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Method for constructing non-subdroplet type complex structure in droplet

A complex structure and droplet technology, applied in 3D object support structure, liquid material additive processing, additive manufacturing, etc., to achieve the effect of easy control and simple process

Inactive Publication Date: 2018-09-18
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the traditional membrane emulsification method and microfluidic method can only prepare complex emulsions containing the internal structure of the sub-droplet type

Method used

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  • Method for constructing non-subdroplet type complex structure in droplet
  • Method for constructing non-subdroplet type complex structure in droplet
  • Method for constructing non-subdroplet type complex structure in droplet

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036]Draw a certain volume of 2ml of unacidified liquid metal without stabilizer (melting point is 10.7°C, according to the mass ratio: gallium 66% indium 21.5% tin 12.5%), take a drop of liquid on the prepared Ordinary smooth flat. Because of its high surface tension, it naturally spreads in an ellipsoidal shape. Move the spread droplet and substrate together into the modified inkjet printer, start the pre-set printer program, and print fonts on the surface of the droplet, such as "sky" and "big", etc. The number and size of the fonts are different. Can be controlled in the computer. Stand still for about 5 minutes, remove the printing device, and use a syringe to extract 4ml of the same pure liquid metal, drop it on the printed drop, and then let it stand for about 10 minutes to complete the package of the printed font. Finally, move the intact droplet and the plate substrate together into a container filled with a solvent that is immiscible with the droplet, and use the ...

example 2

[0038] Draw a certain volume of 5ml of acidified liquid metal containing SDS stabilizer (melting point is 15.3 °C, according to the mass ratio of gallium 75.5% indium 24.5%), respectively take 5 drops of substantially equal diameter liquid drops in the prepared Ordinary smooth flat. Because of its high surface tension, it naturally spreads in an ellipsoidal shape. Move the spread droplet and the substrate together into the refitted inkjet printer, start the pre-set printer program, and print characters on the surface of the droplet, such as "sky" and "big", here are the printing materials and examples There is a certain difference in 1, which is a new type of conductive ink containing nano-silver, which is not miscible with liquid metal. The number and size of fonts can be controlled in the computer. Let it stand for about 5 minutes, remove the printing device, and use a syringe to extract 10ml of the same pure liquid metal, and drop it on the printed droplet. Since it has b...

example 3

[0040] Draw a certain volume of 10ml acidified liquid metal (melting point is 25.2°C, gallium 95.0% zinc 5.0% according to the mass ratio) which is acidified and added with PVA stabilizer. In the non-equal diameter groove embedded in the ordinary flat plate. It can be observed that, compared with the metal droplets formed on the flat glass substrate after being directly dropped, the surface formed by the metal droplets in the groove is flatter. The micro-stereostructures that have been 3D printed in advance are placed on the surface of the spread droplets in sequence, or the droplets and the substrate can be moved together into a modified 3D printer, and the surface of the droplets can be used as the printing substrate for direct printing. The number and size of fonts can be controlled in the computer. Stand still for about 5 minutes, remove the printing device, and use the same syringe to extract 20ml of the same liquid metal, and drop it on the printed droplet. Since it has...

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Abstract

The invention provides a method for constructing a non-subdroplet type complex structure in a droplet. The droplet is dropped on a common smooth plate or dropped into a groove embedded in the plate. The non-subdroplet type complex structure is directly printed on the surface of the spreaded droplet by taking the spreaded droplet as a printing substrate and combining with ink-jet printing or a 3D printing technology, or a pre-printed non-subdroplet type complex structure is placed on the surface of the spreaded droplet, and then a drop of pure droplet is added to cover the non-subdroplet type complex structure, thereby a complete droplet containing the non-subdroplet type complex structure is prepared. And finally, the prepared complete droplet is placed together with a bottom plate in a beforehand prepared collection beaker, and the collection of the complete droplet is completed with the help of external field force such buoyancy or ultrasound. The whole process is simple, and the size and quantity of the droplet can be easily controlled, thereby the batch preparation of the complete droplet that the non-subdroplet type complex structure is constructed in the droplet can be realized.

Description

technical field [0001] The invention relates to the technical fields of 3D printing, complex emulsions, liquid metals and microfluidics; in particular, it proposes a method for preparing complex droplets with complex internal structures other than sub-droplets without relying on microfluidic devices. Background technique [0002] A complex emulsion is a droplet with a complex internal structure, usually including multiple phase layers, and each layer can contain multiple sub-droplets. In general, complex emulsions are composed of two or more immiscible liquids or solid particles, and their internal sub-droplets can contain different fluids and carry different components. The internal structure of complex emulsions has great application potential in many fields. For example, they can be used as good carriers for sensitive substances, active ingredients, and cells, and are widely used in food, pharmaceuticals, cosmetics, and microbes. reactions and many more. In terms of foo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/106B29C64/379B01J13/04B33Y10/00B33Y40/00
CPCB01J13/04B29C64/106B29C64/379B33Y10/00B33Y40/00
Inventor 王靖涛靳涛鸣胡盼
Owner TIANJIN UNIV