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A kind of multi-core flame-retardant cross-linked polyethylene cable material and preparation method thereof

A cross-linked polyethylene and cable technology, used in cable/conductor manufacturing, insulating cables, insulating conductors/cables, etc., can solve the problem of poor tensile performance of multi-core cables, easy exposure of the core to the air, and outer skin. Softening and shedding problems, to achieve the effect of improving comprehensive practicability and safety, improving thermal stability and good wear resistance

Active Publication Date: 2022-07-12
JING FENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the poor tensile performance and low fire resistance of the multi-core cable in the prior art, which leads to the failure of the cable itself to have good fire resistance when a fire occurs, and the long-term high temperature of the cable causes The softening and peeling of the outer cortex causes harm, and the cortex cracks after long-term use, which leads to the core body being easily exposed to the air and prone to safety problems such as electric leakage. A multi-core flame-retardant cross-linked polyethylene cable material and its preparation method are proposed.

Method used

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  • A kind of multi-core flame-retardant cross-linked polyethylene cable material and preparation method thereof
  • A kind of multi-core flame-retardant cross-linked polyethylene cable material and preparation method thereof

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Embodiment 1

[0027] The multi-core flame-retardant cross-linked polyethylene cable material proposed by the present invention sequentially includes a conductor, a wrapping tape, an inner insulating layer, a flame-retardant layer and a sheath layer from the inside to the outside.

[0028] The present invention also provides a method for preparing a multi-core flame-retardant cross-linked polyethylene cable material, comprising the following steps:

[0029] S1. Core preparation:

[0030] S11. After the aluminum alloy single wire with a diameter of 1.5mm and the soft copper double wire with a diameter of 0.75mm are twisted and compacted, the outer circumference is concentrically wrapped with a soft copper mesh woven from a soft copper wire with a diameter of 0.23mm to obtain a conductor; soft copper The mesh weaving density is 62%, and the coverage rate is 100%;

[0031] S12. Wrap the alkali-free and wax-free glass fiber cloth around the outer periphery of the conductor, and tightly combine ...

Embodiment 2

[0041] The multi-core flame-retardant cross-linked polyethylene cable material proposed by the present invention sequentially includes a conductor, a wrapping tape, an inner insulating layer, a flame-retardant layer and a sheath layer from the inside to the outside.

[0042] The present invention also provides a method for preparing a multi-core flame-retardant cross-linked polyethylene cable material, comprising the following steps:

[0043] S1. Core preparation:

[0044]S11. After the aluminum alloy single wire with a diameter of 1.5mm and the soft copper double wire with a diameter of 0.75mm are twisted and compacted, the outer circumference is concentrically wrapped with a soft copper mesh woven from a soft copper wire with a diameter of 0.23mm to obtain a conductor; soft copper The mesh weaving density is 62%, and the coverage rate is 100%;

[0045] S12. Wrap the alkali-free and wax-free glass fiber cloth around the outer periphery of the conductor, and tightly combine w...

Embodiment 3

[0055] The multi-core flame-retardant cross-linked polyethylene cable material proposed by the present invention sequentially includes a conductor, a wrapping tape, an inner insulating layer, a flame-retardant layer and a sheath layer from the inside to the outside.

[0056] The present invention also provides a method for preparing a multi-core flame-retardant cross-linked polyethylene cable material, comprising the following steps:

[0057] S1. Core preparation:

[0058] S11. After the aluminum alloy single wire with a diameter of 1.5mm and the soft copper double wire with a diameter of 0.75mm are twisted and compacted, the outer circumference is concentrically wrapped with a soft copper mesh woven from a soft copper wire with a diameter of 0.23mm to obtain a conductor; soft copper The mesh weaving density is 62%, and the coverage rate is 100%;

[0059] S12. Wrap the alkali-free and wax-free glass fiber cloth around the outer periphery of the conductor, and tightly combine ...

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Abstract

The invention belongs to the technical field of cable materials, in particular to a multi-core flame-retardant cross-linked polyethylene cable material and a preparation method thereof. When a fire occurs, it cannot have good fire resistance by itself, and the cable will soften and fall off the outer skin under long-term high temperature. The problem is that the multi-core flame retardant cross-linked polyethylene cable material, from the inside to the outside, sequentially includes a conductor, a wrapping tape, an inner insulating layer, a flame retardant layer, and a sheath layer; the wrapping tape is wrapped around the conductor. The outer periphery is tightly combined with the conductor to form a core body, and the core body has at least two. The cable material of the invention has good elasticity, good creep resistance and good tensile properties; it has good electrical insulation, thermal insulation, fire resistance, anti-aging and other properties, high strength, good wear resistance, and high safety in use .

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a multi-core flame-retardant cross-linked polyethylene cable material and a preparation method thereof. Background technique [0002] Wire and cable is an indispensable basic equipment for transmitting electric energy, transmitting information and manufacturing various motors, electrical appliances, instruments, automobiles, machine tools and other equipment, and is a necessary basic product in an electrified and information society. In 2012, my country surpassed the United States to become the world's largest wire and cable producer, and the industry output value is second only to the automotive industry in the electrical and electrical industry. As an important basic industry, the wire and cable industry is known as the "blood vessel" and "nerve" of the national economy. In the current market, whether it is a TV, a computer, or a place with electronic equipment such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/18H01B7/22H01B7/28H01B7/29H01B7/295H01B7/02H01B13/02H01B13/14H01B13/22H01B13/24H01B13/26H01B13/00
CPCH01B7/1875H01B7/187H01B7/0275H01B7/223H01B7/295H01B7/292H01B7/28H01B7/2806H01B13/02H01B13/2606H01B13/22H01B13/14H01B13/24H01B13/003Y02A30/14
Inventor 许德俊许德晨
Owner JING FENG GRP