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A self-generating flexible electromagnetic fiber and its preparation method and application

A technology of self-generation and fiber, which is applied in the direction of spinning solution preparation, fiber chemical characteristics, material analysis through electromagnetic means, etc. It can solve the problems of heavy weight and difficulty in making fibers or fabrics, and achieve low cost, The equipment is simple and easy to operate, and the performance and thickness can be adjusted.

Active Publication Date: 2020-12-29
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the current mainstream self-generating devices, the conductive coils and magnets are basically hard materials, and the weight is relatively heavy, so it is difficult to make fibers or fabrics.

Method used

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  • A self-generating flexible electromagnetic fiber and its preparation method and application
  • A self-generating flexible electromagnetic fiber and its preparation method and application
  • A self-generating flexible electromagnetic fiber and its preparation method and application

Examples

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preparation example Construction

[0029] Specifically, a method for preparing self-generating flexible electromagnetic fibers of the present invention comprises the following steps:

[0030] (1) Adding magnetic particles with electromagnetic induction effect into the liquid organic polymer to form a mixture A;

[0031] (2) Fully stir the mixture A obtained in step (1) to form a uniform mixed solution B; wherein, the mass percent concentration of the liquid organic polymer in the mixed solution B is 30% to 90%, and the mass percent concentration of the magnetic particles 10% to 70%;

[0032] (3) Add absolute ethanol to the petri dish as dispersion liquid C;

[0033] (4) adding the mixed liquid B obtained in step (2) to the dispersion liquid C for dispersion to obtain a polymer composite fiber D or a fiber film E doped with magnetic particles;

[0034] (5) Dry the polymer composite fiber D or fiber film E obtained in step (4) to remove the solvent, and then wind and weave the conductive metal wire to form a fa...

Embodiment 1

[0042]Add 10 grams of PBAT to the beaker to form a uniform liquid polymer; add 10 grams of NdFeB magnetic powder to the liquid polymer, and stir magnetically at 50 ° C for 1 hour to obtain a uniform mixed solution; add absolute ethanol to the culture and make the added absolute ethanol just cover the whole Petri dish to form a dispersion; add the uniform mixed solution into the injection needle and slowly extrude into the dispersion to obtain a fibrous polymer; Put the material into an oven, dry at 60°C for 12 hours, and volatilize the absolute ethanol to obtain the polymer composite fiber material 1 containing NdFeB magnetic powder; the polymer composite fiber material 1 containing NdFeB magnetic powder Cut off 5 cm, twist and weave with conductive gold wire 2 to form an electromagnetic fiber material capable of self-generating function, such as figure 2 and image 3 shown. The fiber material is put into a tensile tester, and stretched at a rate of 30mm / s to 50% deformatio...

Embodiment 2

[0044] Add 10 grams of PBAT to the beaker to form a uniform liquid polymer; add 15 grams of NdFeB magnetic powder to the liquid polymer, and stir magnetically at 50°C for 1 hour to obtain a uniform mixed solution; add absolute ethanol to the culture and make the added absolute ethanol just cover the whole Petri dish to form a dispersion; add the uniform mixed solution into the injection needle and slowly extrude into the dispersion to obtain a fibrous polymer; The material is put into an oven, dried at 60°C for 12 hours, and the absolute ethanol is volatilized to obtain a polymer composite fiber material containing NdFeB magnetic powder. The polymer composite fiber material containing NdFeB magnetic powder is cut into 5 cm, and it is wound and woven with conductive gold wire to form an electromagnetic fiber material that can generate electricity by itself. The fiber material is put into a tensile tester and stretched at a rate of 40mm / s to 50% deformation, and an induced elect...

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Abstract

The invention belongs to the field of functional textiles, and relates to a self-generating flexible electromagnetic fiber, a preparation method thereof and an application of the fiber. The method includes the steps: adding magnetic particles with electromagnetic induction effects into liquid organic high-molecular polymers to form mixture A; stirring the mixture A to form mixed liquid B comprising liquid organic high-molecular polymers with the mass percent concentration of 30%-90% of and magnetic particles with the mass percent concentration of 10%-70%; taking absolute ethyl alcohol as dispersion liquid C; adding the mixed liquid B into the dispersion liquid C to disperse mixture to obtain polymer composite fibers D or fiber membranes E doped the magnetic particles; drying the polymer composite fibers D or fiber membranes E to remove solvents, and winding and weaving the polymer composite fibers D or fiber membranes E with the solvents and conducting metal wires to obtain the self-generating flexible electromagnetic fiber F. The self-generating flexible electromagnetic fiber F can generate induced electromotive force when being deformed or displaced. The self-generating flexibleelectromagnetic fiber fills in the gap of lightweight self-generating fiber materials in the prior art and solves the technical problems that the use range of an external power supply device is limited, and light weight of a self-generating device is difficultly implemented.

Description

technical field [0001] The invention belongs to the field of functional textiles, and relates to a self-generating flexible electromagnetic fiber and its preparation method and application, more specifically, to a flexible electromagnetic fiber prepared by a liquid spinning method, and the fiber material used in wearable devices on the application. Background technique [0002] With the continuous improvement of technology and people's living standards, people pay more and more attention to personal health care and disease prevention, and pay more and more attention to the monitoring of the health and safety of employees in special industries. As an indispensable part of people's daily life, textile and clothing are ideal objects for real-time monitoring. As the basic unit of clothing, fiber has the characteristics of weaving and high flexibility. [0003] Wearable sensing devices can monitor the physiological signals of our human body anytime and anywhere, and provide us ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/10D01F6/92D01D5/06D01D1/02D02G3/38G01N27/00
CPCD01D1/02D01D5/06D01F1/10D01F6/92D02G3/38G01N27/00
Inventor 苏彬杜卓林
Owner HUAZHONG UNIV OF SCI & TECH
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