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Rare-earth-based complex environment-friendly marine antifouling paint and preparation method thereof

A marine antifouling and complex technology, applied in antifouling/underwater coatings, rosin coatings, coatings, etc., to achieve the effects of stable antibacterial performance, environmental protection and antifouling, and lasting antibacterial efficacy

Pending Publication Date: 2022-07-29
XIAMEN INST OF RARE EARTH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above existing technologies all use rare earths as antibacterial agents, they all use simple physical addition methods to compound rare earth inorganic salts with other antibacterial agents. Although they have certain antifouling effects, they still have relatively large limitations.

Method used

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  • Rare-earth-based complex environment-friendly marine antifouling paint and preparation method thereof
  • Rare-earth-based complex environment-friendly marine antifouling paint and preparation method thereof
  • Rare-earth-based complex environment-friendly marine antifouling paint and preparation method thereof

Examples

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Effect test

preparation example Construction

[0038] The preparation method of the lanthanum ternary complex in the following examples is as follows:

[0039] (1) Preparation of lanthanum nitrate solution: Weigh 20 g of lanthanum nitrate, add it into 180 g of water, stir to dissolve, and set aside.

[0040] (2) Preparation of sodium pyrithione solution: weigh 50 g of sodium pyridinethione, add it to 150 g of absolute ethanol, stir to dissolve, and set aside for later use.

[0041] (3) Preparation of α-tryptophan solution: weigh 25 g of α-tryptophan, add 175 g of deionized water, stir to dissolve, and set aside.

[0042] (4) Under stirring conditions, the above-mentioned sodium pyrithione solution was added dropwise to the above-mentioned lanthanum nitrate solution, the dropwise addition time was about 10 minutes, and the stirring was continued for 20 minutes after the dropwise addition was completed.

[0043] (5) Under stirring conditions, the above-mentioned α-tryptophan solution was added dropwise to the material obtai...

Embodiment 1

[0053] (1) mix the zinc acrylate self-polishing resin, natural rosin, xylene and n-butanol and disperse for 50min at a speed of 800r / min to obtain a pre-dispersion;

[0054] (2) adding lanthanum ternary complex, zinc pyrithione, primary zinc oxide and yellow organic color paste to the above-mentioned pre-dispersion liquid, and dispersing at a rate of 1200r / min for 20min;

[0055] (3) The material obtained in step (2) is placed in a basket sand mill and sanded to a fineness of 85um, then a thixotropic agent organobentonite is added, dispersed at a speed of 1000r / min until the viscosity reaches 8000cp, and it is cooled. .

[0056] The raw material proportioning ratio of the present embodiment is shown in the following table 1:

[0057] Table 1

[0058] serial number Material name Mass percentage / % 1 Acrylic Zinc Self Polishing Resin 26 2 natural rosin 7 3 Xylene: n-butanol (mass ratio 1:1) 25 4 Lanthanum ternary complex 24 5 Zinc p...

Embodiment 2

[0063] (1) mix the zinc acrylate self-polishing resin, natural rosin, xylene, and 200# solvent oil and disperse at a speed of 1200r / min for 30min to obtain a pre-dispersion;

[0064] (2) adding lanthanum ternary complex, Sea-nine 211, zinc oxide, primary zinc oxide and gray organic color paste to the above-mentioned pre-dispersion liquid, and dispersing at a rate of 1000r / min for 30min;

[0065] (3) the material obtained in step (2) is placed in a basket sand mill and sanded to a fineness of 75um, then a thixotropic agent polyamide wax is added, dispersed at a speed of 1000r / min until the viscosity reaches 6500cp, and the cooling is to make.

[0066] The raw material proportioning ratio of the present embodiment is shown in the following table 3:

[0067] table 3

[0068] serial number Material name Mass percentage / % 1 Acrylic Zinc Self Polishing Resin 23 2 natural rosin 6 3 Xylene: 200# solvent oil (mass ratio 1:1) 17 4 Lanthanum ter...

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Abstract

The invention discloses a rare-earth-based complex environment-friendly marine antifouling coating and a preparation method thereof. The rare-earth-based complex environment-friendly marine antifouling coating is prepared from a lanthanum ternary complex, self-polishing resin, a synergistic antifouling agent, zinc oxide, organic color paste, an organic solvent, natural rosin and a thixotropic agent. A lanthanum ternary complex is selected as an antifouling agent, and the antifouling agent has a rare earth and pyridine heterocyclic ring inorganic-organic dual antifouling mechanism; meanwhile, by utilizing the biocompatibility characteristic of tryptophan, the permeability of the complex to cells is improved, the repellency of bacteria to the antifouling agent is reduced, rapid permeation is realized, and the binding capacity of active groups and internal structures of the bacteria is enhanced, so that the metabolism of the bacteria is effectively inhibited; the antibacterial agent has the advantages of broad antibacterial spectrum, strong antibacterial ability, lasting antibacterial effect, stable antibacterial performance, low ecological safety risk and the like.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling paints, and in particular relates to a rare earth-based complex environment-friendly marine antifouling paint and a preparation method thereof. Background technique [0002] Marine fouling refers to the growth of marine organisms on offshore facilities and equipment, causing damage to facilities and equipment or increasing additional fuel consumption, resulting in huge economic losses and energy waste. Therefore, people use various technical means to prevent the attachment and growth of marine organisms. At present, the most economical and effective prevention and control method is to apply a layer of antifouling paint on the facilities and equipment, and release the toxic antifouling agent through the antifouling paint to achieve the purpose of preventing the growth of marine organisms. At present, common antifouling coatings are mainly composed of cuprous oxide, zinc oxide and organi...

Claims

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Application Information

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IPC IPC(8): C09D133/02C09D193/04C09D5/16C09D7/61
CPCC09D133/02C09D5/1625C09D5/1662C09D5/1687C08K2003/2296C08L93/04C08K5/0091C08K3/22
Inventor 王胜龙宋立军吴银财林凤龙
Owner XIAMEN INST OF RARE EARTH MATERIALS
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