Bionic fluorescent antifouling erosion-resistant coating with multi-layer structure and preparation method thereof

Abstract

The invention discloses a bionic fluorescent antifouling coating with a multilayer structure and a preparation method thereof, and belongs to the technical field of bionic materials, the bionic fluorescent antifouling coating with the multilayer structure has four layers of structures, namely a single graphene layer, a transparent polyurethane layer, a PDMS / polyurethane / fluorescent powder composite layer and a PDMS / polyurethane composite layer in sequence from top to bottom. Fluorescence generated by the PDMS / polyurethane / fluorescent powder composite layer has an adhesion inhibition effect onalgae, meanwhile, the graphene layer on the surface has a killing effect on bacteria, through the synergistic effect of the PDMS / polyurethane / fluorescent powder composite layer and the graphene layer,formation of a biological membrane can be effectively inhibited, then adhesion and settlement of marine organisms are inhibited, and the antifouling effect is achieved. The Young modulus of the multilayer structure coating is gradually increased from the bottom layer to the surface layer. Due to the gradient change of the Young modulus, erosion of water flow / impurities to the coating can be reduced. A traditional antifouling or erosion-resistant coating is usually single in function, and the antifouling coating has antifouling and erosion-resistant capacity at the same time.

Description

technical field [0001] The invention belongs to the technical field of bionic materials. Background technique [0002] In the field of marine industry, the adhesion of bacteria, algae, shellfish and other organisms on the underwater surface will cause marine biofouling, which not only aggravates the corrosion of equipment in the ocean, but also increases the resistance of water flow during navigation, sometimes the resistance It will increase by 60%, which will bring the speed of the hull to drop, which will cause the consumption of fuel during navigation, and the increase can reach 40%. Since fuel usually accounts for half of the cost of ocean transportation, this brings huge economic losses to ocean transportation. . At the same time, the excessive use of fuel directly increases the CO 2 and SO 2 Emissions directly or indirectly affect human health. On the other hand, the emission of these greenhouse gases also has a negative impact on the global environment. The foul...

AI Technical Summary

Problems solved by technology

During the voyage of the hull, seawater and impurities in the seawater will cause erosion and corrosion on the surface of the hull, causing wear on the surface of the hull. These abrasions increase the corrosion of the hull surface, which will increase the navigation resistance and reduce the service life.

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