Preparation method and application of photochromic building window capable of blocking ultraviolet light

Abstract

The invention relates to a preparation method and application of a photochromic building window capable of blocking ultraviolet light. The method comprises the steps that a photochromic nano materialcapable of blocking the ultraviolet light of which the general formula is MaObXc is prepared, wherein M, O, X, a, b and c are defined in the description, a layer of film made from a photochromic material adheres to the surface of a common building window by adopting the photochromic nano material, or the photochromic nano material and a building window material are mixed and formed to prepare thephotochromic building window. The preparation method and application of the photochromic building window capable of blocking the ultraviolet light have the advantages that the photochromic building window can block more than 80% of ultraviolet light, particularly, the photochromic building window can become transparent and dead during strong light irradiation, thereby reducing the transmittance; the photochromic building window can also be restored to be in a colorless and transparent state in the absence of bright light irradiation; the technological process is simple, the cost is low, the yield is large, the preparation method is suitable for industrial manufacture, and the practical prospect is better.

Description

technical field

[0001] The invention relates to the field of intelligent color-changing materials, in particular to a preparation method of a photochromic building window capable of blocking ultraviolet rays, a photochromic building window and applications 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 g...

Examples

Embodiment 1

[0084] Example 1: BiBaO 2 Preparation of Br nanomaterials and film-type photochromic building windows

[0085] 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;

[0086] 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;

[0087] Inject the second solution into the first solution with a s...

Embodiment 2

[0093] Example 2: Sb 4 o 5 Cl 2 Preparation of nanomaterials and preparation of film-type photochromic building windows

[0094] Weigh 0.8g of antimony chloride 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 xylitol and add it to the above mixture, and heat it with an electric heating mantle to 150°C; weigh 1g of polyvinylpyrrolidone and add it to the above mixture, continue heating and stirring for 15 minutes until the solution becomes transparent, and obtain the first solution;

[0095] Weigh 0.2g of sodium chloride and add it into a beaker with a volume of 10mL containing 3mL of oleic acid, and stir for 25 minutes with a magnetic stirrer equipped with an electric heating mantle until the solution appears transparent to obtain the second solution;

[0096] Inject the second solution into the first solution with a syringe, and react for 80 seconds in the three-neck f...

Embodiment 3

[0101] Example 3: Bi 2 o 3 WO 3 Fabrication of nanomaterials Fabrication of integrated photochromic building windows

[0102]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;

[0103] 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;

[0104] Inject the second solution into the first solution with a syringe, and react for 240 seconds in the three-neck fla...

technical field

[0001] The invention relates to the field of intelligent color-changing materials, in particular to a preparation method of a photochromic building window capable of blocking ultraviolet rays, a photochromic building window and applications 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 g...

Examples

Embodiment 1

[0084] Example 1: BiBaO 2 Preparation of Br nanomaterials and film-type photochromic building windows

[0085] 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;

[0086] 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;

[0087] Inject the second solution into the first solution with a s...

Embodiment 2

[0093] Example 2: Sb 4 o 5 Cl 2 Preparation of nanomaterials and preparation of film-type photochromic building windows

[0094] Weigh 0.8g of antimony chloride 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 xylitol and add it to the above mixture, and heat it with an electric heating mantle to 150°C; weigh 1g of polyvinylpyrrolidone and add it to the above mixture, continue heating and stirring for 15 minutes until the solution becomes transparent, and obtain the first solution;

[0095] Weigh 0.2g of sodium chloride and add it into a beaker with a volume of 10mL containing 3mL of oleic acid, and stir for 25 minutes with a magnetic stirrer equipped with an electric heating mantle until the solution appears transparent to obtain the second solution;

[0096] Inject the second solution into the first solution with a syringe, and react for 80 seconds in the three-neck f...

Embodiment 3

[0101] Example 3: Bi 2 o 3 WO 3 Fabrication of nanomaterials Fabrication of integrated photochromic building windows

[0102]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;

[0103] 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;

[0104] Inject the second solution into the first solution with a syringe, and react for 240 seconds in the three-neck fla...

Images