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Degradable flexible conductive composite material and preparation method and application thereof

A composite material and flexible conductive technology, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve problems such as environmental governance problems, difficulty in recycling, and increase in electronic waste, and achieve disposal Low cost, improved sensitivity, and increased transportation area

Active Publication Date: 2022-02-08
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, the base materials used in flexible wearable electronic products not only need good mechanical properties, but also need excellent electrical conductivity, which makes their preparation process complicated and difficult to recycle. It is also extremely difficult to deal with. Therefore, with the popularization of flexible wearable sensors, the electronic waste generated by them is also increasing, which brings great troubles to environmental governance.

Method used

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  • Degradable flexible conductive composite material and preparation method and application thereof
  • Degradable flexible conductive composite material and preparation method and application thereof

Examples

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preparation example Construction

[0030] A method for preparing a degradable flexible conductive composite material, comprising the steps of:

[0031] (1) put the flat cocoon into the adhesive to soak or spin coat the adhesive on the flat cocoon;

[0032] (2) putting the nano conductive material into ethanol to be mixed with an ethanol dispersion, wherein the nano conductive material is a linear conductive material and / or graphene;

[0033] (3) Spray the ethanol dispersion on the flat cocoon, and obtain a composite material after drying.

[0034] Wherein, the five-year-old mature silkworm is placed on a flat silk spinning bed for spinning to obtain a flat cocoon. Of course, the silkworm can be silkworms such as tussah or silkworm. The flat cocoon obtained in this way is composed of sericin and silk fibroin, and has a porous hierarchical non-woven structure similar to silkworm cocoons. It is a natural biomass composite material, and the special structure and composition of the flat cocoon endow it with excelle...

Embodiment 1

[0041] The invention provides a method for preparing a degradable flexible conductive composite material, comprising the following steps:

[0042] (1) Place the silkworms on a flat spinning bed, and after the spinning is exhausted, remove the silkworms that have been spinning from the flat spinning bed to obtain flat cocoons, and soak the flat cocoons in a 6% silk fibroin solution After 15 minutes, take it out, drain and dry, and repeat soaking and drying 3 times, of course, drying is natural drying;

[0043] (2) Put silver nanowires and graphene (two-dimensional) with a mass ratio of 1:1 into ethanol, ultrasonicate for 30 minutes, and then stir for 40 minutes to make an ethanol dispersion, in which silver nanowires and graphene consist of nano The mass fraction of conductive material is 8%;

[0044] (3) Evenly spray the ethanol dispersion to the flat cocoon obtained in step (1), spray 0.05-0.2ml ethanol dispersion for every square centimeter of flat wire during spraying, and...

Embodiment 2

[0046] The invention provides a method for preparing a degradable flexible conductive composite material, comprising the following steps:

[0047] (1) Place the silkworms on a flat spinning bed, and after the spinning is exhausted, remove the silkworms that have been spinning from the flat spinning bed to obtain flat cocoons, and soak the flat cocoons in a 6% silk fibroin solution After 15 minutes, take it out, drain and dry, and repeat soaking and drying 3 times, of course, drying is natural drying;

[0048] (2) put the silver nanowires into ethanol, ultrasonically treat for 30 minutes, and then stir for 40 minutes to make an ethanol dispersion, wherein the mass fraction of the silver nanowires is 8%;

[0049] (3) Spray the ethanol dispersion evenly on the flat cocoon obtained in step (1), and then dry naturally for 5 hours after spraying to obtain the composite material. Natural drying can make the ethanol fully interact with the flat cocoon, and further improve the performanc...

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Abstract

The invention discloses a degradable flexible conductive composite material as well as a preparation method and application thereof. The preparation method of the composite material comprises the following steps: (1) flat cocoons are soaked in a binder or the flat cocoons are spin-coated with the binder; (2) a nanometer conductive material is put into ethyl alcohol to prepare ethyl alcohol dispersion liquid, and the nanometer conductive material is a linear conductive material and / or graphene; (3) ethanol dispersion liquid is sprayed to the flat cocoons, the composite material is obtained after drying. The prepared composite material has excellent conductivity, is used as a substrate material for preparing a flexible wearable sensor, is comfortable to wear, high in sensitivity and stable in performance, can be degraded after being discarded, and does not cause pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of flexible conductive materials, in particular to a degradable flexible conductive composite material and its preparation method and application. Background technique [0002] Wearable flexible electronics have become an important part of our daily life and can be integrated into the surface of the human body to provide many useful functions, such as health monitoring, motion tracking, and human-computer interaction. [0003] However, at present, the substrate materials used in flexible wearable electronic products not only need good mechanical properties, but also require excellent electrical conductivity, which makes their preparation process complicated and recycling extremely difficult. Therefore, with the popularization of flexible wearable sensors, The electronic waste generated by it is also increasing day by day, which has brought great troubles to environmental governance. Therefore, there is an u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/20H01B1/22H01B1/24H01B13/00
CPCH01B1/20H01B1/22H01B1/24H01B13/00
Inventor 刘祖兰代方银程岚蔡梦瑶李彩彩
Owner SOUTHWEST UNIVERSITY
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