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High-voltage DC electric wire cable insulation material and preparation process thereof

A wire and cable, high-voltage direct current technology, applied in the direction of conductor/cable insulation, cable/conductor manufacturing, insulated conductors, etc., can solve the problems of electric field distortion, deterioration, material aging performance, etc., and achieve good aging resistance and long service life long effect

Inactive Publication Date: 2016-11-02
潘明华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the DC electric field, the cable insulation material is very easy to accumulate a large amount of space charge, causing local electric field distortion, affecting the dielectric strength of the insulation material, aging the material or deteriorating its performance, leading to breakdown of the insulation material, and seriously affecting the service life of the DC cable. , which also restricts the vigorous promotion of HVDC transmission in my country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] High-voltage DC wire and cable insulation material, prepared from the following raw materials in parts by weight: 50 parts of methyl vinyl silicone rubber, 23 parts of silicone resin, 10 parts of terpene resin, 6 parts of polyvinylidene chloride, 3-hexyl substituted 4 parts of polythiophene, 2 parts of chlorinated polyethylene, 3 parts of nickel oxide, 0.6 parts of praseodymium oxide, 1.2 parts of carbon quantum dots, 2 parts of fumed silica, 2,2'-(1,2-ethylenediyldioxy Substitute) 2 parts of diethanethiol, 1 part of pitch-based carbon fiber, 3 parts of itaconic acid, 4 parts of calcium ricinoleate, 3 parts of γ-mercaptopropyltriethoxysilane, 2 parts of propylene-ethylene semi-crystalline copolymer , 1 part of ethylene-octene copolymer, 3 parts of benzoin dimethyl ether, 2 parts of calcium hydroxide, 3 parts of trioctyl trimellitate, 0.2 part of trilead tetraoxide.

[0025] The pitch-based carbon fiber is prepared from petroleum pitch and coal pitch in a weight ratio of...

Embodiment 2

[0033] High-voltage DC wire and cable insulation material, prepared from the following raw materials in parts by weight: 65 parts of methyl vinyl silicone rubber, 38 parts of silicone resin, 17 parts of terpene resin, 15 parts of polyvinylidene chloride, 3-hexyl substituted 10 parts of polythiophene, 6 parts of chlorinated polyethylene, 8 parts of nickel oxide, 4 parts of praseodymium oxide, 3 parts of carbon quantum dots, 2-5 parts of fumed silica, 2,2'-(1,2-ethanediyl Dioxo) diethanethiol 5 parts, pitch-based carbon fiber 6 parts, itaconic acid 7 parts, calcium ricinoleate 9 parts, γ-mercaptopropyltriethoxysilane 9 parts, propylene-ethylene semi-crystalline copolymer 6 parts, 4 parts of ethylene-octene copolymer, 8 parts of benzoin dimethyl ether, 7 parts of calcium hydroxide, 6 parts of trioctyl trimellitate, 1.5 parts of trilead tetraoxide.

[0034] The pitch-based carbon fiber is prepared from petroleum pitch and coal pitch in a weight ratio of 3:5.

[0035] The preparat...

Embodiment 3

[0042] High-voltage DC wire and cable insulation material, prepared from the following raw materials in parts by weight: 57 parts of methyl vinyl silicone rubber, 30 parts of silicone resin, 13 parts of terpene resin, 10 parts of polyvinylidene chloride, 3-hexyl substituted 7 parts of polythiophene, 4 parts of chlorinated polyethylene, 5.5 parts of nickel oxide, 2.3 parts of praseodymium oxide, 2.1 parts of carbon quantum dots, 3.5 parts of fumed silica, 2,2'-(1,2-ethylenediyldioxy Substitute) 3.5 parts of diethanethiol, 3.5 parts of pitch-based carbon fiber, 5 parts of itaconic acid, 6.5 parts of calcium ricinoleate, 6.5 parts of γ-mercaptopropyl triethoxysilane, 4 parts of propylene-ethylene semi-crystalline copolymer , 2.5 parts of ethylene-octene copolymer, 5.5 parts of benzoin dimethyl ether, 4 parts of calcium hydroxide, 5 parts of trioctyl trimellitate, and 0.8 part of trilead tetraoxide.

[0043] The pitch-based carbon fiber is prepared from petroleum pitch and coal pi...

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Abstract

The invention discloses a high-voltage DC electric wire cable insulation material and a preparation process thereof. The insulation material is prepared from the raw materials of: methyl vinyl silicone rubber, organic silicone resin, terpene resin, polyvinylidene chloride, 3-hexyl substituted polythiophene, chlorinated polyethylene, nickel oxide, praseodymium oxide, carbon quantum dots, fumed silica, 2,2'-(1,2-ethylenedioxy)diethanethiol, asphalt-based carbon fibers, itaconic acid, calcium ricinoleate, [gamma] -mercaptopropyl triethoxysilane, an propylene-ethylene semi-crystalline copolymer, an ethylene-octylene copolymer, benzoin dimethyl ether, calcium hydroxide, trioctyl trimellitate, and Pb3O4. The insulation material is higher than 17 MPa in tensile strength, is 230% in break elongation, and is free of breakdown under a 120 kV DC voltage test for 15 min, has good anti-aging property and long service life after the DC voltage test, and is very suitable for being widely applied as a high-voltage DC electric wire cable insulation material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to high-voltage direct-current wire and cable insulating materials and a preparation process thereof. Background technique [0002] As we all know, high-voltage cables have been widely used in high-voltage power transmission and transformation networks due to their advantages such as less land occupation, personal safety guarantee, high power supply reliability, convenient laying, and less maintenance workload. High-voltage DC cables have become an important part of the high-voltage cable system due to their advantages such as high working electric field strength, small loss, small cable outer diameter, light weight, easy manufacturing and installation, easy control and adjustment, large carrying capacity, no AC magnetic field, and environmental protection. . With the rapid development of urban construction, the requirements for the scale of power transmission...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08L45/00C08L27/08C08L65/00C08L23/28C08L23/16C08L23/08C08K13/04C08K7/06C08K3/36C08K3/22C08K5/098H01B3/28H01B7/02H01B13/14
CPCC08L83/04C08L2203/202C08L2205/025C08L2205/035H01B3/28H01B7/0275H01B13/148C08L45/00C08L27/08C08L65/00C08L23/286C08L23/142C08L23/0815C08K13/04C08K7/06C08K3/36C08K2003/2293C08K5/098
Inventor 潘明华
Owner 潘明华
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