JP2002358833A - Cable having different kinds of insulators - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable having different kinds of insulators with excellent insulation property, abrasion resistant property, and heat resistant property without becoming thick. SOLUTION: For the cable with a conductor covered by a plurality of insulation layers, the conductor is covered by either two or more of insulation layers overlapping one on the other, chosen from insulation layers a, b, c, of which, main part is made of thermoplastic polyester elastomer, polyphenylene sulfide, or polyamide 6T or polyamide 9T respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heterogeneous insulated wire.

[0002]

2. Description of the Related Art An insulated wire is composed of a conductor through which electricity flows and an insulator which prevents leakage of electricity around the conductor. Conventional insulated wires have a conductor with enamel or a multi-layer insulator by laminating multiple insulating layers on the conductor.Plastic materials such as rubber in the past and now polyester and nylon are used as the main insulating member. Is used. Insulated wires of conductors covered with insulators are stipulated in the Electrical Appliance and Material Control Law and JIS. International standards include IEC (International Electrotechnical Commission) Standard 60950: 1999 and Annex U2.10.5 Paragraph .4 specifies reinforced electric wires (three layers of spirally wound insulation or three layers of extrusion insulation).

[0003]

For example, in an electromagnetic coil in which an enameled wire is used as a winding of a transformer, the enameled wire has poor insulation due to pinholes, has poor abrasion resistance, and is easily peeled off. There was a problem, and high-speed winding work with an automatic winding machine was not possible.

In an electromagnetic coil made of a conductor having a multilayer insulator, the insulation (voltage resistance), wear resistance, and the like of an enameled wire can be improved. Was of such a degree as to make up for the disadvantages of the conventional product or to have self-fusing properties. It is made of polyester, polyethersulfone or polyetherimide, etc., with fillers added to enhance the properties of each.Since it functions as an insulating material when used alone, it is combined with other resins to form a multilayer. meaningless. That is, even if it is a multilayer, it is not expected that the characteristic value is remarkably improved. Further, those having excellent withstand voltage as the insulating material were inferior in wear resistance, and those having excellent wear resistance had advantages and disadvantages such as lack of flexibility or heat resistance.

Accordingly, an object of the present invention is to provide a heterogeneous insulated wire having extremely excellent insulation, abrasion resistance and heat resistance without increasing the thickness of the insulator.

[0006]

In order to achieve the above object, a heterogeneous combination insulated wire according to the present invention is a heterogeneous combination insulated wire in which a conductor is covered with a plurality of insulating layers. The main component is a layer obtained by laminating and coating at least two layers of an insulating layer made of a thermoplastic polyester elastomer, polyphenylene sulfide, polyamide 6T or polyamide 9T, respectively.

A heterogeneous combination insulated wire in which a conductor is covered with a plurality of insulating layers, wherein the conductor is mainly composed of thermoplastic polyester elastomer, polyether sulfone, polyamide 6T or polyamide 9T;
Any two or more of the insulating layers made of each are covered and covered.

A heterogeneous insulated wire in which a conductor is covered with a plurality of insulating layers, wherein the conductor has an insulating layer composed mainly of polyimide, polyethersulfone, polyamide 6T or polyamide 9T. Two or more of these layers are overlaid and covered.

A heterogeneous insulated wire in which a conductor is covered with a plurality of insulating layers, wherein the main component is any one of an insulating layer made of a thermoplastic polyester elastomer, polyphenylene sulfide, polyamide 6T or polyamide 9T. A second insulating layer in which two or more of a first insulating layer in which two or more layers are stacked and an insulating layer in which a main component is formed of a thermoplastic polyester elastomer, polyether sulfone, polyamide 6T or polyamide 9T, respectively. A first insulating layer including a layer and a third insulating layer in which any two or more of the insulating layers each including polyimide, polyether sulfone, polyamide 6T, or polyamide 9T, each of which is a main component,
Two or more layers of the second insulating layer and the third insulating layer are formed by covering the above-mentioned conductor in an overlapping manner.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

Insulated wires of different types are mainly used as electromagnetic coils (windings) of micro-transformers incorporated in IT (information technology) industrial equipment such as interface peripheral devices such as personal computers and mobile phones, control inverters, and the like. It is about.

