Super-hydrophobic transparent glass and preparation method thereof

A transparent glass and super-hydrophobic technology, which is applied to the surface of super-hydrophobic and high-transparency glass and its preparation, and the field of super-hydrophobic and high-transparency glass and its preparation. Low efficiency and other problems, to achieve the effect of good superhydrophobicity, self-sturdy, and guaranteed stability

Inactive Publication Date: 2017-12-22
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a superhydrophobic transparent glass and its preparation method, aiming to provide a glass with stable structure, superhydrophobic performance and high light transmission performance; The method of glass, that is, the use of ultrafast laser to directly ablate the submicron-nanometer periodic dot-like distribution structure on the glass surface, realize the superhydrophobic and high transparency of the glass surface, solve the general co

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  • Super-hydrophobic transparent glass and preparation method thereof
  • Super-hydrophobic transparent glass and preparation method thereof
  • Super-hydrophobic transparent glass and preparation method thereof

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preparation example Construction

[0025] A kind of superhydrophobic transparent glass preparation method that the present invention proposes, its specific steps are as follows:

[0026] 1) Ultrashort pulse laser is used to ablate discrete point-like pits on the glass surface; the ultrashort pulse laser is femtosecond laser or picosecond laser; the glass can be ordinary glass or quartz glass.

[0027] 2) Perform multiple variable-energy laser pulse processing on each point-shaped small pit, so that the pit presents a self-assembled micro-nano structure formed by multiple scanning superimpositions; The number of treatments is generally 1-3 times, and the energy of the laser pulse can be increased or decreased in a gradient; after multiple variable energy treatments, the small pit presents a rich micro-nano structure formed by multiple scanning superimpositions, which improves the micro-nano-level roughness in the pit , to improve superhydrophobic properties;

[0028] 3) Low free energy surface treatment is carr...

Embodiment 1

[0034] In this embodiment, a high-power femtosecond laser with energy gradient changes is used to prepare a super-hydrophobic transparent quartz glass surface through multiple direct writing, including the following steps:

[0035] 1), the preparation of quartz glass: carry out ultrasonic cleaning to quartz glass with alcohol and acetone, dry and set aside;

[0036] 2) Laser processing: using high-power femtosecond laser, combined with X-Y scanning galvanometer, ablate the same dot matrix pattern on the same glass surface three times, each time using laser energy with different energy flux density to ablate the glass surface, forming a The periodic pit structure of submicron stripes and nanoparticles, the pit diameter is 20 microns, the depth is 1 micron, and the spacing is 30 microns, the inner surface of the micron-scale pits is distributed with a period of about 500 nanometers. Particles, scanning electron micrographs of micro-nanostructures on the glass surface are shown i...

Embodiment 2

[0039] In this embodiment, a high-power femtosecond laser is used to prepare a superhydrophobic transparent quartz glass surface at one time, including the following steps:

[0040] 1), the preparation of quartz glass: carry out ultrasonic cleaning to quartz glass with alcohol and acetone, dry and set aside;

[0041] 2) Laser processing: Using high-power femtosecond laser, combined with X-Y scanning galvanometer, by setting the laser processing time, multiple equal pulse laser energies are applied to the same pit at the same time, and ablation with submicron on the glass surface at one time The periodic point pit structure of the stripes, the pit diameter is 20 microns, the depth is 2-4 microns, and the spacing is 30 microns. There are a large number of irregular corrugated substructures distributed on the inner surface of the micron-scale point pits. The micro-nano structure of the obtained glass surface Scanning electron microscope photos as Figure 5 shown.

[0042] Using...

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Abstract

The invention relates to super-hydrophobic transparent glass and a preparation method thereof, in particular to super-hydrophobic high-transparent glass prepared through ultrafast laser and a preparation method of the high-transparent glass. Discrete dotted pits are distributed in the surface of the super-hydrophobic transparent glass, and micro-nano structures are formed in the pits. According to the preparation method of the super-hydrophobic transparent glass, the discrete dotted pits are prepared in the surface of the glass through ultra-short laser pulse, each dotted pit is subjected to repeated variable-energy laser pulse treatment, the rich micro-nano structures are formed, and low-free-energy surface treatment is performed with a fluoroalkyl silane gas phase modification method. The method adopts a simple process, the dotted pit structure is accurate and adjustable, the processing process is efficient and controllable, and the repeatability is good. The obtained glass has high transparency, stable super-hydrophobic performance and controllable hydrophobicity and transparency, has the glass surface contact angle reaching 160 degrees and can realize the visible light transmittance up to 90% or above. The super-hydrophobic transparent glass has broad prospects in the field of building window glass, transportation windows, automobile rearview mirrors, water-proof mirrors, solar crystalline silicon cell surface protection and the like.

Description

technical field [0001] The invention relates to a super-hydrophobic high-transparency glass surface and a preparation method thereof, in particular to a super-hydrophobic high-transparency glass prepared by using an ultrafast laser and a preparation method thereof, and belongs to the technical field of super-hydrophobic transparent material preparation. Background technique [0002] The existing superhydrophobic glass is generally coated with a layer of superhydrophobic coating on the glass surface. The coating itself has low free energy and often contains micro-nano particles, which meet the two necessary conditions of low free energy and surface roughness. In order to achieve good hydrophobic and superhydrophobic properties. The super-hydrophobic performance is macroscopically manifested by the contact angle of water droplets on the glass surface is greater than 150°, and the water droplets do not adhere to the glass surface and appear as round beads, which can spontaneous...

Claims

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Application Information

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IPC IPC(8): C03C15/00C03C23/00
CPCC03C15/00C03C23/0025
Inventor 钟敏霖张红军林义
Owner TSINGHUA UNIV
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