Ultraviolet screen nano-coating liquid for eyeglass and preparation thereof

A coating solution and ultraviolet technology, applied in the field of lens ultraviolet shielding nano coating solution and its preparation, achieves the effects of excellent light transmittance, strong ability to scatter ultraviolet rays, and uniform film layer

Active Publication Date: 2011-06-08
SCHOOL OF OPHTHALMOLOGY & OPTOMETRY WENZHOU MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current ultraviolet shielding agent, whether it is an inorganic compound or an organic compound ultraviolet shielding agent, can only effectively shield ultraviolet rays with a wavelength below 380nm at most.

Method used

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  • Ultraviolet screen nano-coating liquid for eyeglass and preparation thereof
  • Ultraviolet screen nano-coating liquid for eyeglass and preparation thereof
  • Ultraviolet screen nano-coating liquid for eyeglass and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 500ml of 0.1mol L -1 Surfactant cetylamine solution, add 500ml 0.5mol L -1 ethanol and 200ml stabilizer (wherein 100ml of 0.2mol L -1 Ammonium acetate solution, 100ml of 0.3mol L -1 glycerol solution), after mixing evenly, the control stirring speed is 3000 rev / min and 5 hours of reaction time, and then add 60 grams of anatase nanomaterial TiO 2-x N x (x=0.1 -1 , (x is substituted with specific numerical values) mainly replaced by nitrogen), stirred for 60 minutes, then vibrated with an ultrasonic instrument for 30 minutes, and finally filtered with a filter membrane with a pore size of 100nm to obtain a lens coating solution.

Embodiment 2

[0023] Weigh 400ml of 0.5mol L -1 Surfactant dodecylamine solution, add 400ml 0.2mol L -1 propanol and 300ml stabilizer (of which 150ml of 0.4mol L -1 Ammonium citrate solution, 150ml of 0.1mol L -1 liquid polyethylene glycol solution), after mixing uniformly, the control stirring speed was 6000 rev / min and 3 hours of reaction time, and then added 33 grams of anatase nano-material Ti. 2-x N x (x=0.1-1, mainly replaced by nitrogen), stirred for 40 minutes, then oscillated with an ultrasonic instrument for 20 minutes, and finally shielded with a shielding film with an aperture of 100nm to obtain a lens coating solution.

Embodiment 3

[0025] Weigh 600ml of 0.3mol L -1 Surfactant tetradecylamine solution, add 400ml 0.7mol L -1 ethanol and 500ml stabilizer (250ml of 0.4mol L-1 Ammonium citrate solution, 250ml of 0.1mol L -1 glycerol solution), after mixing evenly, the control stirring speed is 7000 rpm and 6 hours of reaction time, and then add 120 grams of anatase nano-material TiO 2-x N x (x=0.1-1, mainly replaced by nitrogen), after stirring for 20 minutes, oscillate with an ultrasonic instrument for 40 minutes, and finally shield with a shielding film with an aperture of 100nm to obtain a lens coating solution.

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Abstract

The invention relates to a nanometer coating liquid coated on lens for shielding ultraviolet and a preparation method thereof. The coating liquid consists of a solvent, a surfactant, a fast evaporation agent, a nano material and a stabilizer of the nano material, wherein, the nano material is TiO<2-x>N<x> anatase nano material replaced by nitrogen and x equals to 0.1 to 1; the surfactant is one of or the mixture of two of stearylamine, hexadecyl amine, tetradecylamine or lauryl amine; the fast evaporation agent is one of or the mixture of two of methanol, ethanol, propanol or ethyl propanol; the stabilizer of the nano material is one of or the mixture of two of citric acid ammonia, acetic acid ammonia, glycerol and liquid polyethylene glycol. The invention adopts the lens coating liquid prepared by the TiO<2-x>N<x> anatase nano material (x equals to 0.1 to1, mainly replaced by nitrogen), thus having the advantages of even distribution of nano particles, good stability and no sedimentation. As the preparation is carried out at normal pressure and room temperature, the method has the advantages of less energy consumption and simple technique; the lens coating liquid has good coatingeffect and excellent light transmittance and can well shield the ultraviolet with the wavelength between 380nm and 400nm.

Description

technical field [0001] The invention relates to a coating agent for glass or lenses, in particular to a lens ultraviolet shielding nano-coating solution and a preparation method thereof. Background technique [0002] In the light radiated by the sun, there are about 5% of ultraviolet rays with a wavelength of <400nm. Ultraviolet rays in sunlight can be divided according to their wavelengths: long-wave ultraviolet rays with a wavelength of 320mn to 400mn, called A-type ultraviolet rays (UVA); medium-wave ultraviolet rays with a wavelength of 290mn to 320mn, called B-type ultraviolet rays (UVB) and Short-wave ultraviolet rays with a wavelength of 200nm to 290nm are called type C ultraviolet rays (UVC). Because the wavelength of ultraviolet rays is very short, the energy is quite high, and its destructive power is very large. In recent years, the damage of ultraviolet rays to human eyes has attracted more and more attention. The damage of ultraviolet rays to the human eye ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/00C03C17/22
Inventor 瞿佳魏坤陈浩王媛媛
Owner SCHOOL OF OPHTHALMOLOGY & OPTOMETRY WENZHOU MEDICAL COLLEGE
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