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Elastic lead and preparation method thereof

A wire and elastic technology, applied in the field of elastic wire and its preparation, can solve the problems of poor electrical conductivity, poor tensile performance and poor electrical conductivity of ionic conductors, and achieve the effects of stable performance, high tensile performance and reduced content

Active Publication Date: 2018-01-23
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three types of elastic wires are stretchable through structural design, but there are problems such as poor conductivity, relatively poor stretchability, and large volume.
The linear structure adopts elastomers with good elastic properties, such as thermoplastic elastomers, thermosetting elastomers, etc., to achieve large tensile properties by compounding with ionic conductors, etc., but the conductivity of ionic conductors is relatively poor

Method used

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  • Elastic lead and preparation method thereof
  • Elastic lead and preparation method thereof
  • Elastic lead and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this embodiment, the elastic wire adopts liquid metal and elastic body, the elastic body is thermoplastic elastomer TPE, and the liquid metal is GaInSn alloy.

[0043] Such as figure 1 As shown, the elastic body 1 is a hollow tube structure with openings at both ends, and the liquid metal 2 is filled in the hollow part of the tube body. Such as figure 2 and 3 shown (for clarity, figure 2 and image 3 compare figure 1 Slightly enlarge the size ratio of the pipe body), seals are arranged at both ends of the pipe body. In this embodiment, the seal is composed of a metal seal head 5 matching the structure of the inner wall of the pipe, and a protrusion 7 arranged around the seal head. The head 5 is in electrical contact with the liquid metal 2, and the protrusions 7 protrude through the elastic tube holes 6 at both ends of the elastic tube.

[0044] In this embodiment, the specific steps for preparing the above-mentioned elastic wire are:

[0045] (1) Prepare th...

Embodiment 2

[0051] In this embodiment, the elastic wire adopts liquid metal and elastic body, the same as in embodiment 1, the elastic body is thermoplastic elastomer TPE, and the liquid metal is GaInSn alloy.

[0052] In this embodiment, the structure of the elastic wire is basically the same as in Embodiment 1, the difference is that, as Image 6 As shown, the liquid metal adheres to the inner wall of the pipe body, and the middle part 3 of the pipe body is hollow.

[0053] In this embodiment, the specific steps for preparing the above-mentioned elastic wire are:

[0054] (1) Prepare the elastic tube by melt extrusion, the elastic tube is a hollow tube body with openings at both ends, and its inner wall is smooth, choose a 10 cm long elastic tube, and punch holes at both ends of the elastic tube to form the elastic tube hole 6;

[0055] (2) if Figure 7 As shown, select a glass container 8, pour sodium hydroxide solution 9, put a 10 cm long elastic body 1 and liquid metal 2 in the sol...

Embodiment 3

[0058] In this embodiment, the elastic wire adopts liquid metal and elastic body, the same as in embodiment 1, the elastic body is thermoplastic elastomer TPE, and the liquid metal is GaInSn alloy.

[0059] In this embodiment, the structure of the elastic wire is basically the same as in Embodiment 1, the difference is that, as Figure 8 As shown, the hollow inner wall surface of the elastic body 1 contains several protrusions.

[0060] In this embodiment, the specific steps for preparing the above-mentioned elastic wire are:

[0061] (1) A method in which an extruder is used to simultaneously extrude the elastic tube and the liquid metal. Design extrusion dies such as Figure 9 As shown, the head of the extrusion die is two hollow tubes 13 and 14 coaxially socketed together. The inner tube 14 forms an extrusion channel for liquid metal, and the liquid metal 2 is injected into the inner tube by air pressure. 14, at the same time, the outer pipe body 13 and the inner pipe bo...

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Abstract

The invention provides an elastic lead. Liquid metal and an elastomer are adopted. The elastomer is designed into a hollow tube structure, the liquid metal fills in the hollow part and the two ends ofthe tube body are provided with conductive sealing members to act as the two electrode ends of the lead. The elastic lead has high conductivity and high tensile performance and is easy to prepare andstable in performance and can be applied to various types of electronic products so that miniaturization of the electronic product can be realized and carrying and use convenience can be enhanced.

Description

technical field [0001] The invention relates to the technical field of wire preparation, in particular to an elastic wire and a preparation method thereof, which can be applied to stretchable earphone wires, stretchable charging wires, stretchable conductive circuits, and the like. Background technique [0002] With the development of the Internet of Things and wearable technology, flexible and stretchable devices are the mainstream trend in the development of electronic devices in the future. Among them, elastic wire is the key material for the development of flexible devices, and has received extensive attention in recent years. [0003] The existing reported elastic wires are mainly composed of elastomers and conductors. Conductors are mainly composed of metal thin films, nanowires, nanotubes, nanoparticles and other nanomaterials represented by Ag nanowires, ion conductors and other materials. The composite structures of elastic conductors mainly include folded structu...

Claims

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Application Information

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IPC IPC(8): H01B7/00H01B7/06H01B13/008
CPCY02A30/14
Inventor 孙丹丹刘宜伟胡超秦琴尚杰李润伟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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