CN102364587A

CN102364587A - Low-attenuation electric wire cable

Info

Publication number: CN102364587A
Application number: CN2011103270386A
Authority: CN
Inventors: 王国权
Original assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Current assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Priority date: 2011-10-25
Filing date: 2011-10-25
Publication date: 2012-02-29

Abstract

The invention discloses a low-attenuation electric wire cable, which comprises a plurality of transmission conductors, wherein an inner insulating layer is coated on the surface of each transmission conductor; the inner insulating layer consists of natural-color insulating materials which consist of polyolefin insulators; an outer insulating layer is coated on the surface of the inner insulating layer; the outer insulating layer consists of the natural-color insulating materials and plastic color concentrates in percentage by mass; the plastic color concentrates comprise carrier resin, pigments, dispersing agents and synergists; and the thickness of the outer insulating layer is 0.02 to 0.3 mm and 1 to 5 percent of that of the inner insulating layer. By adoption of the low-attenuation electric wire cable, the influence of metal micro-particles, which are distributed around the conductor, in the plastic color concentrates on an electric field can be eliminated, so that the transmission attenuation of the cable is reduced, and the mechanical and physical performance of the insulating layers and the anti-aging performance of light and heat are improved.

Description

The electric wire of low decay

Technical field

The present invention relates to the electric wire field, be specifically related to a kind of electric wire of low decay.

Background technology

The insulation mode of the transmission conductor of existing electric wire has the combination of real core insulation, cellular insulation or real core insulation and cellular insulation.But the insulation mode of most of products is real core insulation; The RM of the insulated single wire of real core insulation mainly adopts colour code: promptly in the electric wire manufacture process; The color masterbatch added according to a certain percentage extrude behind the insulating material, form the panchromatic general insulating barrier of conductor in the transmission conductor surface.Be used for discerning differentiation in the manufacture process and the use of cable.

Cable is a kind of plastic colorant with color masterbatch, and its Main Ingredients and Appearance is toner or inorganic pigment, contains heavy metal element and oxides thereof such as copper, manganese, nickel.

Existing panchromatic general insulation mode, color masterbatch is distributed in whole insulating material, thereby is dispersed throughout in the insulation of electric wire and cable conductor, and its problem that mainly exists is:

1, the vector resin of color masterbatch will pass through when color masterbatch is produced and be heated for the first time; In the course of processing of wire cable insulating layer through receiving once more when hot-extrudable; Thermal degradation and mechanical degradation at first take place in vector resin, and then quicken the ager process of cable conductor insulating barrier.

2, its Main Ingredients and Appearance of coloring pigment in the electric wire color concentrate is toner or inorganic pigment; Chemical element kind contained in the molecule is different, chemical constitution is different; Main performances such as weatherability, chemical-resistant, toxicity exist and are showing difference, and processing forming, the thermo-oxidative stability of the course of processing, the light of use, the oxidation stability performance of painted plastic products produced certain influence.

3, contain heavy metal element and oxides thereof such as copper, manganese, nickel in the colouring agent of cable with color masterbatch, it has photolytic activity, light sensitivity, and catalysis is also accelerated the light aging speed of plastic material, and influences the Electric Field Distribution in the cable, the electric capacity of cable and decay.

Summary of the invention

The object of the invention provides a kind of electric wire of low decay, and this electric wire can be eliminated metal particle in the color masterbatch that is distributed in around the conductor to electric field effects, thereby reduces the transmission attenuation of cable; And the mechanical and physical performance that improves insulating barrier and light, hot ageing resistace.

For achieving the above object; The technical scheme that the present invention adopts is: a kind of electric wire of low decay; Comprise some transmission conductors; This transmission conductor surface is coated with the true qualities Insulation Material of being made up of polyolefin insulation and forms inner insulating layer, and said inner insulating layer surface is coated with external insulation layer, and this external insulation layer is by forming with the material of following quality percentage composition:

True qualities Insulation Material 1%～3%,

Plastic color master material 97%～99%;

Contain vector resin, pigment, dispersant, synergist in the said plastic color master material.

Technique scheme is further improved technical scheme:

In the such scheme, said external insulation layer thickness range: 0.02～0.3 mm, its thickness range are 1%～5% of inner insulating layer thickness.

Because the technique scheme utilization, the present invention compared with prior art has advantage and effect:

The present invention has the advantages that to substitute traditional wire cable insulating mode, can reduce color masterbatch content more than 90%, thereby reduces the cost of insulating material; Color masterbatch only is distributed in the extexine of insulated single wire, eliminates metal particle in the color masterbatch be distributed in around the conductor to electric field effects, reduces the transmission attenuation of cable; Mechanical and physical performance and the light of insulating barrier, the ageing resistace of heat have been improved; And mature production technology is stable, and the performance of products index is improved.

Description of drawings

Accompanying drawing 1 is transmission conductor structural representation in the existing electric wire structure

Accompanying drawing 2 is transmission conductor structural representation in the electric wire structure of the low decay of the present invention.

In the above accompanying drawing: 1, transmission conductor; 2, inner insulating layer; 3, external insulation layer.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Embodiment: a kind of electric wire of low decay; Comprise some transmission conductors 1; This transmission conductor 1 surface is coated with the true qualities Insulation Material of being made up of polyolefin insulation and forms inner insulating layer 2; Said inner insulating layer 2 surfaces are coated with external insulation layer 3, and this external insulation layer 3 is by forming with the material of following quality percentage composition:

True qualities Insulation Material 1%～3%,

Plastic color master material 97%～99%;

Above-mentioned external insulation layer 3 thickness ranges: 0.02～0.3 mm, its thickness range are 1%～5% of inner insulating layer 2 thickness.

Adopt double-layer coextrusion insulated layer production technology, when the wire cable insulating single line is produced, color masterbatch only is arranged at the external insulation layer (Fig. 2) of insulating barrier, inner insulating layer employing true qualities insulating material.The external insulation layer thickness range: 0.02 ㎜～0.3 ㎜, its thickness range are 1%～5% of inner insulating layers; The content of color masterbatch is controlled at external insulation layer structure consumption 1.0%～2.0%.

The wire cable insulating mode of this double-deck real core can reduce color masterbatch content more than 90%, thereby reduces the cost of insulating material; Color masterbatch only is distributed in the extexine of insulated single wire, eliminates metal particle in the color masterbatch be distributed in around the conductor to electric field effects, reduces the transmission attenuation of cable; Mechanical and physical performance performance and the light of insulating barrier, the ageing resistace of heat have been improved; And mature production technology is stable, and the performance of products index meets the products standards requirement.

The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims

1. one kind is hanged down the electric wire of decaying; Comprise some transmission conductors (1); This transmission conductor (1) surface is coated with the true qualities Insulation Material of being made up of polyolefin insulation and forms inner insulating layer (2); It is characterized in that: said inner insulating layer (2) surface is coated with external insulation layer (3), and this external insulation layer (3) is by forming with the material of following quality percentage composition:

True qualities Insulation Material 1%～3%,

Plastic color master material 97%～99%;

2. electric wire according to claim 1 is characterized in that: said external insulation layer (3) thickness range: 0.02～0.3mm, its thickness range are 1%～5% of inner insulating layer (2) thickness.