High-temperature-resistant and high-pressure-resistant thin-wall insulated wire cable for railway passenger car

A thin-wall insulation, wire and cable technology, used in insulated cables, insulated conductors, cable/conductor manufacturing, etc., can solve the problems of poor electrical and physical and mechanical properties, low tensile strength, and heavy overall weight.

Inactive Publication Date: 2021-05-18
河北亿正线缆有限公司
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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 problems of heavy overall weight, large size, low tensile strength, poor electrical and physical and mechanical properties, and poor cable safety performance in the existing technology of electric wires and cables for railway passenger cars. Wire and cable for high temperature and high pressure thin-wall insulation railway passenger cars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention proposes a wire and cable for high temperature and high pressure thin-wall insulated railway passenger cars. The braid over the cladding and the outer sheath wrapped around the braid;

[0025] The conductors are 2 groups of galvanized copper wires or silver-plated copper wires, and the cross-sectional area of ​​the conductors is 0.28mm 2 ;

[0026] The insulating layer is made of polyethylene plastic, fluoroplastic, glass fiber, tetramethyldiphenylethane and diallyl phthalate with a mass ratio of 25:4:12:1:1, and then extruded formed;

[0027] The wrapping layer is obtained by extrusion molding after mixing uniformly nitrile rubber, mica powder, methylethanolamine, stearic acid and flame retardant with a mass ratio of 30:15:2:3:1;

[0028] The braided layer is a copper wire braided layer or a steel wire braided layer;

[0029] The outer sheath includes the following raw materials in parts by weight: 30 parts of polyvinyl chloride, 20 parts of polyester...

Embodiment 2

[0037] The invention proposes a wire and cable for high temperature and high pressure thin-wall insulated railway passenger cars. The braid over the cladding and the outer sheath wrapped around the braid;

[0038] The conductors are 8 groups of galvanized copper wires or silver-plated copper wires, and the cross-sectional area of ​​the conductors is 0.8mm 2 ;

[0039] The insulating layer is made of polyethylene plastic, fluoroplastic, glass fiber, tetramethyldiphenylethane and diallyl phthalate with a mass ratio of 30:5:13:1:1.1, and then extruded formed;

[0040] The wrapping layer is obtained by extrusion molding after mixing uniformly nitrile rubber, mica powder, methylethanolamine, stearic acid and flame retardant with a mass ratio of 35:18:2.5:3.5:1.2;

[0041] The braided layer is a copper wire braided layer or a steel wire braided layer;

[0042] The outer sheath includes the following raw materials in parts by weight: 35 parts of polyvinyl chloride, 22 parts of po...

Embodiment 3

[0050] The invention proposes a wire and cable for high temperature and high pressure thin-wall insulated railway passenger cars. The braid over the cladding and the outer sheath wrapped around the braid;

[0051] The conductors are 14 groups of galvanized copper wires or silver-plated copper wires, and the cross-sectional area of ​​the conductors is 1.2mm 2 ;

[0052] The insulating layer is made of polyethylene plastic, fluoroplastic, glass fiber, tetramethyldiphenylethane and diallyl phthalate with a mass ratio of 35:6:14:1:1.3, and then extruded formed;

[0053] The wrapping layer is obtained by extrusion molding after mixing uniformly nitrile rubber, mica powder, methylethanolamine, stearic acid and flame retardant with a mass ratio of 40:20:2.5:4:1.5;

[0054] The braided layer is a copper wire braided layer or a steel wire braided layer;

[0055] The outer sheath includes the following raw materials in parts by weight: 40 parts of polyvinyl chloride, 25 parts of pol...

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Abstract

The invention belongs to the technical field of wire and cable materials, particularly relates to a high-temperature-resistant and high-pressure-resistant thin-wall insulated wire and cable for a railway passenger car, and solves the problems of heavy overall weight, large size, low tensile strength, poor electrical property, poor physical and mechanical properties, poor cable safety performance and the like of the wire and cable for the railway passenger car in the prior art. The high-temperature-resistant and high-pressure-resistant thin-wall insulated wire cable for the railway passenger car comprises a conductor, an insulating layer wrapped outside the conductor, a wrapping layer wrapped outside the insulating layer, a braid layer wrapped outside the wrapping layer and an outer sheath wrapped outside the braid layer, and the outer sheath comprises the following raw materials: polyvinyl chloride, polyester resin, sodium metaphosphate, phthalate, butylated hydroxytoluene and a flame retardant. The outer sheath material for the electric wire and cable of the railway passenger car has the advantages of simple and easily available raw materials, simple preparation, excellent high-temperature and high-pressure resistance, flame retardance, tensile strength and elongation at break.

Description

technical field [0001] The invention relates to the technical field of wire and cable materials, in particular to a wire and cable for high-temperature and high-pressure-resistant thin-wall insulation railway passenger cars. Background technique [0002] Wire and cable refers to materials used for power, communication and related transmission purposes. With the large-scale construction of passenger dedicated lines and high-speed railways in my country, the demand for wires and cables for railway passenger cars continues to expand, especially for wires and cables for thin-walled insulated railway passenger cars. Such wires and cables must have high reliability requirements. Wires and cables for railway passenger cars have high requirements on oil resistance, environmental resistance, electrical properties and mechanical properties. The wires and cables used for railway passenger cars have been operated under different environmental conditions for a long time, and the cables ...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/295H01B7/18H01B13/24
CPCH01B7/0275H01B7/295H01B7/18H01B13/24
Inventor 张涛
Owner 河北亿正线缆有限公司
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