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Photochromic material and application thereof

A technology of photochromic materials and dosage ratio, applied in the field of materials, can solve the problems of low discoloration efficiency, waste water pollution, hinder the development of tungsten oxide/molybdenum photochromic materials, etc., and achieve the effect of high discoloration efficiency

Active Publication Date: 2019-10-22
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing tungsten oxide / molybdenum photoluminescent materials generally have low discoloration efficiency and secondary pollution such as waste water during the preparation process, which seriously hinders the development of tungsten oxide / molybdenum photochromic materials

Method used

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  • Photochromic material and application thereof
  • Photochromic material and application thereof
  • Photochromic material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Weigh 0.5g of sodium tungstate and add it to a 250mL beaker containing 150mL of deionized water, and stir for 15 minutes with a magnetic stirrer; weigh 0.6g of disodium edetate and add it to the above mixture, and use an electric heating mantle Heating to 50°C and continuing to stir for 25 minutes to obtain a mixed solution;

[0044] Measure 4mL hydrochloric acid with a 5mL pipette purchased from the market along the beaker wall and slowly add it into a 50mL beaker filled with 16mL deionized water, the pH of the acid solution is 1; weigh 0.15g polyvinylpyrrolidone and add The above acid solution, and continuously stirred with a glass rod until well mixed;

[0045] Transfer the above acid solution to a dropping funnel with a volume of 50mL, fix the dropping funnel above the above 250mL beaker with an iron stand, control the dropping speed to 2 drops / second, and add the acid solution dropwise to the above mixed solution In the process, until the pH value of the above sol...

Embodiment 2

[0051] Weigh 0.2g of sodium tungstate and add it to a 100mL beaker containing 80mL of deionized water, and stir for 15 minutes with a magnetic stirrer; weigh 0.6g of lauroyl glutamic acid and add it to the above mixture, and heat it to Continue stirring at 80°C for 10 minutes to obtain a mixed solution;

[0052] Measure 1.5mL sulfuric acid with a 5mL pipette purchased from the market along the beaker wall and slowly add it into a 25mL beaker containing 8.5mL deionized water, the pH of the acid solution is 1; weigh 0.1g octave Alkyl sodium sulfate is added to the above acid solution, and continuously stirred with a glass rod until it is evenly mixed;

[0053] Transfer the above acid solution to a dropping funnel with a volume of 25mL, fix the dropping funnel above the above 100mL beaker with an iron stand, control the dropping speed to 1 drop / second, and add the acid solution dropwise to the above mixed solution In the process, until the pH value of the above solution is 3, th...

Embodiment 3

[0056] Weigh 0.35g of sodium molybdate into a 250mL beaker containing 100mL of ethanol, and stir for 15 minutes with a magnetic stirrer; weigh 0.5g of cetyltrimethylammonium bromide into the above mixture, and heat it with electricity Heat the jacket to 40°C and continue to stir for 10 minutes to obtain a mixed solution;

[0057] Measure 0.5mL of acetic acid with a commercially available pipette gun with a range of 1mL and slowly add it along the beaker wall into a 25mL beaker containing 9.5mL of deionized water, the pH of the acid solution is 2.5; weigh 0.2g of fatty alcohol Sodium polyoxyethylene ether sulfate is added to the above acid solution, and continuously stirred with a glass rod until it is evenly mixed;

[0058] Transfer the above acid solution to a dropping funnel with a volume of 25mL, fix the dropping funnel above the above 250mL beaker with an iron stand, control the dropping speed to 3 drops / 10 seconds, and add the acid solution dropwise to the above mixing I...

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Abstract

The invention belongs to the field of materials, and particularly relates to a photochromic material and application thereof. The photochromic material is prepared through a method which includes thesteps that (a) tungsten and / or molybdenum source compounds, a surfactant and a solvent are mixed to obtain a first solution, and the surfactant and acid liquor are mixed to obtain a second solution, wherein the surfactant is one or more of lignosulfonate, heavy alkylbenzene sulfonate, alkyl sulfonate, cetyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate, polyvinylpyrrolidone, polyvinyl alcohol, disodium ethylene diamine tetraacetic acid, lauroyl glutamic acid, sodium octadecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate; and (b) the second solution is dropwiseadded into the first solution to obtain the photochromic material. The photochromic material has high color changing efficiency, secondary pollution such as waste water cannot be generated in the preparation process of the photochromic material, and the photochromic material is quite suitable for being applied to the fields of decoration materials, information storing materials, laminated glass and the like.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a photochromic material and its application. Background technique [0002] Photochromic materials refer to the chemical reaction of certain compounds 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. At present, the research on photochromic materials mainly focuses on two categories: organic photochromic materials and inorganic photochromic materials, and inorganic photochromic materials have many advantages such as good thermal stability, high fatigue resistance and non-toxicity. The excellent properties of organic photochromic materials have attracted much attention. [0003] Transition metal oxides are the most studied inorganic photochromic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/00C09K11/68C03C27/12B32B27/30B32B27/06B32B7/08B32B33/00B32B17/10
CPCC09K9/00C09K11/681B32B27/306B32B27/08B32B7/08B32B33/00
Inventor 吴长征杨波谢毅
Owner UNIV OF SCI & TECH OF CHINA
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