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A kind of anisotropic twisted fiber bundle and its preparation method and application

An anisotropic fiber bundle technology, applied in the field of anisotropic twisted fiber bundles and its preparation, can solve problems such as structure, mechanical and electrical properties that are rarely reported, and achieve excellent mechanical properties, good strength and toughness, fiber Effects with controllable size

Active Publication Date: 2022-06-07
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(Reference 3: Goriely A, Tabor M. Spontaneous helix hand reversal and tendril perversion inclimbing plants. Physical Review Letters, 1998, 80, 1564.) But this kind of material with different chirality and anisotropy, its structure, mechanics and electrical properties are rarely reported

Method used

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  • A kind of anisotropic twisted fiber bundle and its preparation method and application
  • A kind of anisotropic twisted fiber bundle and its preparation method and application
  • A kind of anisotropic twisted fiber bundle and its preparation method and application

Examples

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Effect test

Embodiment 1

[0031] The PVDF fiber film was prepared by electrospinning, and the primary twisted fiber bundle was obtained by clockwise twisting method, the diameter of the single fiber was 100 nm, and the diameter of the primary twisted fiber bundle was 100 μm. The 2 primary twisted fiber bundles are double-twisted clockwise to obtain double-strand L-type twisted fiber bundles; The two primary twisted fiber bundles are double-twisted counterclockwise to obtain a double-strand R-type twisted fiber bundle. In the twisting process, the material GO is added by drip coating method, and the electrolyte PVA / H is added at the time of secondary twisting 3 PO 4 After reduction and post-treatment, the flexible capacitor device can be obtained. The mechanical properties of the obtained anisotropic fiber bundles were characterized, and the mechanical strength of the R-type structural fiber bundles was greater than that of the corresponding L-shaped fiber bundles. The mechanical fracture mode is smooth fra...

Embodiment 2

[0033] Using commercial cotton thread, the primary twisted fiber bundle is obtained by clockwise twisting method, and the diameter of the primary fiber bundle is 2 mm. The three primary twisted fiber bundles are double-twisted clockwise to obtain three L-shaped twisted fiber bundles; The three primary twisted fiber bundles were counterclockwise double-twisted to obtain three R-type twisted fiber bundles. By depositing Ni and GO during the twisting process, the battery device is obtained. The mechanical properties of the obtained anisotropic fiber bundles were characterized, and the mechanical strength of the R-type structural fiber bundles was greater than that of the corresponding L-shaped fiber bundles. The mechanical fracture mode is multi-stage jagged fracture. And the electrical properties of the two show obvious anisotropy.

Embodiment 3

[0035]Using wet-spun carbon fibers, the primary twisted fiber bundle is obtained by clockwise twisting method, the diameter of a single fiber is 500 nm, and the diameter of the primary twisted fiber bundle is 500 μm. The 2 primary twisted fiber bundles are double-twisted clockwise to obtain double-strand L-type twisted fiber bundles; The two primary twisted fiber bundles are double-twisted counterclockwise to obtain a double-strand R-type twisted fiber bundle. PPy is deposited during the twisting process, and electrolyte PVA / H is added at the time of secondary twisting 3 PO 4 , you can get the capacitor device. The mechanical properties of the obtained anisotropic fiber bundles were characterized, and the mechanical strength of the R-type structural fiber bundles was greater than that of the corresponding L-shaped fiber bundles. The mechanical fracture mode is smooth fracture. And the capacitive properties of the two show obvious anisotropy.

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Abstract

The invention provides an anisotropic twisted fiber bundle and its preparation method and application. The method comprises the following steps: performing primary processing on the initial single fiber obtained by wet spinning or electrospinning by clockwise twisting method. twisting to obtain primary twisted fiber bundles; using the primary twisted fiber bundles obtained by multiple strands for secondary twisting to obtain anisotropic twisted fiber bundles. The anisotropic twisted fiber bundle provided by the invention can realize the compounding of various materials and the integration of various functions, has structure and performance anisotropy, high strength and flexibility, and the size of the fiber is controllable and can be bent arbitrarily and braiding, which have broad applications in energy storage devices and anisotropic liquid transport.

Description

Technical field [0001] The present invention belongs to the field of nanotechnology to prepare anisotropic twisted fiber bundle technology, specifically relates to an anisotropic twisted fiber bundle and preparation method and application thereof. Background [0002] Compared with the traditional planar structure materials, fibrous materials have the advantages of multi-level multi-scale structure, lighter quality, better flexibility, easy weaving and good integration, etc., which can achieve large-scale production, so they are attracting more and more attention, especially in the use of twisting method to prepare spiral fiber bundles for energy storage devices and anisotropic liquid transportation. For example, Peng Huisheng and others used three-strand fiber twisting to make carbon nanotube-based supercapacitors with high energy and power density and lithium-ion battery energy storage devices. (Reference 1: Zhang, Y.; Zhao, Y.; Cheng, X.; Weng, W.; Ren, J.; Fang, X.; Jiang, Y.;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/44D02G3/02D02G3/04D02G3/32
CPCD02G3/441D02G3/44D02G3/02D02G3/04D02G3/045D02G3/328D10B2331/10D10B2321/06D10B2321/042D10B2321/10D10B2211/04D10B2201/02D10B2201/00D10B2101/12D10B2401/02D10B2401/063Y02E60/13
Inventor 郭凤云
Owner ZHEJIANG SCI-TECH UNIV
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