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Liquid metal-macromolecule printable ink and preparation and printing methods thereof

A liquid metal and printing ink technology, which is applied in metal pattern materials, printed circuit manufacturing, printed circuits, etc., can solve the problems of restricting the popularization and application of liquid metal, poor wettability of flexible substrates, and difficulty in pure liquid metal, and achieves a simple activation method. Convenience, reduced surface tension, improved printability

Active Publication Date: 2020-01-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large surface tension of liquid metal and poor wettability to flexible substrates, it is often difficult to directly write pure liquid metal, which greatly limits the popularization and application of liquid metal in the field of flexible electronics.

Method used

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  • Liquid metal-macromolecule printable ink and preparation and printing methods thereof
  • Liquid metal-macromolecule printable ink and preparation and printing methods thereof
  • Liquid metal-macromolecule printable ink and preparation and printing methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A magnetic liquid metal printing ink provided by the present invention is formed by mixing and concentrating liquid metal and polymer; wherein the liquid metal is gallium and gallium binary, ternary, or quaternary alloys, preferably gallium-indium binary alloys , by weight, the content of gallium is 35-90 parts, the rest is indium; or gallium indium tin ternary alloy, by weight, the content of gallium is 35-80 parts, the content of indium is 10-20 parts , and the rest is tin (this embodiment adopts gallium-indium binary alloy, the content of gallium is 50%, and the rest is indium). Among them, the polymer is preferably PDMS, and the PDMS precursor has a low viscosity, which is convenient for stirring and concentrating. as attached figure 1 As shown, the ink can be obtained after mixing liquid metal with polymer, stirring and concentrating. When liquid metal is mixed with macromolecule, by weight, liquid metal content is preferably 20-70 parts, and all the other are ma...

Embodiment 2

[0041] A magnetic liquid metal printing ink provided by the present invention is formed by mixing and concentrating liquid metal and polymer; wherein the liquid metal is gallium and gallium binary, ternary, or quaternary alloys, preferably gallium-indium binary alloys , by weight, the content of gallium is 35-90 parts, the rest is indium; or gallium indium tin ternary alloy, by weight, the content of gallium is 35-80 parts, the content of indium is 10-20 parts , and the rest is tin (in this embodiment, the gallium indium tin ternary alloy is selected, the content of gallium is 50 parts by weight, the content of indium is 20%, and the rest is tin). Among them, the polymer is preferably PDMS, and the PDMS precursor has a low viscosity, which is convenient for stirring and concentrating. as attached figure 1 As shown, the ink can be obtained after mixing liquid metal with polymer, stirring and concentrating. When liquid metal is mixed with macromolecule, by weight, liquid metal...

Embodiment 3

[0043] A magnetic liquid metal printing ink provided by the present invention is formed by mixing and concentrating liquid metal and polymer; wherein the liquid metal is gallium and gallium binary, ternary, or quaternary alloys, preferably gallium-indium binary alloys , by weight, the content of gallium is 35-90 parts, the rest is indium; or gallium indium tin ternary alloy, by weight, the content of gallium is 35-80 parts, the content of indium is 10-20 parts , and the rest is tin (this embodiment adopts gallium-indium binary alloy, the content of gallium is 70%, and the rest is indium). Among them, the polymer is preferably PDMS, and the PDMS precursor has a low viscosity, which is convenient for stirring and concentrating. as attached figure 1 As shown, the ink can be obtained after mixing liquid metal with polymer, stirring and concentrating. When mixing the liquid metal with the polymer, the content of the liquid metal is preferably 20-70 parts by weight, and the rest i...

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Abstract

The invention discloses liquid metal-macromolecule printable ink, which is formed by mixing liquid metal and a curable macromolecule system, wherein the weight percentage of the liquid metal is 75-95%. The invention also discloses a preparation method and application of the liquid metal-macromolecule printable ink. The liquid metal-macromolecule printable ink provided by the invention has good conductivity and is ideal conductive ink which can be used for flexible electronic equipment. Meanwhile, the ink has excellent printing performance, and provides possibility for high-speed and high-precision printing of the liquid-metal-based flexible electronic equipment. The macromolecule components of the liquid metal-macromolecule printable ink can be flexibly changed according to the flexible substrate material of the flexible electronic equipment in actual application, so that the strong bonding force between the ink and the flexible substrate is ensured, and the reliability of the flexibleelectronic equipment is improved. The liquid metal-macromolecule printable ink is simple in component, convenient to prepare, good in printability and low in cost, and has a wide application prospect.

Description

technical field [0001] The invention relates to the field of liquid metal printing, in particular to a liquid metal preparation and printing method applied to flexible electronics. Background technique [0002] With the rapid development of the electronic information industry, flexible electronic devices with excellent environmental adaptability have received more and more attention. A key technology in flexible electronics manufacturing is the selection of conductive materials. Liquid metals, such as gallium-based alloys, are increasingly used in the field of flexible electronics due to their high conductivity, liquid flexibility and self-healing properties. [0003] There are three main approaches to fabricate flexible electronics using liquid metal as a conductive material: microfluidic infusion, stencil printing, and direct writing. The microchannel injection method requires multi-step operations to complete the fabrication of flexible electronic devices, which is compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/09H05K3/12
CPCH05K1/092H05K3/125
Inventor 贺永周璐瑜傅建中
Owner ZHEJIANG UNIV
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