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A black weather-resistant polyethylene insulating material for overhead cables and its preparation method

A polyethylene insulating material, overhead cable technology, applied in insulators, circuits, electrical components, etc., can solve problems such as limitations, and achieve the effects of improving uniformity, tight integration, and simple process flow

Inactive Publication Date: 2016-01-27
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its biggest disadvantage is the existence of dendrite breakdown, which limits its use at higher voltages

Method used

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  • A black weather-resistant polyethylene insulating material for overhead cables and its preparation method
  • A black weather-resistant polyethylene insulating material for overhead cables and its preparation method
  • A black weather-resistant polyethylene insulating material for overhead cables and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A black weather-resistant polyethylene insulating material for overhead cables, characterized in that the mass percentage of the raw materials is:

[0056]

[0057] The preparation method of described modified polyester, its concrete steps are:

[0058](1) Disperse inorganic particles under the condition that alcohol is a solvent, and the alcohol solution is ethanol, methanol or isopropanol solution; then under alkaline conditions, add aminotriethoxysilane, and carry out centrifugation after the reaction, to The solid is vacuum-dried to obtain surface-functionalized inorganic particles;

[0059] The concentration of the inorganic particles in the alcohol solution is 5-35kg / m 3 , the pH of the system is controlled to be 8.5 to 9.5, the reaction temperature is 60 to 75 °C, and the reaction time is 150 to 240 min;

[0060] The inorganic particles are nanometer indium tin oxide, nanometer indium antimony oxide and nanometer zinc oxide, the mass ratio of the three is 1:...

Embodiment 2

[0076] A black weather-resistant polyethylene insulating material for overhead cables, characterized in that the mass percentage of the raw materials is:

[0077]

[0078]

[0079] The preparation method of described modified polyester, its concrete steps are:

[0080] (1) Disperse inorganic particles under the condition that alcohol is a solvent, and the alcohol solution is ethanol, methanol or isopropanol solution; then under alkaline conditions, add aminotriethoxysilane, and carry out centrifugation after the reaction, to The solid is vacuum-dried to obtain surface-functionalized inorganic particles;

[0081] The concentration of the inorganic particles in the alcohol solution is 5-35kg / m 3 , the pH of the system is controlled to be 8.5 to 9.5, the reaction temperature is 60 to 75 °C, and the reaction time is 150 to 240 min;

[0082] The inorganic particles are nanometer indium tin oxide, nanometer indium antimony oxide and nanometer zinc oxide, the mass ratio of th...

Embodiment 3

[0100] A black weather-resistant polyethylene insulating material for overhead cables, characterized in that the mass percentage of the raw materials is:

[0101]

[0102] The preparation method of described modified polyester, its concrete steps are:

[0103] (1) Disperse inorganic particles under the condition that alcohol is a solvent, and the alcohol solution is ethanol, methanol or isopropanol solution; then under alkaline conditions, add aminotriethoxysilane, and carry out centrifugation after the reaction, to The solid is vacuum-dried to obtain surface-functionalized inorganic particles;

[0104] The concentration of the inorganic particles in the alcohol solution is 5-35kg / m 3 , the pH of the system is controlled to be 8.5 to 9.5, the reaction temperature is 60 to 75 °C, and the reaction time is 150 to 240 min;

[0105] The inorganic particles are nanometer indium tin oxide, nanometer indium antimony oxide and nanometer zinc oxide, the mass ratio of the three is 1...

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Abstract

The invention relates to a black weatherproof polyethylene insulation material for an aerial cable and a preparation method for the same. The black weatherproof polyethylene insulation material comprises the raw materials in percentage by mass: 1-5% of modified polyester, 0.1-0.5% of auxiliaries, 1-5% of carbon black, 10-40% of modified low density polyethylene, and the balance of organosilane crosslinked polyethylene. The preparation method comprises the following specific steps: mixing modified polyester, auxiliaries, carbon black, modified low density polyethylene and organosilane crosslinked polyethylene in a proportioning ratio, and then melting and granulating to obtain the black weatherproof polyethylene insulation material. According to the black weatherproof polyethylene insulation material and the preparation method disclosed by the invention, rice husk and straw are subjected to low-temperature carbonization, therefore, on the one hand, cost is saved, and on the other hand, the original functions of rice husk are kept; the black weatherproof polyethylene insulation material can be used as an adsorbed carrier for exerting the effects of rice husk and straw; and the original performances of rice husk and straw are influenced due to too high temperature and too long time of carbonization.

Description

【Technical field】 [0001] The invention relates to the technical field of electric power materials, in particular to a black weather-resistant polyethylene insulating material for overhead cables and a preparation method thereof. 【Background technique】 [0002] The insulating layer of plastic insulated power cables is plastic, and the commonly used plastics are polyvinyl chloride, polyethylene, and cross-linked polyethylene. The plastic cable has the advantages of simple structure, convenient manufacturing and processing, light weight, convenient laying and installation, and is not limited by the laying drop. Therefore, it is widely used as medium and low voltage cables, and has a tendency to replace sticky impregnated oil-paper cables. Its biggest disadvantage is the presence of dendritic breakdown, which limits its use at higher voltages. [0003] The continuous and rapid growth of China's economy has provided a huge market space for cable products. The strong temptation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L67/02C08L53/02C08K13/06C08K9/06C08K9/02C08K3/22C08K3/04C08G63/20C08G63/78
CPCC08G63/20C08G63/78C08L23/26C08L2023/44C08L2201/02C08L2203/202C08L2205/03C08L2205/035H01B3/441C08L23/06C08L67/02C08K13/06C08K9/02C08K2003/2231C08K3/2279C08K2003/2296C08K3/04C08L53/02
Inventor 张立李昕沈太英金文东
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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