Silicate-modified polyetheramine polyurethane antifouling coating and application thereof

A technology of polyetheramine polyurethane and anti-fouling coatings, applied in polyurea/polyurethane coatings, anti-fouling/underwater coatings, anti-corrosion coatings, etc., can solve the problems of increased power and fuel consumption, increased fuel consumption, and short service life , to achieve the effect of preventing adhesion

Inactive Publication Date: 2019-11-12
四川暄洋新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to research, there are as many as 2,000 kinds of common marine fouling organisms, the most common being algae, hydra, barnacles, oysters, etc. The adhesion of marine organisms will lead to an increase in the weight of the hull and sailing friction, and an increase in power and fuel consumption. hinder the development of the marine economy
According to statistics, the fuel consumption caused by marine fouling can increase by up to 40%, and the total cost of the voyage can increase by up to 77%.
Organotin (TBT) has been widely used since the 1970s. However, organotin can disrupt the endocrine of molluscs and induce sexual distortion, resulting in population degradation and a sharp decline in the number, causing huge disasters to the marine ecological environment, and may enter the food chain. , causing harm to human life, the International Maritime Convention Organization (IMO) stipulates that the use of organotin antifouling paints will be completely banned from 2008
[0004] The existing antifouling coatings are mainly composed of antifouling agents and hydrolyzable resins, with outstanding shortcomings: 1. No anti-corrosion performance, and need to be coated with solvent-based anti-corrosion primers; 2. Add various antifouling agents, There is a certain degree of pollution to the environment. In severe cases, it will also disturb the endocrine of molluscs, induce sexual distortion, cause population degradation and sharp decline in numbers, cause huge disasters to the marine ecological environment, and may enter the food chain, affecting human life. Safety hazards; 3. The use time is short, generally no more than 5 years
[0005] The other existing marine silicate antifouling has problems such as short antifouling time and insufficient physical strength of the coating.

Method used

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  • Silicate-modified polyetheramine polyurethane antifouling coating and application thereof
  • Silicate-modified polyetheramine polyurethane antifouling coating and application thereof
  • Silicate-modified polyetheramine polyurethane antifouling coating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A: Take 5.0 parts of water-soluble polyetheramine, 10 parts of potassium silicate, 10 parts of water, 60 parts of pigments: silicon oxide, red iron oxide, talcum powder, barium sulfate, sericite 1 part, 4 parts, 20 parts, 20 parts, 15 parts, after mixing, high-speed dispersion at 2000rpm for 150min, and sand grinding to a fineness of 5μm.

[0025] B: 13 parts of Wanhua water-based curing agent 268, mixed with 1 part of calcined magnesium oxide, 2 parts of zinc oxide, and 10 parts of aluminum oxide, then dispersed at 2000 rpm for 150 minutes at high speed, and sand-milled to a fineness of 6 μm.

[0026] A: B = 3:1 (weight ratio) and mix well.

Embodiment 2

[0028] A: Take 6.0 parts of water-soluble polyetheramine, 11 parts of alkaline silica sol, 5 parts of water, 60 parts of pigments: 2 parts, 4 parts, 10 parts, 30 parts of each of silicon oxide, iron oxide red, talcum powder, and sericite, After mixing, disperse at a high speed of 2600 rpm for 120 minutes, and grind to a fineness of 13 μm.

[0029] B: 16 parts of Wanhua water-based curing agent 270, mixed with 2 parts of calcined magnesium oxide, 3 parts of zinc oxide, and 12 parts of aluminum oxide, then dispersed at 2600 rpm for 120 minutes at high speed, and sand-milled to a fineness of 16 μm.

[0030] A: B=3.2:1 (weight ratio) and mix well.

Embodiment 3

[0032] A: Take 7.0 water-soluble polyetheramine, 12 parts of sodium silicate, 15 parts of water, 63 parts of pigments: silicon oxide, red iron oxide, talcum powder, barium sulfate, sericite, 3 parts, 5 parts, 20 parts, 20 parts Parts, 15 parts, after mixing, high-speed dispersion at 3000rpm for 100min, and sand milling to a fineness of 9μm.

[0033] B: 15 parts of Wanhua water-based curing agent 278, mixed with 1 part of calcined magnesium oxide and 10 parts of aluminum oxide, dispersed at 3000 rpm for 100 minutes at high speed, and sand-milled to a fineness of 11 μm.

[0034] A: B=3.3:1 (weight ratio) and mix well.

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PUM

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Abstract

The invention provides a silicate-modified polyetheramine polyurethane antifouling coating. The coating mainly comprises an A component and a B component; the A component comprises the following materials: 5%-45% of a water-soluble polyetheramine, 10%-50% of a silicon-containing compound, 45%-85% of a pigment, and the balance of water, and the A component is dispersed at a high speed of 1500 rpm to 5000 rpm for 30-200 min and is subjected to sanding to fineness of 2-45 [mu]m; and the B component comprises the following materials: 5%-75% of isocyanate and 25%-95% of a calcined oxide, and the Bcomponent is dispersed at a high speed of 1500 rpm to 5000 rpm for 30-200 min and is subjected to sanding to a fineness of 2-45 [mu]m. According to the silicate-modified polyetheramine polyurethane antifouling coating provided by the invention, alkalinity of the soluble silicate antifouling coating is utilized to create a stable and long-lasting alkaline environment to prevent adhesion of marine fouling organisms, so that the antifouling performance is realized.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling, and in particular relates to a polyetheramine polyurethane antifouling coating modified by silicate and its application. Background technique [0002] Marine biofouling is ubiquitous in the marine environment and is one of the most important issues facing the shipping industry. According to research, there are as many as 2,000 kinds of common marine fouling organisms, the most common being algae, hydra, barnacles, oysters, etc. The adhesion of marine organisms will lead to an increase in the weight of the hull and sailing friction, and an increase in power and fuel consumption. hinder the development of marine economy. According to statistics, the fuel consumption caused by marine fouling can increase by up to 40%, while the total cost of the voyage can increase by up to 77%. Organotin (TBT) has been widely used since the 1970s. However, organotin can disrupt the endocrine of mollusc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/16C09D7/61C09D5/08C08G18/50
CPCC08G18/5024C08K2003/222C08K2003/2227C08K2003/2296C09D5/08C09D5/1687C09D175/08C08K3/34C08K3/36C08K3/22
Inventor 汪培庆黄承暄
Owner 四川暄洋新材料科技有限公司
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