阅读说明：本技术 一种自粘式漆包线及其生产工艺 (Self-adhesive enameled wire and production process thereof ) 是由 谢进雄 林世伟 叶屹峰 方远钦 王明川 陆胜云 杨军 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种自粘式漆包线,所述导体线芯的表面设置有自粘漆层,按照质量份数计,所述自粘漆层的配方包括如下组分：酚醛树脂、间甲酚、甘油、炭黑、聚酰胺树脂、二甲苯、聚甲基丙烯酸酯、200号溶剂汽油等组分,另外还提出自粘式漆包线的生产工艺。本发明提出的自粘式漆具有良好的绝缘性、耐油性,对铜线有良好的附着力,丰富油漆的功能,相对于现有的普通自粘漆包线而言,本发明的自粘漆包线的表面具有更强的耐刮力和更好的滑性,因此其更接近现代电机行业对漆包线所提出的要求；另外提出的包括放线、退火、涂漆等步骤,通过重复涂漆、烘焙、冷却等步骤在导体线芯的表面涂覆多层自粘漆,从而获得性能更优良的漆包线。(The invention discloses a self-adhesive enameled wire, wherein a self-adhesive paint layer is arranged on the surface of a conductor wire core, and the self-adhesive paint layer comprises the following components in parts by mass: phenolic resin, m-cresol, glycerol, carbon black, polyamide resin, dimethylbenzene, polymethacrylate, No. 200 solvent gasoline and the like, and also provides a production process of the self-adhesive enameled wire. The self-adhesive paint provided by the invention has good insulativity and oil resistance, has good adhesive force to copper wires, enriches the functions of paint, and has stronger scratch resistance and better smoothness on the surface compared with the existing common self-adhesive enameled wire, so that the self-adhesive enameled wire is closer to the requirements of the modern motor industry on the enameled wire; in addition, the steps of paying off, annealing, painting and the like are provided, and the surface of the conductor wire core is coated with a plurality of layers of self-adhesive paints through repeating the steps of painting, baking, cooling and the like, so that the enameled wire with better performance is obtained.)

1. The self-adhesive enameled wire comprises a conductor wire core and is characterized in that a self-adhesive paint layer is arranged on the surface of the conductor wire core, and the self-adhesive paint layer comprises the following components in parts by mass:

14.5 to 15.5 portions of phenolic resin, 9.5 to 10.5 portions of m-cresol, 4.5 to 5.5 portions of glycerol, 4.5 to 5.5 portions of carbon black, 4.5 to 5.5 portions of polyamide resin, 9.5 to 10.5 portions of dimethylbenzene, 1.5 to 2.5 portions of polymethacrylate, 0.5 to 1.5 portions of methyl silicone oil, 0.5 to 1.5 portions of diaminodiphenyl ether, 14.5 to 15.5 portions of tung oil, 49.5 to 50.5 portions of No. 200 solvent gasoline and 2.5 to 3.5 portions of zinc oxide.

2. The self-adhesive enameled wire according to claim 1, characterized in that: the conductor wire core is set to have the purity of more than 99.95 percent, the conductivity of more than 98 percent and the resistivity of hard copper of not more than 0.01796 omega mm²The resistivity of the soft copper is not more than 0.017241 omega mm²The wire is an industrial pure copper wire with the elongation of soft copper being not less than 30%, and the diameter of the conductor wire core is 0.3-0.4 mm.

3. The self-adhesive enameled wire according to claim 2, characterized in that: the surface of the conductor wire core is provided with at least one self-adhesive paint layer, and the thickness of one self-adhesive paint layer is 0.01mm-0.015 mm.

4. The self-adhesive enameled wire according to claim 1, characterized in that: the formula of the self-adhesive paint layer comprises the following components in parts by mass: 14.5 parts of phenolic resin, 9.5 parts of m-cresol, 4.5 parts of glycerol, 4.5 parts of carbon black, 4.5 parts of polyamide resin, 9.5 parts of xylene, 1.5 parts of polymethacrylate, 0.5 part of methyl silicone oil, 0.5 part of diaminodiphenyl ether, 14.5 parts of tung oil, 49.5 parts of No. 200 solvent gasoline and 2.5 parts of zinc oxide.

