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Conductive powder-liquid metal droplet and preparation method and application thereof

A liquid metal, conductive powder technology, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. The effect of maintaining performance

Active Publication Date: 2017-12-08
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a conductive powder-liquid metal droplet and its preparation method and application, aiming to solve the problem that the existing liquid metal is easy to cause damage to the traditional metal substrate, thereby reducing, destroying Conductivity issues with traditional metal substrates

Method used

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  • Conductive powder-liquid metal droplet and preparation method and application thereof
  • Conductive powder-liquid metal droplet and preparation method and application thereof
  • Conductive powder-liquid metal droplet and preparation method and application thereof

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Embodiment

[0036] 1. Combine figure 1 Shown, the preparation method of graphene-liquid metal droplet is as follows:

[0037] Extrude liquid metal 2 (a gallium-indium-tin alloy with a melting point of 11°C and a gallium-indium eutectic with a melting point of 15.7°C) with a syringe 1 in the form of a droplet 3 (the diameter of the droplet is about 2mm), and set Covered with graphene powder 4 (the graphene powder is flaky, the thickness is 5nm, the sheet size is 20 μm, the number of layers is 8 layers, and the conductivity is 10 5 S / m, purity > 95%, specific surface area 200m 2 / g) on ​​the petri dish, then vibrate the petri dish, and the drop rolls for about 10 seconds, so that the graphene powder covers the surface of the liquid metal droplet, and the black graphene powder covers the metallic luster of the liquid metal, forming a graphene-liquid Metal droplets5.

[0038] 2. The structure of graphene-liquid metal droplets

[0039] In the described graphene-liquid metal droplet that pr...

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Abstract

The invention discloses a conductive powder-liquid metal droplet and a preparation method and application thereof. The method comprises the steps of putting a liquid metal on a container paved with conductive powder in a form of a liquid droplet; and vibrating the container, rolling the liquid metal droplet in the container and covering the surface of the liquid metal droplet with conductive powder to form the conductive powder-liquid metal droplet. The conductive powder (graphene) and the liquid metal (a gallium-indium-tin alloy and gallium-indium eutectic) have high conductivity and thermal conductivity. The high-conductivity graphene powder coats the liquid metal droplet, so that the liquid metal is prevented from being in direct contact with a metal substrate and the behaviors, such as population and corrosion, of damaging the metal substrate are prevented. Furthermore, the conductive powder-liquid metal droplet has certain mechanical flexibility, the performance of the liquid metal droplet as a flexible conductor is not limited, the conductivity of the liquid metal droplet is not affected, and meanwhile, the original performance of the metal substrate is kept.

Description

technical field [0001] The invention relates to the field of flexible electronic circuits, in particular to a conductive powder-liquid metal droplet and its preparation method and application. Background technique [0002] Soft units in natural living systems perform biological functions, such as muscles controlling body movements through the skin and the sense of touch. Mimicking these general biological functions, AI systems accept various mechanical deformations by engineering materials and other strategies. Liquid metals (gallium indium tin alloy (GaInSn), gallium indium eutectic (EGaIn)) are a promising material that can meet the requirements of flexible conductors. This liquid metal has several special properties: high surface tension, high electrical conductivity, low toxicity, and low vapor pressure. These properties make liquid metals ideal materials for reconfigurable and stretchable applications in electronics and interconnection, soft sensors, etc. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/18H01B13/00
Inventor 周学昌陈玉珍
Owner SHENZHEN UNIV
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