Substrate with super-hydrophobic/super-low-adhesion surface and preparation method of substrate

A super-hydrophobic, matrix technology, used in devices for coating liquids on surfaces, special surfaces, manufacturing tools, etc., can solve the problems of narrow range of applicable materials, cumbersome preparation process, poor durability, etc., and achieve precise and controllable preparation process. Simple preparation steps and the effect of a wide range of substrates

Active Publication Date: 2019-11-12
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a superhydrophobic / ultra-low adhesion surface for the above-mentioned problems such as cumbersome and uncontrollable preparation process, poor durability, narrow range of applicable materials, and single function of the prepared surface. The substrate and its preparation method, the present invention has a simple and controllable production process and a wide range of applicable materials

Method used

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  • Substrate with super-hydrophobic/super-low-adhesion surface and preparation method of substrate
  • Substrate with super-hydrophobic/super-low-adhesion surface and preparation method of substrate
  • Substrate with super-hydrophobic/super-low-adhesion surface and preparation method of substrate

Examples

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Embodiment 1

[0050] In this embodiment, a substrate with a super-hydrophobic / ultra-low adhesion surface is made of ordinary glass with a thickness of 2 mm. A uniformly distributed regular hexagonal array of circular pits and randomly distributed flocculent structures are constructed on the glass surface. The diameter of the pit is 10 μm (that is, the pit area is 78.5 μm 2), the maximum depth is 5μm, the pit spacing (ie the side length of the regular hexagonal array) is 24μm; the length of the floc structure is 120nm, the width is 120nm, and the height is 120nm; the glass surface uses 1H, 1H, 2H, 2H-perfluorodecane 1H,1H,2H,2H-perfluorodecyltriethoxysilane solution is 1H,1H,2H,2H-perfluorodecyltriethoxysilane The mixture with anhydrous ethanol mass ratio of 1:55.

[0051] The above-mentioned preparation method of the substrate with super-hydrophobic / ultra-low adhesion surface comprises the following steps:

[0052] Step a: ultrasonically clean the ordinary glass, and after cleaning, dry i...

Embodiment 2

[0057] A substrate with a super-hydrophobic / ultra-low adhesion surface in this embodiment is a silicon wafer with a thickness of 1 mm. A uniformly distributed square array of circular pits and randomly distributed flocculent structures are constructed on the surface of the silicon wafer. The diameter of the pit is 8.4 μm (that is, the pit area is 55 μm 2 ), the maximum depth is 0.5 μm, and the pit spacing (ie, the side length of the square array) is 18 μm; the surface of the silicon wafer is also constructed with a randomly distributed flocculent structure with a length of 50 nm, a width of 50 nm, and a height of 50 nm; The surface is modified with 1H,1H,2H,2H-perfluorodecyltriethoxysilane solution with low surface energy, 1H,1H,2H,2H-perfluorodecyltriethoxysilane solution is 1H,1H, The mixture of 2H,2H-perfluorodecyltriethoxysilane and absolute ethanol with a mass ratio of 1:80.

[0058] The above-mentioned preparation method of the substrate with super-hydrophobic / ultra-low...

Embodiment 3

[0064] A substrate with a super-hydrophobic / ultra-low adhesion surface in this embodiment is an aluminum sheet with a thickness of 2 mm, and a uniformly distributed regular hexagonal array of circular pits and randomly distributed flocculent structures are constructed on the surface of the aluminum sheet. , the diameter of the pit is 12.3 μm (that is, the pit area is 119 μm 2 ), the maximum depth is 10μm, the pit spacing (that is, the length of the regular hexagonal array) is 30μm; the length of the floc structure is 200nm, the width is 200nm, and the height is 200nm; the surface of the aluminum sheet uses 1H, 1H, 2H, 2H-perfluoro Decyltriethoxysilane solution for low surface energy modification, 1H,1H,2H,2H-perfluorodecyltriethoxysilane solution is 1H,1H,2H,2H-perfluorodecyltriethoxy The mass ratio of silane and absolute ethanol is 1:40.

[0065] The above-mentioned preparation method of the substrate with super-hydrophobic / ultra-low adhesion surface comprises the following ...

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Abstract

The invention discloses a substrate with a super-hydrophobic/super-low-adhesion surface. A pit array and a flocculent structure are built on the surface of the substrate, and the portion between the pit array and the flocculent structure on the surface of the substrate is filled with air. The surface of the substrate is modified with low-surface-energy matter, thus, the surface of the substrate has super-hydrophobic/super-low-adhesion performance, and the functions of self-cleaning, fog preventing, freezing preventing and self-water-repelling of the surface of the substrate are achieved. By the adoption of the substrate with the super-hydrophobic/super-low-adhesion surface and a preparation method of the substrate, the manufacturing process is simple and controllable, and the applicable material range is wide.

Description

technical field [0001] The invention relates to a substrate with a super-hydrophobic / ultra-low adhesion surface and a preparation method thereof, belonging to the technical field of material surface treatment. Background technique [0002] A superhydrophobic / ultra-low adhesion surface refers to a substrate surface with a static contact angle greater than 150° and a rolling angle less than 10°. Substrates with superhydrophobic / ultralow adhesion surfaces can achieve different functions, such as self-cleaning, anti-icing, anti-fogging, self-driving water, and anti-biological adhesion, and have important applications in many fields. [0003] With the development of processing technology and the progress of composite materials, more and more attention has been paid to modifying the surface of the substrate to make it have superhydrophobic / ultra-low adhesion properties and obtain corresponding functions. Existing common methods for processing and modifying micro-nano structures o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D5/08B23K26/352
CPCB05D5/08B05D7/24B23K26/352
Inventor 李国强何旭尧赖旭伟杨益蔡勇
Owner SOUTHWEAT UNIV OF SCI & TECH
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