CN212303158U

CN212303158U - Co-extrusion insulation irradiation cross-linking halogen-free low-smoke flame-retardant fire-resistant wire

Info

Publication number: CN212303158U
Application number: CN201922389194.XU
Authority: CN
Inventors: 苑中才
Original assignee: Linyi Qiyang Cable Co ltd
Current assignee: Linyi Qiyang Cable Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-01-05
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a co-extrusion insulation irradiation cross-linking halogen-free low-smoke flame-retardant fire-resistant electric wire, which comprises four copper conductors, wherein a first co-extrusion insulation layer is wrapped outside each copper conductor; simultaneously, all the first co-extruded insulating layers are wrapped with a compression-resistant insulating sleeve; the resistance to compression insulating cover overcoat is equipped with the mica tape layer, and the mica tape overcoat is equipped with the crowded insulating layer altogether of second, and the crowded insulating layer overcoat is equipped with the copper tape layer altogether of second, and the copper tape overcoat is equipped with the crowded insulating layer altogether of third, and the outer parcel of the crowded insulating layer altogether of third has the surrounding layer, and this crowded insulating irradiation crosslinked material cost of having no steamed low fire-retardant fire-resistant electric wire of cigarette is low altogether, and manufacturing process is simple, and fire-resistant.

Description

Co-extrusion insulation irradiation cross-linking halogen-free low-smoke flame-retardant fire-resistant wire

Technical Field

The utility model relates to a fire-resistant electric wire especially relates to a fire-resistant electric wire of fire-retardant low cigarette of insulating irradiation crosslinked nothing altogether, belongs to wire and cable and makes technical field.

Background

Fire-resistant electric wire, also known as fire-resistant cable, is a cable that can keep a certain time of safe operation under the condition of flame combustion. Fire-resistant cables are widely used in places related to fire safety and fire life saving, such as high-rise buildings, underground railways, underground streets, large power stations, and important industrial and mining enterprises, for example, power supply lines and control lines of emergency facilities such as fire-fighting equipment and emergency guide lamps. Because the requirement for using the fire-resistant electric wire is high, the selection of materials is also harsh, and the manufacturing cost of the fire-resistant electric wire is high, so how to reduce the materials and the manufacturing cost does not influence the using effect is a problem to be considered urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to above-mentioned problem, provide a fire-retardant fire-resistant electric wire of no halogen low cigarette of insulating irradiation crosslinking altogether, this fire-retardant fire-resistant electric wire of no halogen low cigarette of insulating irradiation crosslinking altogether material cost is low, and manufacturing process is simple, and fire-resistant insulating effectual.

In order to achieve the technical purpose, the utility model adopts a co-extrusion insulation irradiation crosslinking halogen-free low-smoke flame-retardant fire-resistant electric wire, which comprises four copper conductors, wherein the outside of each copper conductor is wrapped with a first co-extrusion insulation layer; simultaneously, all the first co-extruded insulating layers are wrapped with a compression-resistant insulating sleeve; resistance to compression insulating cover overcoat is equipped with the mica tape layer, the mica tape overcoat is equipped with the crowded insulating layer altogether of second, the crowded insulating layer overcoat is altogether to the second is equipped with the copper tape layer, the copper tape overcoat is equipped with the crowded insulating layer altogether of third, the outer parcel of the crowded insulating layer altogether of third has the surrounding layer.

As the utility model discloses a preferred, first crowded insulating layer altogether, second crowded insulating layer altogether and third crowded insulating layer is formed by irradiation crosslinked polyethylene and the one-time crowded shaping of steamed low cigarette crosslinked polyolefin altogether.

As a further preferred aspect of the present invention, the compression-resistant insulating sheath is formed by mixing EPP foamed polypropylene and polyurethane.

As a further preferred aspect of the present invention, the thickness of the first co-extrusion insulation layer, the second co-extrusion insulation layer and the third co-extrusion insulation layer is 0.2-0.3 mm.

After the structure is adopted, the utility model has the advantages of as follows:

1. the utility model adopts the three-layer co-extrusion insulating layer as the insulating structure, the preparation process is simple, the insulating effect is good, and the effect of reducing the cost can be achieved;

2. the utility model discloses a copper conductor is wrapped up in to the insulating cover of resistance to compression, has not only further improved fire-resistant effect, has better pressure-bearing effect moreover.

