High-performance Biomimetic Anti-fouling Coating Preparation And Mechanism Of Anti-fouling Study

In this acticle, to solve the ship problems of green antifouling, friction and noise reduction and so on, according to the rule of plankton in the sea that attach the ship hull and principle of bionic antifouling, we put forward that using the solution of bionic dolphins skin + epidermis added anti-fouling composite functional groups, selected hydrophobic high-performance acrylic polymer materials as the coating matrix, with hydrophilic natural non-toxic polymer antibacterial persimmon tannin-bibulous colophony, utilize Interpenetrating networks method to composite the coating with a hydrophily-hydrophobicity microphase separation on the cuticular layer. The SAP (Super Absorbent Polymer) on the coating surface homogeneityly swelling in the water, to simulate the active of dolphin secrete mucus when it swimming, this phenomenon can produce an effect to block the marine organism subsist foundation and friction reduction. Contemporarily, non-toxic nanometer inorganic and metal antibiosis material was added and equably dispersed.6 months experiment was tested in the sea after samples prepared. Various kinds of international standard was adopted to test the coating performance, SEM (scanning electron microscope) was selected to observe inorganic and metal antibiosis material scatter, AFM(atomic force microscope) was took to deeply characterize the surface appearance of generated nanometer ZnO and coating. The performance test and marine experiment results showed that:Polyacrylate resin was prepared by IPN(Interpenetrating Polymer Network) method, the effect of monomer, initiator dosage, temperature and time to the resin performance was discussed. The result were that:it has favorable weather fastness, mechanical strength, anchoring strength, hydrophobicity and so on.Coating was composited by hydrophobicity acrylate polymer and hydrophily tannin SAP. When it absorbed water, a microphase separation structure is formed in the surface, which is similar with the dolphin skin. And after absorbing water, the SAP is become a water gel, which makes the material's surface smooth that like the phenomenon of fishes secrete mucus. That the two bionic ways to simulate the dolphin. The ZnO grains prepared by macromolecule nano-compound technology achieve the effect of nanometer antibiosis rank. Tannin of persimmon, SAPC, inorganic nanometer grains and accessory ingredient all possess certain antibiosis effect, when all of them are composited with polyacrylate and filmed, a kind of membrane will be generated, which can produce a grads effect of antibiosis to kill the marine organisms who pollute the ship hull, that to move forward a single step to strengthen the antifouling function.The performance and microstructural of antifouling coating were analysed and charactered, the effect of bionic structure to the antifouling, material antifouling mechanization was discussed. This study provide a new method to the ship antifouling, friction and noise reduction, apply a reference and evidence to the antifouling mechanization. It is a kind of green high-performance marine antifouling coating.