Self sintering conductive ink based on liquid-state metal particles as well as preparation method and application thereof

A conductive ink, liquid metal technology, applied in applications, inks, household appliances, etc., can solve the problems of unsuitable fine pattern preparation and large-scale production, pattern structure influence, influence on electrical conductivity and other problems, to achieve easy installation and connection, Meet the requirements of complex circuits, the effect of less consumption

Active Publication Date: 2019-09-17
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods of film breaking mainly include using external force to scratch or crush the insulating film. These methods have low film breaking efficiency and affect the conductivity, and the additional external force will affect the structure of the pattern, which is also not suitable for the preparation and scale of fine patterns. production

Method used

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  • Self sintering conductive ink based on liquid-state metal particles as well as preparation method and application thereof
  • Self sintering conductive ink based on liquid-state metal particles as well as preparation method and application thereof
  • Self sintering conductive ink based on liquid-state metal particles as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] This embodiment is used to illustrate the liquid metal conductive ink and the use of the ink to prepare flexible conductive circuits.

[0076] Add 1g of polyvinylpyrrolidone into 10mL of deionized water, stir for 6h to fully dissolve. After the polyvinylpyrrolidone was fully dissolved, 1 ml of the solution was placed in a plastic tube, and 2 g of liquid indium gallium eutectic alloy (Ga 75.5%wtIn 24.5%wt) was added at the same time. Use an ultrasonic cell disruptor to sonicate for 60 seconds at a 30% amplitude to obtain a gray liquid metal suspension. The metal is dispersed into numerous micro-nano-sized small particles with an average particle size of 4700nm. The core of the small particles is liquid metal, and the outside is covered by a thin oxide film. The inventor utilizes a manual screen printing station to cooperate with a screen printing screen to print ink onto a polyethylene terephthalate (PET) plastic film. At this time, the pattern formed by liquid metal pa...

Embodiment 2

[0078] This example is used to illustrate the liquid metal conductive ink and the flexible and stretchable conductive circuit prepared using the ink.

[0079] Put 1g of polyvinylpyrrolidone, 5uL of fluorocarbon surfactant and 0.1g of chitin in 10mL of phosphate buffer, and stir for 6 hours to fully dissolve. After the polyvinylpyrrolidone is fully dissolved, take 1mL of the solution and place it in a plastic tube, and add 2g of liquid indium gallium tin alloy (In 22%wt Ga 68%wt Sn10%wt) at the same time. Use an ultrasonic cell disruptor to sonicate for 30 minutes at an amplitude of 30%, to obtain a gray liquid metal suspension. The metal is dispersed into small particles of micro-nano size, and the average particle size of the small particles is 800nm. Mix the components A and B of Ecoflex silica gel in equal quantities, stir well, apply on PET plastic film, and cure at room temperature for 6 hours to obtain Ecoflex silica gel film. The prepared conductive ink was added to a ...

Embodiment 3

[0081] This example is used to illustrate the liquid metal conductive ink and the flexible and stretchable conductive circuit prepared using the ink.

[0082] Put 0.5 g of polyvinyl alcohol and 0.01 g of N-(2-hydroxyethyl) dodecylamide into 10 mL of Tris-hydrochloric acid buffer solution, place in a water bath at 95 degrees Celsius and stir for 1 hour to fully dissolve. Take 1 mL of the solution and place it in a plastic tube, and the inventors added 2 g of gallium-zinc alloy (Ga 95%wt Zn 5%wt) into the solution. The conductive ink was prepared according to the method of Example 1. Since the gallium-zinc alloy melting point (37 degrees Celsius) was slightly higher than room temperature, it was heated in an oven at 80 degrees Celsius for 30 minutes before ultrasonication. Utilizing the prepared conductive ink, the inventors used screen printing technology to print conductive patterns on clean T-shirts. Due to the use of screen printing technology, this embodiment can obtain a ...

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Abstract

The invention provides self sintering conductive ink based on liquid-state metal particles as well as a preparation method and application thereof. The conductive ink has the main ingredients of liquid metal and water-soluble macromolecules; the preparation is simple; the cost is low; the patterning is easy; the ink can realize the automatic film breaking at the room temperature after the patterning; a conductive path is formed. The circuit manufactured by using the ink has very good flexibility and stretching performance; the line width is controllable; high resolution is realized; the ink is very suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of electronic materials, and in particular relates to a self-sintering conductive ink based on liquid metal particles, a preparation method and application thereof. Background technique [0002] With the continuous development of science and technology, the combination of biotechnology and electronic technology is getting closer. Researchers have increasingly urgent needs for flexible, stretchable conductors that can be tightly integrated with human tissues and organs such as skin and heart. Liquid metal conductors are favored due to their good electrical conductivity, excellent biocompatibility, superior flexibility and stretchability, etc. However, liquid metal has a very large surface energy, which makes it very difficult to pattern liquid metal on a flexible substrate, that is, to lay liquid metal wires on the substrate. Although there are some existing methods such as printing method, injection method, stencil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/106C09D11/03C09D11/107
CPCC09D11/52C09D11/106C09D11/03C09D11/107
Inventor 蒋兴宇唐立雪
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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