite coating includes an anti-corrosion layer and a waterproof layer, the anti-corrosion layer is coated on the outside of the second high temperature resistant layer, and the waterproof layer is coated on the outside of the anti-corrosion layer.

[0007] Preferably, the protective paint layer includes an anti-bending layer and a wear-resistant layer, the anti-bending layer is coated on the outermost side of the waterproof layer, and the wear-resistant layer is arranged on the outermost side.

[0008] Preferably, a metal mesh is provided between the anti-bending layer and the wear-resistant layer.

[0009] Preferably, the material of the first high temperature resistant layer is ceramic fiber, and the material of the second high temperature resistant layer is polyester imide.

[0010] Preferably, the anti-bending layer is made of polyester fiber, and the wear-resistant layer is made of nylon.

[0011] Preferably, the material of the anti-corrosion layer is polyurethane paint, and the material of the waterproof layer is polyethylene.

[0012] Preferably, the flame retardant layer is made of polyimide, and the flame retardant layer is located between the first high temperature resistant layer and the fireproof tape.

[0013] Preferably, the guide core is made of copper.

[0014] Preferably, the thickness and width of the guide core are 0.04 cm and 0.25 cm respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention arranges the second high-temperature resistant layer, the fireproof tape, the flame retardant layer, the first high-temperature resistant layer and the mica tape, so that when the enameled flat wire is eroded by a fire source and high temperature, after the second high-temperature resistant layer on the outside is damaged, the fireproof tape can be tightly wrapped around the surface of the flame retardant layer when exposed to high temperature, thereby forming a fireproof protective layer, thereby avoiding erosion by high temperatures such as fire sources. At the same time, through the arrangement of the flame retardant layer and the first high-temperature resistant layer, the enameled square wire has excellent high-temperature resistance and can maintain structural stability and integrity under high-temperature environments. When the mica tape is exposed to a fire source or high temperature, it can form a dense protective layer to effectively isolate the enameled flat wire from damage by flames and high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the stacked structure in the present invention;

[0019] Figure 3 Schematic diagram of the stacked structure of the composite coating in the present invention;

[0020] Figure 4 Schematic diagram of the stacked structure of the protective paint layer in the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the metal mesh in the present invention.

[0022] In the figure: 1. enameled square wire body; 11. insulation layer; 12. mica tape; 13. first high temperature resistant layer; 14. flame retardant layer; 15. fireproof tape; 16. second high temperature resistant layer; 17. composite coating; 171. anti-corrosion layer; 172. waterproof layer; 18. protective paint layer; 181. anti-bending layer; 182. metal mesh; 183. wear-resistant layer; 2. guide core. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 A high temperature resistant enameled copper square wire, comprising an enameled copper square wire body 1 and a conductor core 2, the conductor core 2 is made of copper, the thickness and width of the conductor core 2 are 0.04 cm and 0.25 cm respectively, the enameled square wire body 1 comprises an insulating layer 11, a mica tape 12, a first high temperature resistant layer 13, a flame retardant layer 14, a fireproof tape 15, a second high temperature resistant layer 16, a composite coating 17 and a protective paint layer 18, the insulating layer 11 is coated on the outer surface of the conductor core 2, the mica tape 12 is coated on the outer side of the insulating layer 11 away from the conductor core 2, the first high temperature resistant layer 13 is coated on the other side of the mica tape 12, and the flame retardant Layer 14 is coated on the other side of the first high temperature resistant layer 13 away from the mica tape 12. The material of the flame retardant layer 14 is polyimide, and the flame retardant layer 14 is located between the first high temperature resistant layer 13 and the fireproof tape 15. The flame retardant layer 14 is polyimide, so that it has good flame retardant properties, solvent resistance and refrigerant resistance. The fireproof tape 15 is coated on the other side of the flame retardant layer 14, and the second high temperature resistant layer 16 is coated on the other side of the fireproof tape 15 away from the flame retardant layer 14. The composite coating 17 is arranged on the outside of the second high temperature resistant layer 16, and the protective paint layer 18 is arranged on the outermost side of the composite coating 17.

[0025] The composite coating 17 includes an anti-corrosion layer 171 and a waterproof layer 172. The anti-corrosion layer 171 is coated on the outside of the second high-temperature resistant layer 16, and the waterproof layer 172 is coated on the outside of the anti-corrosion layer 171. By setting the anti-corrosion layer 171 and the waterproof layer 172, the enameled copper rectangular wire can not only play an anti-corrosion effect during use, but also has good waterproof performance and electrical insulation performance.

[0026] The protective paint layer 18 includes an anti-bending layer 181 and a wear-resistant layer 183. The anti-bending layer 181 is coated on the outermost side of the waterproof layer 172, and the wear-resistant layer 183 is arranged on the outermost side. In this way, through the arrangement of the anti-bending layer 181 and the wear-resistant layer 183, not only can the stress generated during the bending process be effectively absorbed and dispersed, thereby protecting the enameled flat wire from damage, but also the wear resistance of the enameled wire can be improved, and its anti-bending performance can be improved to a certain extent.

[0027] A metal mesh 182 is disposed between the anti-bending layer 181 and the wear-resistant layer 183 , so as to increase the anti-bending effect of the enameled copper flat wire and thereby extend its service life.

