Insulating-layer semiconductive shielding material for ethylene propylene rubber cable

A technology of ethylene propylene rubber and shielding material, which is applied in the field of cable shielding material and insulating layer semi-conductive shielding material for ethylene propylene rubber cable, can solve the problem that the insulating shielding layer has no peelability, poor ozone aging resistance, and chemical resistance. Poor performance and other problems, to achieve the effect of improving anti-reversion performance, good shielding performance and shortening mixing time

Inactive Publication Date: 2016-01-06
山东太平洋橡缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing insulating layer and semi-conductive shielding layer materials are mainly made of polar neoprene rubber, chlorinated polyethylene rubber, electric graphite, acetylene carbon black, etc., and the mechanical properties of the semi-conductive shielding layer made of neoprene rubber can meet Requirements, good oil resistance, but poor thermal oxygen aging resistance, ozone aging resistance, poor electrical performance, and high cost; the mechanical properties of the semi-conductive shielding layer made of chlorinated polyethylene rubber can meet the requirements, good oil resistance, and low cost , but poor thermal oxygen aging resistance, ozone aging resistance, acid and alkali resistance, chemical resistance and electrical performance
The above-mentioned materials have poor capacity to accommodate fillers. With the addition of a large amount of conductive carbon black, the fluidity of the rubber compound becomes poor, and it is difficult to extrude. The insulating shielding layer does not have peelability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: according to the raw materials involved in the active ingredient of this ethylene-propylene rubber cable insulation layer semi-conductive shielding material formula and the proportioning by weight, get nitrile rubber, 60 parts, chlorinated polyethylene rubber, 40 parts, cable powder , 30 parts, magnesium oxide, 6 parts, acetylene carbon black, 50 parts, high wear-resistant carbon black, 15 parts, paraffin wax, 2.0 parts, antioxidant, 3 parts, dioctyl phthalate, 25 parts, rubber dispersion Agent, 0.6 parts, stearic acid, 3 parts, vulcanizing agent, 5 parts. After mixing the obtained nitrile rubber and chlorinated polyethylene rubber, enter the internal mixer for masticating, masticate for 3-4 minutes, add magnesium oxide, anti-aging agent, stearic acid, stearic acid, rubber dispersant for mixing , then add cable powder, acetylene carbon black, and high wear-resistant carbon black for mixing, then add dioctyl phthalate (added after fillers and reinforcing ag...

Embodiment 2

[0030] Embodiment 2: according to the raw material involved in the active ingredient of this ethylene-propylene rubber cable insulation layer semi-conductive shielding material formula and the proportioning by weight, get nitrile rubber, 65 parts, chlorinated polyethylene rubber, 35 parts, cable powder , 35 parts, magnesium oxide, 7 parts, acetylene carbon black, 60 parts, high wear-resistant carbon black, 20 parts, paraffin wax, 3.0 parts, antioxidant, 5 parts, dioctyl phthalate, 20 parts, polyethylene Wax 410P, 0.8 parts, stearic acid, 3.5 parts, vulcanizing agent, 6 parts. After mixing the nitrile rubber and chlorinated polyethylene rubber, put them into the internal mixer for mastication, mastication for 3-4 minutes, add magnesium oxide, anti-aging agent, stearic acid, stearic acid, polyethylene wax 410P for Mix, then add cable powder, acetylene carbon black, high wear-resistant carbon black for mixing, then add dioctyl phthalate (added after filler and reinforcing agent) ...

Embodiment 3

[0031] Embodiment 3: according to the raw material involved in the active ingredient of this ethylene-propylene rubber cable insulating layer semi-conductive shielding material formula and the weight ratio, get nitrile rubber N220S, 70 parts, chlorinated polyethylene rubber, 30 parts, cable Powder, 45 parts, magnesium oxide, 6.5 parts, acetylene carbon black, 55 parts, high wear-resistant carbon black, 25 parts, paraffin wax, 3.5 parts, antioxidant, 7 parts, dioctyl phthalate, 25 parts, poly Ethylene wax, 0.8 parts, stearic acid, 4 parts, vulcanizing agent, 6.5 parts. After mixing the obtained nitrile rubber N220S and chlorinated polyethylene rubber, enter the internal mixer for mastication, masticate for 3-4 minutes, add magnesium oxide, anti-aging agent, stearic acid, stearic acid, polyethylene wax for Mix, then add cable powder, acetylene carbon black, high wear-resistant carbon black for mixing, then add dioctyl phthalate (added after filler and reinforcing agent) for mixi...

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Abstract

The invention discloses an insulating-layer semiconductive shielding material for an ethylene propylene rubber cable. The material is characterized by being prepared from, by weight, 60-70 parts of nitrile butadiene rubber, 30-40 parts of chlorinated polyethylene, 30-50 parts of cable powder, 50-70 parts of conductive carbon black A, 10-30 parts of conductive carbon black B, 5-10 parts of magnesium oxide, 2-4 parts of paraffin, 2-8 parts of anti-aging agents, 20-30 parts of dioctyl phthalate, 0.5-1 part of dispersants, 2-5 parts of stearic acid and 1-8 parts of vulcanizing agents. The insulating-layer semiconductive shielding material for the ethylene propylene rubber cable has the advantages of good heat oxygen aging resistance, ozone aging resistance, acid-base resistance and chemical resistance performance, excellent oil resistance performance, good removability and glue liquidity, low cost and the like.

Description

technical field [0001] The invention relates to a cable shielding material, which belongs to the technical field of chemical industry, in particular to an insulation layer semiconductive shielding material for ethylene-propylene rubber cables. Background technique [0002] The semi-conductive shielding material of the insulating layer is used in the structure of medium and high voltage mining cables, mainly to ease the concentration of electric field stress inside the cable, uniform the distribution of electric field stress on the surface of the insulating layer to prevent partial discharge, and improve the radial distribution of the electric field inside the cable to improve The electrical strength of the cable improves the service life of the cable. From the perspective of improving the electrical performance, safety and reliability of the long-term running ability of the cable, the modern cable structure and process require that the insulating shielding layer must be stri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L23/28C08L91/06C08K13/02C08K3/22C08K3/04C08K5/12C08K5/09H01B1/24
Inventor 李德强张云龙王义军高静童向坡
Owner 山东太平洋橡缆股份有限公司
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