JP2567225Y2 - PVC wire - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyvinyl chloride electric wire, and more particularly, to an insulator which can be extruded at a low temperature and in a short time.
The present invention relates to a vinyl chloride electric wire coated on a conductor .

[0002]

2. Description of the Related Art Insulated wires, cables and the like coated with a synthetic resin have been increasing because of their good insulation performance. As a synthetic resin used for insulating such electric wires and cables, a vinyl chloride resin is mainly used. As the polyvinyl chloride resin, soft polyvinyl chloride is used because it is mechanically quite strong, has flame retardancy, has good chemical resistance and electrical properties, is free to be colored, and is easy to machine.

Conventionally, a vinyl chloride resin composition constituting an insulator is prepared by adding 40 to 200 parts by weight of a plasticizer, 0 to 20 parts by weight of a stabilizer, and 0 to 100 parts by weight of a viscosity modifier to 100 parts by weight of an emulsion polymerized vinyl chloride resin. Parts are mixed. When such a vinyl chloride resin is coated on a conductor or as a sheath, a gel of paste vinyl chloride resin is extruded and coated using an extruder.

[0004]

The paste vinyl chloride resin is gelled at the time of extrusion coating, and when the gelation is carried out, the paste vinyl chloride resin is gelled.
It is necessary to heat at 40 ° C. for about 10 minutes. However, there is a problem that the synthetic resin is decomposed due to dehydrochlorination due to heat applied for gelling at the time of extrusion coating, and the synthetic resin is deteriorated to cause a decrease in insulation. The decomposition of the synthetic resin is caused by the degree of the external heating temperature, and the degree of the heating is determined by the applied temperature and time.
That is, even if the externally applied heating temperature is low, if the heating time is long, dehydrochlorination occurs to cause decomposition, and if the externally applied heating time is too high, the dehydrochlorination occurs to cause decomposition.

Therefore, when gelling the paste vinyl chloride resin, it is required to reduce the heating temperature applied from outside of the paste vinyl chloride resin and to shorten the heating time. However, conventionally, it has not been possible to lower the heating temperature applied from the outside of the paste vinyl chloride resin and to shorten the heating time.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a paste which is a material for an insulator of a polyvinyl chloride electric wire.
When extruding and coating the vinyl chloride resin , the heating temperature to be applied to the paste vinyl chloride resin from the outside is made lower than before, and the heating time is made shorter than before so that the paste chloride
Extrude the resin onto the conductor as an insulator.
That it is intended to provide a vinyl chloride wire.

[0007]

In order to achieve the above object, the vinyl chloride electric wire according to the present invention comprises emulsion polymerization chloride.
100 to 100 parts by weight of vinyl resin, 40 to 200 parts by weight of plasticizer
Parts, 0-20 parts by weight of stabilizer, 0-100 parts by weight of viscosity modifier
Parts and mix 10 to 100 parts by weight of liquid epoxy resin.
After mixing, 10 to 100 parts by weight of amines are mixed. A paste of vinyl chloride resin composition is used as an insulator on a conductor.
Is obtained by constituting extrusion coated to the.

[0008]

[0009]

[Function] A liquid epoxy resin is mixed with an emulsion-polymerized vinyl chloride resin to which a plasticizer, a stabilizer and a viscosity modifier have been added, and an amine is added at the time of extrusion coating, and heat is applied from the outside to gelate the electric wire. Covered as an insulator and an insulating sheath. When an amine such as polyamide is added to an emulsion-polymerized vinyl chloride resin mixed with a liquid epoxy resin, an exothermic reaction occurs between the liquid epoxy resin and the amine, and the heat generated by this reaction is added. About 5 minutes of heat at 120 ° C. is sufficient.

[0010]

Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of a vinyl chloride electric wire according to the present invention.

In the figure, reference numeral 1 denotes a vinyl chloride electric wire.
Reference numerals 2 and 3 denote conductors. The conductor 2 is covered with an insulator 4, and the conductor 3 is covered with an insulator 5.
Reference numeral 6 denotes a sheath that covers the two electric wires.

The insulator 4 is made of an emulsion polymerized vinyl chloride resin 10
0 parts by weight, 40 to 200 parts by weight of a plasticizer, and 0 to 2 parts of a stabilizer.
0 parts by weight, 0 to 100 parts by weight of a viscosity modifier, 10 to 100 parts by weight of a liquid epoxy resin, and 10 to 100 parts by weight of amines are mixed. The plasticizer is, for example, a phthalic acid-based plasticizer. Stabilizers are specifically Pb, Ba,
Any of Ca, Zn, Sn, epoxy and the like, or a mixture of two or more thereof. The viscosity modifier is, specifically, any one of calcium carbonate, aluminum stearate, silicon oxide, magnesium hydroxide, alumina, clay, and amine-modified montmorillonite, or a mixture of two or more. The specific composition of the insulator 4 is as shown in Table 1.

