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Silicon dioxide anti-reflection film for surface ultrafast hydrophobic treatment and preparation method thereof

A silica and hydrophobic treatment technology, applied in optics, instruments, optical components, etc., to achieve the effects of easy operation, improved abrasion resistance, and simple process

Inactive Publication Date: 2013-01-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The primary purpose of the present invention is to aim at the defects existing in the existing sol-gel method silica anti-reflection film, and provide a kind of anti-reflection film with good abrasion resistance and good environmental resistance after superfast hydrophobic treatment on the surface. Silica AR Coating

Method used

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  • Silicon dioxide anti-reflection film for surface ultrafast hydrophobic treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) First, add absolute ethanol (analytical grade), deionized water, ammonia water and tetraethyl orthosilicate (analytical grade) into the reaction vessel in sequence at a molar ratio of 1:3.25:37.6:0.17, and react at a constant temperature at 25°C After 2 h, it was taken out, then placed in a closed glass container, and aged in a constant temperature water bath at 30°C for 9 days for later use. The mass concentration of silica in the obtained silica sol was 3%.

[0022] (2) Immerse the washed and dried K9 glass in silica sol, and use the dipping-pulling method to cover the surface of K9 glass with a flat layer of silica sol at a pulling speed of 100 mm / min, and then place it on the Heat treatment at 160 °C for 8 h, and then naturally cool to room temperature to obtain the silica anti-reflection coating.

[0023] (3) Add hydrogen-containing silicone oil with a hydrogen content of 1.5% and Kastredt catalyst to n-hexane at room temperature and mix evenly to obtain a sur...

Embodiment 2

[0026] Since the process conditions for preparing the silicon dioxide anti-reflection coating in steps (1) and (2) of this embodiment are the same as those in Embodiment 1, they are omitted here.

[0027] (3) Add hydrogen-containing silicone oil with a hydrogen content of 1.5% and Kastredt catalyst to n-hexane at room temperature and mix evenly to obtain a surface treatment agent. The mass percentage concentration of hydrogen-containing silicone oil in the surface treatment agent is 0.5%, and Kastredt The concentration of catalyst is 100ppm by the mass of hydrogen-containing silicone oil;

[0028] (4) After immersing the obtained silica AR coating in the surface treatment agent for 2 minutes, pull it away from the surface treatment agent at a speed of 100 mm / min, and then heat and dry it at 120°C for 120 minutes.

Embodiment 3

[0030] Since the process conditions for preparing the silicon dioxide anti-reflection coating in steps (1) and (2) of this embodiment are the same as those in Embodiment 1, they are omitted here.

[0031] (3) Add hydrogen-containing silicone oil with a hydrogen content of 1.5% and Kastredt catalyst to n-hexane at room temperature and mix evenly to obtain a surface treatment agent. The mass percentage concentration of hydrogen-containing silicone oil in the surface treatment agent is 2.5%, and Kastredt The concentration of catalyst is 250ppm by the mass of hydrogen-containing silicone oil;

[0032] (4) After immersing the obtained silica AR coating in the surface treatment agent for 5 minutes, pull it away from the surface treatment agent at a speed of 50 mm / min, and then heat and dry it at 200 °C for 180 minutes.

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Abstract

The invention discloses a silicon dioxide anti-reflection film for surface ultrafast hydrophobic treatment. The silicon dioxide anti-reflection film is characterized in that the peak transmittance drop-out valve of the anti-reflection film which is subjected to the surface ultrafast hydrophobic treatment is 0.21-0.61 percent; after the anti-reflection film which is subjected to the surface ultrafast hydrophobic treatment is scrubbed by ethanol-stained absorbent cotton for 30 times, the surface has slight scratches or no scratches; the rise value of a contact angle is 71.7-72.2; and after the silicon dioxide anti-reflection film is placed in an oil-containing atmosphere formed by dimethyl silicone oil volatilization for one week, the drop-out value of the peak transmittance of the silicon dioxide anti-reflection film is 0.22-0.81. The invention also discloses a preparation method of the silicon dioxide anti-reflection film. The silicon dioxide anti-reflection film provided by the invention has the advantages of not only simultaneously improving the wear resistance and the environment resistance but also having no influence on the transmittance of the peak value basically, and can be widely applied to the fields such as a strong laser system, a solar battery and a solar heat collection pipe. The method has the advantages of quick treatment process, simple process, easiness in operation and high easiness for realizing large-scale application in industry.

Description

technical field [0001] The invention belongs to the technical field of silicon dioxide anti-reflection film treated with surface hydrophobicity and its preparation technology, and in particular relates to a silicon dioxide anti-reflection film with ultrafast surface hydrophobic treatment and a preparation method thereof. Background technique [0002] The sol-gel silicon dioxide anti-reflection coating is usually coated by alkali-catalyzed hydrolysis of tetraethyl orthosilicate to form a layer of silicon dioxide particles randomly accumulated on the surface of the optical glass. Since the pores between silica particles can reduce the refractive index of the anti-reflection coating, making the refractive index close to the square root of the refractive index of optical glass, so 100% anti-reflection can be achieved for optical glass. However, the sol-gel silicon dioxide anti-reflection coating is formed by simple accumulation of polar silicon dioxide particles, and the particl...

Claims

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Application Information

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IPC IPC(8): C03C17/23G02B1/11G02B1/113
Inventor 江波张欣向夏碧波张雨露
Owner SICHUAN UNIV
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