Bionic array structure surface antifouling drag reduction material

An array structure and antifouling technology, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve the problems of complex manufacturing and single structure, reduce fluid resistance, easily obtain raw materials, reduce The effect of small running resistance

Active Publication Date: 2021-02-02
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patented products are all air layer anti-fouling and drag-reducing materials, which have problems such as single structure and complicated manufacturing.

Method used

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  • Bionic array structure surface antifouling drag reduction material
  • Bionic array structure surface antifouling drag reduction material
  • Bionic array structure surface antifouling drag reduction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The main structure of the anti-fouling and drag-reducing material on the surface of the bionic array structure involved in this embodiment includes a base layer 1, a surface structure layer 2, a hydrophobic layer 3 and a modified layer 4; the base layer 1 is provided with a surface layer structure layer 2, and the base layer 1 and the surface structure layer 2 is provided with a hydrophobic layer 3, and the top of the surface structure layer 2 is covered with a modified layer 4; the surface structure layer 2 is composed of several anti-fouling and drag-reducing units 20 arranged in a matrix, two adjacent The horizontal spacing and vertical spacing of the antifouling and drag reducing units 20 are both 2000 μm; each antifouling and drag reducing unit 20 is composed of a head ring 21 and a pillar 22. The head ring 21 is fixedly connected to the top of the pillar 22, and the pillar The bottom end of 22 is fixedly connected with the base layer 1; the head ring 21 is a cross ...

Embodiment 2

[0027] Both the base layer 1 and the surface structure layer 2 involved in this embodiment are made of polymer materials, including but not limited to ABS resin, epoxy resin, acrylic resin, PLA resin and LCD resin.

[0028] The preparation process of the anti-fouling and drag-reducing material on the surface of the bionic array structure involved in the present invention includes three steps of preparing the base layer 1 and the surface structure layer 2, preparing the modified layer 4 and preparing the hydrophobic layer 3:

[0029] (1) Preparation of base layer 1 and surface structure layer 2: ABS resin is prepared into base layer 1 and surface structure layer 2 by 3D printing, wherein the size of base layer 1 is 150mm×75mm;

[0030] (2) Preparation of modified layer 4: hang the head ring 21 upside down and then nano-SiO 2 In the mixed sample of particles and silane coupling agent KH560, the surface of the head ring 21 is hydrophobically modified;

[0031] (3) Prepare the hy...

Embodiment 3

[0033] This example involves the test of the inhibition rate of the antifouling and drag reducing material on the surface of the bionic array structure to the attachment of mussel silk: the antifouling and drag reducing material on the surface of the bionic array structure prepared in Example 2 and the blank ABS resin material were put into seawater at the same time, Put 10 mussels on the surface of the two groups of materials respectively, observe the number of secretion and attachment of the mussel foot silk on the surface of the two groups of materials after 24 hours, and compare with the inhibition rate of the blank ABS resin material on the attachment of the mussel foot silk to calculate: bionic array The anti-fouling and drag-reducing material on the surface of the structure can inhibit the attachment of mussel silk by 92%.

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Abstract

The invention belongs to the technical field of marine antifouling materials, and particularly relates to a bionic array structure surface antifouling drag reduction material, which is characterized in that a surface structure is prepared from a resin material by referring to a human pagoda tree duckweed leaf surface microstructure, a bionic structure head is grafted and modified by using a silanecoupling agent and nano SiO2, and a PDMS casting method is adopted to obtain a root hydrophobic property. The antifouling and drag reduction effects are achieved through the structure and hydrophobicity of an organic silicon material, an underwater air layer can be formed on the surface of the material after the material is put into seawater, and the array structure and the air layer can play roles in resisting biological attachment and reducing drag, due to the special structure and surface characteristics, the preparation method is simple, the raw materials are easy to obtain, the bionic cross annular column head structure and the hydrophobic characteristic are achieved, the bionic cross annular column head structure can be applied to the surfaces of speedboats, UUVs, underwater gliders, ships, underwater vehicles and the like, fouling organism attachment is prevented, running resistance is reduced, ship energy consumption is reduced, and potential application prospects are achieved.

Description

Technical field: [0001] The invention belongs to the technical field of marine antifouling materials, and in particular relates to a surface antifouling and drag-reducing material with a bionic array structure, which can prevent fouling organisms from adhering to the surface of a ship in a marine environment and reduce the running resistance of the ship. Background technique: [0002] Marine biofouling will cause serious harm to ships, including increasing the ship's navigation resistance, destroying the protective coating of facilities, and corroding the hull substrate. The anti-fouling and drag-reducing material is the outermost protective material for preventing underwater biofouling on the outer surface of a ship and reducing the running resistance of the ship. Biofouling occurs at the interface of seawater materials in contact with organisms, which increases the roughness of the hull and increases the navigation resistance. The surface state of the hull directly affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16
CPCC09D5/1693
Inventor 郑纪勇杨兴杰蔺存国孙智勇邱峥辉张金伟王利
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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