At present, as the required quality of the insulated wire of the user, the wear resistance is 100 times or more in the wear resistance test, and the breakdown voltage in the withstand voltage test is 20000 V or more. As the conductor 1 for conducting electricity, there is a metal copper wire or the like, and the metal wire includes a surface coated with tin plating or enamel. The size (diameter) of the conductor 1
Can be used with a fine line of 0.2 mm to 1.0 mm.

The single physical properties of the polymer material used as the insulating layer will be described below. Regarding the physical properties of the thermoplastic polyester elastomer (TPEE) used as the insulating layer, the extrusion temperature is 265 ° C. and the extrusion processability is good. Excellent wear resistance and good dielectric breakdown resistance. On the other hand, cracks occur weakly in heat resistance and flame resistance, and they are hydrolyzed by moisture. Further, the workability at the time of winding is good.

Regarding the physical properties of polyphenylene sulfide (PPS), the extrusion temperature is 325 ° C. and the extrusion processability is good.
Further, it has a characteristic that it has higher heat resistance than other insulating materials and does not hydrolyze with moisture. However,
The abrasion resistance and dielectric breakdown resistance are inferior to, for example, polyethylene terephthalate (PET).

The physical properties of polyamide 6T (PA6T) are as follows: extrusion temperature is 325 ° C., extrudability is good, abrasion resistance,
The dielectric breakdown resistance is good. Polyamide 9T (PA9
Regarding the physical properties of T), the extrusion temperature is 330 to 340 ° C., the extrusion processability is poor, and there is a drawback that it is harder and brittle than PA6T. P
A6T is softer than PA9T,
Other physical properties of PA9T are not much different from PA6T.

As for the physical properties of polyethersulfone (PES), the extrusion temperature is 360 ° C. and the extrusion processability is good. Although it is particularly excellent in heat resistance, it has a fatal drawback that when a finished product coated with this PES as an insulating layer of an electric wire is bent at an acute angle and the fold becomes white (the tissue is destroyed and becomes white). Cannot be used.

The properties of polyimide (PI) are as follows.
It is 420 ° C and extrudability is good. In particular, it has excellent heat resistance, but has no compatibility with other resins, so that the insulating layer is easily peeled off, which is expensive and costly.

Next, a multilayer insulated wire 2 based on a multilayer combination of polymer materials will be described. In the present invention, a combination of a material having particularly excellent withstand voltage, a material having particularly excellent wear resistance, a material having particularly excellent heat resistance, and a material having particularly excellent wrapping heatability (the property of not cracking) is formulated. Thus, a multilayer is formed.

Heat resistance As a multilayer insulated wire of 120 ° C. type, as shown in FIGS. 1 and 2, the conductor 1 has an insulating layer whose main component is made of thermoplastic polyester elastomer (TPEE) from the inside to the outside. a, an insulating layer b made of polyphenylene sulfide (PPS);
Polyamide 6T (PA6T) [or Polyamide 9T (P
A9T)] to form an insulating layer c on top of one another (this is referred to as heterogeneous combination A). Also,
This multi-layer configuration is based on TPEE, PPS, PA6T (or P6
A9T) may be composed of any two of the insulating layers, and the combination is free.

Heat resistance As a multilayer insulated wire of 130 ° C. type, as shown in FIGS. 3 and 4, the conductor 1 has an insulating layer whose main component is made of thermoplastic polyester elastomer (TPEE) from inside to outside. a, polyether sulfone (PES) insulating layer d, polyamide 6
An insulating layer c made of T (PA6T) [or polyamide 9T (PA9T)] is laminated and covered in a laminated manner (this is referred to as heterogeneous combination B). Further, the multilayer structure may be formed of any two layers of insulating layers of TPEE, PES, PA6T (or PA9T), and the combination is free.

Heat resistance As shown in FIGS. 5 and 6, a multi-layer insulated wire of 155 ° C. type is provided on the conductor 1 from the inner side to the outer side, the insulating layer e having a main component of polyimide (PI), An insulating layer d made of ether sulfone (PES) and an insulating layer c made of polyamide 6T (PA6T) [or polyamide 9T (PA9T)] are stacked and coated in a laminated manner (this is combined with a heterogeneous combination C). Do). Also, this multi-layer structure is composed of PI, PES, PA6T
(Or PA9T) made of any two of the insulating layers, and the combination is free. The order of the heterogeneous combinations A, B, and C from the inside to the outside of the laminated insulating layers may be other than the example shown in the drawings, and the change is free.

