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Cable insulation material and the preparation method thereof

A cable insulation and raw material technology, applied in the field of cable insulation materials and its preparation, can solve the problems of low breakdown voltage, poor heat resistance, etc., achieve improved breakdown voltage, good voltage breakdown resistance, prevent interface corona and The effect of the discharge phenomenon

Inactive Publication Date: 2018-02-02
SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of poor heat resistance and low breakdown voltage in existing polyethylene insulating materials used for cables, and provide a cable insulating material and a preparation method thereof; the present invention first modifies basalt fibers, And load a very small amount of graphene, and finally mix and modify with polyethylene, which significantly improves the insulation, high temperature resistance and voltage breakdown resistance of polyethylene, and the quality of the cable is significantly improved, so that the cable can be used in high temperature and high voltage environments. Medium and long-term work application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) 15 parts of basalt fiber containing 0.8% by weight with an aspect ratio of 2:1, alumina whiskers with a diameter of 5nm and 1.6% of basalt fibers with a particle size of 10nm nano-silica are used in a mass ratio of 8 parts Treated with 3:2 hydrogen peroxide and acetic acid to obtain modified basalt fiber;

[0033] (2) Load 0.002 parts of graphene uniformly on the modified basalt fiber;

[0034] (3) Mix and extrude 15 parts of vinyl silicone rubber and graphene-loaded modified basalt fiber to obtain an intermediate;

[0035] (4) The intermediate is uniformly mixed with 60 parts of polyethylene and 0.3 parts of vinyl triethoxy silane and then extruded with an extruder to obtain a cable insulation material.

Embodiment 2

[0037] (1) Treat 15 parts of ordinary basalt fiber with 8 parts of hydrogen peroxide and formic acid with a mass ratio of 2:1 to obtain modified basalt fiber;

[0038] (2) Load 0.002 parts of graphene uniformly on the modified basalt fiber;

[0039] (3) Mix and extrude 15 parts of vinyl silicone rubber and graphene-loaded modified basalt fiber to obtain an intermediate;

[0040] (4) The intermediate is uniformly mixed with 60 parts of polyethylene and 0.3 parts of vinyl triethoxy silane and then extruded with an extruder to obtain a cable insulation material.

Embodiment 3

[0042] (1) 10 parts of basalt fiber containing 0.1% by weight with an aspect ratio of 1.5:1, alumina whiskers with a diameter of 10nm and 2.8% of basalt fibers with a particle size of 2nm nano-silica with 5 parts by weight Treated with 4:1 hydrogen peroxide and oxalic acid to obtain modified basalt fiber;

[0043] (2) Load 0.001 parts of graphene uniformly on the modified basalt fiber;

[0044] (3) Mix and extrude 20 parts of vinyl silicone rubber and modified basalt fiber loaded with graphene to obtain an intermediate;

[0045] (4) The intermediate is uniformly mixed with 70 parts of polyethylene and 0.1 part of vinyl triethoxy silane and then extruded with an extruder to obtain a cable insulation material.

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PUM

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Abstract

The invention discloses a cable insulating material and a preparation method thereof. The cable insulating material is prepared from the following raw materials in parts by weight: 10-20 parts of basalt fiber, 0.001-0.003 parts of graphene, and 10-20 parts of vinyl Silicone rubber, 50-70 parts of polyethylene, 5-12 parts of modifying agent, 0.1-0.5 part of cross-linking agent; said modifier includes hydrogen peroxide and organic Acid; the cable insulation material has excellent insulation, high temperature resistance and breakdown resistance, used in cables, can significantly improve the quality of cables, so that the cables can be used in higher temperature and high voltage environments.

Description

Technical field [0001] The invention relates to the field of cable materials, in particular to a cable insulating material and a preparation method thereof. Background technique [0002] A cable is a wire formed by twisting one or more wires into a conductor core, and then applying a corresponding insulation layer on the conductor, and a sealed sheath on the outer cover. It is mainly composed of a core, an insulation layer and a shielding layer. And the sheath layer. The cable has the advantages of occupying the ground and less space; the power supply is safe and reliable, and the possibility of electric shock is small; it is beneficial to improve the power factor of the power system; the operation and maintenance are simple and convenient; it is beneficial to beautify the city, has many advantages such as confidentiality, and is widely used in life And all areas of production. [0003] The function of the insulating layer in the cable is to electrically isolate the wire core fro...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L83/07C08K13/06C08K9/04C08K9/02C08K7/10C08K3/36C08K7/08C08K5/5425H01B3/44
CPCC08L23/06C08K2201/003C08K2201/011C08K2201/016C08L2201/02C08L2201/08C08L2203/202H01B3/441C08L83/04C08K13/06C08K9/04C08K9/02C08K7/10C08K3/36C08K7/08C08K5/5425
Inventor 舒春柳
Owner SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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