CN211507200U

CN211507200U - 220-grade high-temperature-resistant polyimide enameled round copper wire

Info

Publication number: CN211507200U
Application number: CN202020197263.7U
Authority: CN
Inventors: 郭冬云; 陈建兵; 杨胜东
Original assignee: Shanghai Chongming Special Electromagnetic Wire Factory
Current assignee: Shanghai Chongming Special Electromagnetic Wire Factory
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-09-15
Anticipated expiration: 2030-02-21

Abstract

The utility model relates to a high temperature resistant polyimide enameled copper round wire of 220 grades has solved enameled copper round wire because of the problem of damaging easily when operational environment temperature is higher. It includes the copper core who is formed by many copper wires winding, the outside of copper core has tin layer, priming paint layer, polyimide lacquer layer, glass fiber layer, insulating layer in proper order the cladding, the polyimide lacquer layer comprises a plurality of polyimide single lacquer layers, the thickness on polyimide single lacquer layer is 0.003 ~ 0.005mm, the heat level on polyimide single lacquer layer is 220 grades, the outside of insulating layer is followed the radial surrounding of copper core has the protective strip. The utility model discloses have good heat resistance, long service life.

Description

220-grade high-temperature-resistant polyimide enameled round copper wire

Technical Field

The utility model belongs to the technical field of the technique of enameled round copper wire and specifically relates to a 220 level high temperature resistant polyimide enameled round copper wire is related to.

Background

The enameled wire is a main variety of winding wire and consists of a conductor and an insulating layer, a bare wire is annealed and softened and then is painted and baked for many times, but the production of a product which meets both standard requirements and customer requirements is not easy and is influenced by factors such as raw material quality, process parameters, production equipment, environment and the like, so that the quality characteristics of various enameled wires are different.

With the rapid development of the electrical and mechanical industries in China, the concept of electromechanical integration is deeply paid to people for a long time, and the development of the electrical industry cannot be separated from the development of enameled wires. The enameled round copper wire is commonly used in the fields of motors, electric appliances, instruments, transformers and the like, and along with the continuous widening of the application field, higher requirements are put forward on the enameled round copper wire, and the enameled round copper wire is required to have certain mechanical strength, strong wear resistance, scraping resistance and good lubricity.

However, the working environment of the enameled round copper wire is sometimes in a high-temperature state, for example, the electric machines and appliances such as coal mine electric machines and aviation instruments and meters are subjected to high-temperature loss when working in such an environment, and therefore, the invention of the enameled round copper wire with good heat resistance is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a 220 level high temperature resistant polyimide enameled copper round wire, its advantage lies in: has good heat resistance and wear resistance and long service life.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a high temperature resistant polyimide enameled copper round wire of 220 grades, includes the copper core that is formed by many copper wires winding, its characterized in that: the outside of copper core has cladding in proper order tin layer, priming paint layer, polyimide lacquer layer, glass fiber layer and insulating layer, the polyimide lacquer layer comprises a plurality of polyimide single lacquer layers, the thickness on polyimide single lacquer layer is 0.003 ~ 0.005mm, the heat level on polyimide single lacquer layer is 220 grades, the outside of insulating layer is followed the radial surrounding of copper core has the protective strip.

By adopting the technical scheme, the tin layer is used for protecting the copper wire core, so that the copper wire core is prevented from being oxidized or corroded, and the service life of the copper wire core is prolonged; the polyimide paint layer has excellent heat resistance, electrical insulation, mechanical property and chemical stability, can well improve the heat resistance of the wire, protects the copper wire core and prolongs the service life of the copper wire core; the glass fiber layer has good insulativity, heat resistance and corrosion resistance, so that the copper wire core and the polyimide paint layer are protected, and the copper wire core is prevented from being damaged due to damage of the paint layer; the setting of protection strip can further protect the wire rod, prevents that the wire rod from taking place damage or fracture when buckling for a long time, has also improved the wear resistance of wire rod simultaneously, prevents that the insulating layer from receiving wearing and tearing and damage.

The utility model discloses further set up to: the tin layer is coated on the outer side of the copper wire core through electroplating.

Through adopting above-mentioned technical scheme, adopt the mode of electroplating to wrap up tin layer in the outside of copper core can improve tin layer cladding compactness, improved the protection effect of tin layer to copper core, the mode of electroplating simultaneously also can make tin layer cladding thickness keep even, avoids follow-up outer cladding to receive the influence.

