Photochromic lens capable of blocking ultraviolet rays, and preparation method and application thereof

A technology of photochromic and ultraviolet rays, which is applied in the field of intelligent color-changing materials and supplies, can solve the problems of unsatisfactory industrial production economy, hindering the development of photochromic lenses, complex technology, etc., to achieve large output, reduce transmittance, The effect of simple process

Active Publication Date: 2019-03-05
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing photochromic lenses have high cost of raw materials and complicated process technology, which cannot meet the req

Method used

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  • Photochromic lens capable of blocking ultraviolet rays, and preparation method and application thereof
  • Photochromic lens capable of blocking ultraviolet rays, and preparation method and application thereof
  • Photochromic lens capable of blocking ultraviolet rays, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Example 1: BiBaO 2 Preparation of Br nanomaterials and surface film photochromic lenses

[0074] Weigh 0.5g of bismuth nitrate into a 50mL three-neck flask filled with 30mL of deionized water, and stir for 5 minutes with a magnetic stirrer; weigh 1g of mannitol into the above mixture, and heat to 100°C with an electric heating mantle; Weigh 0.6g of barium acetate and add to the above mixture, continue to heat and stir for 10 minutes; weigh 1g of disodium ethylenediaminetetraacetate and add to the above mixture, continue to heat and stir for 30 minutes until the solution becomes transparent to obtain the first solution;

[0075] Weigh 0.45g of sodium bromide and add it into a beaker with a volume of 25mL containing 10mL of deionized water, and stir for 15 minutes with a magnetic stirrer equipped with an electric heating mantle until the solution becomes transparent to obtain the second solution;

[0076] Inject the second solution into the first solution with a syringe,...

Embodiment 2

[0082] Example 2: Bi 2 o 3 WO 3 Preparation of Nanomaterials and Preparation of Incorporated Photochromic Lens

[0083] Weigh 0.5g of bismuth nitrate and add it into a three-neck flask with a volume of 50mL containing 30mL of deionized water, and stir for 5 minutes with a magnetic stirrer; weigh 0.5g of mannitol and add it to the above mixture, and heat it to 90°C with an electric heating mantle Weighing 0.8g cetyltrimethylammonium bromide was added to the above mixed solution, and continued heating and stirring for 30 minutes until the solution was transparent to obtain the first solution;

[0084] Weigh 0.2g of sodium tungstate and add it to a 10mL beaker containing 5mL of deionized water, and stir for 15 minutes with a magnetic stirrer equipped with an electric heating mantle until the solution becomes transparent to obtain the second solution;

[0085] Inject the second solution into the first solution with a syringe, and react for 240 seconds in the three-neck flask st...

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Abstract

The invention relates to a photochromic lens capable of blocking ultraviolet rays, and a preparation method and an application thereof. The preparation method comprises the following steps: preparinga photochromic nanometer material which can block ultraviolet rays and has a general formula of MaObXc, wherein M, O, X, a, b and c are as defined in the specification, and mixing the photochromic nanometer material with an optical resin material used for preparing a lens for molding so as to obtain the photochromic lens, or coating the photochromic nanometer material onto the surface of a moldedlens to form a protective layer so as to obtain the photochromic lens. The photochromic lens prepared by using the preparation method provided by the invention can block 80% or more of ultraviolet rays, especially can become a transparent dark color to reduce transmittance when strong light irradiates, and can restore to a colorless transparent state when no strong light irradiates. The preparation method provided by the invention has the characteristics of simple process flow, low cost, large yield, applicability to industrial production, good practical prospects, etc.

Description

technical field [0001] The invention relates to the field of intelligent color-changing materials and articles, in particular to a preparation method of a photochromic lens capable of blocking ultraviolet rays, a photochromic lens and an application thereof. Background technique [0002] Photochromism refers to the chemical reaction of certain compound materials under the action of light of a certain wavelength and intensity, resulting in changes in the structure of the compound, causing the color of the compound to change, after the light is removed or irradiated by another wavelength and intensity of light , the color recovers or a new change occurs. Since the 1950s, when Hirshberg et al. reported the possibility of photochromic application in optical recording and storage, the performance and application of various new photochromic materials have been systematically studied and widely used in building window glass. , color-changing glasses lenses, vehicle window glass, i...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L27/16C08K3/24G02C7/10
CPCG02C7/10G09F3/0294C09K9/00E06B3/30E06B9/24C01B11/00C01B11/20C01B11/22C01G15/00C01G29/00C01G29/006C01G30/00C01G31/006C01G39/00C03C17/002C03C17/009C03C17/22C08J5/18C08J7/04C08K3/16C08K3/22C08K3/24B60J1/00C01P2004/10C01P2004/17C01P2004/16C01P2004/30C03C2217/20C03C2217/29C03C2217/90C03C2218/118C03C2218/11C03C2218/116C08J2369/00C08J2329/14C08J2433/12C08K2201/011E06B2009/2405C08L27/16
Inventor 吴长征杨波谢毅
Owner UNIV OF SCI & TECH OF CHINA
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