Anti-fog resin lens with hydrophilic factors in surface film layer and preparation method of anti-fog resin lens

Abstract

The invention discloses an anti-fog resin lens with hydrophilic factors in a surface film layer. The anti-fog resin lens is composed of a resin substrate, a hardened storage grid film layer and a hydrophilic factor slow-release anti-fog film layer. The anti-fog resin lens is characterized in that the hardened storage grid film layer is printed on the surface of the resin substrate; and the outside of the hardened storage grid film layer is coated with the hydrophilic factor slow-release anti-fog film layer to form a hydrophilic factor slow-release anti-fog film layer. According to the anti-fog resin lens, an anti-fog coating is stored when the hardness of the surface of the resin lens is ensured; the release time of the hydrophilic factors in the anti-fog coating is retarded; and the targets that the lens has friction and scratch resistance and long-acting anti-fog effect are reached.

Description

technical field [0001] The invention relates to the technical field of production and application of special anti-fog lenses, in particular to an anti-fog resin lens with a surface film layer storing hydrophilic factors and a production method thereof. Background technique [0002] The glasses that people wear need to avoid fogging. The white fog formed on the surface of the lens will seriously block the line of sight and affect the wearer's observation of external things. For a long time, people have designed a variety of solutions to solve the problem of fogging on the lens surface. However, the anti-fog lens itself is required to have a good anti-fog effect while maintaining the original hardness of the lens and other comprehensive performance and optical indicators. For example: in order to prevent the surface of the lens from being scratched and worn during use The wool maintains good transparency and clarity for a long time. During production, the surface of the lens i...

AI Technical Summary

Problems solved by technology

[0002] The glasses that people wear need to avoid fogging. The white fog formed on the surface of the lens will seriously block the line of sight and affect the wearer's observation of external things. For a long time, people have designed a variety of solutions to solve the problem of fogging on the lens surface. However, the anti-fog lens itself is required to have a good anti-fog effect while maintaining the original hardness of the lens and other comprehensive performance and optical indicators. For example: in order to prevent the surface of the lens from being scratched and worn during use The wool maintains good transparency and clarity for a long time. During production, the surface of the lens is dip-coated with a layer of silicon dioxide plus a hard coat layer and heated and cured, so that the surface hardness of the lens is increased by 6-8H from the 5H of the base film. It is hard and wear-resistant. The service life of the glasses is guaranteed, but this hardened layer is not hydrophilic and cannot achieve anti-fog effect. If the lens is required to be anti-fog, a layer of hydrophilic paint must be applied on the surface of the lens to produce an anti-fog effect. At present, the hardness of hydrophilic anti-fog coatings in the domestic and foreign markets is generally low after curing. For example, the surface hardness of the melamine 680G anti-fog coating produced in the United States only reaches 2-3H after the lens is treated, and the coating will appear when exposed to water. Swelling, further decrease in hardness, and the film layer on the surface of the lens will become fluffy as soon as it is wiped; the UV curing hydrophilic anti-fog coating produced by domestic manufacturers has a surface hardness of only 1.5-3H after light curing, which cannot reach the surface hardness of the lens not less than 6H. The national standard cannot guarantee the normal service life. At the same time, when the surface of the lens encounters water or fog, various hydrophilic substances contained in the hydrophilic anti-fog coating such as: polyvinyl alcohol, polyethylene glycol, glycerol Hydrophilic factors such as amines, various surfactants or acrylics are very easy to combine with water and penetrate into water, resulting in the reduction of anti-fog effect or the loss of anti-fog effect of the lens. It is prepared by organic / inorganic hybrid sol-gel method In theory, the anti-fog coating has a compromise between the hardness and hydrophilicity of the anti-fog coating, but in actual production and use, it is difficult to achieve high surface hardness while maintaining good long-term hydrophilicity due to various reasons. , the market has not yet seen or purchased lens anti-fog coatings with good hardness and long-term hydrophilicity. Products that can really take into account the comprehensive performance of anti-fog lenses have not yet officially come out and put on the market. How to solve this contradiction, Meeting customers' long-term anti-fog needs for glasses is an important research topic that needs to be carefully considered and solved by the R&D personnel of our glasses manufacturer.

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