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Preparation method of super-hydrophobic surface

A super-hydrophobic surface and hydrophobic substance technology, which is applied in the field of super-hydrophobic surface preparation, can solve the problems of poor bonding between primary structure photoresist and material body, super-hydrophobic surface structure damage, and super-hydrophobic surface failure. The effect of biocompatibility, good mechanical properties, and simple method

Inactive Publication Date: 2012-07-11
LANZHOU UNIVERSITY
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  • Claims
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Problems solved by technology

This technology has obvious defects. Due to the poor bonding force between the primary structure photoresist and the material body, the primary structure is easy to fall off when subjected to external force, resulting in the destruction of the superhydrophobic surface structure, thus making the superhydrophobic surface invalid.

Method used

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  • Preparation method of super-hydrophobic surface
  • Preparation method of super-hydrophobic surface
  • Preparation method of super-hydrophobic surface

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Embodiment Construction

[0029] The polymer substrate used in the embodiments of the present invention is a polyethylene terephthalate film. The specific method is: first wash and dry the polyethylene terephthalate film, and then spin-coat a layer of photoresist (model DNR-L300) on it at a speed of 3000-5000 rpm. Pre-bake at 90°C for half an hour, expose, post-bake at 110°C for half an hour, and then develop to obtain a dotted array of photoresist. Then perform ion beam etching on it, the voltage is 1kV-10kV, the current is 0.01-1.5mA, and argon gas is passed through, and the vacuum degree is 1×10 -3 -1×10 -2Pa. A polymer columnar array with photoresist on the top is obtained. Then the photoresist is washed away with a solution to prepare a polymer columnar array. Then magnetron sputtering is used to sputter a zinc oxide seed layer on the surface of the polymer columnar array. Put it into the substrate into Zn(NO 3 ) 2 react in a mixed culture solution with hexamethylenetetramine at 60-100 degr...

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Abstract

The invention discloses a method for preparing a super-hydrophobic surface on a surface of a random high molecular material, particularly a high molecular membrane material. The method comprises preparing a cylindrical array first stage structure on the surface of a random high molecular substrate by using a method of surface etching, wherein the cylindrical array is made of a material same as the material of the substrate; further depositing a zinc oxide seeding layer on the surface of the cylindrical array first stage structure; afterwards putting the substrate into a growth liquid in a growing zinc oxide nano-line array, then a second stage structure of the growing zinc oxide nano-line array grows from the surface of the first stage structure; dipping the high molecular substrate prepared with the first and the second stage structures into a solution with hydrophobic substances; after the surfaces of the first and second stage structures of the high molecular substrate are materialized together with the hydrophobic substances, taking out the high molecular substrate, and drying to obtain the desired super-hydrophobic surface.

Description

technical field [0001] The invention relates to a method for preparing a super-hydrophobic surface on the surface of any polymer material, especially on the surface of a polymer film material. Background technique [0002] Animals and plants in nature have many strange phenomena, and superhydrophobic surfaces are one of them. The superhydrophobic surfaces of plants and animals are caused by wax-coated rough surface structures. Wax can make the surface have lower surface energy and thus increase the contact angle, while the rough surface structure can further increase this hydrophobic effect. See: Jiang L, Wang R, Yang B, et al. [J]. Pure Appl. Chem., 2000, 72-73. [0003] If a super-hydrophobic (super-hydrophobic) surface can be formed on the surface of artificial materials, that is, the formed surface has a large contact angle and a small rolling angle, which meets the technical requirements of super-hydrophobic, and its remarkable lotus leaf effect makes the surface The...

Claims

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Application Information

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IPC IPC(8): B05D5/08B29C59/14C08J7/06C23C14/08C23C14/34C30B29/16C30B29/62C30B7/00
Inventor 秦勇吴巍炜成立袁苗苗邱家稳
Owner LANZHOU UNIVERSITY
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