In another embodiment, the main component is a thermoplastic polyester elastomer (TP).
EE), insulating layer b made of polyphenylene sulfide (PPS), polyamide 6T (PA6)
T) [or an insulating layer c made of polyamide 9T (PA9T)], and the first insulating layer L
To form Next, an insulating layer a whose main component is made of a thermoplastic polyester elastomer (TPEE),
An insulating layer d made of polyethersulfone (PES);
Polyamide 6T (PA6T) [or Polyamide 9T (P
A9T)], the second insulating layer M is formed by laminating any two or more of the insulating layers c. Next, an insulating layer e composed mainly of polyimide (PI), an insulating layer d composed of polyethersulfone (PES), polyamide 6T
A third layer formed by stacking any two or more of the insulating layers c made of (PA6T) [or polyamide 9T (PA9T)].
An insulating layer N is formed. Then, as shown in FIGS. 7 and 8, the first insulating layer L, the second insulating layer M, and the third insulating layer N are laminated on the conductor 1 so as to cover the conductor 1. Heterogeneous combination D). Further, the composite multilayer structure may be constituted by any two layers of the first insulating layer L, the second insulating layer M, and the insulating layer formed by the third insulating layer N, and the combination is free.

The order of the composite heterogeneous combination D from the inside to the outside of the insulating layers to be laminated may be other than the example shown in the drawing.
The change is free. The insulating material forming the insulating layer may include an alloy or another mixture. That is, for example, the main component referred to here is a thermoplastic polyester elastomer (TPEE).
Even if a small amount of other substances are mixed in PEE,
PEE refers to a substance that forms a main component (main component) as an active ingredient. The same applies to the polymer material forming another insulating layer.

Generally, as the thickness of the insulator of the electric wire increases, the characteristics thereof are strengthened and improved. However, since the enamel wire is conventionally used in the electromagnetic coil, the insulated wire of the different combination of the present invention has the same size.
The thickness of the insulating layer is up to 0.1 mm, and in the case of a three-layer combined insulator, the thickness of one layer is 0.033 mm.

In Table 1 below, using a soft copper wire whose conductor 1 has a diameter of 0.4 mm, the total thickness of the insulating layer is set to 0.1 mm, and TPEE, PPS, and PA6T constituting the above-described heterogeneous combination A are individually used. The results of a withstand voltage test and a wear resistance test when the product is covered with (one type of insulator) are shown.

[0026]

[Table 1]

Tables 2, 3 and 4 below show conductor 1
Using a 0.4 mm soft copper wire, the TP
When two of the insulating layers a, b, and c of EE, PPS, and PA6T are overlaid with each layer having a thickness of 0.05 mm to form a product having a total insulating layer thickness of 0.1 mm. 3 shows the results of a withstand voltage test and a wear resistance test of Example 1.

[0028]

[Table 2]

[0029]

[Table 3]

[0030]

[Table 4]

Table 5 below shows that the conductor 1 was made of a 0.4 mm soft copper wire, and the TPEE, PP
The results of the withstand voltage test and the abrasion resistance test when S and PA6T were coated at 0.033 mm each to give a product having a total thickness of the insulating layer of 0.1 mm are shown.

[0032]

[Table 5]

According to the results of Table 1 and Tables 2 to 5, even if the insulating layers have the same thickness, the multilayer insulator composed of the heterogeneous combination A is 2 to 4 times as large as the case where the single insulating layer is formed. Withstand voltage and abrasion resistance.

Also, the heterogeneous combination B and the heterogeneous combination C
Table 1 and Tables 2 to 5
This is almost the same result.

The dielectric layer obtained by further laminating the insulating layers formed by the heterogeneous combination A, the heterogeneous combination B and the heterogeneous combination C, that is, the withstand voltage test result in the case of the composite heterogeneous combination D is shown by the dielectric breakdown. Exceeded 30,000 V, and exceeded 700 times in the abrasion resistance test. That is, even if the thickness of the insulating layer is the same, the withstand voltage and abrasion resistance are three times or more that of the single insulating layer in Table 1.

The heterogeneous insulated wire according to the present invention has voltage resistance and insulation resistance, abrasion resistance and heat resistance enough to withstand an automatic winding machine, and the insulator melts at a temperature of 410 ° C. of the solder and the solder is formed on the conductor. The multilayer insulated wire 2 is provided with solder melting property to be attached, winding heating property (property not to crack), and flexibility.

