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A kind of high-voltage DC cable material containing highly dispersed fullerene and its preparation method

A high-voltage direct current, fullerene technology, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of affecting the mechanical and electrical properties of cables, weak space charge suppression ability, and inability to effectively disperse, etc., to achieve Improving DC volume resistivity and DC breakdown strength, inhibiting the accumulation of space charges, and facilitating industrial production

Active Publication Date: 2020-11-27
曹胜伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the influence of space charge on the currently widely used high-voltage DC cables, the medium is easy to break down, the insulating material is prone to electric tree branching, and the problem of easy aging is prominent. However, when the traditional inorganic filler is added for modification, the filler is compatible with the matrix resin. Poor performance, unable to effectively disperse, and then affect the mechanical properties and electrical properties of the cable, the space charge suppression ability is weak, the invention proposes a high-voltage DC cable material containing highly dispersed fullerene and its preparation method, thereby effectively improving the fullerene powder. The dispersion in the cable material improves the mechanical and electrical properties of the cable

Method used

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  • A kind of high-voltage DC cable material containing highly dispersed fullerene and its preparation method
  • A kind of high-voltage DC cable material containing highly dispersed fullerene and its preparation method

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Effect test

Embodiment 1

[0039] The parts by weight of the raw material components of the high-voltage DC cable material are:

[0040]4 parts of fullerene doped with aluminum foam, 2 parts of polyvinyl chloride powder, 76 parts of thermoplastic polyurethane elastomer, 10 parts of calcium carbonate, 3 parts of flame retardant, 4 parts of plasticizer, 1 part of anti-aging agent; thermoplastic polyurethane elastomer The body is polyester type, the hard segment content is 70%, and the isocyanate index is 0.9; the flame retardant is disodium hydrogen phosphate; the plasticizer is diethyl phthalate; the anti-aging agent is N-phenyl-α-aniline ;

[0041] The preparation process of high voltage DC cable material is as follows:

[0042] (1) Mix acetylene carbon black and foamed aluminum evenly, spread it on the ceramic sheet in the reaction chamber, evacuate the reaction chamber, slowly inject argon gas, turn on the microwave generator, cool to room temperature after 60 minutes of reaction, and stop the introd...

Embodiment 2

[0047] The parts by weight of the raw material components of the high-voltage DC cable material are:

[0048] 3 parts of fullerene doped with aluminum foam, 2 parts of polyvinyl chloride powder, 81 parts of thermoplastic polyurethane elastomer, 8 parts of calcium carbonate, 2 parts of flame retardant, 3 parts of plasticizer, 1 part of anti-aging agent; thermoplastic polyurethane elastomer The body is polyester type, the hard segment content is 60%, and the isocyanate index is 0.85; the flame retardant is lithium phosphate; the plasticizer is dioctyl terephthalate; the anti-aging agent is N-phenyl-β-naphthylamine;

[0049] The preparation process of high voltage DC cable material is as follows:

[0050] (1) Mix acetylene carbon black and foamed aluminum evenly, spread it on the ceramic sheet in the reaction chamber, evacuate the reaction chamber, slowly inject argon gas, turn on the microwave generator, cool to room temperature after reacting for 50 minutes, and stop feeding A...

Embodiment 3

[0055] The parts by weight of the raw material components of the high-voltage DC cable material are:

[0056] 5 parts of fullerene doped with aluminum foam, 3 parts of polyvinyl chloride powder, 69 parts of thermoplastic polyurethane elastomer, 13 parts of calcium carbonate, 4 parts of flame retardant, 5 parts of plasticizer, 1 part of anti-aging agent; thermoplastic polyurethane elastomer The body is polyester type, the hard segment content is 80%, and the isocyanate index is 1; the flame retardant is magnesium phosphate; the plasticizer is dioctyl adipate; the antiaging agent is p-phenylenediamine;

[0057] The preparation process of high voltage DC cable material is as follows:

[0058] (1) Mix acetylene carbon black and foamed aluminum evenly, spread it on the ceramic sheet in the reaction chamber, evacuate the reaction chamber, slowly inject argon gas, turn on the microwave generator, cool to room temperature after 570 minutes of reaction, and stop the introduction argon...

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Abstract

The invention provides a high-voltage DC cable material containing high-dispersion fullerene and a preparation method of the high-voltage DC cable material. The preparation method comprises the following steps: mixing acetylene carbon black with foamed aluminium; pumping argon into the mixture in a vacuum state; utilizing microwaves to prepare foamed-aluminium-doped fullerene; after mixing foamed-aluminium-doped fullerene with polyvinyl chloride powder, performing high-voltage corona treatment to obtain a composite filler with a core-shell structure; mixing the composite filler with the core-shell structure with a thermoplastic polyurethane elastomer, calcium carbonate, a fire retardant, a plasticizer and an antiager; and performing extrusion, granulation and drying to obtain the high-voltage DC cable material. According to the preparation method, the core-shell structure is formed by the foamed-aluminium-doped fullerene and polyvinyl chloride powder, so that the dispersibility and theelectrical conductivity of fullerene powder in polyvinyl chloride are greatly improved, the mechanical performance, the DC volume resistivity and the DC breakdown strength of the cable material are remarkably improved, the space charge inhibition effect is extremely good, the service life is long, the preparation process is simple, the cost is low, and industrial production is convenient.

Description

technical field [0001] The invention relates to the technical field of cable material preparation, in particular to the preparation of fullerene-containing cable material, in particular to a high-voltage DC cable material containing highly dispersed fullerene and a preparation method thereof. Background technique [0002] HVDC transmission technology has developed rapidly in the power system in recent years, and it is mainly used in long-distance large-capacity power transmission, power system networking, long-distance submarine cable or metropolitan underground cable power transmission, and DC transmission of power distribution networks. DC transmission and AC transmission cooperate with each other to form a modern power transmission system. Compared with AC transmission, it has the characteristics of large transmission capacity, small line loss, no reactive power, convenient power connection, easy control and adjustment. The magnitude and direction of the transmitted powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/06C08L27/06C08K13/02C08K3/04C08K3/26C08K3/08H01B3/30
CPCC08K2003/0812C08K2003/265C08K2201/001C08K2201/006C08L75/06C08L2203/202C08L2207/04H01B3/302C08L27/06C08K13/02C08K3/04C08K3/26C08K3/08
Inventor 陈庆昝航
Owner 曹胜伟
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