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Antifouling coating, and application thereof in antifouling of nuclear power station cooling seawater circulating pipeline

A technology of antifouling coatings and solvents, applied in antifouling/underwater coatings, rosin coatings, rubber derivative coatings, etc., can solve the problem of long-term antifouling coatings without nuclear power plant cooling seawater circulation pipelines

Active Publication Date: 2017-07-14
DONGGUAN G ONE NUCLEAR MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The cooling seawater circulation pipes of nuclear power plants are immersed in seawater all the year round and cannot move like ships, so marine biological pollution is easier and more serious. At present, there is no long-term antifouling coating specially used for cooling seawater circulation pipes of nuclear power plants, so the present invention is proposed

Method used

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  • Antifouling coating, and application thereof in antifouling of nuclear power station cooling seawater circulating pipeline
  • Antifouling coating, and application thereof in antifouling of nuclear power station cooling seawater circulating pipeline
  • Antifouling coating, and application thereof in antifouling of nuclear power station cooling seawater circulating pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 antifouling paint preparation

[0023] Table 1 Long-term antifouling paint ingredients

[0024]

[0025]

[0026] Please add the recipes for the two test paints.

[0027] Preparation:

[0028] The solvent is composed of xylene and modified rosin-based polyoxyethylene liquid. First, mix liquid rosin resin, chlorinated rubber resin liquid, iron red, nano-calcium carbonate, cuprous oxide, titanium dioxide and some solvents, disperse evenly, and then grind them in a grinder until the fineness is below 40 μm to become a pre-scouring pulp; Put the slurry in a clean stirring tank, add dispersing aids, defoamers, dust-proofing aids and the remaining solvent in sequence while stirring, mix evenly and stir until the fineness is below 40 μm; filter and pack.

Embodiment 2

[0029] Embodiment 2 product performance test

[0030] Performance tests were performed on the antifouling paints of the two formulations in Example 1, and a commercially available tin-free self-polishing antifouling paint was used as a comparison.

[0031] Refer to GB / T7789-2007 for the dynamic simulation of antifouling performance; refer to GB / T7790-2008 for the cathodic disbondment test of the coating in seawater; refer to GB / T5370-2007 for the shallow sea immersion of antifouling paint coatings; soak in tap water at 40°C 4 months coating. The cathodic stripping test after 4200h seawater immersion and 4200h seawater immersion of the antifouling coating is carried out according to the corresponding standard of Norwegian NORSOK M501.

[0032] Performance test results:

[0033] 1. Seawater soaking performance test

[0034] Soaked in a sea area for 62 months, see the results figure 1 , the far left is the conventional control product, it can be seen that the marine organisms...

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PUM

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Abstract

The invention discloses an antifouling coating, and an application thereof in the antifouling of a nuclear power station cooling seawater circulating pipeline. The antifouling coating comprises liquid rosin resin, cuprous oxide, a dispersing assistant, iron red, a chlorinated rubber Resin liquid, titanium dioxide, an antifoaming agent, nanometer calcium carbonate, a dustproof assistant and a solvent, and the solvent contains xylene. A specially designed coating carrying formula makes a carrier slowly and uniformly dissolved in seawater during long-term service and the carried coating released, the antifouling durability reaches 5 years, inspection and repairing of a coating film are not needed during the service period, and the coating is especially suitable for seawater circulating pipelines or low speed ships.

Description

technical field [0001] The invention relates to the technical field of paint chemical industry, in particular to an antifouling paint and its application in antifouling of nuclear power plant cooling seawater circulation pipelines. Background technique [0002] The main harm of marine organisms to marine structures is to accelerate the corrosion of steel, and its own gravity burden also reduces the speed of shipping, resulting in waste of dyes and excess carbon dioxide emissions. Antifouling coatings can effectively delay the adhesion of marine organisms. Organotin (TBT) has a broad-spectrum bactericidal effect, but the use of organic tin self-polishing antifouling coatings has side effects on the environment and has been banned. [0003] At present, there are three main types of self-polishing antifouling coatings that do not contain organic tin: antifouling coatings based on copper acrylate polymers, zinc acrylate polymers, and silyl acrylate polymers. The antifouling peri...

Claims

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Application Information

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IPC IPC(8): C09D193/04C09D115/02C09D5/16C09D7/00C09D7/12
CPCC08K2201/011C08L2205/03C09D5/1656C09D5/1687C09D7/20C09D193/04C08L15/02C08L71/02C08K2003/2248C08K2003/2241C08K2003/265C08K2003/2272
Inventor 叶海军梁志
Owner DONGGUAN G ONE NUCLEAR MATERIALS CO LTD
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