CN202332362U

CN202332362U - Halogen-free low-smoke flame-retardant polyolefin environmental-protection cable

Info

Publication number: CN202332362U
Application number: CN2011204928139U
Authority: CN
Inventors: 章国榜
Original assignee: WUHAN HONGLIAN WIRE & CABLE Co Ltd
Current assignee: WUHAN HONGLIAN WIRE & CABLE Co Ltd
Priority date: 2011-12-02
Filing date: 2011-12-02
Publication date: 2012-07-11
Anticipated expiration: 2021-12-02

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant polyolefin environmental-protection cable which comprises a conductive core and an insulating layer, wherein the insulating layer is coated on the other wall of the conductive core; the insulating layer is in a two-layer structure, and is sequentially composed of an insulating inner layer and an insulating outer layer from inside to outside; the outer wall of the insulating outer layer is sequentially coated with a shielding layer, an armor layer and a protective casing from inside to outside; and the insulating layer, the shielding layer, the armor layer and the protective casing are bonded through an adhesive. The utility model has the advantages of small size and small bending radius, and is convenient for cable laying and mounting; and the utility model has the characteristics of fire resistance, no halogen, low smoke, flame retardancy and the like, and has favorable properties, such as shielding, mechanical protection and the like. The burning cable does not release halogen gas or generate toxic, harmful or corrosive gas; the burning cable generates a small amount of smoke, and is beneficial to safe evacuation of personnel in the fire scene; and the cable is free of lead and other heavy metals, and thus, does not pollute the soil.

Description

The halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable

Technical field

The utility model relates to a kind of cable, relates in particular to a kind of halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable.

Background technology

The toxic and harmful that is produced because of the electric wire burning in the fire is one of key factor that causes personnel's death by suffocation; So to specializing in the electric wire that electric energy transmitting and communication signal use; Not only require to have and when cable and surrounding environment are caught fire, have fire resistances such as to stop propagation of flame; And can keep cable and continue electric energy transmitting and communication signal, and when burning, also should have low-smoke, it is low to produce gas attack property; Be beneficial to the on-the-spot performance of staff's safe escape, promptly should make cable have Halogen, low cigarette, performance such as fire-retardant.

Cable adopts the material that contains halogen element to carry out fire-retardant mostly at present; Its defective is that electric wire discharges a large amount of pernicious gases when burning; Thereby the death by suffocation that causes the scene of fire personnel; In this simultaneously, it also pollutes soil after discarded, and needing to have alternative technical scheme to solve the key subjects in this cables manufacturing field.

Summary of the invention

To the problem that above-mentioned prior art exists, the utility model provides a kind of halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable.

To achieve these goals; The technical scheme that the utility model adopts is: a kind of halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable, comprise conductor wire core and insulating barrier, and insulating barrier is coated on the outer wall of conductor wire core; Insulating barrier is a double-layer structure; Be followed successively by inner insulating layer and insulating outer layer from inside to outside, the outer wall of insulating outer layer is coated with screen, armour and protection tube from inside to outside successively, and is bonding through viscose glue between said insulating barrier, screen, armour and the protection tube.

As preferably, inner insulating layer is the LSOH anti-flaming layer.

As preferably, insulating outer layer is a polyolefin insulation layer.

Compared with prior art, the advantage of the utility model is: volume is less, and bending radius is little, is beneficial to the laying installation of cable; Have characteristics such as fire-resistant, Halogen, low-smoke and flame retardant; Performances such as good shielding, mechanical protection are arranged.Do not discharge halogen gas during cable fire, do not produce the poisonous and harmful etchant gas; The amount of being fuming is little during burning, helps scene of a fire personnel's safe escape; Do not contain heavy metals such as lead, not contaminated soil.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among the figure: 1, conductor wire core; 2, inner insulating layer; 3, insulating outer layer; 4, screen; 5, armour; 6, protection tube.

Embodiment

To combine accompanying drawing that the utility model is described further below.

A kind of execution mode as the utility model; Consult Fig. 1, the utility model comprises conductor wire core 1 and insulating barrier, and insulating barrier is coated on the outer wall of conductor wire core 1; Insulating barrier is a double-layer structure; Be followed successively by inner insulating layer 2 and insulating outer layer 3 from inside to outside, the outer wall of insulating outer layer 3 is coated with screen 4, armour 5 and protection tube 6 from inside to outside successively, and is bonding through viscose glue between said insulating barrier, screen 4, armour 5 and the protection tube 6.Inner insulating layer 2 is the LSOH anti-flaming layer.Insulating outer layer 3 is a polyolefin insulation layer.

Volume is less, and bending radius is little, is beneficial to the laying installation of cable; Have characteristics such as fire-resistant, Halogen, low-smoke and flame retardant; Performances such as good shielding, mechanical protection are arranged.Do not discharge halogen gas during cable fire, do not produce the poisonous and harmful etchant gas; The amount of being fuming is little during burning, helps scene of a fire personnel's safe escape; Do not contain heavy metals such as lead, not contaminated soil.

Although having combined current taking as is that a most practical and preferred embodiment has been described the utility model; But be to be understood that; The utility model is not limited to the disclosed embodiments, and is intended to contain spirit and interior multiple modification and the equivalent arrangements of scope that is included in accompanying claims on the contrary.

Claims

1. halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable; Comprise conductor wire core and insulating barrier; Said insulating barrier is coated on the outer wall of conductor wire core, it is characterized in that: said insulating barrier is a double-layer structure, is followed successively by inner insulating layer and insulating outer layer from inside to outside; The outer wall of said insulating outer layer is coated with screen, armour and protection tube from inside to outside successively, and is bonding through viscose glue between said insulating barrier, screen, armour and the protection tube.

2. halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable according to claim 1 is characterized in that: said inner insulating layer is the LSOH anti-flaming layer.

3. halogen-free and low-smoke flame-retardant polyolefin environment-friendly cable according to claim 1 is characterized in that: said insulating outer layer is a polyolefin insulation layer.