▎ 摘　　要

NOVELTY - Multi-layer structure bionic fluorescent anti-fouling and erosion-resistant coating comprises multi-layered bionic fluorescent antifouling coating has 4-layer structure, from top to bottom, a single-layer graphene layer, a transparent polyurethane layer, a polydimethylsiloxane/polyurethane/phosphor composite layer, and a polydimethylsiloxane/polyurethane composite layer. The transparent polyurethane layer is made of a single-component highly transparent polyurethane material. The polydimethylsiloxane (PDMS)/polyurethane/phosphor composite layer is formed by a mixture of double-component highly transparent polydimethylsiloxane material, and single-component highly transparent polyurethane and phosphor. The mass ratio of phosphor is 30-60 wt.%. The total mass ratio of the double-component and single-component polyurethane is 40-70 wt%. The composite layer is composed of double-component highly transparent PDMS material and single-component highly transparent polyurethane compound. USE - Used as multi-layer structure bionic fluorescent anti-fouling and erosion-resistant coating. ADVANTAGE - The coating has gradually increased Young's modulus of the multilayer structure from the bottom layer to the surface layer, can reduce the erosion of the coating by water/impurities, and has both antifouling and anti-erosion capabilities. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing the multi-layer structure bionic fluorescent antifouling anti-erosion coating, comprising (1) preparing PDMS/ polyurethane layer: the mass ratio of the single-component high-transparent polyurethane is 10 wt.%; the mass ratio of the double-component high-transparent PDMS is 90 wt.%; the double-component high transparent PDMS is composed of first component and second component in the ratio of 10:1; adding the single-component high-transparent polyurethane into the first component of the double-component high-transparent PDMS; then under the mechanical stirrer, stirring for 2 hours under a mechanical stirrer, then adding the double-component high-transparency PDMS second component, stirring for 20 minutes, and then move to Deaeration treatment is carried out in the deaeration barrel, and then pouring into a 0.5 mm deep mold, and moving to a heating platform, and heating at 60 degrees C for 5 hours to solidify and shape to obtain a 0.5 mm thick PDMS/polyurethane film; (2) preparing PDMS/polyurethane/phosphor layer: using the mass ratio of the fluorescent powder is 30-60 wt.%; the mass ratio of the double-component high-transparent PDMS material and the single-component high-transparent polyurethane is 40-70 wt.%; the double-component high transparent PDMS is composed of first component and second component in the ratio of 10:1; mixing the first component of the double-component high transparent PDMS and the single component transparent polyurethane; then adding fluorescent powder; then stirring for 30 minutes in the mechanical stirrer, then adding the second component of the double-component high-transparent PDMS; stirring for 20 minutes, then moving to the defoaming barrel for defoaming processing; obtaining PDMS/polyurethane/fluorescent powder solution after defoaming; the PDMS/polyurethane film obtained in the step (1) is moved to the vacuum plasma processing instrument for O2Plasma processing for 10 minutes, for enhancing the bonding performance with other layers, after finishing processing, flatly spread to a 1 mm thick mold; then pouring the PDMS/polyurethane/fluorescent powder solution to the PDMS/ polyurethane film surface, then moving the mold to the heating platform, heating for 30 minutes at 120 degrees C, the PDMS/polyurethane/fluorescent powder layer quickly curing; (3) preparing transparent polyurethane layer: moving the 1mm film prepared in step (2) to the vacuum plasma processing instrument for O2Plasma processing for 10 minutes, for enhancing the bonding performance with other layers; then pouring the single component high transparent polyurethane solution to the surface of the 1mm film; then placing on the coating instrument; setting the corresponding rotating speed and time; forming polyurethane film with about 10 m thickness on the surface; then curing for 24 hours at room temperature to obtain the bottom three-layer structure of the coating; and (4) preparing single-layer graphene layer: firstly, using chemical vapor deposition (CVD) method to grow single-layer graphene on the copper substrate, then peeling for further use; moving the film prepared in the step (3) to the vacuum plasma processing apparatus to perform O2 plasma surface modification treatment for 10 minutes; then, using wet transfer to transfer the single-layer graphene film to the surface of the three-layer structure after surface modification treatment to obtain multi-layer structure bionic fluorescent antifouling anti-erosion coating. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the multi-layer structure bionic fluorescent anti-fouling and erosion-resistant coating (Drawing includes non-English language text).