Bionic marine antifouling skin and preparation method thereof

Abstract

The invention discloses a bionic marine antifouling skin and a preparation method thereof, and belongs to the technical field of bionic materials. The bionic marine antifouling skin is composed of a bottom layer, a porous microstructure layer, microcapsules, coral-imitating tentacles and coral-imitating mucus; the bottom layer is formed by compounding silicone rubber and polyurethane, and the thickness of the bottom layer is 1-5 mm; the porous structure layer is made of a silicon rubber material, and the thickness of the porous structure layer is 1-5mm; the aperture of the porous structure is 1-100mu m, and the porous structure layer also comprises 1-3wt% of microcapsules, wherein the microcapsules wrap silicone oil or edible oil; the surface of the porous structure layer is also provided with coral-imitating tentacles, the coral-imitating tentacles are made of silicon rubber, the tentacles are trapezoidal cylinders or circular truncated cones, the height h of the tentacles is 5-15mm, the distance a of circle centers of the tentacles ranges from 1 mm to 5 mm, and the ratio m: n of the diameter of the tail ends of the tentacles to the diameter of the bottoms of the tentacles ranges from 0.5 to 0.8; and the coral-imitating mucus is silicone oil or edible oil and is coated on the surface of the porous structure layer. The material has the characteristics of strong adsorption and antifouling property, and by adding the microcapsule, the stability of SLIPS is improved.

Description

technical field [0001] The invention belongs to the technical field of bionic materials. Background technique [0002] Marine biofouling refers to a phenomenon in which fouling organisms in the ocean such as bacteria, algae, and barnacles adhere to underwater surfaces. Any surface immersed in the ocean is affected by marine biofouling. When marine biofouling occurs, it will gradually accumulate on the underwater surface, resulting in an increase in surface roughness, resulting in an increase in the sailing resistance of the hull. In order to maintain the speed, more fuel consumption is required, which directly brings about an increase in transportation costs. . Excess fuel use also enhances CO 2 , SO 2 Emissions of greenhouse gases, leading to the greenhouse effect. Biofouling will also accelerate the corrosion of underwater surfaces, causing surface damage, affecting the safety of equipment and facilities in the ocean, and increasing maintenance costs. Marine biofoulin...

AI Technical Summary

Problems solved by technology

[0003] At present, the new non-toxic anti-fouling and anti-corrosion technologies include low surface energy type, micro-nano structure bionic type, etc. However, the adhesion between the low-surface coating and the substrate is poor, and the micro-nano structure of the micro-nano structure bionic coating is easy to be damaged in complex and harsh environments. The anti-fouling performance will be invalid if it is destroyed, so that their application value will be greatly reduced.

Biomimetic super slippery surface (SLIPS) is a new type of high-efficiency and green antifouling technology. SLIPS is a binary surface composed of lubricating fluid / porous microstructure. The currently reported SLIPS is easy to lose under the action of fluid erosion and long-term Poor use stability and poor adhesion on the substrate, these shortcomings limit their engineering applications

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