The utility model discloses further set up to: the thickness of the tin layer is 0.02-0.03 mm.

Through adopting above-mentioned technical scheme, the thickness on tin layer keeps can enough carrying out good protection to the copper conductor core at 0.02 ~ 0.03mm, can make the copper conductor core freely buckle again, keeps good pliability, and tin layer is too thick and leads to the tin layer damaged when avoiding the copper conductor core to buckle.

The utility model discloses further set up to: the primer layer is epoxy resin.

By adopting the technical scheme, the epoxy resin has good heat resistance, the heat resistance of the wire can be further improved, and the practical service life of the wire is prolonged.

The utility model discloses further set up to: the thickness of the primer layer is 0.03-0.04 mm.

Through adopting above-mentioned technical scheme, the thickness of priming paint layer keeps 0.03 ~ 0.04mm can be when guaranteeing to carry out better protection to the copper core save priming paint, practices thrift manufacturing cost.

The utility model discloses further set up to: the insulating layer is made of polyester-imide resin.

By adopting the technical scheme, the polyester-imide resin has excellent heat resistance and excellent thermal property, and simultaneously has good chemical stability, and the service life of wires is prolonged.

The utility model discloses further set up to: the protection strip is made of silicon rubber.

By adopting the technical scheme, the silicone rubber has outstanding heat resistance, good thermal stability, difficult aging, good air permeability and convenience for heat dissipation of wires.

The utility model discloses further set up to: the copper wire core is made of oxygen-free copper material.

By adopting the technical scheme, the oxygen-free copper has the advantages of high conductivity, corrosion resistance and high temperature resistance, the service life is long, and meanwhile, the oxygen-free copper also has extremely low electrical impedance, so that the wire can transmit signals at high speed and high quality.

To sum up, the utility model discloses a beneficial technological effect does:

1. the copper wire core is protected by sequentially coating the tin layer, the primer layer, the polyimide paint layer, the glass fiber layer and the insulating layer on the outer side of the copper wire core, the polyimide paint layer improves the heat resistance of the wire rod, and the service life of the wire rod is prolonged; the arrangement of the protection strip can further protect the wire, prevent the wire from being damaged or broken when being bent for a long time, and prevent the insulating layer from being damaged due to abrasion;

2. the epoxy resin material of the primer layer has good heat resistance, so that the heat resistance of the wire can be further improved, and the practical life of the wire is prolonged;

3. the polyester-imide resin material of the insulating layer has excellent heat resistance and thermal property, and has good chemical stability, so that the service life of the wire rod is further prolonged;

4. the silicon rubber material of the protective strip has outstanding heat resistance, good thermal stability, difficult aging, good air permeability and convenient heat dissipation of wires.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a copper wire core; 2. a tin layer; 3. a primer layer; 4. a polyimide paint layer; 41. a polyimide single paint layer; 5. a glass fiber layer; 6. an insulating layer; 7. and (4) a protective strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a 220 grade high temperature resistant polyimide enameled round copper wire, include the copper core 1 that is formed by many copper wire winding, the outside cladding in proper order of copper core 1 has tin layer 2, priming paint layer 3, polyimide lacquer layer 4, glass fiber layer 5 and insulating layer 6. In this embodiment, the copper wire core 1 is an oxygen-free copper material, and the oxygen-free copper has the advantages of high conductivity, corrosion resistance, high temperature resistance, long service life, and extremely low electrical impedance, so that the wire can transmit signals at high speed and high quality.

In this embodiment, the thickness of the tin layer 2 is 0.025mm and is coated outside the copper wire core 1 by electroplating, and the tin layer 2 is used for protecting the copper wire core 1, so as to prevent the copper wire core 1 from being oxidized or corroded. Tin layer 2's thickness sets up to 0.025mm and can enough carry out good protection to copper conductor core 1, and tin layer 2 is too thick and leads to tin layer 2 damaged when avoiding copper conductor core 1 to buckle again. Tin layer 2 adopts the cladding of electroplated mode can improve the cladding compactness of tin layer 2 in copper core 1's the outside, has improved tin layer 2 and has kept evenly to copper core 1's protection effect, and the mode of electroplating simultaneously also can make the cladding thickness of tin layer 2 keep even, avoids follow-up outer cladding to receive the influence.

