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Transparent super-hydrophobic film and preparation method and application thereof

A super-hydrophobic, thin-film technology, applied in ion implantation plating, metal material coating process, coating, etc., can solve the problems of poor performance, large pollution, long and complicated experimental process, etc., and achieve the effect of good hydrophobicity

Active Publication Date: 2017-06-13
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, the existing reports all focus on using chemical methods such as chemical baths and sol-gels. The experimental process is lengthy and complicated, with high pollution, poor repeatability, and poor performance. It is difficult to achieve large-scale production.
In addition, the prepared hydrophobic films are very thick, hundreds of nanometers or even micrometers in size, with a transparency of no more than 95%, and a contact angle of less than 170°.

Method used

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  • Transparent super-hydrophobic film and preparation method and application thereof
  • Transparent super-hydrophobic film and preparation method and application thereof
  • Transparent super-hydrophobic film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Prepare transparent superhydrophobic film on n-Si surface, preparation method is as follows:

[0081] 1) The cleaned n-Si is placed on a magnetron sputtering substrate stage, an ultrapure zinc target with a purity of 99.999% is used as a sputtering source, and ultrapure argon is used as a working gas to prepare a zinc film. During the preparation of the zinc film, vacuumize until the background vacuum exceeds 10 - 7 torr; the working pressure is 8mtorr; the substrate temperature is room temperature; the RF power is 150w; the deposition time is 50min.

[0082] 2) The sample obtained in step 1) (the zinc film is supported on the upper surface of the n-Si substrate) is placed on the substrate stage of magnetron sputtering to anneal the zinc film to prepare a zinc oxide film. Vacuum until the background vacuum exceeds 10 -6 torr; heat the substrate to 350°C, feed high-purity oxygen 10 sccm, and anneal in an oxygen atmosphere for 1 hour; then raise the substrate temperatu...

Embodiment 2

[0088] Except that the substrate was replaced by ordinary glass (Glass), and the fluorination treatment time of step 3) was adjusted to 20s, other preparation methods and conditions were the same as in Example 1.

[0089] The product prepared in this embodiment is composed of ordinary glass and a transparent super-hydrophobic film loaded on its surface, named glass coated with self-cleaning film.

[0090] Figure 3a The surface topography figure of the product prepared for this embodiment, as can be seen from the figure, the surface of the transparent self-cleaning film is rough, and many irregular nanorods are distributed.

[0091] Figure 3b The measured contact angle diagram of the product prepared for this example and water, it can be seen from the figure that the contact angle with water is >170°, and it has superhydrophobicity.

[0092] Figure 4 It is a comparison chart of the spectral curves of the product prepared in Example 2 and the ordinary glass of Comparative ...

Embodiment 3

[0094] Except that the substrate was replaced by K9 glass, and the deposition time of step 1) was adjusted to 1 h, other preparation methods and conditions were the same as in Example 2.

[0095] The product prepared in this embodiment is composed of K9 glass and a transparent super-hydrophobic film loaded on its surface.

[0096] Figure 5a The AFM image of the product prepared in this embodiment shows that the roughness Ra=57.

[0097] Figure 5b The measured contact angle diagram of the product prepared for this example and water, it can be seen from the figure that the contact angle with water>170°, which has excellent superhydrophobicity.

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Abstract

The invention relates to a transparent super-hydrophobic film and a preparation method and application thereof. The transparent super-hydrophobic film combines ultrathin property, ultra-transparent property and extremely good super-hydrophobicity, the thickness of the transparent super-hydrophobic film is 60-150nm, the transmittance of the transparent super-hydrophobic film is 90-97%, and a contact angle with water is greater than 167 degrees. According to the transparent super-hydrophobic film, a method combining radio frequency magnetron sputtering with annealing is adopted to prepare a thin-layer zinc oxide nanostructure on various transparent or nontransparent substrates including common glass, k9 glass, glass plated with an antireflection film or silicon and the like and carry out low-temperature fluoridation, surface energy is greatly lowered, and super-hydrophobic characteristics are expressed. The method has the advantages of simple technology, less pollution, short period and important and wide meanings since a manufacture process is carried out under high vacuum, can be repeatedly operated, is easy in large-scale production, can be widely applied to high-end fields including photoelectric devices, optical devices and the like which have high requirements on transmittance and superhydrophobicity and also can be widely applied to low-end fields of industrial and daily lives including automobile glass, domestic glass and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional films, and relates to a transparent super-hydrophobic film, its preparation method and application, in particular to a transparent super-hydrophobic film based on an ultra-thin zinc oxide film, its preparation method and its application. Background technique [0002] The so-called superhydrophobicity requires that the stable contact angle of the material surface is greater than 150°, and the rolling contact angle is less than 10°. The water droplets on the surface are spherical, and the water droplets can roll off the surface under the action of their own gravity or external force. Due to its self-cleaning function, superhydrophobic surfaces have attracted more and more attention in recent years, and can be widely used in many fields, such as outdoor antennas can prevent snow accumulation, ocean-going ships and oil pipelines can prevent dirt and corrosion, and micro-syringe needle...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/08C23C14/58
Inventor 闫兰琴褚卫国徐丽华宋志伟
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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