Chemical crosslinking polyolefin insulating rubber for offshore oil gas engineering cable and manufacturing method

An insulating rubber and chemical cross-linking technology, applied in the field of cable insulating rubber, can solve the problems of inability to meet the high temperature operating environment requirements of offshore oil and gas engineering cables, inability to meet high temperature resistance, large current carrying capacity, high moisture erosion, unsuitable insulation materials, etc. Excellent anti-aging and non-discoloration, low smoke carbon monoxide generation, excellent heat resistance

Inactive Publication Date: 2013-03-13
JIANGSU YUANYANG DONGZE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent uses cross-linked polyethylene insulation, although the structure is simple and the cost is low, but it cannot meet the requirements of high temperature resistance, large current carrying capacity and multi-moisture erosion of offshore oil and gas engineering cables
[0004] The Chinese invention patent with the publication number CN101565527A discloses a 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin sheathing material for oil platforms. Can be used for cable sheathing, poor insulation performance, not suitable as insulating material
[0005] The Chinese invention patent with the publication number CN102617923A discloses a radiation-crosslinked low-smoke, halogen-free and highly flame-retardant polyolefin insulating material, whose heat aging resistance is only 135°C. The temperature is 90°C, which cannot meet the high-temperature operating environment requirements of offshore oil and gas engineering cables

Method used

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  • Chemical crosslinking polyolefin insulating rubber for offshore oil gas engineering cable and manufacturing method
  • Chemical crosslinking polyolefin insulating rubber for offshore oil gas engineering cable and manufacturing method
  • Chemical crosslinking polyolefin insulating rubber for offshore oil gas engineering cable and manufacturing method

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Experimental program
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Embodiment 1

[0021] The preparation steps of chemically cross-linked polyolefin insulating rubber for offshore oil and gas engineering cables are as follows: (1) Prepare raw materials according to the following components and weight content, ethylene / vinyl acetate copolymer: 12 parts; high-density polyethylene: 6 parts; ethylene - Methacrylic acid copolymer: 2 parts; Crosslinking agent dicumyl peroxide: 0.5 part; Antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate: 0.4 parts; antioxidant N,N'-di-β-naphthyl-p-phenylenediamine: 0.2 parts; lubricant stearic acid: 0.2 parts; flame retardant aluminum hydroxide: 25 parts; flame retardant red phosphorus: 0.6 parts; UV absorber 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole: 0.05 parts; The temperature rises to 130°C, add the above-mentioned ethylene / vinyl acetate copolymer, high-density polyethylene and ethylene-methacrylic acid copolymer in sequence, and plasticize and knead evenly, then add the antioxidant...

Embodiment 2

[0024] The preparation steps of chemically cross-linked polyolefin insulating rubber for offshore oil and gas engineering cables are as follows: (1) Prepare raw materials according to the following components and weight content, ethylene / vinyl acetate copolymer: 12 parts; high-density polyethylene: 6 parts; ethylene -Methacrylic acid copolymer: 2 parts; crosslinking agent dicumyl peroxide: 0.8 part; antioxidant beta-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate: 0.7 parts; antioxidant N,N'-di-β-naphthyl-p-phenylenediamine: 0.3 parts; lubricant stearic acid: 0.6 parts; flame retardant aluminum hydroxide: 28 parts; flame retardant red phosphorus: 0.8 parts; UV absorber 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole: 0.08 parts; The temperature rises to 140°C, add the above-mentioned ethylene / vinyl acetate copolymer, high-density polyethylene and ethylene-methacrylic acid copolymer in sequence, and plasticize and knead evenly, then add the antioxida...

Embodiment 3

[0027] The preparation steps of chemically cross-linked polyolefin insulating rubber for offshore oil and gas engineering cables are as follows: (1) Prepare raw materials according to the following components and weight content, ethylene / vinyl acetate copolymer: 12 parts; high-density polyethylene: 6 parts; ethylene -Methacrylic acid copolymer: 2 parts; crosslinking agent dicumyl peroxide: 1 part; antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate: 0.9 parts; antioxidant N,N'-di-β-naphthyl-p-phenylenediamine: 0.4 parts; lubricant stearic acid: 1 part; flame retardant aluminum hydroxide: 30 parts; flame retardant red phosphorus: 1 part; UV absorber 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole: 0.1 part; The temperature rises to 150°C, add the above-mentioned ethylene / vinyl acetate copolymer, high-density polyethylene and ethylene-methacrylic acid copolymer in sequence, and plasticize and knead evenly, then add the antioxidant β-(3,5-di ...

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PUM

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Abstract

The invention discloses chemical crosslinking polyolefin insulating rubber for an offshore oil gas engineering cable in the field of cables and a manufacturing method. The raw materials include 12 parts of ethylene/vinyl acetate copolymer, 6 parts of HDPE (high-density polyethylene), 2 parts of ethylene/methacrylic acid copolymer, 0.5-1 part of crosslinking agent DCP (dicumyl peroxide), 0.4-0.9 part of antioxidant 1076, 0.2-0.4 part of antioxidant DNP (N,N'-di-2-naphthyl-p-phenylenediamine), 0.2-1 part of stearic acid, 25-30 parts of aluminum hydroxide, 0.6-1 part of red phosphorus and 0.05-0.1 part of ultraviolet absorbent UV-326. The method comprises the following steps of: firstly adding the ethylene/vinyl acetate copolymer, the HDPE and the ethylene/methacrylic acid copolymer, and uniformly plastifying and mixing; adding the antioxidant, the ultraviolet adsorbent and flame retardant, and mixing uniformly before blanking; adding a lubricant and the crosslinking agent and mixing uniformly; and performing triangle packaging on the mixed glue, thinning for 4-6 times, and cutting and cooling for use. The insulating rubber has high heat resistance level and excellent ultraviolet resistance, seawater moisture erosion resistance and oil aging resistance.

Description

technical field [0001] The invention relates to a cable insulating rubber, in particular to a chemically cross-linked polyolefin insulating rubber for offshore oil and gas engineering cables. The invention also relates to a manufacturing method of chemically cross-linked polyolefin insulating rubber for offshore oil and gas engineering cables. Background technique [0002] With the exploitation of offshore oil and gas energy, there are more and more cables used in oil and gas engineering, and the performance requirements are getting higher and higher, especially the insulation and metal armor, which are the main components of the cable weight, need to be reduced to the greatest extent. The mechanical protection, the cables are suitable for the multi-moisture erosion and penetration of the oil and gas engineering environment, and the cables can operate safely for about 25 years. In the prior art, in order to reduce the weight of cables, almost all cables without inner sleeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06H01B3/44C08K13/02C08K5/14C08K5/134C08K5/18C08K5/09C08K3/22C08K3/02C08K5/3475C08J3/24B29C47/92B29C48/92
CPCB29C48/914B29C48/0022B29C48/022B29C48/08B29C48/09B29C48/92
Inventor 李永江陆云春
Owner JIANGSU YUANYANG DONGZE CABLE
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