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

A fire-resistant cable, green and environmentally friendly technology, applied in the direction of cable/conductor manufacturing, conductor/cable insulation, circuits, etc., can solve the problems of flame-retardant wires and cables, high smoke generation, high toxicity, etc., to achieve convenient evacuation and first aid, The effect of blocking the transmission of oxygen and strong fire resistance

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] Aiming at the deficiencies of the prior art, the purpose of the present invention is to propose a method for manufacturing a high-flame-retardance, low-emission green, environmentally friendly fire-resistant 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", which can make the cables have better fire resistance, and its flame retardancy reaches Class A, and its combustion performance reaches Class B1. gas toxicity up to t 0 level, the level of burning droplets / particles 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 fire-resistant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for manufacturing a high-flame-resistance and low-emission green and environment-friendly fire-resistant cable, the method has the following steps: (1) material selection; (2) wire drawing; (3) conductor twisting; (4) wrapping fire-resistant insulation layer; (5) extrusion (6) Irradiation cross-linking; (7) Cabling; (8) Extruded oxygen barrier layer; (9) Wrapped flame retardant and refractory layer; (10) Extruded outer sheath; (11) Product performance Testing; (12) Finished product packaging and storage.

[0039] 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.

[0040] The conductor stranding refers to twisting a plurality of round copper monofilaments on the conductor stranding equipment according to the predetermined number, rule, twisting direction and pitch to form a tightly compressed circular or non-comp...

Embodiment 2

[0056] 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 (7) Cabling; (8) Extruded oxygen barrier layer; (9) Wrapped flame retardant and refractory layer; (10) Extruded outer sheath; (11) Product performance testing; (12) Finished product packaging into library, change the conductor stranding step in embodiment 1 into the conductor step, the conductor step refers to the circular copper monofilament formed by the wire drawing step directly as the conductor of the product, and the total thickness of the extruded insulating layer is changed 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 diameter of the flame-retardant high-temperature fil...

Embodiment 3

[0065] In embodiment 3, the steps of manufacturing the cable are consistent with embodiment 1, the total thickness of the extruded insulation layer in embodiment 1 is changed to 2.8mm, the thickness of the inner layer insulation is changed to 0.8mm, and the thickness of the outer layer insulation is changed to Change it to 2.0mm, change the extrusion line speed of the insulating 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 to 50-55 times .

[0066] 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 B1 level and above, and smoke toxicity is t 0 Level, burning droplets / particles level is d 0 Grade wires and cables; a class of high-rise buildings and crowded public places should choose combustion performance B1 grade, smoke toxicity is t 1 Lev...

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Abstract

The invention discloses a manufacturing method of a high-flame-resistant, low-emission, green and environmentally-friendly fire-resistant cable. The method comprises the following steps: (1) materialselection; (2) wire drawing; (3) conductor or conductor twisting; (4) fire-resistant insulating layer wrapping; (5) extruded insulation; (6) irradiation crosslinking; (7) cabling; (8) oxygen barrier extrusion; (9) flame-resistant layer wrapping; (10) outer sheath extrusion; (11) product performance detection; and (12) finished product packaging and storage. The cable manufactured by the inventionovercomes 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 cable can be of relatively high fire resistance, the flame resistant level reaches level A, the combustion performance reaches level B1, the smoke toxicity reaches level t0, the combustion dripping / particle level reaches level d0, the corrosionperformance 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-retardance and low-emission green and environment-friendly fire-resistant 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, instrumentatio...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B13/08H01B13/14H01B13/02H01B13/22H01B13/26H01B13/24
CPCH01B13/00H01B13/02H01B13/08H01B13/141H01B13/143H01B13/145H01B13/148H01B13/221H01B13/24H01B13/26
Inventor 黄静盛业武陈光高沈智飞刘小兵
Owner SICHUAN MINGXING CABLE
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