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Temperature self-adaptive intelligent window and preparation method thereof

A self-adaptive, smart window technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of high low critical phase transition temperature value, poor sunlight modulation efficiency, slow phase transition rate, etc., and achieves simple preparation method, Good indoor lighting, fast speed effect

Pending Publication Date: 2022-05-27
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many studies on temperature-sensitive hydrogel materials for thermochromic smart windows, most of them have poor sunlight modulation efficiency, high low critical phase transition temperature, low light transmittance before phase transition, and slow phase transition rate. disadvantages, which greatly limit its practical application

Method used

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  • Temperature self-adaptive intelligent window and preparation method thereof
  • Temperature self-adaptive intelligent window and preparation method thereof
  • Temperature self-adaptive intelligent window and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] As an embodiment of a temperature-adaptive smart window of the present invention, the specific implementation process of the temperature-adaptive smart window is as follows:

[0046] (1) Weigh 5.700g N-isopropylacrylamide, 0.033g N,N'-methylenebisacrylamide and 0.020g sodium dodecyl sulfate, dissolve them in 120mL ultrapure water, put the reaction solution in Put it in a 70°C water bath and continue stirring for 1 hour, then dissolve 0.042 g of ammonium persulfate in 10 mL of ultrapure water and add it to the above reaction solution to start the polymerization reaction for 4 hours. After the reaction, it was cooled to room temperature and allowed to stand for a period of time. Then, at room temperature, dialysis and purification, and then air-dried and concentrated to obtain a temperature-sensitive hydrogel with submicron particle size, the mass fraction of the temperature-sensitive hydrogel is 5% of the total solution after dialysis purification and concentration.

[...

Embodiment 2

[0050] As an embodiment of a temperature-adaptive smart window of the present invention, the specific implementation process of the temperature-adaptive smart window is as follows:

[0051] (1) Weigh 5.700g N-isopropylacrylamide, 0.033g N,N'-methylenebisacrylamide and 0.020g sodium dodecyl sulfate, dissolve them in 120mL ultrapure water, put the reaction solution in Put it in a 70°C water bath and continue stirring for 1 hour, then dissolve 0.042 g of ammonium persulfate in 10 mL of ultrapure water and add it to the above reaction solution to start the polymerization reaction for 4 hours. After the reaction, it was cooled to room temperature and allowed to stand for a period of time. Then, at room temperature, dialysis and purification, and then air-dried and concentrated to obtain a temperature-sensitive hydrogel with submicron particle size, the mass fraction of the temperature-sensitive hydrogel is 5% of the total solution after dialysis purification and concentration.

[...

Embodiment 3

[0055] As an embodiment of a temperature-adaptive smart window of the present invention, the specific implementation process of the temperature-adaptive smart window is as follows:

[0056] (1) Weigh 5.700g N-isopropylacrylamide, 0.033g N,N'-methylenebisacrylamide and 0.025g sodium dodecyl sulfate, dissolve them in 120mL ultrapure water, put the reaction solution in Put it in a 70°C water bath and continue stirring for 1 hour, then dissolve 0.042 g of ammonium persulfate in 10 mL of ultrapure water and add it to the above reaction solution to start the polymerization reaction for 4 hours. After the reaction, it was cooled to room temperature and allowed to stand for a period of time. Then, at room temperature, dialysis and purification, and then air-dried and concentrated to obtain a temperature-sensitive hydrogel with submicron particle size, the mass fraction of the temperature-sensitive hydrogel is 5% of the total solution after dialysis purification and concentration.

[...

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Abstract

The invention discloses a temperature self-adaptive intelligent window and a preparation method thereof, and belongs to the technical field of functional materials. The temperature-adaptive intelligent window contains temperature-sensitive hydrogel, and the temperature-sensitive hydrogel comprises the following components in percentage by weight: 1 to 20 percent of temperature-sensitive monomer, 0.001 to 0.1 percent of emulsifier, 0.005 to 0.2 percent of cross-linking agent, 0.01 to 0.5 percent of initiator and the balance of water, wherein the total amount of the temperature-sensitive hydrogel is 100 percent; and the thickness of the temperature-sensitive hydrogel is 1 to 2 mm. The temperature self-adaptive intelligent window shows different light transmittances at different temperatures, the low critical phase transition temperature value of the temperature self-adaptive intelligent window is close to the room temperature, the temperature self-adaptive intelligent window is suitable for being used at the room temperature, and the speed of the light transmittances changing along with the temperature is high.

Description

technical field [0001] The invention relates to a temperature adaptive smart window and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] Due to the increase in population and indoor activities and global climate change, the demand for building functions and indoor air quality increases. Buildings consume more energy than the transportation and industrial sectors. Reducing building energy consumption has a great impact on reducing total energy consumption in society and reducing electricity costs. important meaning. For buildings, reasonable indoor lighting and window layout can effectively avoid unnecessary power lighting and heating consumption, but too much sunlight in summer will cause the indoor temperature to be too high, requiring air conditioners to cool down, which will increase power consumption. In summer, every time the indoor temperature is increased by one degree, the power consumption will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01C08J3/075C08L33/24C08F220/54C08F222/38
CPCG02F1/0147C08J3/075C08F220/54C08J2333/24C08F222/385
Inventor 洪炜张诺
Owner SUN YAT SEN UNIV
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