5. The self-adhesive enameled wire according to claim 1, characterized in that: the formula of the self-adhesive paint layer comprises the following components in parts by mass: 15 parts of phenolic resin, 15 parts of m-cresol, 50 parts of glycerol, 3 parts of carbon black, 5 parts of polyamide resin, 5 parts of dimethylbenzene, 10 parts of polymethacrylate, 5 parts of methyl silicone oil, 10 parts of diaminodiphenyl ether, 2 parts of tung oil, 1 part of No. 200 solvent gasoline and 1 part of zinc oxide.

6. The self-adhesive enameled wire according to claim 1, characterized in that: the formula of the self-adhesive paint layer comprises the following components in parts by mass: 15.5 parts of phenolic resin, 10.5 parts of m-cresol, 5.5 parts of glycerol, 5.5 parts of carbon black, 5.5 parts of polyamide resin, 10.5 parts of dimethylbenzene, 2.5 parts of polymethacrylate, 1.5 parts of methyl silicone oil, 1.5 parts of diaminodiphenyl ether, 15.5 parts of tung oil, 50.5 parts of No. 200 solvent gasoline and 3.5 parts of zinc oxide.

7. The production process of the self-adhesive enameled wire according to claim 1, characterized in that: the method comprises the following steps:

step S1, paying off, namely, uniformly paying off the copper materials from the iron shaft, providing raw materials and ensuring the stability of painting, and paying off by a combined wire stretcher on a high-speed machine platform;

step S2, annealing, softening the bare copper wire, removing internal stress in the stretching process, rearranging molecular lattices, and enhancing flexibility and conductivity;

step S3, painting, namely, uniformly painting the insulating paint on the bare copper wire by using a mould or a felt as a medium;

s4, baking, namely evaporating the solvent in the coating to solidify the binder into a film to form an insulating layer; after the solvent is evaporated, the solvent is catalyzed by a catalyst and is converted into carbon dioxide and water, and a large amount of heat is released, so that the effects of environmental protection and energy conservation are achieved;

step S5, cooling, wherein after the wire is baked from the furnace, the wire needs to be cooled when the temperature is high;

step S6, lubricating, namely, a layer of lubricating liquid is required to be added to the cooled enameled wire before large coiling, so that friction of wire operation is reduced when a customer uses the enameled wire, and paying-off is convenient;

and step S7, taking up, wherein after the previous working procedures are finished, the enameled wire is formed and is wound on a plastic shaft.

8. The production process of the self-adhesive enameled wire according to claim 7, characterized in that: the catalyst used in step S4 includes active components (platinum, palladium, and compounds thereof) and a carrier (metal mesh, ceramic).

9. The production process of the self-adhesive enameled wire according to claim 7, characterized in that: the cooling manner of the step S5 is air cooling, and the enameled wire baked from the furnace is cooled by blowing cold air.

10. The production process of the self-adhesive enameled wire according to claim 7, characterized in that: the step S3 includes, before painting, a step of preparing the self-adhesive paint layer, which is performed according to the formula of each component of the self-adhesive paint layer.

Technical Field

The invention belongs to the technical field of self-adhesive enameled wires, and particularly relates to a self-adhesive enameled wire and a production process thereof.

Background

The enameled wire is a main variety of winding wires and consists of a conductor and an insulating layer, and a bare wire is annealed and softened and then is subjected to painting and baking for multiple times. However, it is not easy to produce a product which meets both the standard requirements and the customer requirements, and it is influenced by the quality of raw materials, process parameters, production equipment, environment and other factors, so that the quality characteristics of various enameled wires are different, but the enameled wires have four properties of mechanical properties, chemical properties, electrical properties and thermal properties. The enameled wire is a main raw material of products such as motors, electric appliances, household electric appliances and the like, particularly, the continuous and rapid growth of the power industry is realized in recent years, the rapid development of the household electric appliances brings a wider field for the application of the enameled wire, and along with the realization, higher requirements are put forward on the enameled wire. Therefore, the product structure of the enameled wire is inevitably adjusted, and the raw materials (copper and paint), the enameled process, the process equipment, the detection means and the like matched with the enameled wire are also urgently needed to be developed and researched.

