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Crosslinkable polyethylene insulation material for high-voltage direct-current cable

A cross-linked polyethylene, high-voltage DC technology, used in insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of space charge accumulation and poor electrical conductivity, and achieve excellent electrical conductivity and suppress space charge. Effect

Inactive Publication Date: 2014-08-06
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of existing ordinary cross-linked polyethylene under the action of a DC electric field, which are prone to space charge accumulation and poor conductivity, thereby providing a cross-linkable polyethylene insulating material for high-voltage DC cables

Method used

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  • Crosslinkable polyethylene insulation material for high-voltage direct-current cable
  • Crosslinkable polyethylene insulation material for high-voltage direct-current cable
  • Crosslinkable polyethylene insulation material for high-voltage direct-current cable

Examples

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specific Embodiment approach 1

[0014] Specific embodiment 1: A kind of cross-linkable polyethylene insulating material for high-voltage DC cables in this embodiment consists of 100 parts by weight of low-density polyethylene, 1.5-2.2 parts of cross-linking agent, 0.2-0.5 parts of anti-corrosion It is made of oxygen agent and 0.5-1.2 parts of nano-carbon material.

[0015] This embodiment includes the following beneficial effects:

[0016] The electrical conductivity of XLPE filled with nano-carbon materials prepared by using the cross-linkable polyethylene insulating material of this embodiment does not change with the electric field intensity in an electric field below 20kV / mm, and changes by about 1 order of magnitude with temperature, and has excellent electrical conductivity; The cross-linked polyethylene produced by the cross-linkable polyethylene insulating material of the embodiment also has the ability to suppress space charges; the cross-linked polyethylene material prepared by using the cross-link...

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the cross-linkable polyethylene insulating material for high-voltage DC cables consists of 100 parts of low-density polyethylene and 1.5 parts of cross-linking agent in parts by weight. , 0.2 parts of antioxidant and 0.5 parts of nano-carbon materials. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Specific embodiment three: The difference between this embodiment and specific embodiment one or two is that the cross-linkable polyethylene insulating material for high-voltage DC cables consists of 100 parts by weight of low-density polyethylene and 1.8 parts of cross-linked polyethylene. Joint agent, 0.3 part of antioxidant and 0.6 part of nano-carbon material. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a crosslinkable polyethylene insulation material for a high-voltage direct-current cable, relating to a crosslinkable polyethylene insulation material. The crosslinkable polyethylene insulation material is used for solving the technical problems that existing common crosslinked polyethylene is easy to generate space charge accumulation and has poor electrical conductivity characteristics under the effect of a direct-current electric field. The crosslinkable polyethylene insulation material for the high-voltage direct-current cable is prepared from the following components in parts by weight: 100 parts of low-density polyethylene, 1.5-2.2 parts of crosslinking agent, 0.2-0.5 part of antioxidant and 0.5-1.2 parts of nano-carbon material. Crosslinked polyethylene prepared by using the crosslinkable polyethylene insulation material has excellent electrical conductivity characteristics and space charge inhibiting capacities, and can be used for manufacturing the high-voltage direct-current cable to replace imported products. The crosslinkable polyethylene insulation material for the high-voltage direct-current cable, disclosed by the invention, can be applied to the field of preparation of the crosslinkable polyethylene insulation material.

Description

technical field [0001] The invention relates to a cross-linkable polyethylene insulating material. Background technique [0002] High-voltage DC cable lines have the advantages of low loss, large transmission capacity, unlimited transmission distance, high operational stability, and can be connected to asynchronous power grids, etc., and their applications are increasingly valued. In some specific fields, such as long-distance cross-sea power transmission, high-voltage DC cable lines are almost the only choice. In the early 45 years of high-voltage DC cable application, impregnated paper insulated cables and oil-filled cables were mainly used. The disadvantages are complicated manufacturing process, high cost and difficult maintenance. In 1999, cross-linked polyethylene (XLPE) insulated high-voltage DC cables began to be used, and their advantages such as high working temperature, light weight, simple structure of cables and accessories, convenient installation and maintena...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K13/02C08K5/14C08K3/04H01B3/44
CPCC08K3/04C08K5/14C08K13/02C08K2201/001C08K2201/011C08L2203/202H01B3/441C08L23/06
Inventor 韩宝忠赵洪王暄李忠华
Owner HARBIN UNIV OF SCI & TECH
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