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A kind of preparation method of multilayer nanoporous marine antifouling coating

A marine anti-fouling, nano-porous technology, applied in anti-fouling/underwater coatings, coatings, devices for coating liquid on surfaces, etc., to achieve the effects of inhibiting marine biofouling, reducing pollution, and preventing adsorption

Active Publication Date: 2022-02-18
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a kind of preparation method of multilayer nanoporous marine antifouling coating in order to overcome the problem that poisonous material type coating releases insoluble polymer particles (i.e. "white plastic" garbage) and antifouling agent in a large amount, and nanoparticle SiO 2 and Cu 2 O is constructed into a multilayer nanoporous superhydrophilic and self-cleaning surface structure. Due to the superhydrophilic and self-cleaning properties of the surface, a stable and dense hydration layer is formed on the surface, changing the coating from release to contact. , greatly reducing the seepage of insoluble polymer particles (that is, "white plastic" garbage) and antifouling agents, reducing the pollution of the marine ecological environment, and their synergistic effect can more effectively prevent marine biofouling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of the adhesion layer: adjust the pH value of the PDAC solution and the PSS solution to 4.0 with 1.0 M HCl, immerse the pretreated glass substrate in the PDAC solution for 10 min, take it out and rinse it with ultrapure water, and then immerse it in In the PSS solution for 10 min, repeated 4 times, PDAC and PSS were assembled onto the adhesion layer alternately, and 4 PDAC / PSS bilayers were prepared as the adhesion layer;

[0027] (2) Preparation of the first laminate: Cu 2 O nanoparticles were dissolved in water to make a 30 wt% suspension, and Cu was adjusted with 1.0 M HCl 2 The pH of the O suspension and PSS solution was 3.0, and the adhesion layer was first immersed in Cu 2 O suspension for 10 min, taken out and rinsed with ultrapure water, then immersed in PSS for 10 min, repeated 30 times, Cu 2 Alternate assembly of O and PSS onto the adhesion layer, depositing 30 Cu 2 O / PSS double layer as the first laminate (anti-fouling layer);

[0028] (3)...

Embodiment 2

[0031] (1) Preparation of the adhesion layer: adjust the pH value of the PDAC solution and the PSS solution to 4.0 with 1.0 M HCl, immerse the pretreated single crystal silicon substrate in the PDAC solution for 5 min, take it out and rinse it with ultrapure water, Then immersed in the PSS solution for 5 min, repeated 4 times, PDAC and PSS were alternately assembled on the adhesion layer, and 4 PDAC / PSS bilayers were prepared as the adhesion layer;

[0032] (2) Preparation of the first laminate: Cu 2 O nanoparticles were dissolved in water to make a 40 wt% suspension, and Cu was adjusted with 1.0 M HCl 2 The pH of the O suspension and PSS solution was 3.0, and the adhesion layer was first immersed in Cu 2 O suspension for 15 min, take it out and rinse it with ultrapure water, then immerse in PSS for 15 min, repeat 30 times, Cu 2 Alternate assembly of O and PSS onto the adhesion layer, depositing 30 Cu 2 O / PSS bilayer as the first laminate (anti-fouling layer) was calcined a...

Embodiment 3

[0036] (1) Preparation of adhesion layer: adjust the pH of PDAC solution and PSS solution to 4.0 with 1.0 M HCl, immerse the pretreated quartz substrate in PDAC solution for 20 min, take it out and rinse it with ultrapure water, and then immerse it in PSS In the solution for 20 min, repeated 4 times, PDAC and PSS were assembled onto the adhesive layer alternately, and 4 PDAC / PSS bilayers were prepared as the adhesive layer;

[0037] (2) Preparation of the first laminate: Cu 2 O nanoparticles were dissolved in water to make a 20 wt% suspension, and Cu was adjusted with 1.0 M HCl 2 The pH of the O suspension and PSS solution was 3.0, and the adhesion layer was first immersed in Cu 2 O suspension for 5 min, take it out and rinse with ultrapure water, then immerse in PSS for 5 min, repeat 30 times, Cu 2 Alternate assembly of O and PSS onto the adhesion layer, depositing 30 Cu 2 O / PSS double layer as the first laminate (anti-fouling layer);

[0038] (3) Preparation of the secon...

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Abstract

The invention relates to the preparation of anti-fouling coatings. Aiming at the problem of releasing insoluble polymers and anti-fouling agents from poison-type coatings, a method for preparing multi-layer nanoporous marine anti-fouling coatings is provided. Alternate immersion in cationic polymer and anionic polymer solutions to prepare cationic polymer / anionic polymer bilayers as an adhesion layer; then alternately immerse the adhesion layer in Cu 2 O suspensions, anionic polymers, deposition of Cu 2 O / anionic polymer bilayer as the first stack; the first stack is then alternately immersed in cationic polymer, SiO 2 In suspension, deposition of cationic polymer / SiO 2 A bilayer is used as the second stack; finally the multilayer is calcined to remove the cationic and anionic polymers. The antifouling coating that the present invention makes is in SiO 2 and Cu 2 Under the synergistic effect of O, it can more effectively prevent marine biofouling, and has the advantages of high efficiency, non-toxic material release, environmental friendliness, and self-cleaning.

Description

technical field [0001] The invention relates to a preparation method of an antifouling coating, in particular to a preparation method of a multilayer nanoporous marine antifouling coating. Background technique [0002] Structures in contact with seawater, such as ship bottoms, navigation buoys, sonar devices, and seawater cooling pipes, will adhere to various marine organisms, causing many problems for offshore facilities. The most economical, convenient and effective way to deal with the adhesion of marine organisms is to use antifouling coatings. Coatings are substances that form a thin film on the surface of an object in a flowing state and adhere to a solid surface after drying and curing to form a continuous covering film. Antifouling coatings are mainly toxic materials. During the dissolution and swelling process of the coating, the toxic active agent will be continuously released into the seawater, killing marine organisms on the coating surface. For example, the Chi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/00B05D7/24B05D5/04C09D5/16C09D5/14
CPCB05D5/00B05D7/24B05D5/04B05D7/58C09D5/16C09D5/14
Inventor 张海龙
Owner ZHEJIANG OCEAN UNIV
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