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A rapid preparation method of gel photonic crystal

A photonic crystal, fast technology, applied in sustainable manufacturing/processing, chemical industry, climate sustainability, etc., can solve the problems of long preparation time and complex process, and achieve the effect of improving yield

Inactive Publication Date: 2018-03-02
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a rapid preparation method of a gel photonic crystal that can overcome the problems of long preparation time and complicated process in the prior art

Method used

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  • A rapid preparation method of gel photonic crystal

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Effect test

Embodiment 1

[0026] The invention discloses a rapid preparation method of gel photonic crystals. The rapid preparation method comprises the following steps:

[0027] (1) Disperse 50 grams of styrene in 150 grams of water, prepare an emulsion with a mass fraction of 25%, raise the temperature of the emulsion to 90°C, then add 1 gram of potassium persulfate, and react for 1 hour to obtain polystyrene Ethylene nanoparticle suspension;

[0028] (2) 20 grams of polyvinyl alcohol and 10 grams of polyethylene glycol were added to the polystyrene nanoparticle suspension, the temperature was controlled at 90° C., and reflux was carried out for 1 hour to obtain a polyvinyl alcohol / polyethylene glycol pregel;

[0029] (3) Add a mixed bed resin with a cation-to-anion ratio of 1:2 into the polyvinyl alcohol / polyethylene glycol pregel, cool down to 50°C, and purify for 6 hours to obtain a photonic crystal pregel;

[0030] (4) Inject the photonic crystal pregel into the mold with a micro-syringe, seal t...

Embodiment 2

[0032] The invention discloses a rapid preparation method of gel photonic crystals. The rapid preparation method comprises the following steps:

[0033] (1) Disperse 60 grams of methyl methacrylate in 150 grams of water to prepare an emulsion with a mass fraction of 28.5%, raise the temperature of the emulsion to 90°C, then add 1 gram of ammonium persulfate, and react for 1 hour Obtain polymethyl methacrylate nanoparticle suspension;

[0034] (2) Add 20 grams of polyvinyl alcohol and 10 grams of polyethylene glycol into the suspension of polymethyl methacrylate nanoparticles, control the temperature at 90 ° C, and reflux for 1 hour to obtain polyvinyl alcohol / polyethylene glycol pre-coagulation glue;

[0035] (3) Add the mixed-bed resin with a cation-to-anion ratio of 1:5 into the polyvinyl alcohol / polyethylene glycol pregel, cool down to 50°C, and purify for 6 hours to obtain the photonic crystal pregel;

[0036] (4) Inject the photonic crystal pregel into the mold with a m...

Embodiment 3

[0038] The invention discloses a rapid preparation method of gel photonic crystals. The rapid preparation method comprises the following steps:

[0039] (1) Disperse 50 grams of styrene in 150 grams of water, prepare an emulsion with a mass fraction of 25%, raise the temperature of the emulsion to 90°C, then add 1 gram of ammonium persulfate, and react for 1 hour to obtain polyphenylene Ethylene nanoparticle suspension;

[0040] (2) Add 40 grams of polyurethane to the polystyrene nanoparticle suspension, control the temperature at 90° C., and reflux for 1 hour to obtain a polyurethane pregel;

[0041] (3) Add a mixed-bed resin with a cation-to-anion ratio of 1:3 into the polyurethane pregel, cool down to 50°C, and purify for 6 hours to obtain a photonic crystal pregel;

[0042] (4) Inject the photonic crystal pre-gel into the mold with a micro-syringe, seal the mold and put it in an oven at 60°C to cure for 2 hours, then the mold can be demolded to obtain a polyurethane gel p...

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Abstract

The invention discloses a fast preparing method of a gel photon crystal. The fast preparing method comprises the following steps: (1) dispersing a monomer in water to prepare emulsion with a mass percent of 15-30 percent, heating the emulsion to 90 DEG C, then adding an initiator with a mass percent of 0.5-2 percent, and reacting for 0.5-2h to prepare nano particle suspension; (2) adding a high molecular material into the nano particle suspension, controlling the temperature at 90 DEG C, and reflowing for 1-2h to obtain high molecular pregel; (3) adding resin exchange resin into the high molecular pregel, cooling the temperature to 50 DEG C, and performing purification for 2 to 10 hours to obtain a photon crystal pregel; (4) adding the photon crystal pregel into a syringe, injecting into a die, sealing the die, then placing in an environment of -20-0 DEG C for freezing for 2-24h, and then unfreezing in an environment of 20-25 DEG C for 0.5-1h or curing in an oven of 60 DEG C for 2h, and demoulding to obtain the gel photon crystal. The preparing method can improve the yield of the gel photon crystal and achieves economic, energy-saving and environment protecting effects.

Description

technical field [0001] The invention relates to the technical field of photonic crystals, in particular to a rapid preparation method of gel photonic crystals. Background technique [0002] Photonic crystal is a structure with periodic modulation of dielectric constant, which is characterized by a photonic band gap. When the electromagnetic wave propagates in the periodic structure, the wave whose frequency matches the photonic forbidden band will be controlled; according to this characteristic of the photonic crystal, different periodic structures can be designed to realize the control of the propagation mode of the electromagnetic wave. This kind of material It has a wide range of applications in optical circuits, communication sensing, optical storage and other fields; when the forbidden band of photonic crystal materials is in the visible light range, the materials can present bright structural colors macroscopically, which can be applied to laser devices and structural ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075
CPCC08J3/075C08J2325/06C08J2333/12C08J2429/04C08J2471/02C08J2475/04Y02P20/10
Inventor 陈诚朱志刚
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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