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Cable insulation material with self-repairing function

A cable insulation and self-repair technology, applied in the direction of organic insulators, insulators, plastic/resin/wax insulators, etc., can solve problems such as insulation performance decline, electrical tree branches, water branches, power failures, etc., and achieve good repair performance.

Inactive Publication Date: 2017-05-31
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] XLPE insulated cables are widely used in electric power, construction, industrial and mining, metallurgy, petroleum, chemical industry, transportation and other departments. They have completely replaced oil-impregnated paper insulated cables and partially replaced PVC insulated power cables. The cables have been in long-term operation on site. Under certain conditions, under the comprehensive action of multiple factors such as electricity, heat, machinery, and chemistry, defects such as electric branches and water branches will be generated, resulting in a decrease in insulation performance, and eventually the cable insulation will be broken down, causing serious power outages.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Self-healing cable insulation material, consisting of the following components in parts by weight: 100 parts of low-density polyethylene, 2.5 parts of vinyltrimethoxysilane, tert-butylperoxy-3,5,5-trimethylhexanoic acid 0.12 parts of ester, 1.2 parts of 1801 organic stearic acid, 2.6 parts of dibutyltin dilaurate (DBTDL), 3.3 parts of zinc oxide, 2.7 parts of 1010 antioxidant, microcapsules made of urea-formaldehyde resin coated dicyclopentadiene system 2 parts, Grubbs catalyst 0.02 parts.

[0027] The microcapsules made of urea-formaldehyde resin coated dicyclopentadiene system are prepared by the following method: first, 1 part by weight of urea and 2 parts of formaldehyde solution with 37% concentration are mixed and stirred mechanically, and the pH is adjusted with triethanolamine to 8 to 9, react at 65 to 75°C for 1 to 1.5 hours, add 7 to 8 parts of water to form solution A, and then mix 0.2 to 0.4 parts of emulsifier sodium dodecylbenzenesulfonate with 2 to 3 part...

Embodiment 2

[0030] Self-healing cable insulation material, composed of the following components in parts by weight: 100 parts of low-density polyethylene, 2 parts of vinyltrimethoxysilane, tert-butyl peroxide-3,5,5-trimethylhexanoic acid 0.1 part of ester, 1 part of 1801 organic stearic acid, 2.5 parts of dibutyltin dilaurate (DBTDL), 3 parts of zinc oxide, 2.5 parts of 1010 antioxidant, microcapsules made of urea-formaldehyde resin coated dicyclopentadiene system 3 parts, Grubbs catalyst 0.03 parts.

[0031] The microcapsules made of urea-formaldehyde resin coated dicyclopentadiene system are prepared by the following method: first, 1 part by weight of urea and 2 parts of formaldehyde solution with 37% concentration are mixed and stirred mechanically, and the pH is adjusted with triethanolamine to 8 to 9, react at 65 to 75°C for 1 to 1.5 hours, add 7 to 8 parts of water to form solution A, and then mix 0.2 to 0.4 parts of emulsifier sodium dodecylbenzenesulfonate with 2 to 3 parts of Mi...

Embodiment 3

[0034] Self-healing cable insulation material, composed of the following components in parts by weight: 100 parts of low-density polyethylene, 4 parts of vinyltrimethoxysilane, tert-butyl peroxide-3,5,5-trimethylhexanoic acid 0.2 parts of ester, 1.2 parts of 1801 organic stearic acid, 4 parts of dibutyltin dilaurate (DBTDL), 4 parts of zinc oxide, 3 parts of 1010 antioxidant, microcapsules made of urea-formaldehyde resin coated dicyclopentadiene system 2 parts, Grubbs catalyst 0.02 parts.

[0035] The microcapsules made of urea-formaldehyde resin coated dicyclopentadiene system are prepared by the following method: first, 1 part by weight of urea and 2 parts of formaldehyde solution with 37% concentration are mixed and stirred mechanically, and the pH is adjusted with triethanolamine to 8 to 9, react at 65 to 75°C for 1 to 1.5 hours, add 7 to 8 parts of water to form solution A, and then mix 0.2 to 0.4 parts of emulsifier sodium dodecylbenzenesulfonate with 2 to 3 parts of Mi...

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PUM

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Abstract

The invention discloses a cable insulation material with a self-repairing function. The cable insulation material is composed of the following components in parts by weight: 100 parts of low density polyethylene, 2-4 parts of vinyl trimethoxy silane, 0.08-0.2 part of tert-butyl peroxy-3,5,5-trimethylhexanoate, 0.4-1.2 parts of 1801 organic stearic acid, 1.5-4 parts of dibutyltin dilaurate, 1.5-4.5 parts of zinc oxide, 1.8-3.2 parts of 1010 antioxidants, 1-5 parts of microcapsules prepared by a urea resin coated dicyclopentadiene system and 0.02-0.03 part of a Grubbs catalyst. According to the cable insulation material with the self-repairing function disclosed by the invention, due to the effects of the microcapsules prepared by the urea resin coated dicyclopentadiene system and the Grubbs catalyst in the formula, a self-repairing crosslinked polyethylene cable insulation material in the invention has excellent performance of repairing electric tree defects.

Description

technical field [0001] The invention belongs to the technical field of cables and materials, and in particular relates to a cable insulation material with self-repairing function. Background technique [0002] XLPE insulated cables are widely used in electric power, construction, industrial and mining, metallurgy, petroleum, chemical industry, transportation and other departments. They have completely replaced oil-impregnated paper insulated cables and partially replaced PVC insulated power cables. The cables have been in long-term operation on site. Under these conditions, under the comprehensive action of multiple factors such as electricity, heat, machinery, and chemistry, defects such as electric branches and water branches will be generated, resulting in a decrease in insulation performance, and eventually cable insulation will be broken down, causing serious power outages. [0003] In view of the problems raised above, it is necessary to develop a cable insulation mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/10C08K5/01C08K5/5425C08K5/14C08K5/09H01B3/44
CPCC08K13/06C08K5/01C08K5/09C08K5/14C08K5/5425C08K9/10C08L2203/202C08L2207/066H01B3/441C08L23/06
Inventor 王有元陈伟根廖瑞金李剑杜林周湶王飞鹏张占喜王灿肖坤
Owner CHONGQING UNIV
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