[0028] The material of the first high temperature resistant layer 13 is ceramic fiber, and the material of the second high temperature resistant layer 16 is polyesterimide. The first high temperature resistant layer 13 is ceramic fiber, so that the enameled square wire has excellent high temperature resistance and can maintain the stability and integrity of the structure under high temperature environment. It also has good insulation performance and mechanical strength, which can effectively protect the wire from high temperature and flame damage; the second high temperature resistant layer 16 is polyesterimide, which has good flame retardant performance, solvent resistance and refrigerant resistance, thereby further improving the high temperature resistance effect of the enameled square wire.

[0029] The material of the anti-bending layer 181 is polyester fiber, and the material of the wear-resistant layer 183 is nylon. Polyester fiber has excellent strength and toughness. These fibers can effectively absorb and disperse the stress generated during the bending process, thereby protecting the enameled flat wire from damage, while nylon has good insulation properties and wear resistance.

[0030] The material of the anti-corrosion layer 171 is polyurethane paint, and the material of the waterproof layer 172 is polyethylene. The setting of the polyurethane paint can effectively isolate external corrosive substances and protect the conductor from corrosion. At the same time, the setting of polyethylene has good waterproof performance and electrical insulation performance.

[0031] Working principle: During use, when a fire occurs outside, the second high temperature resistant layer 16 can be made of polyesterimide, which has good flame retardant properties, solvent resistance and refrigerant resistance, thereby improving the high temperature resistance of the enameled square wire. When the second high temperature resistant layer 16 is damaged by high temperature, it will continue to heat the fireproof tape 15. When the fireproof tape 15 is subjected to high temperature, it can be tightly wrapped on the surface of the flame retardant layer 14 to form a fireproof protective layer, which can avoid the erosion of high temperature such as fire source. At the same time, through the setting of the flame retardant layer 14 and the first high temperature resistant layer 13, the enameled square wire has excellent high temperature resistance and can maintain the stability and integrity of the structure under high temperature environment. When the mica tape 12 is subjected to fire source or high temperature, it can form a dense protective layer to effectively isolate the flame and high temperature from the damage to the enameled flat wire. At the same time, during the use of the enameled flat wire, the composite coating 17 and the protective paint layer 18 can be set, which can not only improve the anti-bending effect of the enameled flat wire, but also reduce the corrosion of the enameled flat wire.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant enameled copper square wire, comprising an enameled copper square wire body (1) and a conductor core (2), characterized in that: The enameled square wire body (1) comprises an insulating layer (11), a mica tape (12), a first high temperature resistant layer (13), a flame retardant layer (14), a fireproof tape (15), a second high temperature resistant layer (16), a composite coating (17) and a protective paint layer (18), wherein the insulating layer (11) is coated on the outer surface of the conductor core (2), the mica tape (12) is coated on the outer side of the insulating layer (11) away from the conductor core (2), and the first high temperature resistant layer (13) is coated on the mica tape (1 2), the flame retardant layer (14) is coated on the other side of the first high temperature resistant layer (13) away from the mica tape (12), the fireproof tape (15) is coated on the other side of the flame retardant layer (14), the second high temperature resistant layer (16) is coated on the other side of the fireproof tape (15) away from the flame retardant layer (14), the composite coating (17) is arranged on the outside of the second high temperature resistant layer (16), and the protective paint layer (18) is arranged on the outermost side of the composite coating (17).

2. The high temperature resistant enameled copper square wire according to claim 1, characterized in that: The composite coating (17) comprises an anti-corrosion layer (171) and a waterproof layer (172), wherein the anti-corrosion layer (171) is coated on the outside of the second high temperature resistant layer (16), and the waterproof layer (172) is coated on the outside of the anti-corrosion layer (171).

3. The high temperature resistant enameled copper square wire according to claim 2, characterized in that: The protective paint layer (18) comprises an anti-bending layer (181) and a wear-resistant layer (183), wherein the anti-bending layer (181) is coated on the outermost side of the waterproof layer (172), and the wear-resistant layer (183) is arranged on the outermost side.

4. The high temperature resistant enameled copper square wire according to claim 3, characterized in that: A metal mesh (182) is provided between the anti-bending layer (181) and the wear-resistant layer (183).

5. The high temperature resistant enameled copper square wire according to claim 1, characterized in that: The material of the first high temperature resistant layer (13) is ceramic fiber, and the material of the second high temperature resistant layer (16) is polyester imide.

6. The high temperature resistant enameled copper square wire according to claim 3, characterized in that: The material of the anti-bending layer (181) is polyester fiber, and the material of the wear-resistant layer (183) is nylon.

7. The high temperature resistant enameled copper square wire according to claim 2, characterized in that: The material of the anti-corrosion layer (171) is polyurethane paint, and the material of the waterproof layer (172) is polyethylene.

8. The high temperature resistant enameled copper square wire according to claim 1, characterized in that: The material of the flame retardant layer (14) is polyimide, and the flame retardant layer (14) is located between the first high temperature resistant layer (13) and the fireproof wrapping tape (15).

9. The high temperature resistant enameled copper square wire according to claim 1, characterized in that: The guide core (2) is made of copper.

10. The high temperature resistant enameled copper square wire according to claim 1, characterized in that: The thickness and width of the guide core (2) are 0.04 cm and 0.25 cm respectively.

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