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A kind of conductive fiber material and its preparation method and application

A conductive fiber and fiber technology, applied in the field of fiber materials, can solve the problems of poor repeatability of fiber devices, unstable conductivity of conductive film, exposure of conductive film, etc. Easy-to-make effect

Active Publication Date: 2022-05-03
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, although this type of fiber device exhibits excellent performance, there are also great shortcomings and deficiencies: the conductive film is exposed on the surface, the conductivity of the conductive film is unstable, and the repeatability of the fiber device is not good, and there is no sheath. In the case of protection, it is easy to cause contact short circuit and cause safety problems

Method used

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  • A kind of conductive fiber material and its preparation method and application
  • A kind of conductive fiber material and its preparation method and application
  • A kind of conductive fiber material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A kind of conductive fiber material, its preparation process is as follows figure 1 Shown (do not show the preparation process of polydopamine adhesion film among the figure), concrete preparation step comprises:

[0061] Step 1: Take 6g polystyrene-polyisoprene-polystyrene triblock polymer (PPP), be dissolved in the dichloromethane (DCM) of 14g subsequently, be placed on stirring table with the speed of 60rpm / min Stir at a high speed for 10 h until the dissolution is complete, and prepare a 30% mass fraction of PPP / DCM solution.

[0062] Use a 5ml syringe to draw absolute ethanol as the inner layer spinning solution, use another 5ml syringe to draw the PPP / DCM solution as the outer layer spinning solution, and pass through a 13g-17g coaxial needle (the inner needle is 17g). The extrusion rate of the layer spinning solution is 150 μl / min, and the extrusion rate of the inner layer spinning solution is 100 μl / min for coaxial extrusion at different speeds to form fibers. ...

Embodiment 2

[0070] A kind of conductive fiber material, its preparation process is as follows Figure 5 As shown (the preparation process of the polydopamine adhesive film is not shown in the figure), compared with Example 1, before injecting the oxidant solution in the elastic fiber tube, a 200% pre-strain is applied to the elastic fiber tube (that is, the elastic fiber tube is pulled stretched to increase its length by 200%).

[0071] Concrete preparation steps include:

[0072] Step 1: Weigh 6g of polystyrene-polyisoprene-polystyrene triblock polymer (PPP), then dissolve it in 14g of dichloromethane, place it on a stirring table and stir at a rate of 60rpm / min for 10h Until it dissolves evenly, it is made into a 30% mass fraction of PPP / DCM solution.

[0073] Use a 5ml syringe to draw absolute ethanol as the inner layer spinning solution, use another 5ml syringe to draw the PPP / DCM solution as the outer layer spinning solution, and pass through a 13g-17g coaxial needle (the inner nee...

Embodiment 3

[0080] A kind of conductive fiber material, its preparation method comprises the steps:

[0081] Step 1: Weigh 6g of polystyrene-polyisoprene-polystyrene triblock polymer (PPP), then dissolve it in 14g of dichloromethane, place it on a stirring table and stir at a rate of 60rpm / min for 10h Until it dissolves evenly, it is made into a 30% mass fraction of PPP / DCM solution.

[0082] Use a 5ml syringe to draw absolute ethanol as the inner layer spinning solution, use another 5ml syringe to draw the PPP / DCM solution as the outer layer spinning solution, and pass through a 13g-17g coaxial needle (the inner needle is 17g). The extrusion rate of the layer spinning solution is 150 μl / min, and the extrusion rate of the inner layer spinning solution is 100 μl / min for coaxial extrusion at different speeds to form fibers. The fiber is solidified in the isopropanol coagulation solution, and the fiber is collected by an electric winding machine at a rate of 20r / min. After the collection is...

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Abstract

The invention discloses a conductive fiber material and its preparation method and application. The conductive fiber material includes a hollow fiber, and the inner surface of the hollow fiber is coated with polydopamine film and 3,4-ethylene dioxide sequentially from bottom to top. Polymer films of thiophene. Polymers of 3,4-ethylenedioxythiophene include poly-3,4-ethylenedioxythiophene-sulfonate. The preparation method of the conductive fiber material is as follows: preparing a polydopamine membrane on the inner surface of the hollow fiber, and then preparing a polymer membrane of 3,4-ethylenedioxythiophene on the surface of the polydopamine membrane to obtain the conductive fiber material. The conductive film of the present invention is coated on the inner surface of the hollow fiber. Compared with the film on the outer surface of the fiber, it can avoid potential safety hazards and health problems caused by contact with the human body, and can also improve the safety and durability of use. It can also effectively reduce the conductivity instability of conductive polymers in air. The manufacturing process of the invention is simple and convenient, the cost is low, and the environmental pollution is small.

Description

technical field [0001] The invention relates to the technical field of fiber materials, in particular to a conductive fiber material and its preparation method and application. Background technique [0002] With the miniaturization and high integration of electronic devices, electronic products have become more portable, which has promoted the development of wearable devices. Wearable electronic devices can be carried along with the movement of the human body, including biomedical sensors, wearable heaters, human-computer interaction devices, smart prostheses, etc., which can be worn directly on the body or integrated into clothing or accessories. These wearables can adapt to different body types by deforming, and they can work well when the body moves freely, such as walking, running, jumping, etc. Wearable devices rely heavily on flexible devices that are bendable, stretchable, and possess excellent mechanical and electrical properties. Traditional electronic devices are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/37D01F6/44D01F1/08D06M101/18
CPCD06M15/37D01F6/44D01F1/08D06M2101/18
Inventor 周剑蒙伟森李柏霄
Owner SUN YAT SEN UNIV