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Manufacturing method of high-flame-retardance low-release environment-friendly shield cable

A shielded cable, green and environmental protection technology, used in cable/conductor manufacturing, conductor/cable insulation, circuits, etc., can solve the problems of high toxicity, high smoke, and flame retardant wires and cables cannot be achieved, and achieve strong flame retardant performance, The effect of blocking the transmission of oxygen and good metal shielding performance

Inactive Publication Date: 2018-05-04
SICHUAN MINGXING CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to propose a manufacturing method of a high-flame-retardance, low-emission green, environmentally friendly shielded 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 the "Code for Electrical Design of Civil Buildings". It has the ability to resist external electromagnetic interference and the ability of the system itself to radiate electromagnetic interference, which can make the flame retardancy of the cable reach Class A, combustion performance reaches 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-retardance low-release environment-friendly shield cable
  • Manufacturing method of high-flame-retardance low-release environment-friendly shield cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for manufacturing a high flame-retardant and low-emission green and environment-friendly shielded cable, the method has the following steps: (1) material selection; (2) wire drawing; (3) conductor twisting; (4) wrapping a fire-resistant insulating layer; (5) extruding (6) radiation cross-linking; (7) cabling; (8) metal shielding; (9) extruded oxygen barrier layer; (10) armoring; (11) wrapped; (12) extruded Sheath; (13) Product performance testing; (14) Finished product packaging and storage.

[0041] The wire drawing is made of circular copper monofilaments of various specifications by using electric round copper rods through a plurality of wire drawing dies of special wire drawing equipment, and the wire drawing dies can be selected according to the specifications of the wire cores.

[0042] The conductor stranding refers to twisting a plurality of round copper monofilaments on the conductor stranding equipment according to the predetermined number, rule, twis...

Embodiment 2

[0062] In Embodiment 2, the steps of the method for manufacturing the cable are as follows: (1) material selection; (2) wire drawing; (3) conductor; (4) wrapping refractory insulating layer; (5) extrusion insulation; (6) irradiation Cross-linking; (7) cabling; (8) metal shielding; (9) extruded oxygen barrier layer; (10) armoring; (11) wrapping; (12) extruded outer sheath; (13) product performance Detection; (14) the finished product is packaged into the warehouse, and the conductor stranding step in embodiment 1 is changed into the conductor step, and the conductor step refers to the circular copper monofilament formed by the wire drawing step directly as the conductor of the product, and the extruded Change the total thickness of the insulation layer to 0.7mm, 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 flame retar...

Embodiment 3

[0072] In embodiment 3, the method for manufacturing the cable is consistent with the method for manufacturing the cable in embodiment 1, the total thickness of the extruded insulation layer in embodiment 1 is changed to 1.0mm, and the thickness of the inner layer insulation is changed to 0.3mm, Change the thickness of the outer layer insulation to 0.7mm, change the extrusion line speed of the insulation layer to 5-7m / min, change the thickness of the flame-retardant glass fiber wrapping tape to 60-80mm, and change the stranding pitch of the cabling step Change to 20 times, the thickness of the metal strip in the armoring process is changed to 0.2mm or the diameter of the metal strip is changed to 1.25mm.

[0073] 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 i...

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Abstract

The invention discloses a manufacturing method of a high-flame-retardance low-release environment-friendly shield cable. The method comprises the following steps of material selection, wire drawing, intertwist of conductors or conductors, lapping of a fire-resistant insulation layer, extruded insulation, radiation crosslinking, cabling, metallic shielding, extrusion of an oxygen insulation layer,armouring, lapping, extrusion of an outer sheath, detection of product performance and packaging and warehousing of finished products. The manufactured cable overcomes the defects of high smoke formation and high toxicity of a flame-retardance wire cable of the halogen-containing series, also solves the problem that the flame-retardance wire cable of the halogen-containing series cannot reach therule of the new version of the civil building electrical design specification, and has the capacity of resisting external electromagnetic interference and the capacity of outward radiating electromagnetic interference of a system; the flame retardance of the cable can reach the grade A, the combustion performance of the cable can reach the grade B1, the smoke toxicity of the cable can reach the grade t0, the combustion dripping / particle grade of the cable can reach the grade d0, the corrosion resistance of the cable can also reach the grade a1, and the cable can be widely applied to civil buildings.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a method for manufacturing a high-flame-retardance and low-emission green and environment-friendly shielded 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 cabl...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B13/02H01B13/10H01B13/14H01B13/22H01B13/24H01B13/26
CPCH01B13/02H01B13/003H01B13/10H01B13/14H01B13/22H01B13/24H01B13/2613
Inventor 黄静盛业武陈光高沈智飞刘小兵毛开裕靳荐宇
Owner SICHUAN MINGXING CABLE
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