A kind of multi-layer biomimetic fluorescent anti-fouling and anti-erosion coating and preparation method thereof

Abstract

The invention discloses a bionic fluorescent antifouling coating with a multilayer structure and a preparation method thereof, belonging to the technical field of bionic materials. The bionic fluorescent antifouling coating with a multilayer structure has a four-layer structure, which is as follows from top to bottom: Single-layer graphene layer, transparent polyurethane layer, PDMS / polyurethane / phosphor composite layer and PDMS / polyurethane composite layer. The fluorescence produced by the PDMS / polyurethane / phosphor composite layer can inhibit the adhesion of algae, and the graphene layer on the surface can kill bacteria. Through the synergistic effect of the two, the formation of biofilm can be effectively inhibited, and then Inhibits the adhesion and colonization of marine organisms and acts as an antifouling agent. The Young's modulus of the multilayer structure coating of the present invention increases gradually from the bottom layer to the surface layer. Due to the gradient change of Young's modulus, it can reduce the erosion of the coating by water flow / impurity. Traditional anti-fouling or anti-erosion coatings often have a single function, but the anti-fouling coating of the present invention has both anti-fouling and anti-erosion capabilities.

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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