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Method for preparing colloidal crystal by emulsion suspension

A technology of colloidal crystals and emulsions, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems of complex equipment, complex operation, low coating efficiency, etc., to achieve improved surface uniformity, simple preparation process, and high efficiency high effect

Inactive Publication Date: 2018-01-19
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have their inherent disadvantages, mainly: the operation is relatively complicated, or complex equipment is required, and the utilization rate of raw materials is not high, which is easy to cause waste, and the coating efficiency is very low

Method used

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  • Method for preparing colloidal crystal by emulsion suspension
  • Method for preparing colloidal crystal by emulsion suspension
  • Method for preparing colloidal crystal by emulsion suspension

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Experimental program
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Effect test

Embodiment 1

[0019] Such as figure 1 Shown, the present invention provides a kind of emulsion suspension and prepares the method for colloidal crystal, comprises the following steps:

[0020] S1, preparing latex particle suspension emulsion; using deionized water as the dispersion liquid, dispersing to obtain a polystyrene colloid particle suspension microemulsion with a solid content of 0.1%;

[0021] S2. The hydroxylated glass substrate is used as the substrate 1 to be coated, and the coating area is selected as 1cm 2 , injecting 40ul of colloidal particle suspoemulsion to the lower surface of the substrate to be coated with a micro injector 2, under the attraction force of the substrate to be coated 1 to the suspoemulsion, the suspoemulsion 3 is suspended on the lower surface of the substrate to be coated 1;

[0022] S3, combine figure 2 and image 3 As shown, the substrate to be coated with the suspended emulsion is moved into an oven at 40°C to evaporate the dispersion in the susp...

Embodiment 2

[0024] The invention provides a method for preparing colloidal crystals by suspension of emulsion, comprising the following steps:

[0025] S1, preparing latex particle suspension emulsion; using ethanol as the dispersion liquid, dispersing to obtain a silica colloidal particle suspension microemulsion with a solid content of 5%;

[0026] S2. Use the hydroxylated glass substrate as the substrate to be coated, and the coating area is selected as 1cm 2 , injecting 40ul colloidal particle suspoemulsion to the lower surface of the substrate to be coated with a micro injector, under the attraction force of the substrate to be coated to the suspoemulsion, the suspoemulsion is suspended on the lower surface of the substrate to be coated;

[0027] S3. Move the substrate to be coated with the suspended emulsion into a vacuum tube furnace at 150°C to evaporate the dispersion in the suspension, and the nanoparticles will be regularly discharged under the action of the capillary force gen...

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Abstract

The invention discloses a method for preparing a colloidal crystal by emulsion suspension. The method comprises the following steps: step 1, preparing a colloidal particle suspension emulsion; step 2,injecting the colloidal particle suspension emulsion into the lower surface of a membrane substrate to be coated, and enabling the suspension emulsion to be suspended at the lower surface of the membrane substrate to be coated under attractive force of the membrane substrate to be coated to the suspension emulsion; and step 3, transferring the to-be-coated membrane substrate suspending the suspension emulsion into an atmosphere with a temperature of 40-150 DEG C, and making the dispersion liquid in the suspension emulsion evaporated to obtain the colloidal crystal. According to the invention,colloidal particles are regularly arranged under actions of force such as capillary force and self gravity generated by evaporation of the dispersion liquid, so that the colloidal crystal is prepared, when the suspension emulsion is suspended downwards, the interfacial tension formed between the liquid surface and the substrate, namely, the capillary force which drives small spheres arranged, canbe increased under actions of the gravity of the dispersion liquid, so that the surface uniformity of the film-forming colloid crystal is improved; and the method has the advantages that the preparation process is simple, the efficiency is high, and complex equipment is not needed.

Description

technical field [0001] The invention relates to a method for preparing colloidal crystals by suspension of emulsion. Background technique [0002] Colloidal crystal is a kind of opal-like structure formed by a kind of micron, submicron or nanometer organic or inorganic particles closely arranged and piled up according to rules. It has a wide range of applications in many fields, such as: optical filters, catalysts, chemical sensors, catalysts, photonic crystals, surface wetting and the auxiliary preparation of two-dimensional pattern structures, etc. [0003] At present, the mainstream preparation methods of colloidal crystals include vertical dipping self-assembly method, pulling method, spin coating method, electrochemical deposition, convective assembly, etc. These methods have their inherent disadvantages, mainly: the operation is relatively complicated, or complex equipment is required, and the utilization rate of raw materials is not high, which is easy to cause waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/58C30B7/04
Inventor 汤永康甘治平苏文静姚婷婷马立云李刚
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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