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Self-polishing antifouling anticorrosive coating for submarine cables

A technology for submarine cables and anti-corrosion coatings, applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., can solve problems such as short service life, inability to protect submarine cables, poor adhesion performance, etc., and achieve anti-shear rate , Remarkable drag reduction effect, good retarding performance

Inactive Publication Date: 2019-12-27
孙振龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current anti-corrosion and anti-fouling coatings have poor adhesion due to the accumulation of stains, avoiding frequent peeling or loosening of the outer coating layer, and short service life, which cannot form a safe protection for submarine cables.

Method used

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  • Self-polishing antifouling anticorrosive coating for submarine cables
  • Self-polishing antifouling anticorrosive coating for submarine cables

Examples

Experimental program
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Effect test

Embodiment 1

[0018] A self-polishing submarine cable anti-fouling and anti-corrosion coating, the preparation method thereof comprises the following steps: 1. Weigh each raw material according to the proportion, transfer vinyl ester resin preheated to 60°C into a reaction kettle, and raise the temperature of the reaction kettle When the temperature reaches about 90°C, add azobisisobutyronitrile and keep the temperature constant for 20 minutes; raise the temperature of the reactor to 120°C, and drop a certain amount of 2-acrylamide-2-methylpropanesulfonic acid slowly within 1 hour with a dropping funnel Aqueous solution, N-acryloylmorpholine, and acetic acid aqueous solution, after adding, add mercaptoethanol under nitrogen atmosphere, keep the temperature for 30 minutes, stop the reaction, and obtain modified vinyl ester resin; 2. Mix phthalic anhydride and dicyclopentan Put the diene into another reaction kettle, raise the temperature, stir, blow nitrogen, and drop pure water at 140°C for ...

Embodiment 2

[0025]A self-polishing submarine cable anti-fouling and anti-corrosion coating. The preparation method comprises the following steps: 1. Weigh each raw material according to the proportion, transfer vinyl ester resin preheated to 50-60°C into a reaction kettle, and react When the temperature of the kettle rises to about 90°C, add azobisisobutyronitrile and keep the temperature constant for 20 minutes; raise the temperature of the reactor to 120°C, and slowly add a certain amount of 2-acrylamide-2-methylpropane dropwise within 1 hour with a dropping funnel Sulfonic acid aqueous solution, N-acryloylmorpholine, and acetic acid aqueous solution, after adding, add mercaptoethanol under nitrogen atmosphere, then keep the temperature for 30 minutes, stop the reaction, and obtain modified vinyl ester resin; 2. Mix phthalic anhydride and Add dicyclopentadiene into another reaction kettle, heat up, stir, blow nitrogen, add pure water dropwise at 135°C for about 30-60 minutes, and keep wa...

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Abstract

The invention discloses a preparation method of self-polishing antifouling anticorrosive coating for submarine cables. The coating is prepared from the following raw materials: dicyclopentadiene, vinyl ester resin, 2-acrylamido-2-methylpropane sulfonic acid, 3-(trimethoxysilyl)propyl-2-methyl-2-acrylate, ammonia water, glycidyl methacrylate, ammonium acryloyldimethyltaurate, N-acryloylmorpholine,a sodium nitrate solution, isobornyl acrylate, purified water, azodiisobutyronitrile, butanediol, antimonous oxide, indium tin oxide, mixed amide, isooctyl glycidyl ether, alkenyl succinate, zinc dialkyl dithiophosphate and cerous nitrate. The self-polishing antifouling anticorrosive coating for the submarine cable disclosed by the invention has certain water permeability; the coating has good seawater impact resistance, does not blister or fall off when being immersed in water for a long time, works by virtue of the principle of low surface energy, has good interlayer adhesion, can resist rust and corrosion, has good seawater impact resistance, and does not blister or fall off when being immersed in water for a long time.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a self-polishing submarine cable antifouling and anticorrosion coating. Background technique [0002] As we all know, seawater contains a lot of salt. In the open ocean, if considered by weight, the salt content in seawater accounts for 33%~39%; Depending on evaporation, the salinity can vary greatly. The salt contained in seawater is extremely harmful to the metal layer of submarine cables, and the greater the salt content, the stronger the corrosion effect of seawater. Therefore, when designing submarine power cables, attention must be paid to the corrosion of cables by seawater. At present, the design life of submarine cables is generally not less than 30 years. However, in this special environment, whether the use of anti-corrosion coatings can protect the normal operation of submarine cables is the key. In order to effectively protect the metal sheath (including steel wi...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D145/00C09D5/16C09D5/08C09D7/61
CPCC08L2203/202C09D5/08C09D5/1668C09D5/1687C09D151/08C08L45/00C08K13/02C08K3/22C08K3/2279C08K3/34
Inventor 孙振龙
Owner 孙振龙
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