Elastic conductor composite film and preparation method thereof

A technology of conductor compounding and thermoplastic elastomers, which is applied in the direction of cable/conductor manufacturing, equipment for manufacturing conductive/semiconductive layers, conductive layers on insulating carriers, etc., can solve the problems of not having elastic conductors, etc., and achieve conductivity Strong, excellent electrical stability, good economic applicability

Pending Publication Date: 2020-07-17
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there is no mature and convenient method for preparing the elastic conductors with the advantages of good stretchability, high conductivity and high stability.

Method used

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  • Elastic conductor composite film and preparation method thereof
  • Elastic conductor composite film and preparation method thereof
  • Elastic conductor composite film and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0068] see figure 1 , the present embodiment provides an elastic conductor composite film and a preparation method thereof, the composite film includes a base film layer and a coating material coated on the surface of the base film layer, wherein the base film layer is an electrospinnable thermoplastic elastomer, coated The cladding material is a liquid metal whose melting point is lower than room temperature.

[0069] It should be understood that the electrospinnable thermoplastic elastomers used include styrene-butadiene-styrene block copolymer (SBS), hydrogenated styrene-butadiene block copolymer (SEBS), benzene Ethylene-isoprene-styrene block copolymer (SIS), hydrogenated styrene / isoprene block copolymer (SEPS), polyester block copolymer (TPEE), polyurethane block copolymer (TPU), polyolefin copolymer (TPO), thermoplastic vulcanizate (TPV), diene block copolymer (TPB) and a series of thermoplastic elastomers that can be used for electrospinning, the present invention does...

Embodiment 2

[0084] see Figure 12 , in order to further improve the electrical conductivity of the composite film, this embodiment provides another elastic conductor composite film and its preparation method, on the basis of Example 1, a nano-silver conductive layer is formed between the base film layer and the alloy layer, thereby The purpose of significantly improving the electrical conductivity of the composite film is achieved.

[0085] The method for preparing the base film layer and the alloy layer in this embodiment is the same as that in Example 1, the difference is that a nano-silver conductive layer (silver nanoparticles, AgNPs) needs to be formed on the base film layer before coating the alloy layer, and the specific steps are:

[0086] Preparation of nano-silver solution, dissolving silver trifluoroacetate (AgTFA) in ethanol (EtOH) to obtain a solution with a concentration of 0.1-1g / mL;

[0087] Soak the basement film layer in nano-silver solution, reducing agent and absolute...

Embodiment 3

[0092] see Figure 16 , the present embodiment provides a three-layer elastic conductor composite film and a preparation method thereof, and particularly relates to an elastic conductor composite film applied to a wearable thermotherapy device. Wherein the preparation method of the base film layer and the alloy layer is the same as in Example 1, the difference is that the formation of the base film layer and the alloy layer is carried out alternately, the base film layer is formed first, and the alloy layer is formed after, and each time the alloy layer is scraped Form the required specific pattern on the base film layer, so it is easy to understand that each layer of elastic conductor composite film includes a base film layer and an alloy layer, and the three-layer structure elastic conductor composite film according to the electrospinning sequence of the base film layer It is represented as the top layer, the middle layer, and the bottom layer in turn, wherein the top layer ...

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Abstract

The invention provides an elastic conductor composite film and a preparation method thereof. According to the elastic conductor composite film, an electrospinnable thermoplastic elastomer and liquid metal are adopted as raw materials, the base film layer of the composite film is obtained through an electrospinning technology, the surface of the base film layer is coated with the liquid metal, andthe obtained composite film is good in stretchability and high in conductivity and has excellent electrical stability while being resistant to stretching; the electrospun fibers of the base membrane layer are of a reticular pore structure so that the composite film also has good vapor permeability and air permeability; the thermoplastic elastomer and the liquid metal for preparing the composite film belong to materials with lower cost so that the production cost of the composite film is reduced, and the economic applicability is good; universal preparation means such as electrospinning and coating are beneficial to large-batch industrial production, the composite film can be physically expanded according to actual application requirements, and compared with an existing conductive material,the elastic conductor composite film is more suitable for the fields of stretchable electronic circuits, flexible batteries, stretchable light source devices, wearable equipment and the like.

Description

technical field [0001] The invention belongs to the field of conductor materials, and in particular relates to an elastic conductor composite film and a preparation method thereof. Background technique [0002] Elastic conductors are indispensable components for wearable electronics, especially flexible electronics such as soft robots, bioinformatics-driven devices, and medical implants for health monitoring. In addition to considering the conductivity and elasticity of elastic conductors, electrical stability is also an extremely important consideration. Many practical applications such as stretchable electronic circuits, flexible batteries, and stretchable light source devices require conductive materials to have high electrical stability. However, it is quite challenging for highly stretchable elastic conductors to have high electrical stability at the same time. In addition, in addition to high electrical stability, it is also urgent to apply elastic conductors of porou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026H01B13/00
Inventor 马志军郑子剑
Owner THE HONG KONG POLYTECHNIC UNIV
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