An enameled wire with a polyester-imide composite insulating layer dedicated to aluminum wire
By using a multi-layer composite insulation structure, the problem of low performance of enameled wire has been solved, achieving a comprehensive improvement in performance and enhancing the practicality and safety of enameled wire.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SIDA SPECIAL MATERIAL & TECH CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-21
AI Technical Summary
The existing enameled wire has a simple structure, resulting in low performance, easy damage, and reduced practicality and safety.
It adopts a multi-layer composite insulation structure, including a wire core, a first insulation layer, an elastic layer, a tough layer, a reinforcing layer, a second insulation layer, a heat dissipation layer, a fireproof layer, an anti-corrosion layer, and a wear-resistant layer, etc., and improves various performances through the combination of different materials.
It improves the insulation, compressive strength, toughness, tensile strength, heat dissipation, fire resistance, corrosion resistance and wear resistance of enameled wire, thus enhancing the practicality and safety of enameled wire.
Smart Images

Figure CN224536724U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of enameled wire technology, and in particular to an enameled wire with a polyesterimide composite insulation layer for aluminum 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, and then coated with enamel and baked multiple times. Enameled wire has four major characteristics: mechanical properties, chemical properties, electrical properties, and thermal properties.
[0003] In the existing technology, traditional enameled wire has a simple structure, and its exterior often has only a single insulation layer. This design makes the various properties of the enameled wire relatively low, making it prone to damage during use, thereby reducing the practicality and safety of the enameled wire. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a special enameled wire with a polyesterimide composite insulation layer for aluminum wire.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an enameled wire with a polyesterimide composite insulation layer for aluminum wire, comprising a wire core and a first insulation layer, the first insulation layer being sleeved on the outer surface of the wire core, an elastic layer being sleeved on the outer surface of the first insulation layer, a toughness layer being sleeved on the outer surface of the elastic layer, a reinforcing layer being sleeved on the outer surface of the toughness layer, a second insulation layer being sleeved on the outer surface of the reinforcing layer, a heat dissipation layer being sleeved on the outer surface of the second insulation layer, a fireproof layer being sleeved on the outer surface of the heat dissipation layer, an anti-corrosion layer being sleeved on the outer surface of the fireproof layer, and a wear-resistant layer being sleeved on the outer surface of the anti-corrosion layer.
[0006] As a further description of the above technical solution: a positioning block is fixedly installed on the inner wall of the toughness layer, and a positioning groove adapted to the positioning block is opened on the outer surface of the elastic layer. By setting the above components, the position of the toughness layer is fixed.
[0007] As a further description of the above technical solution: the heat dissipation layer has several mounting holes inside, and reinforcing wires are inserted into the mounting holes. The reinforcing wires are made of ultra-high molecular weight polyethylene fiber. By setting the above components, the strength of the heat dissipation layer is improved.
[0008] As a further description of the above technical solution: the first insulating layer and the second insulating layer are both made of polyesterimide, and the elastic layer is made of rubber. By setting the above components, the insulation and compressive strength of the enameled wire are improved.
[0009] As a further description of the above technical solution: the toughness layer is made of asbestos fiber, and the reinforcing layer is made of high-strength composite coating. By setting the above components, the toughness and tensile strength of the enameled wire are improved.
[0010] As a further description of the above technical solution: the heat dissipation layer is made of thermally conductive silicone, and the fireproof layer is made of fireproof resin. By setting the above components, the heat dissipation performance and fireproof performance of the enameled wire are improved.
[0011] As a further description of the above technical solution: the anti-corrosion layer is made of polyurethane, and the wear-resistant layer is made of epoxy resin. By setting the above components, the anti-corrosion performance and wear resistance of the enameled wire are improved.