The self-adhesive enameled wire is a special enameled wire, and the manufacturing of the coil is simple and convenient due to the special processing performance of the self-adhesive enameled wire. Wound coils are heat treated or solvent treated to form a coil by adhesion, and are therefore favored for use in the manufacture of various electromagnetic coils of complex shape or without a bobbin. The application of the self-adhesive enameled wire brings remarkable social and economic benefits, can simplify coil forming process, improve work efficiency, save energy, improve environmental pollution and is beneficial to industrial production. At present, the motor manufacturing industry generally adopts high-speed automatic winding equipment to wind a motor coil, so that high requirements are provided for various mechanical properties of an enameled wire, and the high-speed automatic winding equipment requires that the enameled wire has certain mechanical strength, and the surface of the enameled wire has high wear resistance, high scraping resistance and high smoothness. The conventional enameled wire can not meet the requirement, and a self-adhesive enameled wire and a production process thereof are provided for solving the problems in the prior art.

Disclosure of Invention

The invention aims to provide a self-adhesive enameled wire and a production process thereof, which aim to solve the problems in the prior art in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme: the self-adhesive enameled wire comprises a conductor wire core, wherein a self-adhesive paint layer is arranged on the surface of the conductor wire core, and the self-adhesive paint layer comprises the following components in parts by mass:

14.5 to 15.5 portions of phenolic resin, 9.5 to 10.5 portions of m-cresol, 4.5 to 5.5 portions of glycerol, 4.5 to 5.5 portions of carbon black, 4.5 to 5.5 portions of polyamide resin, 9.5 to 10.5 portions of dimethylbenzene, 1.5 to 2.5 portions of polymethacrylate, 0.5 to 1.5 portions of methyl silicone oil, 0.5 to 1.5 portions of diaminodiphenyl ether, 14.5 to 15.5 portions of tung oil, 49.5 to 50.5 portions of No. 200 solvent gasoline and 2.5 to 3.5 portions of zinc oxide.

Preferably, the conductor wire core is set to have the purity of more than 99.95 percent,The conductivity is more than 98 percent, and the resistivity of the hard copper is not more than 0.01796 omega mm²The resistivity of the soft copper is not more than 0.017241 omega mm²The wire is an industrial pure copper wire with the elongation of soft copper being not less than 30%, and the diameter of the conductor wire core is 0.3-0.4 mm.

Preferably, the surface of the conductor wire core is provided with at least one self-adhesive paint layer, and the thickness of one self-adhesive paint layer is 0.01mm-0.015 mm.

Preferably, the formula of the self-adhesive paint layer comprises the following components in parts by mass: 14.5 parts of phenolic resin, 9.5 parts of m-cresol, 4.5 parts of glycerol, 4.5 parts of carbon black, 4.5 parts of polyamide resin, 9.5 parts of xylene, 1.5 parts of polymethacrylate, 0.5 part of methyl silicone oil, 0.5 part of diaminodiphenyl ether, 14.5 parts of tung oil, 49.5 parts of No. 200 solvent gasoline and 2.5 parts of zinc oxide.

Preferably, the formula of the self-adhesive paint layer comprises the following components in parts by mass: 15 parts of phenolic resin, 15 parts of m-cresol, 50 parts of glycerol, 3 parts of carbon black, 5 parts of polyamide resin, 5 parts of dimethylbenzene, 10 parts of polymethacrylate, 5 parts of methyl silicone oil, 10 parts of diaminodiphenyl ether, 2 parts of tung oil, 1 part of No. 200 solvent gasoline and 1 part of zinc oxide.

Preferably, the formula of the self-adhesive paint layer comprises the following components in parts by mass: 15.5 parts of phenolic resin, 10.5 parts of m-cresol, 5.5 parts of glycerol, 5.5 parts of carbon black, 5.5 parts of polyamide resin, 10.5 parts of dimethylbenzene, 2.5 parts of polymethacrylate, 1.5 parts of methyl silicone oil, 1.5 parts of diaminodiphenyl ether, 15.5 parts of tung oil, 50.5 parts of No. 200 solvent gasoline and 3.5 parts of zinc oxide.

The invention also provides a production process of the self-adhesive enameled wire, which comprises the following steps:

step S1, paying off, namely, uniformly paying off the copper materials from the iron shaft, providing raw materials and ensuring the stability of painting, and paying off by a combined wire stretcher on a high-speed machine platform;

step S2, annealing, softening the bare copper wire, removing internal stress in the stretching process, rearranging molecular lattices, and enhancing flexibility and conductivity;

step S3, painting, namely, uniformly painting the insulating paint on the bare copper wire by using a mould or a felt as a medium;

s4, baking, namely evaporating the solvent in the coating to solidify the binder into a film to form an insulating layer; after the solvent is evaporated, the solvent is catalyzed by a catalyst and is converted into carbon dioxide and water, and a large amount of heat is released, so that the effects of environmental protection and energy conservation are achieved;

step S5, cooling, wherein after the wire is baked from the furnace, the wire needs to be cooled when the temperature is high;

step S6, lubricating, namely, a layer of lubricating liquid is required to be added to the cooled enameled wire before large coiling, so that friction of wire operation is reduced when a customer uses the enameled wire, and paying-off is convenient;

and step S7, taking up, wherein after the previous working procedures are finished, the enameled wire is formed and is wound on a plastic shaft.