By making the different insulating layers of the present invention into multiple layers, it is possible to exhibit the maximum properties by the pharmacological effect of the combination of the polymer materials having different properties.
When the outermost insulation layer is attacked by external factors such as ultraviolet rays, high temperature, cold, chemicals, etc., the lower layer of different materials protects it, and when the insulation layer of the electric wire has a three-layer structure, If a layer is breached, the next lower layer can protect it. That is, by using a plurality of insulating layers made of different materials, extremely excellent characteristics are exhibited.

The heterogeneous combination insulated wire is not only composed of the above-mentioned polymer compound, but may be further provided with another tape as an insulating layer or a protective layer of the conductor 1. Further, if necessary, an exterior for protecting the insulated wire may be provided.

[0039]

According to the present invention, the following effects can be obtained by the above configuration.

According to claims 1, 2 and 3, the pharmacological effect of a prescription combining different polymer materials without increasing the thickness of the insulating layer makes it possible to reduce the number of insulated wires compared to using a single material. Double characteristics (particularly withstand voltage, abrasion resistance, heat resistance) can be exhibited. Therefore, a thin insulated wire having high voltage resistance and extremely excellent performance can be obtained.

According to the fourth aspect, the pharmacological effect of a prescription combining different polymer materials without increasing the thickness of the insulating layer further increases the characteristics of the insulated wire several times more than using a single material. (Particularly, withstand voltage, abrasion resistance, and heat resistance). Therefore, with high withstand voltage,
It is possible to make a thin insulated wire with extremely excellent performance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a heterogeneous combination insulated wire of the present invention.

FIG. 2 is an explanatory view of a heterogeneous combination insulated wire of the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the heterogeneous combination insulated wire of the present invention.

FIG. 4 is an explanatory view of a heterogeneous combination insulated wire of the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the heterogeneous combination insulated wire of the present invention.

FIG. 6 is an explanatory diagram of a heterogeneous combination insulated wire of the present invention.

FIG. 7 is a sectional view showing still another embodiment of the heterogeneous combination insulated wire of the present invention.

FIG. 8 is an explanatory view of a heterogeneous combination insulated wire of the present invention.

[Explanation of symbols]

 Reference Signs List 1 conductor a insulating layer b insulating layer c insulating layer d insulating layer e insulating layer L first insulating layer M second insulating layer N third insulating layer

Claims (4)

[Claims] 1. An insulated wire of a different kind in which a conductor 1 is covered with a plurality of insulating layers, wherein the conductor 1 is mainly composed of thermoplastic polyester elastomer, polyphenylene sulfide, polyamide 6T or polyamide 9
T, any one of insulating layers a, b, and c made of each
A heterogeneous combination insulated wire, characterized in that at least one layer is covered and covered. 2. A heterogeneous insulated wire in which a conductor 1 is covered with a plurality of insulating layers, wherein the conductor 1 is mainly composed of thermoplastic polyester elastomer, polyether sulfone, polyamide 6T or polyamide 9T;
A heterogeneous combined insulated wire characterized in that any two or more of the insulating layers a, d, and c are overlapped and covered. 3. An insulated wire of a different kind in which a conductor 1 is covered with a plurality of insulating layers, wherein the conductor 1 has a main component of polyimide, polyether sulfone, polyamide 6T or polyamide 9T. A heterogeneous combination insulated wire, characterized in that two or more layers e, d and c are overlaid and covered. 4. A heterogeneous insulated wire in which a conductor 1 is covered with a plurality of insulating layers, wherein the main components are thermoplastic polyester elastomer, polyphenylene sulfide, polyamide 6T or polyamide 9T, and insulating layers a, b and c, an insulating layer a made of a thermoplastic plastic polyester elastomer, polyether sulfone, polyamide 6T or polyamide 9T, and an insulating layer a,
a second insulating layer M in which any two or more layers of d and c are stacked
And the main component is polyimide, polyether sulfone,
A first insulating layer L, a second insulating layer M, and a third insulating layer N in which any two or more of the insulating layers e, d, and c each made of polyamide 6T or polyamide 9T are stacked;
Any two or more of the third insulating layers N
And a multi-layer insulated wire characterized by being covered with a superimposed wire.