Method for preparing super-hydrophobic functional surface of optical glass by hot press molding

A technology of optical glass and hot press forming, which is applied in glass forming, glass manufacturing equipment, glass reshaping, etc. It can solve the problems of low production efficiency, complexity, easy-to-fall off coating preparation process, etc., and achieve strong bonding force Effect

Active Publication Date: 2021-12-10
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of high repeatability, no pollution, net shape, good stability, simple process, and mass production of superhydrophobic glass surfaces, etc., and solves the structural instability existing in the prior art of coating superhydrophobic coatings on glass surfaces , easy to fall off and the technical problems of the coating preparation process are relatively complicated. In addition, the existing technology uses traditional cold processing technologies such as ultrafast lasers to prepare hydrophobic structures on the glass surface, which has low production efficiency and poor process stability. Demand for Optical Glass with Hydrophobic Surface

Method used

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  • Method for preparing super-hydrophobic functional surface of optical glass by hot press molding
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  • Method for preparing super-hydrophobic functional surface of optical glass by hot press molding

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Embodiment 1

[0052] The invention provides a method for preparing the superhydrophobic functional surface of optical glass by hot pressing, comprising the following steps:

[0053] Put silicon carbide samples with a diameter of φ10mm and a height of 2.5mm into beakers filled with absolute ethanol and deionized water for ultrasonic cleaning for 3-5min, and blow dry with a hair dryer for later use;

[0054] Place the silicon carbide sample on the Z platform, focus the picosecond laser beam vertically on the surface, import the micro-groove design parameters into the control software in the computer, and set the picosecond laser processing parameters according to the processing requirements. The frequency used is 50kHz, the laser power is 2W, and the scanning speed is 3000mm / s. The micro-groove structure is processed on the surface by the method of scanning multiple times line by line. For details, see figure 2 As shown, the size of the processed silicon carbide sample substrate with a micro...

Embodiment 2

[0059] The invention provides a method for preparing the superhydrophobic functional surface of optical glass by hot pressing, comprising the following steps:

[0060] Put silicon carbide samples with a diameter of φ12mm and a height of 2mm into beakers filled with absolute ethanol and deionized water for ultrasonic cleaning for 3-5min, and dry them with a hair dryer for later use;

[0061] Place the silicon carbide sample on the Z platform, focus the femtosecond laser beam vertically on the surface, import the micro-groove design parameters into the control software, and set the femtosecond laser processing parameters according to the processing requirements. The frequency used in femtosecond laser processing is 50kHz, scanning power of 20w, scanning speed of 200mm / s, and number of scanning layers of 25 to process a fine flow path structure, wherein the fine flow path structure is a rectangular groove with a height of 50 μm and a width of 150 μm, between two adjacent rectangul...

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Abstract

The invention discloses a method for preparing a super-hydrophobic functional surface of optical glass by hot press molding. The method comprises the following steps that a microstructure with micro-nano particles is processed on a silicon carbide surface of a hard alloy material through ultrafast laser, and low surface energy modification is carried out to obtain a microstructure mold with super-hydrophobic performance; then a super-hydrophobic mold prepared by an ultrafast laser processing method is used as a substrate, a microstructure optical element with micro-nano particles is pressed on the surface of the optical glass by adopting a hot press molding method through four processes of carrying out heating, carrying out profiling, carrying out cooling and carrying out annealing, and the optical glass element with the super-hydrophobic functional surface is prepared after low surface energy modification. The method has the advantages of being simple in preparation process, good in hydrophobic surface consistency, efficient, controllable and adjustable in processing, stable in super-hydrophobicity, good in optical performance, low in preparation cost, capable of manufacturing multi-scale optical glass super-hydrophobic functional surfaces with different functional structures on a large scale and the like.

Description

technical field [0001] The invention relates to the technical field of superhydrophobic optical glass surface preparation, in particular to a method for preparing a superhydrophobic functional surface of optical glass by hot pressing. Background technique [0002] Superhydrophobic optical glass is widely used in high-end optical systems such as infrared detection, intelligent guidance, and imaging diffraction in industries such as aerospace, national defense, optoelectronic information, biomedical, transportation, and intelligent robots, as well as glass curtain walls of super high-rise green buildings. Therefore, the study of superhydrophobic glass functional surfaces has become a research hotspot in recent years. The existing superhydrophobic glass surface is generally prepared by coating a layer of superhydrophobic coating on the glass surface, so that the contact angle of water droplets on the glass surface is greater than 150°, and the water droplets do not adhere to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/24B23K26/364C03B23/00C03C17/30
CPCB23P15/24B23K26/364C03B23/0093C03C17/30C03C2217/70C03C2218/111Y02P40/57
Inventor 尹韶辉舒成松李肖杰
Owner HUNAN UNIV
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