Semiconductive shielding composite material, preparation method thereof and application thereof in power cables

A composite material and semi-conductive technology, which is applied in the field of semi-conductive shielding composite material preparation for power cables, can solve the problems of large amount of carbon black filling, unsatisfactory performance and easy agglomeration of semi-conductive shielding materials, so as to improve the electrical conductivity and mechanical properties. The effect of excellent performance, mechanical properties and good compatibility
CN111440378AActive Publication Date: 2020-07-24STATE GRID HUNAN ELECTRIC POWER +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID HUNAN ELECTRIC POWER
Publication Date
2020-07-24

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Abstract

The invention relates to the technical field of semiconductive shielding composite materials, in particular to a semiconductive shielding composite material for a power cable, and the method comprisesthe following components in parts by weight: 94-98% of ethylene-vinyl acetate copolymer (EVA), 1-3% of carbon nanotube (CNT) and 1-3% of graphene oxide (GO). The preparation process comprises the following steps: (1) preparing a GO-CNT / EVA mixture; and (2) performing compression molding. According to the invention, the high-conductivity CNT is used as a conductive filler, the EVA is used as a matrix material, and the GO is used as a CNT and EVA matrix interface improver, so that an efficient conductive network is constructed under the condition of low CNT content, and the semiconductive shielding composite material with good conductivity and mechanical properties is obtained. The semiconductive shielding composite material for the power cable is simple to prepare, low in production cost and easy to realize mass production in industry.
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Description

technical field

[0001] The invention relates to the field of preparation of a semi-conductive shielding composite material for power cables, in particular to graphene oxide (hereinafter referred to as GO)-carbon nanotube (hereinafter referred to as CNT) / ethylene-vinyl acetate copolymer (hereinafter referred to as EVA) power cables Use semi-conductive shielding compound. Background technique

[0002] With the rapid growth of my country's economy and the advancement of power technology, high-voltage and ultra-high voltage transmission technology has attracted more and more attention because of its advantages such as long transmission distance, large transmission capacity and low loss. However, under high voltage, the cable insulation is prone to generate space charges, resulting in distortion of the electric field, and even breakdown of the insulation and damage to the cable. The semi-conductive shielding layer can make the electric field distribution more uniform to prevent ...

Claims

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