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A kind of overhead power cable insulating material and production method thereof

A technology of insulating materials and power cables, which is applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., and can solve problems such as general insulation performance, low process controllability, and complex composition of cable insulation materials

Active Publication Date: 2021-10-15
国网河南省电力公司西峡县供电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition of the cable insulation material is complex, and the process controllability is low. As an insulation material, the insulation performance is average, and the improvement of mechanical properties is limited.

Method used

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  • A kind of overhead power cable insulating material and production method thereof
  • A kind of overhead power cable insulating material and production method thereof
  • A kind of overhead power cable insulating material and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An insulating material for overhead power cables, made of the following raw materials in parts by weight: 100 parts of polyethylene, 10 parts of polypropylene, 3 parts of ethylene-vinyl alcohol copolymer, 0.2 part of benzil, 0.05 part of p-aminoazobenzene, 1 part of inorganic nanoparticles, 0.1 part of additives.

[0031] Polyethylene is composed of low-density polyethylene and high-density polyethylene with a mass ratio of 10:1. The inorganic nanoparticles are nano magnesium oxide. The average particle size of the inorganic nanoparticles is 10 nm. The additive is carbon black.

[0032] A production method for overhead power cable insulating material, comprising the following steps:

[0033] S1. Add polyethylene, polypropylene and ethylene-vinyl alcohol copolymer to the internal mixer, knead for 15 minutes, then add benzil and p-aminoazobenzene in sequence, continue kneading for 8 minutes, and then add inorganic nanoparticles Mixing with additives for 5 minutes to o...

Embodiment 2

[0037] An insulating material for overhead power cables, made of the following raw materials in parts by weight: 100 parts of polyethylene, 11 parts of polypropylene, 4 parts of ethylene-vinyl alcohol copolymer, 0.3 parts of benzil, 0.06 parts of p-aminoazobenzene, 2 parts of inorganic nanoparticles, 0.3 parts of additives.

[0038] Polyethylene is composed of low-density polyethylene and high-density polyethylene with a mass ratio of 12:1. The inorganic nanoparticles are nano zinc oxide. The average particle size of the inorganic nanoparticles is 12 nm. The additive is modified montmorillonite.

[0039] A production method for overhead power cable insulating material, comprising the following steps:

[0040] S1. Add polyethylene, polypropylene and ethylene-vinyl alcohol copolymer to the internal mixer, knead for 18 minutes, then add benzil and p-aminoazobenzene in sequence, continue kneading for 9 minutes, and then add inorganic nanoparticles Mixing with additives for 6 min...

Embodiment 3

[0044] An insulating material for overhead power cables, made of the following raw materials in parts by weight: 100 parts of polyethylene, 12 parts of polypropylene, 5 parts of ethylene-vinyl alcohol copolymer, 0.4 part of benzil, 0.07 part of p-aminoazobenzene, 3 parts of inorganic nanoparticles, 0.5 parts of additives.

[0045] Polyethylene is composed of low-density polyethylene and high-density polyethylene with a mass ratio of 15:1. The inorganic nanoparticles are nano-silica. The average particle size of the inorganic nanoparticles is 15 nm. The additive is UV absorber UV-531.

[0046] A production method for overhead power cable insulating material, comprising the following steps:

[0047] S1. Add polyethylene, polypropylene and ethylene-vinyl alcohol copolymer to the internal mixer, knead for 20 minutes, then add benzil and p-aminoazobenzene in sequence, continue kneading for 10 minutes, and then add inorganic nanoparticles Mixing with additives for 8 minutes to o...

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Abstract

The invention provides an insulating material for overhead power cables and a production method thereof, belonging to the technical field of insulating materials. An insulating material for overhead power cables, made of the following raw materials in parts by weight: 100 parts of polyethylene, 10-15 parts of polypropylene, 3-8 parts of ethylene-vinyl alcohol copolymer, 0.2-0.7 parts of benzil, p-amino 0.05-0.13 parts of azobenzene, 1-5 parts of inorganic nanoparticles, and 0.1-2 parts of additives. The invention is an insulating material for overhead power cables, which uses polyethylene as a base material, and uses polypropylene and ethylene-vinyl alcohol copolymer for blending, and at the same time adds a certain amount of benzil, p-aminoazobenzene, and inorganic nanoparticles and additives to improve the electrical properties of polyethylene insulation.

Description

technical field [0001] The invention belongs to the technical field of insulating materials, and in particular relates to an insulating material for overhead power cables and a production method thereof. Background technique [0002] As important power equipment, power cables are an important part of power transmission and distribution systems. With the acceleration of urbanization and the development of renewable resources, the demand for power cables will continue to increase. [0003] Insulating material refers to the material used to isolate conductive parts of different potentials. When a voltage is applied to the insulating material, the insulating material only generates a weak current. Solid insulating materials are more common, mainly including insulating paper, rubber, plastic, glass, ceramics, etc. According to their components, they are mainly divided into three categories: inorganic, organic and composite insulating materials. Composite materials are mainly tw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/08C08K13/06C08K13/02C08K9/06C08K3/34C08K3/22C08K3/36C08K5/23C08K3/04C08K5/07H01B3/44
CPCC08K2003/222C08K2003/2296C08K2201/011C08L23/06C08L2201/08C08L2203/202C08L2205/025C08L2205/035C08L2207/062C08L2207/066H01B3/441C08L23/12C08L23/0861C08K13/06C08K9/06C08K3/346C08K3/22C08K3/36C08K5/23C08K5/07C08K13/02C08K3/04
Inventor 吴少昱汪夏赵晨李尧薄楠杜永玺
Owner 国网河南省电力公司西峡县供电公司
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