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Heat/electric responding gel color changing glass material

A color-changing glass and responsive technology, which is applied in the field of thermal/electrically responsive gel color-changing glass materials, can solve the problems of easy volatilization, affecting operation stability and life, and easy leakage of water-soluble color-changing materials, so as to increase responsiveness, Effect of improving temperature controllability

Active Publication Date: 2016-12-07
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing color-changing glass materials are often limited to only one kind of environmental change to change the optical properties. At the same time, water-soluble color-changing materials are easy to leak and volatilize, which affects their operational stability and life.

Method used

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  • Heat/electric responding gel color changing glass material
  • Heat/electric responding gel color changing glass material
  • Heat/electric responding gel color changing glass material

Examples

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preparation example Construction

[0023] , , , , , , and One or a mixture of several components, Z in the formula 1 ,Z 2 ,Z 3 ,Z 4 ,Z 5 ,Z 6 ,Z 7 and Z 8 Each independently is an alkyl group with 1 to 12 carbon atoms, Y – for Cl – 、Br – , I – , NO 3 – , SO 4 2– 、PO 4 3– , OH – or TFSI – (bistrifluoromethanesulfonylimide ion). Its preparation method includes the following steps: (a) combining 4,4'-bipyridine with allyl bromide, methallyl bromide, acryloyl chloride, methacryloyl chloride, vinylbenzyl chloride, methylvinylbenzyl Vinyl compounds such as chlorine, p-vinylbenzoyl chloride or p-vinylmethylbenzoyl chloride are placed in an acetonitrile solution and reacted at 40-65°C for 5-10 hours, and the acetonitrile is removed by standing and layering (4, The molar ratio of 4'-bipyridine to vinyl compounds is 1:2~1:3); (b) The product of step (a) can be washed several times with ether.

[0024] The molar ratio of the thermoresponsive monomer to the crosslinking agent is 100-50:1...

Embodiment 1

[0028] This embodiment provides a thermal / electrical responsive gel color-changing glass material, and its preparation method includes the following steps:

[0029] (a) Mix 0.25g N-isopropylacrylamide (2.2mmol), 0.002g 4,4'-diallylbipyridine (0.002mmol), 0.002g ammonium persulfate (APS) and 0.004g tetramethylethyl Diamine (TEMED), dissolved in a mixed solvent composed of 0.8mL 1-methyl-3-butylimidazolium bromide and 0.2mL water, oscillating and stirring to make a homogeneous transparent solution;

[0030] (b) Transfer the homogeneous transparent solution obtained in step (a) into a 3mL ampule bottle, bubble with nitrogen for 10 minutes, then place it at 20°C for 30 minutes to polymerize, and take the obtained polymer gel out of the ampule bottle ;

[0031] (c) Spread gel1-1 evenly between two pieces of ITO glass for encapsulation.

[0032] Through UV-vis (ultraviolet-visible absorption spectrum) test and CV (cyclic voltammetry) test, the color-changing glass material is milk...

Embodiment 2

[0034] This embodiment provides a thermal / electrical responsive gel color-changing glass material, and its preparation method includes the following steps:

[0035] (a) Mix 0.25g N-isopropylacrylamide (2.2mmol), 0.002g 4,4'-diallylbipyridine (0.002mmol), 0.002g ammonium persulfate (APS) and 0.004g tetramethylethyl Diamine (TEMED), dissolved in 0.6mL 1-methyl-3-butylimidazolium bromide salt and 0.4mL water mixed solvent, shake and stir to make a uniform transparent solution;

[0036] (b) Transfer the homogeneous transparent solution obtained in step (a) into a 3mL ampule bottle, and polymerize at 20°C for 30 minutes; take the obtained polymer out of the ampule bottle.

[0037] (c) Spread gel1-2 evenly between two pieces of ITO glass for encapsulation.

[0038] Through UV-vis (ultraviolet-visible absorption spectrum) test, CV (cyclic voltammetry) test, the color-changing glass material is higher than 25 o C is milky white, and it is transparent when it is lower than 25°C; it i...

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Abstract

The invention relates to a heat / electric responding hydrogel color changing glass material based on ionic liquid modification. The material is obtained by dissolving a heat responding monomer, an ionic liquid, a crosslinking agent, an initiator, and a catalyst into water to carry out polymerization; wherein the heat responding monomer is a mixture composed one or more of N-isopropyl acrylamide, N-tert-butyl acrylamide, and N-vinyl caprolactam. The chemical structural formula of the ionic liquid is shown in the description, in the formula, R1, R2, and R3 independently represent a C1-C8 alkyl group, and X<-> represents Cl<->, Br<->, I<->, NO3<->, SO4<2->, PO4<3->, or OH<->. The crosslinking agent is divinyl purpurine derivatives. Through the technical scheme mentioned above, a heat / electric responding hydrogel color changing glass material can be obtained; the responding property to the change of environmental conditions is enhanced, and the temperature controllability, stability, and service life of color changing devices are all improved.

Description

technical field [0001] The invention relates to a gel color-changing glass material, in particular to a heat / electricity responsive gel color-changing glass material. Background technique [0002] Color-changing glass materials have a good reversible adjustment of optical properties, intelligently achieve the purpose of suitable lighting, energy saving and environmental protection, and are more and more widely used in architectural window glass. Among them, the application research of thermochromic and electrochromic materials is relatively extensive. Water-soluble green and environmentally friendly color-changing materials are undoubtedly a beneficial attempt to study environmentally friendly smart windows because of their advantages such as low preparation cost, convenient operation, energy saving and environmental protection. Therefore, the research on environmentally friendly color-changing materials with multifunctionality and good operational stability has attracted p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/54C08F226/06C08F222/38C08F212/34C08F2/04C08F2/06C08F2/10
CPCC08F2/04C08F2/06C08F2/10C08F220/54C08F226/06C08F222/385C08F212/34
Inventor 严锋陈飞
Owner SUZHOU UNIV
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