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PE sheath material for submarine cable and preparation method thereof

A technology for submarine cables and sheathing materials, which is applied in the field of PE sheathing materials for submarine cables and their preparation, can solve the problems of shortened service life, performance degradation, poor performance of seawater corrosion resistance and microbial corrosion resistance, etc.

Active Publication Date: 2015-08-12
青岛宏信塑胶造粒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame-retardant cable material has poor seawater corrosion resistance and microbial corrosion resistance, and is easily corroded by seawater, resulting in serious performance degradation and shortening its service life.

Method used

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  • PE sheath material for submarine cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The PE sheath material for submarine cables consists of 100 parts by weight of HDPE, 9 parts of modified hemp fiber, 6 parts of modified magnesium oxide, 0.3 part of antioxidant CA, 9.4 parts of EVA, 2.5 parts of carbon black, calcium carbonate 3.8 parts, 0.1 part of calcium stearate, 0.1 part of titanate coupling agent.

[0028] The steps of its preparation method are as follows:

[0029] (1) After pulverizing the hemp fiber with a pulverizer, add a sodium hydroxide solution with a concentration of 2%, the solid-to-liquid ratio of the hemp fiber and the sodium hydroxide solution is 1:30, stir for 3 hours at 70 ° C, and use distilled water after discharging Wash until neutral, dry at 90°C for 2 hours to obtain alkalized fiber;

[0030] (2) After formic acid is dissolved in water and stirred evenly, a formic acid solution with a pH value of 4 is obtained, and the coupling agent A174 is added in the formic acid solution and stirred for 40 minutes to obtain a fiber modifi...

Embodiment 2

[0034] The PE sheath material for submarine cables consists of: 100 parts by weight of HDPE, 12 parts of modified hemp fiber, 9.5 parts of modified magnesium oxide, 0.2 part of antioxidant CA, 9 parts of EVA, 2.1 parts of carbon black, calcium carbonate 3.9 parts, 0.1 part of calcium stearate, 0.1 part of titanate coupling agent.

[0035] Its preparation method is the same as Example 1.

Embodiment 3

[0037] The PE sheath material for submarine cables consists of 100 parts by weight of HDPE, 11 parts of modified hemp fiber, 8 parts of modified magnesium oxide, 0.3 parts of antioxidant CA, 10 parts of EVA, 2.4 parts of carbon black, calcium carbonate 3.6 parts, 0.2 parts of calcium stearate, 0.1 parts of titanate coupling agent.

[0038] Its preparation method is the same as Example 1.

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Abstract

The invention provides a PE sheath material for a submarine cable. The PE sheath material comprises, by weight, 100 parts of PE, 8-12 parts of modified hemp fibers, 6-10 parts of modified magnesium oxide, 0.2-0.3 parts of an anti-oxidant, 9-10 parts of EVA, 2-3 parts of carbon black, 3-4 parts of calcium carbonate, 0.1-0.2 parts of a stabilizing agent and 0.1 parts of a coupling agent. The invention also provides a preparation method of the PE sheath material. The PE sheath material for a submarine cable has good sea water corrosion resistance and microbiological corrosion resistance, can effectively reduce corrosion damage and has a long service life.

Description

Technical field: [0001] The invention relates to a PE sheath material, in particular to a PE sheath material for submarine cables and a preparation method thereof. Background technique: [0002] Submarine cables are cables laid on the seabed and underwater in rivers. They are divided into two categories: submarine communication cables and submarine power cables. There is a large amount of seawater in the use environment of submarine cables. Seawater itself is a highly corrosive electrolyte solution containing a large amount of salt, and there are a large number of microorganisms in seawater. Therefore, seawater corrosion and microbial corrosion in seawater have a great impact on polymer The manufactured submarine cable sheath forms double corrosion, shortens the service life of the sheath, and causes a great safety hazard to the cables in the sheath. At present, ordinary cable sheathing materials are mainly made of polyethylene, and its resistance to seawater corrosion and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L97/02C08L23/08C08K13/06C08K9/02C08K9/04C08K3/22C08K3/26C08K3/04
CPCC08L23/06C08L2203/202C08L2205/03C08L2207/062C08L97/02C08L23/0853C08K13/06C08K9/02C08K9/04C08K2003/222C08K2003/265C08K3/04
Inventor 邬月良
Owner 青岛宏信塑胶造粒有限公司
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