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Modified EPDM composition used in submerged pump cable rubber insulation

A technology of rubber insulation and rubber composition, applied in the directions of rubber insulators, insulated conductors, insulated cables, etc., can solve the problems of poor electrical performance and poor oil resistance, and achieve the effects of easy cross-linking, improved mechanical strength, and high electrical performance.

Inactive Publication Date: 2014-01-15
SHANGHAI QIFAN CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional EPDM rubber insulation has the problem of contradictory oil resistance and electrical properties. The traditional EPDM formula has excellent electrical properties but poor oil resistance. If the oil resistance of EPDM rubber is simply improved, it will The electrical performance is poor and cannot meet the standard requirements, and the EPDM insulation produced by the traditional formula is generally used on the cables of submersible pumps at 150°C and below
The submersible pump cable requires that the insulation not only have high flexibility, but also have excellent electrical properties, oil resistance and high temperature resistance. Therefore, the electrical insulation performance and oil resistance of EPDM rubber become a contradiction, and it is impossible to balance them.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 100 parts of ethylene propylene rubber and 15 parts of polyethylene powder were banburyed. Add nano-scale zinc oxide, stearic acid, anti-hydrophobic agent red lead powder (paint grade), paraffin oil 2280, alkane coupling agent A-172, silane-modified calcined clay, and peroxide vulcanizing agent for mixing. After mixing, the mixed rubber is moved to the open mill for further processing. After the rubber is milled, filter the rubber. After filtering the glue, it is moved to the forming machine for rolling and slicing.

Embodiment 2

[0034] Mix 100 parts of ethylene-propylene rubber with 11 parts of polyethylene powder, and put in nano-sized zinc oxide, stearic acid, water-repellent red lead powder (paint grade), paraffin oil 2280, and alkane coupling agent A-172 , silane-modified calcined clay, and peroxide vulcanizing agent for mixing. After mixing, move the mixed rubber to the open mill for further processing. After the rubber is milled, filter the rubber. After filtering the glue, it is moved to the forming machine for rolling and slicing.

Embodiment 3

[0036] Mix 100 parts of ethylene-propylene rubber with 10 parts of polyethylene powder, and put in nano-sized zinc oxide, stearic acid, water-repellent red lead powder (paint grade), paraffin oil 2280, and alkane coupling agent A-172 , silane-modified calcined clay, and peroxide vulcanizing agent for mixing. After mixing, move the mixed rubber to the open mill for further processing. After the rubber is milled, filter the rubber. After filtering the glue, it is moved to the forming machine for rolling and slicing.

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PUM

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Abstract

The invention relates to a rubber composition, and especially relates to an ethylene-propylene rubber composition used in submerged pump cable rubber insulation. The composition is characterized by comprising, by weight, 100 parts of EPDM, 10-15 parts of polyethylene powder, 5-10 parts of nano-scale zinc oxide, 1-2 parts of stearic acid, 1-1.5 parts of water repellent red lead powder (paint grade), 10-18 parts of paraffin oil 2280, 1.5-2 parts of a silane coupling agent A-172, 100-120 parts of silane-modified calcined clay, and 3.5-4 parts of a peroxide vulcanizing agent. EPDM and polyethylene powder in the above proportion are subjected to open milling; the other materials are added, and the mixture is subjected to mixing and open milling; and gstraining, tabletting, and slicing are carried out, such that the EPDM composition is obtained. With the EPDM composition, various performance requirements of export submerged pump cable can be completely satisfied.

Description

technical field [0001] The invention relates to a rubber composition, in particular to an ethylene-propylene rubber composition used for rubber insulation of cables of submersible oil pumps. Background technique [0002] Traditional EPDM rubber insulation has the problem of contradictory oil resistance and electrical properties. The traditional EPDM formula has excellent electrical properties but poor oil resistance. If the oil resistance of EPDM rubber is simply improved, it will As a result, the electrical performance is poor and cannot meet the standard requirements, and the EPDM insulation produced by the traditional formula is generally used on the cables of submersible pumps at 150°C and below. The submersible pump cable requires that the insulation not only have high flexibility but also have excellent electrical properties, oil resistance and high temperature resistance. Therefore, the electrical insulation performance and oil resistance of EPDM rubber become a contr...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/06C08L91/06C08K13/06C08K9/06C08K3/34C08K3/22C08K5/09H01B3/44H01B7/28
CPCC08L23/16C08L2201/08C08L2203/202C08L2205/03C08L2207/32H01B3/28C08L23/06C08L91/06C08K13/06C08K9/06C08K3/346C08K2003/2296C08K5/09
Inventor 王国福陈志远高文起高俊威丁永国孙学鹏
Owner SHANGHAI QIFAN CABLE CO LTD
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