[0012] This utility model has the following beneficial effects:
[0013] Compared with existing technologies, this enameled wire with a polyesterimide composite insulation layer for aluminum wire achieves improved performance by incorporating components such as a core, a first insulation layer, an elastic layer, a toughness layer, a reinforcing layer, a second insulation layer, a heat dissipation layer, a fireproof layer, an anti-corrosion layer, a wear-resistant layer, positioning blocks, mounting holes, and heat-conducting wires. Furthermore, by applying various types of coatings and covering the core with different types of outer shells, the performance of the enameled wire is enhanced, preventing damage during use and improving its practicality and safety. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of an enameled wire with a polyesterimide composite insulation layer for aluminum wire proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the first insulation layer structure of an enameled wire with a polyesterimide composite insulation layer for aluminum wire proposed in this utility model.
[0016] Figure 3 This is a schematic diagram of the elastic layer structure of an enameled wire with a polyesterimide composite insulation layer for aluminum wire proposed in this utility model.
[0017] Figure 4 This is a schematic diagram of the heat dissipation layer structure of an enameled wire with a polyesterimide composite insulation layer for aluminum wire, as proposed in this utility model.
[0018] Legend:
[0019] 1. Core wire; 2. First insulation layer; 3. Elastic layer; 4. Tough layer; 5. Reinforcing layer; 6. Second insulation layer; 7. Heat dissipation layer; 8. Fireproof layer; 9. Corrosion-resistant layer; 10. Wear-resistant layer; 11. Positioning block; 12. Mounting hole; 13. Heat-conducting wire. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Reference Figures 1 to 4 This utility model provides an enameled wire with a polyesterimide composite insulation layer for aluminum wire: it includes a wire core 1 and a first insulation layer 2. The first insulation layer 2 is sleeved on the outer surface of the wire core 1. An elastic layer 3 is sleeved on the outer surface of the first insulation layer 2. The elastic layer 3 is made of rubber. A toughness layer 4 is sleeved on the outer surface of the elastic layer 3. The toughness layer 4 is made of asbestos fiber. A reinforcing layer 5 is sleeved on the outer surface of the toughness layer 4. The reinforcing layer 5 is made of high-strength composite coating. A second insulation layer 6 is sleeved on the outer surface of the reinforcing layer 5. Both the first insulation layer 2 and the second insulation layer 6 are made of polyesterimide.
[0022] To further improve the performance of the enameled wire, a heat dissipation layer 7 is fitted on the outer surface of the second insulation layer 6. The heat dissipation layer 7 is made of thermally conductive silicone. A fireproof layer 8 is fitted on the outer surface of the heat dissipation layer 7. The fireproof layer 8 is made of fireproof resin. An anti-corrosion layer 9 is fitted on the outer surface of the fireproof layer 8. The anti-corrosion layer 9 is made of polyurethane. A wear-resistant layer 10 is fitted on the outer surface of the anti-corrosion layer 9. The wear-resistant layer 10 is made of epoxy resin. A positioning block 11 is fixedly installed on the inner wall of the toughness layer 4. A positioning groove that matches the positioning block 11 is opened on the outer surface of the elastic layer 3. Several mounting holes 12 are opened inside the heat dissipation layer 7. A reinforcing wire 13 is inserted into the mounting hole 12. The reinforcing wire 13 is made of ultra-high molecular weight polyethylene fiber.
[0023] By setting up a core 1, a first insulation layer 2, an elastic layer 3, a toughness layer 4, a reinforcing layer 5, a second insulation layer 6, a heat dissipation layer 7, a fireproof layer 8, an anti-corrosion layer 9, a wear-resistant layer 10, a positioning block 11, a mounting hole 12, and a heat-conducting wire 13, the performance of the enameled wire is improved. By applying various types of coatings and covering the outside of the enameled wire core with various types of shells, the performance of the enameled wire is enhanced, preventing damage during use and improving its practicality and safety.
