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Tracking-resistant cable material and preparation method thereof

A technology of cable material and electric tracking resistance, which is applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., and can solve the problems of electric tracking and damage of materials

Active Publication Date: 2021-05-11
ZHEJIANG WANMA MACROMOLECULE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the sheath material, although the tracking resistance agent is used to improve the tracking resistance of the sheath material, and the anti-oxidant is used to improve the UV resistance of the sheath material, but the antioxidant is a chain-terminated antioxidant. It is difficult to prevent the ultraviolet rays generated by corona discharge from causing electric tracking of polyethylene sheaths. The reason is that in the process of tracking and tracking, there are mainly three discharge forms, among which, the spectrum of corona discharge is mainly concentrated in the ultraviolet region. The energy generated by ultraviolet rays is relatively large. According to wien quantification, when a black body radiates ultraviolet rays with a wavelength of 340nm, its surface temperature can reach 14880F, which is enough to carbonize the material, which in turn leads to electrical tracking damage of the material

Method used

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  • Tracking-resistant cable material and preparation method thereof

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Embodiment 1

[0039] A tracking-resistant cable material is characterized in that it comprises component A and component B with a mass ratio of 92:8.

[0040] Component A includes the following raw materials in mass percentage: 75% of silane crosslinked polyethylene, 24.7% of magnesium hydroxide, 0.3% of silane coupling agent KH-550, the total amount is 100%;

[0041] Component B includes the following raw materials in mass percentage: 50% of ultraviolet absorber UV-531, 49% of polyethylene, 1% of dibutyltin dilaurate, and the total amount is 100%.

[0042] A preparation method of the electric tracking-resistant cable material, comprising the following steps:

[0043] (1) Weighing and mixing silane cross-linked polyethylene, magnesium hydroxide, and silane coupling agent according to the proportion, and then adding them into a twin-screw extruder for mixing and extrusion granulation to obtain component A;

[0044] (2) Weigh and mix the ultraviolet absorber, polyethylene, and crosslinking c...

Embodiment 2

[0047] A tracking-resistant cable material is characterized in that it comprises component A and component B with a mass ratio of 92:8.

[0048] Component A includes the following raw materials in mass percentage: 75% silane cross-linked polyethylene, 0.5% 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid, 0.7% 4-hydroxy-3,5 -Dimethylbenzoic acid, magnesium hydroxide 28.8%, total 100%;

[0049] Component B includes the following raw materials in mass percentage: 50% of ultraviolet absorber UV-531, 49% of polyethylene, 1% of dibutyltin dilaurate, and the total amount is 100%.

[0050] A preparation method of the electric tracking-resistant cable material, comprising the following steps:

[0051] (1) Weighing and mixing silane cross-linked polyethylene, magnesium hydroxide, and silane coupling agent according to the proportion, and then adding them into a twin-screw extruder for mixing and extrusion granulation to obtain component A;

[0052] (2) Weigh and mix the ultraviol...

Embodiment 3

[0055] A tracking-resistant cable material is characterized in that it comprises component A and component B with a mass ratio of 92:8.

[0056] Component A includes the following raw materials in mass percentage: 75% of silane crosslinked polyethylene, 30% of hindered phenol composite magnesium hydroxide, the total amount is 100%;

[0057] Component B includes the following raw materials in mass percentage: 50% of ultraviolet absorber UV-531, 49% of polyethylene, 1% of dibutyltin dilaurate, and the total amount is 100%.

[0058] The preparation method of the hindered phenol composite magnesium hydroxide is as follows:

[0059] (1) Aminosilane coupling agent KH-550 is added in ethanol aqueous solution (wherein, the volume ratio of ethanol and water is 10:1) with the mass volume ratio of 1g:5mL, after mixing uniformly, make coupling agent solution; Put magnesium hydroxide into a high-speed mixer, slowly inject the coupling agent solution under stirring, the mass ratio of magne...

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PUM

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Abstract

The invention relates to the field of cable materials, and discloses a tracking-resistant cable material and a preparation method thereof. The tracking-resistant cable material comprises a component A and a component B, wherein the component A is prepared from the following raw materials in percentage by mass: 70-80% of silane crosslinked polyethylene, 20-30% of magnesium hydroxide and 0-0.5% of a silane coupling agent, and the total amount is 100%; and the component B comprises the following raw materials in percentage by mass: 30-50% of an ultraviolet light absorber, 49-69% of polyethylene and 1-2% of a crosslinking catalyst, and the total amount is 100%. According to the cable material disclosed by the invention, magnesium hydroxide and the ultraviolet light absorber are added, so that tracking damage under the action of ultraviolet rays and heat can be prevented, and the cable material has higher tracking resistance.

Description

technical field [0001] The invention relates to the field of cable materials, in particular to an electric tracking-resistant cable material and a preparation method thereof. Background technique [0002] Aerial cables are usually used for high-current and high-voltage power transmission, and are erected in open outdoor environments. This requires the stability and long-term operation of overhead cables. However, the surface of power equipment is prone to pollution flashover under wet conditions (natural rain, snow, frost, etc.). When pollution flashover occurs on equipment, it is easy to cause a large-scale power outage, and the accompanying strong arc can also cause damage to electrical equipment, prolonging the power outage time, and seriously threatening the safe and stable operation of the power system. Therefore, overhead cable materials need to be able to adapt to outdoor sunlight and rain. At the same time, the cable will generate a higher temperature when transmit...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K9/04C08K9/06C08K3/22C08K5/13C08K13/06H01B3/44
CPCC08L23/06H01B3/441C08K2201/014C08K2003/2224C08L2201/08C08L2203/202C08L2205/025C08K9/04C08K9/06C08K9/08C08K3/22C08K5/13C08K13/06
Inventor 洪向明关江伟于西王海涛黄远远吕欣章剑平
Owner ZHEJIANG WANMA MACROMOLECULE MATERIAL
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