The primer layer 3 is made of epoxy resin, the thickness of the primer layer 3 is 0.035mm, and the epoxy resin has good heat resistance, so that the heat resistance of the wire can be improved, and the service life of the wire is prolonged. The thickness of priming paint layer 3 sets up to 0.035mm and can save priming paint when guaranteeing to carry out better protection to copper core 1, practices thrift manufacturing cost.

Referring to fig. 1 and 2, the polyimide paint layer 4 is composed of a plurality of polyimide single paint layers 41, the number of the polyimide single paint layers 41 in the embodiment is ten, the thickness of each polyimide single paint layer 41 is 0.003-0.005 mm, and the thermal grade of the polyimide single paint layer 41 is 220. The polyimide paint layer 4 has excellent heat resistance, electrical insulation, mechanical property and chemical stability, can well protect the copper wire core 1, further improves the heat resistance of the wire rod, and prolongs the service life of the copper wire core 1.

The glass fiber layer 5 has good insulativity, heat resistance and corrosion resistance, improves the heat resistance of the wire, and can well protect the copper wire core 1 and the polyimide paint layer 4, so that the damage of the copper wire core 1 caused by the damage of the paint layer is avoided.

The insulating layer 6 is made of polyester-imide resin, the polyester-imide resin has excellent heat resistance and thermal property, the heat resistance of the wire is further improved, meanwhile, the polyester-imide resin has good chemical stability, and the service life of the wire is prolonged.

Referring to fig. 1, the outside of insulating layer 6 has protective strip 7 along the radial bonding that encircles of copper core 1 to protect the wire rod, take place damage or fracture when preventing that the wire rod from buckling for a long time, also improved the wear resistance of wire rod simultaneously, prevent that insulating layer 6 from receiving wearing and tearing and damage. In this embodiment, the protection strip 7 is made of a silicon rubber material, and the silicon rubber has outstanding heat resistance, good thermal stability, is not easy to age, and has good air permeability, thereby facilitating heat dissipation of the wire.

The implementation principle of the embodiment is as follows: the copper wire core 1 is protected by sequentially coating the tin layer 2, the primer layer 3, the polyimide paint layer 4, the glass fiber layer 5 and the insulating layer 6 on the outer side of the copper wire core 1, the polyimide paint layer 4 has excellent heat resistance, electrical insulation, mechanical property and chemical stability, the heat resistance of the wire is improved, meanwhile, the copper wire core 1 can be well protected, and the service life of the copper wire core 1 is prolonged; the glass fiber layer 5 has good insulativity, heat resistance and corrosion resistance, so that the copper wire core 1 and the polyimide paint layer 4 are protected, the copper wire core 1 is prevented from being damaged due to damage of the paint layer, and meanwhile, the heat resistance of the wire is improved; the polyester-imide resin material of the insulating layer 6 has excellent heat resistance and excellent thermal property, and further improves the heat resistance of the wire.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a high temperature resistant polyimide enameled copper round wire of 220 grades, includes copper core (1) that the winding of many copper wires formed, its characterized in that: the outside of copper core (1) has cladding in proper order tin layer (2), priming paint layer (3), polyimide lacquer layer (4), glass fiber layer (5) and insulating layer (6), polyimide lacquer layer (4) comprises a plurality of polyimide single lacquer layers (41), the thickness of polyimide single lacquer layer (41) is 0.003 ~ 0.005mm, the heat level of polyimide single lacquer layer (41) is 220 grades, the outside of insulating layer (6) is followed the radial surrounding of copper core (1) has protection strip (7).

2. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 1, wherein: the tin layer (2) is coated on the outer side of the copper wire core (1) through electroplating.

3. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 2, wherein: the thickness of the tin layer (2) is 0.02-0.03 mm.

4. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 1, wherein: the primer layer (3) is epoxy resin.

5. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 4, wherein: the thickness of the primer layer (3) is 0.03-0.04 mm.

6. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 1, wherein: the insulating layer (6) is made of polyester-imide resin.

7. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 1, wherein: the protective strip (7) is made of silicon rubber.

8. The class 220 high temperature resistant polyimide enameled round copper wire as claimed in claim 1, wherein: the copper wire core (1) is made of oxygen-free copper material.