A kind of lens long-acting anti-fog silicon-based gel anti-fog agent and its preparation method and application

Abstract

The invention relates to a long-acting anti-fog silicon-based gel anti-fog agent for lenses and its preparation method and application. The anti-fog agent is composed of a silicon-based sol solution and a long-chain polysaccharide / amino molecule cross-linking solution, wherein: the silicon-based sol The solution includes: tetraethyl orthosilicate, cyclopentasiloxane, polydimethylsiloxane crosslinked polymer, organic solvent; the long-chain polysaccharide / amino molecule crosslinking solution includes: deionized water, Polysaccharide molecule, polyvinyl alcohol, amino molecule surfactant, photocatalytic attachment agent cerium oxide. The silica sol in this anti-fog sol is cross-linked with hydrophilic polysaccharide molecules and amino molecules to form a core-shell structure with a rigid center and a soft long chain, which promotes water droplets to spread evenly and rapidly throughout the surface through capillary action, achieving moisture absorption and anti-fog effects , long-chain polysaccharide / amino molecules are used as end-capping agents to inhibit the volatilization of surfactants, and cerium oxide is introduced to increase the surface adsorption of silica sol, so as to overcome the problem of poor light transmission caused by poor adhesion of the original water-based anti-fog coating.

Description

technical field [0001] The invention belongs to the technical field of surface coating modification materials, and in particular relates to a long-acting anti-fog silicon-based gel anti-fog agent for lenses, a preparation method and application thereof. Background technique [0002] The pneumonia epidemic caused by the new coronavirus that broke out at the end of 2019 has led to an extreme shortage of medical resources and protective materials. At the same time, the transmission route and mechanism of the virus have not been fully revealed, resulting in the need for long-term wear of masks and goggles by medical staff and on-duty personnel fighting on the front line. and protective clothing. The current commercial goggles with anti-fog performance are prone to fogging after continuous use for more than 1 hour, affecting the visual function of the user to varying degrees, and in severe cases, causing the user to lose sight and lose working ability. Feedback from medical staf...

AI Technical Summary

Problems solved by technology

[0002] The pneumonia epidemic caused by the new coronavirus that broke out at the end of 2019 has led to an extreme shortage of medical resources and protective materials. At the same time, the transmission route and mechanism of the virus have not been fully revealed, resulting in the need for long-term wearing of masks and goggles by medical staff and on-duty personnel fighting on the front line. and protective clothing

Because of the relatively confined space, the nanoparticles in the anti-fog film on the surface of the goggles will be inhaled by the respiratory tract and deposited in the lungs, resulting in lung fibrosis or petrification; or they can freely pass through the cell membrane through the skin to interact with human proteins, bacteria and viruses. Very high risk of inducing underlying disease

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