Liquid metal flexible thin film with two-sides mutual difference characteristic and preparation method thereof

A liquid metal, flexible film technology, applied in equipment for manufacturing conductive/semiconductor layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc. and other problems, to achieve the effect of simple production process, adjustable film thickness and uniform film thickness

Active Publication Date: 2019-04-16
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing liquid metal flexible electronic circuits have problems such as complex manufacturing process, low processing circuit precision, thick processing circuit, and difficult circuit packaging.

Method used

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  • Liquid metal flexible thin film with two-sides mutual difference characteristic and preparation method thereof
  • Liquid metal flexible thin film with two-sides mutual difference characteristic and preparation method thereof
  • Liquid metal flexible thin film with two-sides mutual difference characteristic and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A liquid metal flexible film with different properties on both sides, the properties of the two sides of the liquid metal flexible film are different, one side is insulated, and the other side has controllable conductivity, and the conductivity is distributed in the liquid state Liquid metal realization in metal flexible film.

[0046] This embodiment also provides the preparation method of the liquid metal flexible film with different characteristics on both sides. For the process, see figure 1 . Specifically include the following steps:

[0047] (1) Take 10g of polyvinyl alcohol (PVA) particles and place them in a 500mL beaker, add 300mL of deionized water to swell for 2 hours, then place them in a 97°C heating box to heat and keep warm, and use a glass rod to stir continuously to fully dissolve the PVA particles. Obtain an aqueous solution of polymer material 2 with a concentration of 10g / 300mL;

[0048] (2) Take out 15g of PVA aqueous solution from the PVA aqueou...

Embodiment 2

[0055] A liquid metal flexible film with different properties on both sides, the properties of the two sides of the liquid metal flexible film are different, one side is insulated, and the other side has controllable conductivity, and the conductivity is distributed in the liquid state Liquid metal realization in metal flexible film.

[0056] The following is the preparation method:

[0057] (1) Take 10g of polyvinyl alcohol (PVA) particles and place them in a 500mL beaker, add 300mL of deionized water to swell for 2 hours, then place them in a 97°C heating box to heat and keep warm, and use a glass rod to stir continuously to fully dissolve the PVA particles. Obtain a 10g / 300mL PVA aqueous solution;

[0058] (2) Take 20g of PVA aqueous solution from 10g / 300mL of PVA aqueous solution, add 12g of liquid metal gallium, then add 6g of nanocellulose (CNC-C, solid content 9%) emulsion, 10mL of deionized water, and then stir the mixture to mix ;

[0059] (3) Sonicate the mixture ...

Embodiment 3

[0062] Embodiment 3: Preparation of flexible circuit board by needle engraving method

[0063] Using the film obtained in Example 1, complex circuits were carved on the side with controllable conductivity. The wire width can be adjusted according to the size of the tip, and the smallest wire with sub-micron thickness can be obtained.

[0064] The obtained circuit resistance characteristic was 1 Ω / cm.

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Abstract

The present invention provides a liquid metal flexible thin film with a double sided mutual difference characteristic, characters of two sides of the liquid metal flexible thin film are mutual different, one side is insulated, the other side has controllable conductivity, and the conductivity is realized through liquid metal distributed in the liquid metal flexible thin film. The present inventionalso provides a preparation and application of the liquid metal flexible thin film with the double sided mutual difference characteristic. The liquid metal flexible thin film with the double sided mutual difference characteristic expands categories of ultra-thin double-sided characteristic materials, in particular, can obtain ultra-thin devices such as an ultra-thin flexible integrated circuit, an ultra-thin flexible capacitor, and an ultra-thin sensor. The liquid metal flexible thin film with a double sided mutual difference characteristic has many other application possibilities, providinga new form of materials with the double-sided mutual different characteristic.

Description

technical field [0001] The invention belongs to the field of preparation of metal and non-metal composite materials, and in particular relates to a liquid metal thin film with double-sided and different properties, as well as its preparation and application. Background technique [0002] Materials with different properties on both sides have attracted attention due to their asymmetric structure and different properties on both sides. In the same mesoscopic system, double-sided materials with different properties have two completely different compositions and physical or chemical properties, usually with a clear partition structure, and have dual properties such as hydrophilic / hydrophobic, polar / non- Polarity is an important research direction in materials science. [0003] Gallium-based liquid metals, as a unique advanced material with high fluidity, high conductivity, and low toxicity, have been extensively and intensively studied in the rapid fabrication and printing of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026
Inventor 张朋举饶伟刘静
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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