High-temperature-resistant enameled copper rectangular wire

Abstract

This invention relates to the field of enameled wire technology, and more particularly to a high-temperature resistant enameled copper square wire, comprising an enameled copper square wire body and a conductor core. The enameled copper square wire body includes an insulation 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 varnish layer. The insulation layer covers the outer surface of the conductor core, the mica tape covers the outer side of the insulation layer away from the conductor core, and the first high-temperature resistant layer covers the other side of the mica tape. This invention enables the enameled flat wire to withstand the erosion of the second high-temperature resistant layer by the fireproof wrapping tape under high temperature, thus forming a fireproof protective layer. This avoids the erosion of high temperatures such as fire sources. At the same time, when the mica tape is exposed to fire or high temperature, it can form a dense protective layer, effectively isolating the enameled flat wire from flames and high temperatures.

Description

Technical Field

[0001] This invention relates to the field of enameled wire technology, specifically to a high-temperature resistant enameled copper square wire. Background Technology

[0002] Enameled wire is a major type of winding wire, consisting of a conductor and an insulation layer. The bare wire is annealed and softened, then coated with enamel multiple times and baked. However, producing products that meet both standard requirements and customer demands is not easy. It is affected by factors such as raw material quality, process parameters, production equipment, and environment. Therefore, the quality characteristics of various enameled wires differ, but they all possess four major properties: mechanical, chemical, electrical, and thermal properties.

[0003] Enameled copper flat wire refers to a wire made by using high-quality electrolytic copper as the conductor, which is precisely processed and drawn into a flat shape of a specific specification, and then coated with one or more layers of insulating varnish. During the production of enameled copper flat wire, relatively soft materials with poor high-temperature resistance are generally used. If exposed to open flames or high ambient temperatures, the enameled copper flat wire is easily damaged by high temperatures, which will affect its subsequent use. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature resistant enameled copper square wire to solve the problems existing in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant enameled copper square wire, comprising an enameled copper square wire body and a conductor core, wherein the enameled copper square wire body includes an insulation 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 varnish layer. The insulation layer covers the outer surface of the conductor core, the mica tape covers the outer side of the insulation layer away from the conductor core, the first high-temperature resistant layer covers the other side of the mica tape, the flame-retardant layer covers the other side of the first high-temperature resistant layer away from the mica tape, the fireproof wrapping tape covers the other side of the flame-retardant layer, the second high-temperature resistant layer covers the other side of the fireproof wrapping tape away from the flame-retardant layer, the composite coating is disposed on the outer side of the second high-temperature resistant layer, and the protective varnish layer is disposed on the outermost side of the composite coating.

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

[0007] Preferably, the protective coating layer includes an anti-bending layer and an abrasion-resistant layer, wherein the anti-bending layer covers the outermost side of the waterproof layer, and the abrasion-resistant layer is disposed on the outermost side.

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

[0009] Preferably, the first high-temperature resistant layer is made of ceramic fiber, and the second high-temperature resistant layer is made of polyesterimide.

[0010] Preferably, the flexural layer is made of polyester fiber, and the abrasion-resistant layer is made of nylon.

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

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

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

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

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention, through the arrangement of a second high-temperature resistant layer, a fireproof wrapping tape, a flame-retardant layer, a first high-temperature resistant layer, and a mica tape, ensures that when the enameled flat wire is exposed to fire and high temperatures, and the second high-temperature resistant layer is damaged, the fireproof wrapping tape, under high temperature, can tightly wrap around the surface of the flame-retardant layer, thus forming a fireproof protective layer. This prevents erosion from fire and other high temperatures. At the same time, the flame-retardant layer and the first high-temperature resistant layer give the enameled flat wire excellent high-temperature resistance, enabling it to maintain structural stability and integrity in high-temperature environments. When the mica tape is exposed to fire or high temperatures, it can form a dense protective layer, effectively isolating the enameled flat wire from flames and high temperatures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in this invention;

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

[0019] Figure 3 This is a schematic diagram of the stacked structure of the composite coating in this invention;

[0020] Figure 4 This is a schematic diagram of the layered structure of the protective paint layer in this invention;

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

[0022] In the diagram: 1. Enamelled square wire body; 11. Insulation layer; 12. Mica tape; 13. First high-temperature resistant layer; 14. Flame retardant layer; 15. Fireproof wrapping tape; 16. Second high-temperature resistant layer; 17. Composite coating; 171. Anti-corrosion layer; 172. Waterproof layer; 18. Protective paint layer; 181. Bending-resistant layer; 182. Metal mesh; 183. Wear-resistant layer; 2. Conductor core. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-5 A high-temperature resistant enameled copper square wire comprises an enameled copper square wire body 1 and a conductor core 2. The conductor core 2 is made of copper, with a thickness of 0.04 cm and a width of 0.25 cm. The enameled copper square wire body 1 includes an insulation layer 11, a mica tape 12, a first high-temperature resistant layer 13, a flame-retardant layer 14, a fireproof wrapping tape 15, a second high-temperature resistant layer 16, a composite coating 17, and a protective varnish layer 18. The insulation layer 11 covers the outer surface of the conductor core 2, the mica tape 12 covers the outer side of the insulation layer 11 away from the conductor core 2, and the first high-temperature resistant layer 13 covers the other side of the mica tape 12. The flame-retardant layer is also present. Layer 14 covers the side of the first high-temperature resistant layer 13 away from the mica tape 12. The flame-retardant layer 14 is made of polyimide and is located between the first high-temperature resistant layer 13 and the fireproof wrapping tape 15. The flame-retardant layer 14 is made of polyimide, which gives it good flame-retardant properties, solvent resistance and refrigerant resistance. The fireproof wrapping tape 15 covers the other side of the flame-retardant layer 14. The second high-temperature resistant layer 16 covers the other side of the fireproof wrapping tape 15 away from the flame-retardant layer 14. The composite coating 17 is disposed on the outside of the second high-temperature resistant layer 16. The protective paint layer 18 is disposed 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 covers the outside of the second high-temperature resistant layer 16, and the waterproof layer 172 covers the outside of the anti-corrosion layer 171. Thus, through the arrangement of the anti-corrosion layer 171 and the waterproof layer 172, the enameled copper flat wire can not only play a role in corrosion prevention during use, but also has good waterproof performance and electrical insulation performance.

