Flexible conductor and preparation method thereof

A flexible conductive and sugar cube technology, applied in the field of conductors, can solve the problems of poor performance and cumbersome manufacturing process of flexible conductors, and achieve the effects of good stretchability, good flexibility, and solving cumbersome manufacturing processes.

Active Publication Date: 2017-11-24
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above deficiencies in the prior art, the object of the present invention is to provide a flexible conductor and its preparation method, aiming to solve the problems of cumbersome fabrication process and poor performance of the flexible conductor in the prior art

Method used

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  • Flexible conductor and preparation method thereof
  • Flexible conductor and preparation method thereof
  • Flexible conductor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The preparation of embodiment 1 silicone rubber sponge

[0054] Mix liquid A and liquid B in the Ecoflex-0030 series products of Smooth-On Company at a mass ratio of 1:1, and stir with a mechanical stirrer for 1 min to obtain a uniformly mixed silicone rubber prepolymer, and then prepare the prepared too Immerse the sugar cube in the uniformly mixed silicone rubber prepolymer, place the mixture of the prepolymer and the sugar cube in a vacuum drying room, and use a mechanical pump to extract the air in the mixture. After 15 minutes, the prepolymer will stick to the Polymer sugar cubes were taken out and placed upright in a plastic petri dish filled with pre-prepared air-free silicone rubber prepolymer, ensuring that the top of the sugar cube was just not submerged, and then placed in a drum at 65°C Cured in an air oven for 1 hour, then took out the cured mixture, cut off the layer of silicone rubber sticking to the top of the sugar cube, put it into a plastic cup filled...

Embodiment 2

[0055] The preparation of embodiment 2 flexible conductors

[0056] Cut the height of the silicone rubber sponge prepared in Example 1 to 7-9mm, measure the length, width and height of the sponge and calculate it as volume V, and then use a 1mL syringe to inject gallium indium tin alloy into the silicon rubber sponge prepared in Example 1. In the hole of the rubber sponge, record the mass M of the injected gallium indium tin alloy at the same time, then squeeze the silicone rubber sponge to make the liquid alloy evenly distributed, repeat this process several times, and calculate the liquid gallium indium tin alloy in the silicone rubber sponge. Density ρ=M / V, and finally a three-dimensional interconnected conductive silicon rubber sponge filled with gallium indium tin alloys of different densities is obtained.

Embodiment 3

[0057] The performance test of embodiment 3 flexible conductor

[0058] The relationship between conductivity and density ρ of flexible conductors

[0059] The conductivity of different shapes of liquid metal sponges (including: 17.6 mm*8.2 mm*15.8 mm, 16.2 mm*5.0 mm*15.1 mm, 14.7 mm*7.6 mm*7.6 mm and 14.5 mm*3.7 mm*8.1 mm) varies with The result of the change of the density ρ is as follows figure 1 As shown, it can be seen that the electrical conductivity of the liquid metal sponge has almost a linear relationship with its density ρ, and the electrical conductivity of the liquid metal silicone rubber sponge with different shapes increases with the increase of the density.

[0060] Resistance of flexible conductors of different shapes as a function of stretching ratio

[0061] The result is as figure 2 , showing the change in resistance of flexible conductors under different stretching ratios (0-400%), figure 2 , the density of liquid metal in each sponge is 2.0 g / cm 3 ...

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Abstract

The present invention discloses a flexible conductor and a preparation method thereof. The flexible conductor comprises an elastic sponge, liquid metal filling the hole of the elastic sponge and a silicone rubber configured to package the elastic sponge. The problems are solved that the flexible conductor is tedious in manufacturing technology and bad in performances in the prior art.

Description

technical field [0001] The invention relates to the field of conductors, in particular to a flexible conductor and a preparation method thereof. Background technique [0002] Flexible electronic devices can achieve various mechanical deformations, including bending, folding, stretching, compression, and torsion, and thus are applied in artificial electronic skins, stretchable displays, wearable electronics, flexible energy harvesting and storage devices, medical implants, etc. Injection and biosensors and many other fields. In order to fabricate flexible electronic devices, several related materials and methods for structured surfaces and three-dimensional materials, such as elastomers and conductive Structures of devices decorated with conductive materials such as metal nanowires, carbon nanotubes, and graphene sheets, or, direct metallization thin-film structures on flexible and stretchable films. However, the mismatch of mechanical regulation between existing hard condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00
CPCH01B1/22H01B13/00
Inventor 周学昌李垚垚陈玉珍
Owner SHENZHEN UNIV
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