Preferably, the catalyst used in step S4 includes active components (platinum, palladium and compounds thereof) and a carrier (metal mesh, ceramic).

Preferably, the cooling manner of step S5 is air cooling, and the enameled wire baked from the furnace is cooled by blowing with cold air.

Preferably, the painting of step S3 further includes a step of preparing the self-adhesive paint layer according to the formula of each component of the self-adhesive paint layer.

The invention has the technical effects and advantages that: compared with the prior art, the self-adhesive enameled wire and the production process thereof provided by the invention have the following advantages:

the self-adhesive enameled wire provided by the invention is a self-adhesive paint layer prepared from phenolic resin, m-cresol, glycerol, carbon black, polyamide resin and the like, has good insulativity and oil resistance, has good adhesive force on a copper wire, and enriches the function of paint, and compared with the existing common self-adhesive enameled wire, the surface of the self-adhesive enameled wire provided by the invention has stronger scratch resistance and better slip property, so that the self-adhesive enameled wire is closer to the higher requirement of the modern motor industry on the mechanical property of the enameled wire;

in addition, the method comprises the steps of paying off, annealing, painting, baking, cooling, lubricating and taking up, and the multi-layer self-adhesive paint is coated on the surface of the conductor wire core by repeating the steps of painting, baking, cooling and the like, so that the enameled wire with better performance is obtained.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

FIG. 1 is a schematic structural diagram of a self-adhesive enameled wire according to the present invention;

FIG. 2 is a process flow diagram of the self-adhesive enameled wire production process 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. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. 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.

The present invention provides embodiments as shown in figures 1 and 2:

example 1

The self-adhesive enameled wire comprises a conductor wire core, wherein a self-adhesive paint layer is arranged on the surface of the conductor wire core, and the self-adhesive paint layer comprises the following components in parts by mass:

15 parts of phenolic resin, 15 parts of m-cresol, 50 parts of glycerol, 3 parts of carbon black, 5 parts of polyamide resin, 5 parts of dimethylbenzene, 10 parts of polymethacrylate, 5 parts of methyl silicone oil, 10 parts of diaminodiphenyl ether, 2 parts of tung oil, 1 part of No. 200 solvent gasoline and 1 part of zinc oxide.

The conductor wire core is set to have the purity of more than 99.95 percent, the conductivity of more than 98 percent and the resistivity of hard copper of not more than 0.01796 omega mm²M, resistivity of soft copperGreater than 0.017241 omega mm²The wire is an industrial pure copper wire with the elongation of soft copper being not less than 30%, and the diameter of the conductor wire core is 0.3-0.4 mm.

The surface of the conductor wire core is provided with at least one self-adhesive paint layer, and the thickness of one self-adhesive paint layer is 0.01mm-0.015 mm.

The invention also provides a production process of the self-adhesive enameled wire, which comprises the following steps:

step S1, paying off, namely, uniformly paying off the copper materials from the iron shaft, providing raw materials and ensuring the stability of painting, and paying off by a combined wire stretcher on a high-speed machine platform;

step S2, annealing, softening the bare copper wire, removing internal stress in the stretching process, rearranging molecular lattices, and enhancing flexibility and conductivity;

step S3, painting, namely, uniformly painting the insulating paint on the bare copper wire by using a mould or a felt as a medium;

s4, baking, namely evaporating the solvent in the coating to solidify the binder into a film to form an insulating layer; after the solvent is evaporated, the solvent is catalyzed by a catalyst and is converted into carbon dioxide and water, and a large amount of heat is released, so that the effects of environmental protection and energy conservation are achieved;

step S5, cooling, wherein after the wire is baked from the furnace, the wire needs to be cooled when the temperature is high;

step S6, lubricating, namely, a layer of lubricating liquid is required to be added to the cooled enameled wire before large coiling, so that friction of wire operation is reduced when a customer uses the enameled wire, and paying-off is convenient;

and step S7, taking up, wherein after the previous working procedures are finished, the enameled wire is formed and is wound on a plastic shaft.