[0013]

[Table 1]

In Table 1, among the paste vinyl chloride resin compositions, an emulsion polymerized vinyl chloride resin, a plasticizer, a stabilizer,
The viscosity modifier is the same as the paste vinyl chloride resin composition constituting the conventional insulator. In this embodiment, a liquid epoxy resin and amines are mixed with a conventional paste vinyl chloride resin composition constituting an insulator.

In the present embodiment, the mixing amount of the liquid epoxy resin is set to 10 to 100 parts by weight. When the mixing amount of the liquid epoxy resin is less than 10 parts by weight, the amount of self-generated heat is small, and the heat applied from the outside is low. This is because there is no effect. On the other hand, if the mixing amount of the liquid epoxy resin exceeds 100 parts by weight, the self-heating value increases, the duration of the self-heating increases, and after extrusion coating, it takes time to solidify and the insulating material is deformed. This is because there are times.

Further, in this embodiment, the mixing amount of the amines is set to 10 to 100 parts by weight. When the mixing amount of the amines is less than 10 parts by weight, the amount of self-generated heat generated by the reaction with the liquid epoxy resin is reduced. This is because there is little effect to lower the heat applied from the outside. In addition, the mixing amount of amines is 10
If the amount exceeds 0 parts by weight, the amount of self-heating generated by reaction with the liquid epoxy resin increases, the duration of self-heating increases, and after extrusion coating, it takes time to solidify and the insulating material is deformed. Because there is.

[0017] this liquid epoxy resin and amine are suitable amount of a plasticizer, a stabilizer, rather than simultaneously mixed into a paste vinyl chloride resin composition prepared by adding a viscosity modifier, leave premixed liquid epoxy resin , Liquid epoxy resin
The amines are mixed just before the mixed paste vinyl chloride resin composition is gelled. Thus liquid epoxy
The paste vinyl chloride resin composition that is mixed with the resin to mix an amine just prior to gelling, a suitable amount of a plasticizer and a liquid epoxy resin and an amine, stabilizer was added viscosity modifier paste chloride When mixed with the vinyl resin composition at the same time, when mixed with the paste vinyl chloride resin composition, the liquid epoxy resin reacts with the amines to generate a self-heating action, causing the paste vinyl chloride resin composition to gel and the conductor 2 This is because when the film is coated in (3), it starts to be cooled and solidified, and the extrusion does not work well.

[0018]

The present invention is configured as described above, and has the following effects.

Since the present invention is configured as described above, the following effects can be obtained. In the vinyl chloride electric wire according to claim 1, 100 parts by weight of an emulsion-polymerized vinyl chloride resin.
40 to 200 parts by weight of a plasticizer and 0 to 20 parts by weight of a stabilizer
Parts by weight, 0-100 parts by weight of a viscosity modifier,
After mixing 10 to 100 parts by weight of the resin, the amines 10
<br/> paste vinyl chloride resin composition obtained by mixing 100 parts by weight are coated extruded onto the conductor as an insulator for a paste salts is the material of the insulator vinyl chloride wire
When extruding and coating vinyl chloride resin , the heating temperature applied to the paste vinyl chloride resin from the outside should be lower than before, and the heating time should be shorter than before, so that the paste vinyl chloride resin
The resin can be extruded and coated on the conductor as an insulator .

[0020]

[Brief description of the drawings]

FIG. 1 is a sectional perspective view showing an embodiment of a vinyl chloride electric wire according to the present invention.

[Explanation of symbols]

1 ………………………………………………………………………………………………………………………………………………………… Conductors 4,5… ………………………………………………………………………………………………………… Sheath.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H01B 3/44 H01B 3/44 P 13/14 13/14 Z

Claims (1)

(57) [Scope of request for utility model registration] 1. 100 parts by weight of an emulsion-polymerized vinyl chloride resin
40 to 200 parts by weight of a plasticizer and 0 to 20 parts by weight of a stabilizer
Parts by weight, 0-100 parts by weight of a viscosity modifier,
After mixing 10 to 100 parts by weight of the resin, the amines 10
A polyvinyl chloride electric wire obtained by extruding and coating a paste of polyvinyl chloride resin composition as an insulator on a conductor by mixing 100 to 100 parts by weight .