Pressure-responsive smart glass based on agar film and hydrogel and its preparation method and application

A smart glass and hydrogel technology, applied in the field of pressure-responsive smart glass and its preparation, can solve the problems of cumbersome preparation process, expensive manufacturing cost, complex design, etc., and achieve the effect of convenient use, simple preparation method and good repeatability

Active Publication Date: 2021-06-15
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Disadvantages of the existing technology: the preparation of tunable and complex film surface structures requires complex design, cumbersome preparation process, expensive manufacturing costs, and the inability to achieve large-scale production and application in life; pulling force in people's daily life More complex than pressure application

Method used

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  • Pressure-responsive smart glass based on agar film and hydrogel and its preparation method and application
  • Pressure-responsive smart glass based on agar film and hydrogel and its preparation method and application
  • Pressure-responsive smart glass based on agar film and hydrogel and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0034] Prepare the agar film:

[0035] Add 0.15g of agar powder into the water, heat and stir for 48 hours until the agar is completely dissolved, add the solution dropwise on a glass plate, and place it in a cool place to evaporate naturally to form a film.

[0036] Prepare the hydrogel:

[0037] Add sodium acrylate, N,N-methylenebisacrylamide, and potassium peroxodisulfate into 3ml of water, and sonicate for 30 minutes until completely dissolved into a clear solution. The solution was dripped and dispersed on the glass, and tetramethylethylenediamine was added under nitrogen atmosphere, and the solution quickly polymerized into sodium polyacrylate hydrogel covering the surface of the glass plate, showing high transparency.

[0038] see Figure 3-4 , when no pressure is applied, the hydrogel is not in contact with the agar film, and the uneven surface of the agar film has a diffuse reflection effect on light, thereby blocking the transmission of light and showing an opaque ...

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Abstract

The invention discloses a pressure-responsive smart glass based on agar film and hydrogel, which comprises two glass plates and the agar film and sodium polyacrylate hydrogel respectively attached to the opposite sides of the two glass plates; When pressure is applied, the agar film and the sodium polyacrylate hydrogel do not contact each other, and the glass plates are in an opaque state; when pressure is applied to the two glass plates, the agar film and the sodium polyacrylate hydrogel contact each other and react, so The glass plate changes from an opaque state to a transparent state. The invention also discloses the preparation method and application of the intelligent glass. The smart glass of the present invention can be switched between transparent and opaque by changing the pressure.

Description

technical field [0001] The invention relates to the technical field of smart glass, in particular to a pressure-responsive smart glass based on agar film and hydrogel and its preparation method and application. Background technique [0002] Smart windows with switchable transparency are increasingly used in offices, homes and some public places in real life. The so-called smart windows with switchable transparency refer to changes in transparency caused by external stimuli. In recent years, various stimuli-responsive materials have been applied to the construction of smart glasses in order to achieve such changes in transparency. Previously reported smart glasses respond to external stimuli mainly by changing voltage, temperature or designing complex surface structures. However, most of these smart glasses have defects such as complex preparation process, high cost, and high environmental requirements, which limit their wide application. Therefore, there is an urgent need f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/28
CPCC03C17/28
Inventor 王鑫董彬张慧李洁爱
Owner SUZHOU UNIV
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