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A superhydrophobic vehicle with drag reduction function and preparation method thereof

A super-hydrophobic and sailing body technology, applied in biocide-containing paints, anti-fouling/underwater coatings, special-purpose ships, etc., can solve the problems of no literature reports and application precedents, and achieve chemical stability and mechanical stability Lifting, load-carrying capacity improvement, impact resistance effect

Active Publication Date: 2021-11-26
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many research reports and patents on the preparation of superhydrophobic surfaces by the bottom-up method, there are no literature reports and application precedents for the precise control of the surface structure through the bottom-up approach.
In addition, the mushroom-shaped multi-level micro-nano structure is of great help to achieve super-hydrophobic properties, but the current construction of mushroom-shaped micro-nano structures can only be realized by top-down methods, such as laser etching, plasma etching, etc. At present, there is no precedent for preparing a superhydrophobic surface with mushroom-like structure by bottom-up method.

Method used

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  • A superhydrophobic vehicle with drag reduction function and preparation method thereof
  • A superhydrophobic vehicle with drag reduction function and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] Chemically oxidize 150-mesh copper mesh in a mixed solution of potassium persulfate (0.13M) and sodium hydroxide (1.5M) for 10 minutes to grow copper hydroxide nanowires as the intermediate layer; based on copper hydroxide nanowires , and further transfer the sample to a hexahydroxytriphenyl solution of copper ions (75mg), the solvent is a mixed solution of N,N-dimethylformamide and water (volume ratio is 1:10), and react at 50°C for 10min , in-situ growth of MOF nanowhiskers to construct a nanowire-nanowhiskers hierarchical structure; finally, pulling and dipping once in PDMS ethyl acetate solution (0.1g / mL), and then cross-linking and curing at 80°C for 2h , to obtain two-dimensional superhydrophobic materials.

Embodiment 2

[0032] Chemically oxidize the 300-mesh copper mesh in a mixed solution of potassium persulfate (0.13M) and sodium hydroxide (1.5M) for 10 minutes to grow copper hydroxide nanowires as the intermediate layer; based on copper hydroxide nanowires , and further transfer the sample to a hexahydroxytriphenyl solution of copper ions (75mg), the solvent is a mixed solution of N,N-dimethylformamide and water (volume ratio is 1:10), and react at 70°C for 10min , in-situ growth of MOF nanowhiskers to construct a nanowire-nanowhiskers hierarchical structure; finally, pulling and dipping once in PDMS ethyl acetate solution (0.1g / mL), and then cross-linking and curing at 80°C for 2h , to obtain two-dimensional superhydrophobic materials.

Embodiment 3

[0034]Chemically oxidize 500-mesh copper mesh in a mixed solution of ammonium persulfate (0.13M) and sodium hydroxide (1.5M) for 10 minutes to grow copper hydroxide nanowires as the intermediate layer; based on copper hydroxide nanowires , and further transfer the sample to a hexahydroxytriphenyl solution of copper ions (75mg), the solvent is a mixed solution of N,N-dimethylformamide and water (volume ratio is 1:10), react at 80°C for 10min , in situ growth of MOF nanowhiskers to construct a nanowire-nanowhiskers hierarchical structure; finally, pulling and dipping in PDMS ethyl acetate solution (0.1g / mL) for 10 times, followed by cross-linking and curing at 80°C for 2h , to obtain two-dimensional superhydrophobic materials.

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Abstract

The invention discloses a super-hydrophobic sailing body with a drag-reducing function and a preparation method thereof. The preparation method of the super-hydrophobic sailing body is to chemically oxidize a metal substrate in an alkaline solution of persulfate to grow a metal nanowire intermediate layer Finally, based on this structure, the sample was further transferred to an organic ligand solution to construct a nanowire-nanowhisker multilevel structure, and finally modified with a low surface energy substance to obtain a two-dimensional superhydrophobic material. The super-hydrophobic two-dimensional material prepared by the present invention, due to its high toughness, can be bent into a three-dimensional cage as a navigation body, has a high water carrying capacity and a water surface navigation speed, and is resistant to acid, alkali and salt Excellent resistance to chemical environments in solution. The introduction of low surface energy substances not only endows the material with good antifouling and self-cleaning ability, but also significantly improves the bonding strength between the coating and the substrate, which greatly improves the mechanical stability of the superhydrophobic material.

Description

technical field [0001] The invention relates to a super-hydrophobic sailing body with a drag-reducing function and a preparation method thereof, and belongs to the technical field of preparation of nanometer materials and surface interface materials. Background technique [0002] At present, due to the increasing complexity of the marine environment, traditional marine navigation vehicles are facing a series of practical problems such as serious surface corrosion and wear, increased navigation resistance, and decreased navigation speed. Superhydrophobic materials have unique surface and interface properties, so they have potential application value in many industrial fields, and can solve industrial problems that are currently difficult to solve with traditional materials. For example, in the field of marine industry, the presence of superhydrophobic surfaces in the underwater environment can provide excellent drag reduction capabilities for marine vehicles. Compared with tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D183/08C09D187/00C09D5/16C23C22/63B63B35/00B63B73/00B63B71/00
CPCB63B35/00B63B71/00B63B73/00C09D5/1662C09D183/04C09D183/08C09D187/00C23C22/63
Inventor 王梦可黄卫春訾由朱君
Owner NANTONG UNIVERSITY