Drawings

Fig. 1 is a structural sectional view of the present invention;

wherein, 1, copper conductor; 2. a first co-extruded insulating layer; 3. a compression-resistant insulating sleeve; 4. a mica tape layer; 5. a second co-extruded insulation layer; 6. a copper tape layer; 7. a third co-extruded insulation layer; 8. and (5) an outer cladding.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

3. Referring to fig. 1, a co-extrusion insulation irradiation cross-linking halogen-free low-smoke flame-retardant fire-resistant wire comprises four copper conductors 1, wherein a first co-extrusion insulation layer 2 is wrapped outside each copper conductor 1; meanwhile, a compression-resistant insulating sleeve 3 is wrapped outside the first co-extrusion insulating layer 2; the utility model discloses a copper conductor 1 is wrapped up in resistance to compression insulating cover 3, has not only further improved fire-resistant effect, has better pressure-bearing effect moreover.

Be equipped with mica tape layer 4 in the 3 overcoat of resistance to compression insulating cover, be equipped with the second at mica tape layer 4 overcoat and crowd insulating layer 5 altogether, crowd insulating layer 5 overcoat altogether at the second and be equipped with copper tape layer 6, be equipped with third and crowd insulating layer 7 altogether at copper strips layer 6 overcoat, have surrounding layer 8 in the outer parcel of third crowded insulating layer 7 altogether.

The utility model discloses in, preferred first crowded insulating layer 2 altogether, second crowded insulating layer 5 altogether and third crowded insulating layer 7 is formed by the once crowded shaping altogether of irradiation crosslinked polyethylene and the low cigarette crosslinked polyolefin of nothing halogen. The three-layer co-extrusion insulating layer is adopted as an insulating structure, the preparation process is simple, the insulating effect is good, and the effect of reducing the cost can be achieved. And simultaneously, in the utility model discloses in, the thickness of first crowded insulating layer 2 altogether, second crowded insulating layer 5 altogether and third crowded insulating layer 7 altogether is 0.2-0.3 millimeter.

In the utility model, the preferred compression-resistant insulating sleeve 3 is formed by mixing EPP foamed polypropylene and polyurethane. EPP is short for foamed polypropylene as a novel foamed plastic. EPP is a polypropylene plastic foaming material, is a high-crystallization polymer/gas composite material with excellent performance, and becomes the environment-friendly novel compression-resistant buffering heat-insulating material which is the fastest to grow at present due to unique and superior performance. EPP is also an environment-friendly material, can be recycled and can be naturally degraded without causing white pollution. The polyurethane has the characteristics of light weight, sound insulation, excellent heat insulation performance, chemical resistance, good electrical property, easy processing and low water absorption rate.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A co-extrusion insulation irradiation cross-linking halogen-free low-smoke flame-retardant fire-resistant wire comprises four copper conductors and is characterized in that a first co-extrusion insulation layer is wrapped outside each copper conductor; simultaneously, all the first co-extruded insulating layers are wrapped with a compression-resistant insulating sleeve; resistance to compression insulating cover overcoat is equipped with the mica tape layer, the mica tape overcoat is equipped with the crowded insulating layer altogether of second, the crowded insulating layer overcoat is altogether to the second is equipped with the copper tape layer, the copper tape overcoat is equipped with the crowded insulating layer altogether of third, the outer parcel of the crowded insulating layer altogether of third has the surrounding layer.

2. The co-extruded insulation irradiation crosslinking halogen-free low-smoke flame-retardant fire-resistant electric wire of claim 1, wherein the first co-extruded insulation layer, the second co-extruded insulation layer and the third co-extruded insulation layer are formed by one-time co-extrusion of irradiation crosslinking polyethylene and halogen-free low-smoke crosslinking polyolefin.

3. The co-extruded insulation irradiation crosslinking halogen-free low-smoke flame-retardant fire-resistant electric wire as claimed in claim 1, wherein the thicknesses of the first co-extruded insulation layer, the second co-extruded insulation layer and the third co-extruded insulation layer are all 0.2-0.3 mm.