A kind of liquid metal-polymer printable ink and its preparation and printing method

A liquid metal and printing ink technology, which is applied in the manufacture of printed circuits, metal pattern materials, 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, excellent printing performance, and the effect of improving printability

Active Publication Date: 2021-06-04
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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  • A kind of liquid metal-polymer printable ink and its preparation and printing method
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  • A kind of liquid metal-polymer printable ink and its preparation and printing method

Examples

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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 a liquid metal polymer printable ink, which is formed by mixing liquid metal and a curable polymer system, wherein the weight percentage of the liquid metal is 75-95%. The invention also discloses the preparation method and application of the liquid metal polymer printable ink. The liquid metal polymer printable ink of the invention has good conductivity and is an ideal conductive ink that can be used in flexible electronic devices. At the same time, it has excellent printing performance, creating the possibility of high-speed, high-precision printing of liquid metal-based flexible electronics. The polymer components of the liquid metal polymer printable ink of the present invention can be flexibly converted according to the flexible substrate material of the flexible electronic device during actual implementation, thereby ensuring strong adhesion between the ink and the flexible substrate and improving the flexibility of the flexible electronic device. reliability. The liquid metal polymer printable ink of the invention has simple components, convenient preparation, good printability, low cost and broad application prospects.

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 Patents(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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