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Rubber for cable insulation outer walls and production method thereof

A technology of cable insulation and insulation outer wall, applied in the field of new electrical insulation materials, can solve the problems of poor impact resistance, anti-oxidation, anti-static and high temperature resistance, high temperature and even fire, fire and combustion, etc., to reduce fire damage and prevent leakage Accidents, the effect of preventing the spread of fire

Inactive Publication Date: 2014-12-03
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The insulating material of the outer wall of the cable is an important guarantee to ensure the insulation level of the cable, and it is an important indicator of the quality of the cable product. At present, the insulating material of the outer wall of the high-voltage cable is mainly made of rubber or plastic. Among them, the rubber material has good flexibility and reliable insulation. and other characteristics have a wide range of applications, but the insulating rubber materials for the outer wall of cables currently used often only have good insu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: A rubber for the outer wall of cable insulation, made of the following raw materials in weight percentage: sodium stearate: 1%, antioxidant: 2%, titanium dioxide: 3%, zinc oxide: 3%, antistatic agent: 1%, calcium carbonate powder with a diameter of 0.5mm: 15%, insulating ceramic particles with a diameter of 0.3mm: 15%, accelerator: 3%, asbestos fiber: 10%, carbon black: 10%, graphite fiber: 5%, plus Odorant: 1%, the balance is neoprene.

[0016] Its production method comprises the steps of:

[0017] The first step: crushing, crushing the neoprene raw material, and the diameter of the crushed rubber particles is not greater than 0.5 mm;

[0018] The second step: mixing, add sodium stearate, antioxidant, titanium dioxide, zinc oxide, antistatic agent, calcium carbonate powder, insulating ceramic particles, asbestos fiber, carbon black and graphite in proportion to the molten neoprene rubber fiber, and stir well;

[0019] The third step: kneading, heat the pr...

Embodiment 2

[0022] Example 2: A rubber for the outer wall of cable insulation, made of the following raw materials in weight percentage: sodium stearate: 0.5%, antioxidant: 1%, titanium dioxide: 5%, zinc oxide: 4%, antistatic agent: 0.5%, calcium carbonate powder with a diameter of 0.1 mm: 15%, insulating ceramic particles with a diameter of 0.1 mm: 10%, accelerator: 5%, asbestos fiber: 10%, carbon black: 8%, graphite fiber: 10%, plus Odorant: 2%, the balance is neoprene.

[0023] Its production method comprises the steps of:

[0024] The first step: crushing, crushing the neoprene raw material, and the diameter of the crushed rubber particles is not greater than 0.5 mm;

[0025] The second step: mixing, add sodium stearate, antioxidant, titanium dioxide, zinc oxide, antistatic agent, calcium carbonate powder, insulating ceramic particles, asbestos fiber, carbon black and graphite in proportion to the molten neoprene rubber fiber, and stir well;

[0026] The third step: kneading, heat ...

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Abstract

The invention discloses a rubber for cable insulation outer walls, which is prepared from the following raw materials in percentage by weight: 0.1-3% of sodium stearate, 1-3% of antioxidant, 3-5% of titanium dioxide, 3-5% of zinc oxide, 0.1-1% of antistatic agent, 3-15% of calcium carbonate powder, 5-15% of insulating ceramic particle, 2-5% of accelerator, 5-10% of asbestos fiber, 3-10% of carbon black, 1-10% of graphite fiber, 0.01-3% of odorizer and the balance of chloroprene rubber. The production method comprises the following steps: pulverizing, mixing, compounding, cooling and pulverizing. The method effectively enhances the insulating property of the rubber, greatly improves the impact resistance, antistatic property, aging resistance and toughness of the rubber product, increases the thermal decomposition temperature of the rubber, can effectively lower the hidden danger of fire hazards on the premise of enhancing the electric insulation performance and preventing the leakage accidents, and can effectively prevent the fire behavior from overspreading, thereby achieving the effect of lowering the damage of the fire hazards.

Description

technical field [0001] The invention relates to a rubber used for insulating outer walls of cables and a production method thereof, belonging to the technical field of new electric insulating materials. Background technique [0002] The insulating material of the outer wall of the cable is an important guarantee to ensure the insulation level of the cable, and it is an important indicator of the quality of the cable product. At present, the insulating material of the outer wall of the high-voltage cable is mainly made of rubber or plastic. Among them, the rubber material has good flexibility and reliable insulation. and other characteristics have a wide range of applications, but the insulating rubber materials for the outer wall of cables currently used often only have good insulation properties and good flexibility, but relatively poor impact resistance, anti-oxidation, anti-static and high-temperature resistance, and are easy to cause External force damages or fires and b...

Claims

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Application Information

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IPC IPC(8): C08L11/00C08K13/04C08K3/26C08K5/098C08K3/22C08K7/12C08K3/04
Inventor 程爱武杨梦姣
Owner STATE GRID CORP OF CHINA
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