The catalyst used in step S4 includes active components (platinum, palladium and compounds thereof) and a carrier (metal mesh, ceramic); the cooling mode of the step S5 adopts air cooling, and the enameled wire baked from the furnace is cooled by blowing cold air; the step S3 includes, before painting, a step of preparing the self-adhesive paint layer, which is performed according to the formula of each component of the self-adhesive paint layer.

After the production of the enamel of the enameled wire is finished, the enamel can be measured in different modes, the enameled wire is one of cables, and the specification of the enameled wire is expressed according to the diameter of a bare copper wire (the unit is mm). The measurement of the specification of the enameled wire is actually the measurement of the diameter of the bare copper wire, and is generally used for measuring a micrometer, the accuracy of the micrometer can reach 0.01mm, and the measurement of the specification (wire diameter) of the enameled wire has a direct measurement method and an indirect measurement method.

Direct measurement: the direct measurement method is to directly measure the diameter of a bare copper wire, and needs to burn off the coat of the enameled wire and adopt a fire burning method. The wire diameter of the enameled wire used by the rotor of the series motor for the electric tool is very small, and the enameled wire needs to be burnt for a plurality of times in a short time when burnt by fire, otherwise the enameled wire can be burnt out and the efficiency is influenced. Wiping the burnt enamel leather clean by cloth after burning, and measuring the diameter of a bare copper wire by a micrometer, wherein the diameter of the bare copper wire is the specification of the enameled wire; the enamel coating of the enameled wire can be an alcohol lamp or a candle.

Indirect measurement method: the indirect measurement method is to measure the diameter of the outer circle of the enameled copper wire (containing the enamel coating) and then obtain data according to the diameter of the outer circle of the enameled copper wire (containing the enamel coating). The method does not need to burn the enamel coating of the enameled wire, and has high efficiency. If the specific type of the enameled copper wire can be known, the specification (wire diameter) of the enameled wire is checked more accurately.

No matter which method is adopted, the wire is straightened before measurement and then measurement is carried out, so that the measurement accuracy is ensured. When the difference of the 3 times of measurement data is large, the wire may not be straightened; direct measurement is generally used for measurement of old wires (removed from burnt windings), and indirect measurement is generally used for measurement of new windings, which is convenient and fast.

Example 2

Different from the embodiment 1, the formula of the self-adhesive paint layer comprises the following components in parts by weight: 14.5 parts of phenolic resin, 9.5 parts of m-cresol, 4.5 parts of glycerol, 4.5 parts of carbon black, 4.5 parts of polyamide resin, 9.5 parts of xylene, 1.5 parts of polymethacrylate, 0.5 part of methyl silicone oil, 0.5 part of diaminodiphenyl ether, 14.5 parts of tung oil, 49.5 parts of No. 200 solvent gasoline and 2.5 parts of zinc oxide.

Example 3

Different from the embodiment 1, the formula of the self-adhesive paint layer comprises the following components in parts by weight: 15.5 parts of phenolic resin, 10.5 parts of m-cresol, 5.5 parts of glycerol, 5.5 parts of carbon black, 5.5 parts of polyamide resin, 10.5 parts of dimethylbenzene, 2.5 parts of polymethacrylate, 1.5 parts of methyl silicone oil, 1.5 parts of diaminodiphenyl ether, 15.5 parts of tung oil, 50.5 parts of No. 200 solvent gasoline and 3.5 parts of zinc oxide.

The component proportions for examples 1-3 are shown in the following table:

in summary, the following steps: the self-adhesive enameled wire provided by the invention is a self-adhesive paint layer prepared from phenolic resin, m-cresol, glycerol, carbon black, polyamide resin and the like, has good insulativity and oil resistance, has good adhesive force on a copper wire, and enriches the function of paint, and compared with the existing common self-adhesive enameled wire, the surface of the self-adhesive enameled wire provided by the invention has stronger scratch resistance and better slip property, so that the self-adhesive enameled wire is closer to the higher requirement of the modern motor industry on the mechanical property of the enameled wire; in addition, the method comprises the steps of paying off, annealing, painting, baking, cooling, lubricating and taking up, and the multi-layer self-adhesive paint is coated on the surface of the conductor wire core by repeating the steps of painting, baking, cooling and the like, so that the enameled wire with better performance is obtained.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.