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Cable semi-conductive shielding material

A shielding material, semi-conducting technology, applied to conductive materials dispersed in non-conductive inorganic materials, etc., can solve problems such as the transfer of space charges to insulators that cannot be solved

Inactive Publication Date: 2012-06-13
WUXI JIANGNAN CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition of this patented material is the same as that of the semi-conductive shielding material of the existing AC cable (such as Chinese patent CN 10262879C), and its main function is basically the same as that of the semi-conductive shielding material of the AC cable. Conductivity, after applying a voltage, a current is formed and exported, but this material cannot solve the above-mentioned problem of space charge transfer to the insulator, how to manufacture a material with excellent conductivity, and at the same time neutralize the space charge and prevent the space charge from flowing to the insulator The shifted cable semi-conductive shielding material is one of the problems that the wire and cable industry needs to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A cable semi-conductive shielding material, which includes the following components and parts by mass:

[0031] LDPE 100 parts;

[0032] Acetylene carbon black 50 parts

[0033] 1 part of zeolite;

[0034] 1.5 parts of dicumyl peroxide;

[0035] Antioxidant 300 0.3 parts.

Embodiment 2

[0037] A cable semi-conductive shielding material, which includes the following components and parts by mass:

[0038] EVA 85 parts

[0039] 15 parts of nitrile rubber

[0040] 15 parts of superconducting carbon black;

[0041] 1 part of zeolite;

[0042] 2 parts of diformyl peroxide;

[0043] Antioxidant BBM 0.3 parts.

Embodiment 3

[0045] A cable semi-conductive shielding material, which includes the following components and parts by mass:

[0046] LDPE 15 parts;

[0047] EVA 55 parts

[0048] 30 parts of nitrile rubber

[0049] 10 parts of superconducting carbon black;

[0050] 5 parts of zeolite;

[0051] 5 parts of di-tert-butyl peroxide;

[0052] Antioxidant 1076 1 part.

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PUM

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Abstract

The invention discloses a cable semi-conductive shielding material, comprising 100 weight portions of polyethylene and / or ethylene-vinyl acetate copolymer and / or modified rubber, 10-50 weight portions of conductive carbon black, 1-5 weight portions of zeolite, 1.5-5 weight portions of cross-linking agent, and 0.1-1 weight portions of anti-oxidant. The cable semi-conductive shielding material can effectively export a current, and simultaneously effectively neutralize space charge, prevent the space charge from transferring to an insulator, so as to achieve the purpose of effectively eliminate the space charge. In addition, the material has proper adhesion with an insulating layer and simultaneously has good peelable, and the performance of a final product is increased.

Description

[0001] technical field [0002] The invention relates to the field of materials used in the manufacture of wires and cables, in particular to a cable semi-conductive shielding material. Background technique [0003] With the continuous expansion of the power system, the continuous increase of transmission power, and the gradual increase of transmission distance, AC transmission has gradually encountered some technical bottlenecks. Adopting DC transmission is one of the directions to solve technical difficulties in power transmission. Compared with AC transmission, DC transmission has the advantages of high transmission efficiency, small line loss, convenient adjustment of current and change of power transmission direction, low investment cost, and the length is not limited by capacitive current. The advantages of short-circuit current between the power grid and corona radio interference are small. A number of studies have confirmed that the space charge in XLPE is the main ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L9/02H01B1/24C08K13/04C08K7/26C08K3/04
Inventor 陈晓军夏亚芳徐曼钟力生韩俊杰
Owner WUXI JIANGNAN CABLE
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