[0024] Working principle: In the production of enameled wire, the wire core 1 is first fixed. Then, a layer of polyesterimide insulation coating is coated on the outer surface of the wire core 1. The insulation coating is then dried to form the first insulation layer 2. Next, an elastic layer 3 made of rubber is wrapped around the outside of the first insulation layer 2. Then, a tough layer 4 made of asbestos fiber is wrapped around the outside of the elastic layer 3, and the positioning block 11 on the inner wall of the tough layer 4 is inserted into the positioning groove on the outer wall of the elastic layer 3 to position the tough layer 4. Then, a high-strength composite coating is coated on the outer surface of the tough layer 4. After the high-strength composite coating is dried, a reinforcing layer 5 is formed. Then, a further... A layer of polyesterimide insulating coating is applied to the outside of the reinforcing layer 5. After drying, it forms the second insulating layer 6. Then, a heat dissipation layer 7 made of thermally conductive silicone grease is fitted onto the outside of the second insulating layer 6. Several mounting holes 12 are opened through the inside of the heat dissipation layer 7. Then, a reinforcing wire 13 made of ultra-high molecular weight polyethylene fiber is inserted into the mounting holes 12. Next, a fire-retardant resin paint is applied to the heat dissipation layer 7. After drying, it forms a fire-retardant layer 8. Then, a polyurethane paint is applied to the outside of the fire-retardant layer 8. After drying, it forms an anti-corrosion layer 9. Finally, an epoxy resin is applied to the outer surface of the anti-corrosion layer 9. After drying, it forms a wear-resistant layer 10, thus completing the production of the enameled wire.
[0025] During the use of enameled wire, the first insulation layer 2 and the second insulation layer 6 maximize the insulation performance of the enameled wire, the elastic layer 3 improves the compressive strength of the enameled wire, the toughness layer 4 improves the toughness of the enameled wire, the reinforcing layer 5 improves the tensile strength of the enameled wire, the heat dissipation layer 7 improves the heat dissipation effect of the enameled wire, the fireproof layer 8 and the anti-corrosion layer 9 improve the fireproof and anti-corrosion performance of the enameled wire, and the wear-resistant layer 10 improves the wear resistance of the enameled wire.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An enameled wire with a polyesterimide composite insulation layer for aluminum wire, comprising a wire core (1) and a first insulation layer (2), characterized in that: The first insulating layer (2) is sleeved on the outer surface of the core (1). The outer surface of the first insulating layer (2) is sleeved with an elastic layer (3). The outer surface of the elastic layer (3) is sleeved with a tough layer (4). The outer surface of the tough layer (4) is sleeved with a reinforcing layer (5). The outer surface of the reinforcing layer (5) is sleeved with a second insulating layer (6). The outer surface of the second insulating layer (6) is sleeved with a heat dissipation layer (7). The outer surface of the heat dissipation layer (7) is sleeved with a fireproof layer (8). The outer surface of the fireproof layer (8) is sleeved with an anti-corrosion layer (9). The outer surface of the anti-corrosion layer (9) is sleeved with a wear-resistant layer (10).
2. The enameled wire with a polyesterimide composite insulation layer for aluminum wire according to claim 1, characterized in that: The inner wall of the toughness layer (4) is fixedly installed with a positioning block (11), and the outer surface of the elastic layer (3) is provided with a positioning groove that matches the positioning block (11).
3. The enameled wire with a polyesterimide composite insulation layer for aluminum wire according to claim 1, characterized in that: The heat dissipation layer (7) has several mounting holes (12) inside, and a reinforcing wire (13) is inserted inside the mounting holes (12). The reinforcing wire (13) is made of ultra-high molecular weight polyethylene fiber.
4. The enameled wire with a polyesterimide composite insulation layer for aluminum wire according to claim 1, characterized in that: The first insulating layer (2) and the second insulating layer (6) are both made of polyesterimide, and the elastic layer (3) is made of rubber.
5. The enameled wire with a polyesterimide composite insulation layer for aluminum wire according to claim 1, characterized in that: The toughness layer (4) is made of asbestos fiber, and the reinforcing layer (5) is made of high-strength composite coating.
6. The enameled wire with a polyesterimide composite insulation layer for aluminum wire according to claim 1, characterized in that: The heat dissipation layer (7) is made of thermally conductive silicone, and the fireproof layer (8) is made of fireproof resin.
7. The enameled wire with a polyesterimide composite insulation layer for aluminum wire according to claim 1, characterized in that: The anti-corrosion layer (9) is made of polyurethane, and the wear-resistant layer (10) is made of epoxy resin.