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A preparation method for high-strength embedded anti-reflection film on optical plastic surface

A technology of optical plastic and anti-reflection film, which is applied in the direction of pretreatment surface, device for coating liquid on the surface, coating, etc. It can solve the problems of complex film structure and cumbersome operation, and achieve excellent scratch resistance, Strong bending resistance, enhanced bonding effect

Active Publication Date: 2021-07-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent CN201720969074.5 discloses an anti-reflection film lens. The anti-reflection film lens is composed of nine layers of materials from the inside to the outside. Although the structure of the obtained anti-reflection film lens is stable, the film layers are relatively firm, and the scratch resistance is excellent. The mechanical properties are good, but the film structure of this method is complex and the operation is cumbersome

Method used

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  • A preparation method for high-strength embedded anti-reflection film on optical plastic surface
  • A preparation method for high-strength embedded anti-reflection film on optical plastic surface
  • A preparation method for high-strength embedded anti-reflection film on optical plastic surface

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Tetraethyl orthosilicate (Si(OC 2 h 5 ) 4 , TEOS), ethanol (EtOH), ammonia (NH 3 ·H 2 O) According to the molar ratio of 1:40:2, the temperature is about 25°C and the relative humidity is lower than 60%, and the environment is fully stirred for 2 hours, and after standing and aging for 7 days, a light blue latex-like silica sol is obtained, which is refluxed at 80°C Ammonia gas was removed for 24 hours to obtain a stable coating solution.

[0042] Rinse the surface of the base material with absolute ethanol for 5-10s, wipe it with a clean non-woven cloth and blow off the remaining ethanol residue on the surface with nitrogen. In a clean environment with a relative humidity lower than 50%, the antireflection film is plated on a clean polycarbonate (PC) base material by a pulling method.

[0043] Put the petri dish containing chloroform into a closed room temperature box, and volatilize and react in the dark for 30 minutes for later use.

[0044] Finally, the polyca...

Embodiment 2

[0047] The preparation process of silica sol is as described in Example 1.

[0048]Rinse the surface of the base material with absolute ethanol for 5-10s, wipe it with a clean non-woven cloth and blow off the remaining ethanol residue on the surface with nitrogen. In a clean environment with a relative humidity lower than 50%, the anti-reflection film is coated on a clean polymethyl methacrylate (PMMA) substrate by a pulling method.

[0049] Put the petri dish containing chloroform into a closed room temperature box, and volatilize and react in the dark for 30 minutes for later use.

[0050] Finally, the polymethyl methacrylate substrate sample coated with silicon oxide anti-reflection film was stood upright at a distance of 5 cm above the solvent liquid level, and it was subjected to 2h atmosphere treatment under dark conditions. Remove the sample and blow off the residual chloroform gas residue on the surface with nitrogen.

[0051] image 3 After the polymethyl methacryl...

Embodiment 3

[0053] The preparation process of silica sol is as described in Example 1.

[0054] Rinse the surface of the base material with absolute ethanol for 5-10s, wipe it with a clean non-woven cloth and blow off the remaining ethanol residue on the surface with nitrogen. In a clean environment with a relative humidity lower than 50%, the anti-reflection film is coated on a clean polymethyl methacrylate (PMMA) substrate by a pulling method.

[0055] Put the petri dish containing acetone into a closed room temperature box, and volatilize for 30 minutes for later use.

[0056] Finally, the polymethyl methacrylate substrate sample coated with silicon oxide anti-reflection film was stood upright at a distance of 4 cm directly above the solvent liquid level, and it was subjected to 2h atmosphere treatment. Remove the sample and blow off the residual acetone gas residue on the surface with nitrogen. High-strength embedded sol-gel polymethyl methacrylate surface anti-reflection film has g...

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Abstract

The invention relates to a method for preparing a high-strength embedded anti-reflection film on the surface of optical plastics, which specifically includes the following steps: (1) washing and purging the optical plastic base material in a clean environment to obtain a clean optical plastic base material; (2) under a clean environment, the surface of the clean optical plastic base material obtained in step (1) is coated with a uniform anti-reflection film to obtain an optical plastic coated with an anti-reflection film; (3) using a volatile organic solvent, Atmosphere treatment is carried out to the optical plastic plated with the anti-reflection film prepared in step (2). Compared with the existing technology, the present invention greatly improves the bonding force between the film and the substrate interface while maintaining the original excellent optical transmission performance, greatly improves the mechanical properties, and the depth of the anti-reflection film embedded in the optical plastic surface can be flexibly adjusted according to requirements , the plated anti-reflection film can be directly prepared on a large-area substrate through a simple operation method, and it is easy to realize low-cost, large-scale industrial production.

Description

technical field [0001] The invention relates to a method for preparing an optical thin film, in particular to a method for preparing a high-strength embedded anti-reflection film on the surface of optical plastics. Background technique [0002] Compared with glass substrates, optical plastic substrates have the advantages of being cheaper, lighter, flexible and less fragile, so they can be widely used in electronic equipment, photovoltaic equipment, and spectacle lenses. Since most of the plastic substrates (such as PC, PMMA, etc.) have extremely poor heat resistance, the anti-reflection film applied on the plastic substrate needs to be prepared at low temperature. Among many coating methods, the preparation process of sol-gel technology does not require high temperature, and the refractive index of the coated film is controllable and suitable for large-scale irregular-shaped coatings, so it can be used for mass production of anti-reflective coatings for multifunctional flex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/00B05D1/02B05D1/30B05D3/00B05D7/04B05D7/24G02B1/11
Inventor 王晓栋赵慧月沈军苏怡璇
Owner TONGJI UNIV
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