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High-quality middle-high pressure insulated ethylene propylene rubber

An ethylene-propylene insulation, medium and high voltage technology, applied in the chemical field, can solve the problems of insufficient softness of the sheath rubber at low temperature, etc., and achieve the effects of mass production with stable quality, good mechanical and physical properties, and excellent electrical properties

Inactive Publication Date: 2015-03-18
SHANGHAI MINING CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-quality medium and high voltage ethylene-propylene insulating rubber, which solves the technical problem of insufficient low-temperature softness of cable sheath rubber in the prior art

Method used

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Embodiment 1

[0021] The present invention is a high-quality medium and high voltage ethylene-propylene insulating rubber, which is composed of EPDM rubber, zinc oxide, eclectic acid, paraffin, paraffin oil, calcined clay, dicumyl peroxide, and triallyl isocyanuric acid acid ester, 2,2,2,4-trimethyl-1,2-hydroquinoline polymer, 2-mercaptobenzimidazole, light calcium carbonate, the EPDM rubber in the The mass percentage in the rubber is 40%, the mass percentage of zinc oxide in the rubber is 1.5-2.5%, the mass percentage of hard gum acid in the rubber is 0.2-0.5%, and the paraffin wax is in the rubber. The mass percent in the above-mentioned rubber is 3.5-4.5%, the mass percent of paraffin oil in the described rubber is 2-3%, the mass percent of calcined clay in the described rubber is 30-40%, and diperoxide The mass percent of cumene in the described rubber is 1.0-1.5%, and the mass percent of triallyl isocyanurate in the described rubber is 0.5-0.7%, 2,2,2,4 - The mass percent of trimethyl...

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PUM

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Abstract

The invention discloses a high-quality middle-high pressure insulated ethylene propylene rubber, comprising ethylene-propylene diene copolymer rubber, zinc oxide, ebonite acid, paraffin, paroline, calcined clay, dicumyl peroxide, triallyl isocyanurate, 2,2,2,4-trimethyl-1,2-hydro-quinoline polymer, 2-thiol benzimidazole and light calcium carbonate. The invention also provides a preparation method of the high-quality middle-high pressure insulated ethylene propylene rubber. Ethylene propylene rubber is adopted as a basic material; surface-treated calcined clay is selected to fill; a peroxide vulcanization system is adopted; and the high-quality middle-high pressure insulated ethylene propylene rubber has characteristics of excellent electric property, good processing process and the like, also has good water resistance and low-temperature flexibility, and is suitable for pavement on a mine.

Description

Technical field: [0001] The invention relates to the field of chemistry, in particular to a rubber for making cable sheaths, in particular to a high-quality medium-high voltage ethylene-propylene insulating rubber. Background technique: [0002] Elasticity is an important property of rubber as an engineering material. At very low temperature, due to the freezing of rubber molecular chains, it loses the unique elasticity of rubber, becomes hard and brittle, and loses its performance. In the prior art, when the cable sheath rubber is used at -60°C, it cannot withstand multiple bendings and cracks, so it cannot meet the requirements of cold-resistant cables in open-pit mines. In the prior art, cross-linked polyethylene (XLPE) insulating material is widely used for the sheath rubber of cables, and its low-temperature flexibility is insufficient. Invention content: [0003] The purpose of the present invention is to provide a high-quality medium-high voltage ethylene-propylen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/34C08K3/26C08K3/22C08K5/14C08K5/3492
CPCC08L23/16C08L2205/025C08L2205/03C08L2312/00C08L91/06C08K13/06C08K9/00C08K3/34C08K2003/265C08K2003/2296C08K5/14C08K5/34924
Inventor 余望野何文芳虞洪济
Owner SHANGHAI MINING CABLE FACTORY
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