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Manufacturing method of high-flame-resistant, low-emission, green and environmentally-friendly cable

A kind of green environmental protection, manufacturing method technology, applied in cable/conductor manufacturing, insulated cable, conductor/cable insulation and other directions, can solve the problems of high toxicity, halogen-free series flame retardant wire and cable can not be achieved, high smoke and other problems, achieve strong Flame retardant performance, safe and efficient extrusion process, and the effect of blocking the spread of oxygen

Inactive Publication Date: 2018-05-08
SICHUAN MINGXING CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies of the prior art, the purpose of the present invention is to propose a method for manufacturing a high flame-retardant low-emission green cable, so that the manufactured cable overcomes the disadvantages of high smoke and high toxicity of halogen-containing series flame-retardant wires and cables, It also solves the problem that the halogen-free series of flame-retardant wires and cables cannot meet the requirements of the new version of "Code for Electrical Design of Civil Buildings", which can make the flame retardancy of the cable reach Class A and the combustion performance reach Class B. 1 level, smoke toxicity reaches t 0 level, the level of burning droplets / particulates reaches d 0 level, and the corrosion performance level can also reach a 1 class

Method used

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  • Manufacturing method of high-flame-resistant, low-emission, green and environmentally-friendly cable
  • Manufacturing method of high-flame-resistant, low-emission, green and environmentally-friendly cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In Example 1, a method for manufacturing a high flame-retardant low-emission green cable, the method includes the following steps: (1), material selection; (2), wire drawing; (3), conductor stranding; (4) , extruded insulation; (5), radiation crosslinking; (6), cabled; (7), extruded oxygen barrier layer; (8), armored; (9), wrapping; (10), extruded Outer sheath; (11), product performance testing; (12), finished product packaging and storage.

[0036] The wire drawing is drawn into circular copper monofilaments of various specifications by using electrician round copper rods through a plurality of wire drawing dies of special wire drawing equipment.

[0037] The conductor stranding refers to twisting a plurality of round copper monofilaments on the conductor stranding equipment according to the predetermined number, specification, stranding direction and pitch to form a tightly compressed circular or non-compacted circular Or forming conductors, the stranding direction o...

Embodiment 2

[0052]In Example 2, the method steps for manufacturing the cable are as follows: (1), material selection; (2), wire drawing; (3), conductor; (4), extruded insulation; (5), irradiation crosslinking; ( 6), cabling; (7), extruded oxygen barrier layer; (8), armoring; (9), wrapping; (10), extruded outer sheath; (11) product performance testing; (12) The finished product is packaged in storage, and the conductor stranding step in embodiment 1 is changed into a conductor step. The conductor step refers to the circular copper monofilament formed in the wire drawing step directly as the conductor of the product, and the total thickness of the extruded insulation layer is changed to Change the thickness of the inner layer insulation to 0.2mm, change the thickness of the outer layer insulation to 0.5mm, change the extrusion line speed of the insulation layer to 80-100m / min, and change the diameter of the flame-retardant high-temperature filling rope to 0.7mm. Change it to φ2-4mm, change ...

Embodiment 3

[0060] In Example 3, the total thickness of the extruded insulating layer in Example 1 is changed to 2.8mm, the thickness of the inner layer insulation is changed to 0.8mm, the thickness of the outer layer insulation is changed to 2mm, and the extrusion of the insulating layer Change the line speed to 5-7m / min, change the thickness of the flame-retardant glass fiber wrapping tape to 60-80mm, change the stranding pitch in the cabling step to 50-55 times, and change the thickness of the metal strip in the armoring process to 0.8mm or the diameter of the metal strip is changed to 3.15mm.

[0061] The cables manufactured by Example 3 also meet the requirements in the "Code for Electrical Design of Civil Buildings": super high-rise buildings should choose combustion performance B 1 Grade and above, smoke toxicity is t 0 Level, burning droplets / particles level is d 0 Grade wires and cables; Class I high-rise buildings and crowded public places should choose combustion performance ...

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Abstract

The invention discloses a manufacturing method of a high-flame-resistant, low-emission, green and environmentally-friendly cable. The method comprises the following steps: (1) material selection; (2)wire drawing; (3) conductor or conductor twisting; (4) extruded insulation; (5) irradiation crosslinking; (6) cabling; (7) oxygen barrier extrusion; (8) armoring; (9) lapping; (10) outer sheath extrusion; (11) product performance detection; and (12) finished product packaging and storage. The cable manufactured by the invention overcomes the disadvantages that halogen-containing series flame-resistant electric wires and cables are high in smoke generation and high in toxicity, and also solves the problem that halogen-free series flame-resistant electric wires and cables cannot reach the specifications of new edition of 'civil architectural electrical design code', so that the flame resistant level of the cable can reach level A, the combustion performance reaches level B1, the smoke toxicity reaches level t0, the combustion dripping / particle level reaches level d0, the corrosion performance level also can reach level a1, and the cable can be widely used in civil architectures.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a method for manufacturing a high flame-retardant and low-emission green and environment-friendly cable. Background technique [0002] Wire and cable refers to materials used for power, electricity and related transmission purposes. Wire and cable are wire products used to transmit electric (magnetic) energy, information and realize electromagnetic energy conversion. As the main carrier of power transmission, wires and cables are widely used in electrical equipment, lighting lines, household appliances, etc., and their quality directly affects the quality of projects and the safety of consumers' lives and property, mainly including overhead bare wires used in power systems. Electric wires, power cables, etc., local telephone cables, TV cables, electronic cables, optical fiber cables, etc. for information transmission systems, as well as data cables, instrumentation cables, etc. f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/18H01B7/02H01B7/295H01B13/24H01B13/14H01B13/00
CPCH01B7/1875H01B7/0258H01B7/295H01B13/003H01B13/14H01B13/24
Inventor 黄静盛业武陈光高沈智飞刘小兵靳荐宇
Owner SICHUAN MINGXING CABLE
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