Preparation method of super-hydrophobic anti-fouling and anti-drag material

Abstract

The invention belongs to the technical field of marine anti-fouling and anti-drag materials, and relates to a preparation method of a super-hydrophobic anti-fouling and anti-drag material with a bionic multilevel structure. The structure and the size of the super-hydrophobic anti-fouling and anti-drag material are designed by referring to the microstructure of the blade surface of a bionic salvinia natans. The preparation method comprises the following steps of firstly, preparing a bionic claw-shaped structure matrix by adopting a high polymer raw material such as resin or rubber through a method comprising 3D micro-nano printing, template imprinting, precision machining, precision micro-electroforming and precision micro-electrolysis, then metallizing the surface of the matrix by using a chemical plating and electrodeposition combined method and forming a millimeter-micron-nanometer multi-stage structure, and finally, using a long-chain alkanoic acid soaking method to achieve the hydrophobic property. The process is simple, the raw materials are easily available, the material can be used for the outer surfaces of marine hulls, underwater vehicles and the like, and the micro-nano structure and the hydrophobicity of the long-chain alkanoic acid jointly act so as to form the air layer in water, such that the super-hydrophobic effect is achieved, and the anti-fouling and anti-drag functions are further achieved.

Description

Technical field: [0001] The invention belongs to the technical field of marine anti-fouling and drag-reducing materials, and specifically relates to a method for preparing a super-hydrophobic anti-fouling and drag-reducing material with a bionic multi-level structure, and prepares "nano-nano" super-hydrophobic and anti-fouling materials based on the microscopic structure of the leaf surface of the leaf. drag reducing material. Background technique: [0002] Marine ships are faced with the problems of biofouling and underwater frictional resistance. Antifouling and drag reduction treatment on the hull surface is an important measure to avoid biofouling hazards and save fuel consumption. Superhydrophobic materials are an important direction for the development of anti-fouling and drag-reducing materials. In the 1970s, after the self-cleaning superhydrophobic effect on the surface of lotus leaves was discovered, superhydrophobic materials gradually entered the field of vision ...

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Problems solved by technology

[0006]The above patents all belong to superhydrophobic materials, but the types of materials and preparation methods are very different, and the structure is often relatively simple, so it is difficult to directly use them as antifouling and drag reducing materials. Moreover, it is difficult to maintain the superhydrophobic state for a long time in the underwater environment.

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