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Environment-friendly marine antifouling coating and preparation method thereof

An environmentally friendly, marine antifouling technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc. The effect of preventing biofilm formation

Inactive Publication Date: 2021-06-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Incorporating natural antifouling agents (such as algae, coral, pepper extracts) into polymers to prepare environmentally friendly antifouling coatings is a development direction in recent years, but the effect is not particularly good

Method used

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  • Environment-friendly marine antifouling coating and preparation method thereof
  • Environment-friendly marine antifouling coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] like figure 1 As shown, in this embodiment, the environment-friendly marine antifouling coating uses silicone resin as a matrix, and coffee particles above 150 mesh are dispersed in the matrix. The silicone resin is a two-component silicone resin. The example is PDMS, and the mass of coffee particles is 4% to 5% of the total mass of the coating.

[0020] (1) Preparation of coffee dispersion

[0021] Grind the pure coffee with a ceramic mortar for 20 minutes, and then screen it with a 150-mesh metal sample sieve to remove large coffee particles. Afterwards, the coffee was dissolved in absolute ethanol (mass ratio 1:4), stirred with a mechanical stirrer for 10 minutes, then placed in an ultrasonic cleaner and vibrated for 30 minutes to obtain a coffee dispersion.

[0022] (2) Preparation of silicone resin dispersion

[0023] Pour component A of the silicone resin into tetrahydrofuran, then keep stirring at a water bath temperature of 55°C, and measure the weight every ...

Embodiment 2

[0027] The difference between this example and Example 1 is that the silicone resin added is RTV-2 silicone rubber, and the mass ratio of AB components is A:B=100:1.5.

Embodiment 3

[0029] The difference between embodiment 3 and embodiment 4 and embodiment 1 is that adding 20 grams of coffee dispersion in step (3) can prepare the environment-friendly marine antifouling coating containing 10wt% coarse coffee.

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Abstract

The invention discloses an environment-friendly marine antifouling coating and a preparation method thereof, the coating takes organic silicon resin (such as Dow Corning 184PDMS, RTV-2 silicone rubber) as a substrate material, and coffee (such as Nestu instant pure coffee and Espresso instant pure coffee) is doped into the organic silicon resin for curing and forming. According to the invention, chlorella is used as a fouling organism to carry out an anti-fouling performance experiment on the coating, and the experiment result is as shown in Figure 2. The results show that compared with pure PDMS or RTV-2 silicone rubber, the coating doped with coffee shows excellent antifouling performance, and the antifouling effect of the coating containing 10wt% of coffee is superior to that of the coating containing 5wt% of coffee. Due to the fact that the initial stage of marine biofouling is formation of a biological membrane, and algae is one of important participants for formation of the biological membrane, intervention is carried out in the initial stage of biological fouling, and follow-up large-scale biological fouling can be prevented.

Description

technical field [0001] The invention belongs to the technical field of polymer coating materials. Background technique [0002] The phenomenon that bacteria, algae, crustaceans and other organisms in the ocean adhere to the underwater surface is called marine biofouling. Marine biofouling will increase the navigation resistance of the ship and accelerate the surface corrosion of the hull, which not only brings about an increase in fuel consumption, but also brings huge costs to the maintenance of the hull. The U.S. Navy reportedly spends $1 billion a year tackling biofouling. For the global marine industry, biofouling costs more than $15 billion annually. Traditional toxic antifouling coatings (such as heavy metal coatings, tributyltin coatings) are gradually banned by countries all over the world because of their negative impact on the environment. Therefore, there is a very urgent need to develop green and efficient non-toxic antifouling coatings. Incorporating natural...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/16
CPCC09D5/1625C09D183/04C08K5/0008
Inventor 田丽梅靳会超王建福殷玥商延赓赵杰孙霁宇
Owner JILIN UNIV
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