[0026] The protective coating 18 includes an anti-bending layer 181 and an abrasion-resistant layer 183. The anti-bending layer 181 covers the outermost side of the waterproof layer 172, and the abrasion-resistant layer 183 is placed on the outermost side. In this way, the anti-bending layer 181 and the abrasion-resistant layer 183 can not only effectively absorb and disperse the stress generated during bending, thereby protecting the enameled flat wire from damage, but also improve the abrasion resistance of the enameled wire and improve its anti-bending performance to a certain extent.

[0027] A metal mesh 182 is provided between the bending-resistant layer 181 and the wear-resistant layer 183, which can increase the bending resistance of the enameled copper flat wire and thus extend its service life.

[0028] The first high-temperature resistant layer 13 is made of ceramic fiber, and the second high-temperature resistant layer 16 is made of polyesterimide. The use of ceramic fiber in the first high-temperature resistant layer 13 gives the enameled square wire excellent high-temperature resistance, enabling it to maintain structural stability and integrity under high-temperature conditions. It also possesses good insulation properties and mechanical strength, effectively protecting the wire from damage caused by high temperatures and flames. The use of polyesterimide in the second high-temperature resistant layer 16 provides good flame retardant properties, solvent resistance, and refrigerant resistance, further enhancing the high-temperature resistance of the enameled square wire.

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

[0030] The anti-corrosion layer 171 is made of polyurethane paint, and the waterproof layer 172 is made of polyethylene. The polyurethane paint effectively isolates external corrosive substances and protects the conductor from corrosion. At the same time, the polyethylene provides good waterproof and electrical insulation properties.

[0031] Working principle: In use, when a fire occurs, the second high-temperature resistant layer 16, made of polyesterimide, has good flame retardant, solvent resistance, and refrigerant resistance, thus improving the high-temperature resistance of the enameled square wire. When the second high-temperature resistant layer 16 is damaged by high temperature, the fireproof wrapping tape 15 will continue to be exposed to high temperatures. Under high temperature, the fireproof wrapping tape 15 can tightly wrap around the surface of the flame retardant layer 14, forming a fireproof protective layer. This can prevent the corrosion of high temperatures from fire sources. 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 in high-temperature environments. When the mica tape 12 is exposed to fire or high temperature, it can form a dense protective layer, effectively isolating the enameled flat wire from flames and high temperatures. During the use of the enameled flat wire, the composite coating 17 and the protective paint layer 18 can not only improve the bending resistance of the enameled flat wire, but also reduce the corrosion of the enameled flat wire.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which 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) includes an insulation layer (11), a mica tape (12), a first high-temperature resistant layer (13), a flame-retardant layer (14), a fireproof wrapping tape (15), a second high-temperature resistant layer (16), a composite coating (17), and a protective varnish layer (18). The insulation layer (11) covers the outer surface of the conductor core (2), the mica tape (12) covers the outside of the insulation layer (11), the first high-temperature resistant layer (13) covers the outside of the mica tape (12), and the first high-temperature resistant layer (13) is made of ceramic fiber. The flame-retardant layer (14) covers the outside of the first high-temperature resistant layer (13), and the flame-retardant layer (14) is made of polyimide. The fireproof wrapping tape (15) covers the outside of the flame-retardant layer (14), the second high-temperature resistant layer (16), a composite coating (17), and a protective varnish layer (18). A high-temperature layer (16) is wrapped around the outside of the fireproof wrapping tape (15). The material of the second high-temperature resistant layer (16) is polyesterimide. The composite coating (17) is disposed on the outside of the second high-temperature resistant layer (16). The protective paint layer (18) is disposed on the outside of the composite coating (17). The composite coating (17) includes an anti-corrosion layer (171) and a waterproof layer (172). The anti-corrosion layer (171) is wrapped around the outside of the second high-temperature resistant layer (16). The waterproof layer (172) is wrapped around the outside of the anti-corrosion layer (171). The protective paint layer (18) includes an anti-bending layer (181) and a wear-resistant layer (183). The anti-bending layer (181) is wrapped around the outside of the waterproof layer (172). The wear-resistant layer (183) is disposed on the outer surface.

2. The high-temperature resistant enameled copper square wire according to claim 1, characterized in that: A metal mesh (182) is provided between the anti-bending layer (181) and the wear-resistant layer (183).

3. The high-temperature resistant enameled copper square wire according to claim 1, characterized in that: The bending-resistant layer (181) is made of polyester fiber, and the wear-resistant layer (183) is made of nylon.

4. The high-temperature resistant enameled copper square wire according to claim 1, characterized in that: The anti-corrosion layer (171) is made of polyurethane paint, and the waterproof layer (172) is made of polyethylene.

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

6. 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 0.04cm and 0.25cm, respectively.

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