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Layer-by-layer self-assembly composite conductive fiber bundle and preparation method thereof

A layer-by-layer self-assembly and composite conductive technology, which is applied in fiber processing, physical processing, textiles and papermaking, etc., can solve the problems of narrow adjustable range of conductive properties, brittle mechanical properties of conductive fibers, and inability to transition, so as to improve the surface of fibers Effects of combining weak defects, improving fiber surface activity, and optimizing interface structure

Active Publication Date: 2020-09-08
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the above method has the disadvantages of complex preparation process, high raw material cost and uncontrollable operation process
Moreover, the conductive fiber prepared by the above method has relatively brittle mechanical properties, and is not easy to bend and curl
Bending multiple times at the same time can easily damage the conductive channel
In addition, the adjustable range of conductivity is narrow, and it is impossible to transition between conductors and semiconductors, which limits its large-scale use in the fields of semiconductors and microelectronics

Method used

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  • Layer-by-layer self-assembly composite conductive fiber bundle and preparation method thereof
  • Layer-by-layer self-assembly composite conductive fiber bundle and preparation method thereof
  • Layer-by-layer self-assembly composite conductive fiber bundle and preparation method thereof

Examples

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preparation example Construction

[0034] The invention provides a method for preparing a layer-by-layer self-assembled composite conductive fiber bundle, comprising the following steps:

[0035] S1, performing surface decontamination treatment on the fiber monofilaments, and then performing drying treatment to obtain fiber bundles; performing oxygen plasma treatment on the fiber bundles for a predetermined time to obtain physically modified fiber bundles;

[0036] S2, putting the physically modified fiber bundle prepared in step S1 into an electropositive dispersion liquid of a predetermined concentration, and performing an electropositive substance adsorption treatment for a predetermined time to obtain a fiber bundle deposited with an electropositive substance; then Take out the fiber bundle deposited by the electropositive substance, drain it slightly and wash it, then put it into the electronegative dispersion liquid of predetermined concentration, carry out the electronegative substance adsorption treatmen...

Embodiment 1

[0048] A method for preparing a layer-by-layer self-assembled composite conductive fiber bundle, comprising the steps of:

[0049] S1, put the cotton fiber monofilament into deionized water, absolute ethanol, and acetone in sequence for ultrasonic cleaning for 15 minutes to ensure that the previous step is cleaned, and then proceed to the next step of cleaning after drying at room temperature. After the last step of acetone ultrasonic cleaning is completed, Dry at room temperature, arrange and obtain cotton fiber bundles; carry out oxygen plasma treatment to the cotton fiber bundles, the processing parameters are as follows: the current is 1.00A, the duty cycle is 80%, the automatic discharge time is 600s, and the automatic discharge pressure is 2000Pa ;

[0050] S2, put the fiber bundle prepared in step S1 into polydiallyldimethylammonium chloride modified carbon nanotube (PDCNT) dispersion (wherein, PDDA concentration is 0.25wt%, carbon nanotube concentration is 0.5wt%), ca...

Embodiment 2

[0061] The difference with Example 1 is: the number of layers of alternate adsorption treatment in step S2 is 2 layers, and the PDCNT / PEDOT:PSS conductive composite cotton fiber with 2 layers of self-assembly is prepared, and other steps are the same as in Example 1, and are not described here Let me repeat.

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Abstract

The invention provides a layer-by-layer self-assembly composite conductive fiber bundle and a preparation method thereof. The method comprises the following steps that firstly, a fiber bundle is subjected to oxygen plasma pretreatment to finish physical modification of fibers, so that the surface of the fiber bundle has a certain active group; and then, through a layer-by-layer self-assembly method, electropositive substances and electronegative substances are alternately deposited on the surface of the fiber bundle through the combination of electrostatic forces of positive charges and negative charges to form a composite conductive coating, in this way, the layer-by-layer self-assembly composite conductive fiber bundle formed by compositing a fiber bundle body and the composite conductive coating deposited on the fiber bundle body is prepared. The preparation method is simple and controllable, and the conductivity of the composite conductive fiber bundle can be regulated and controlled by controlling the self-assembly time, the number of self-assembly layers and the type and concentration of electropositive / electronegative substances; and the conductive coating of the prepared composite conductive fiber bundle is uniform and compact in structure and excellent in conductivity, and can be widely applied to the fields of wearable electronic devices, energy storage, sensing and the like.

Description

Technical field [0001] The invention relates to the technical field of textile material processing, and in particular to a layer-by-layer self-assembled composite conductive fiber bundle and a preparation method thereof. Background technique [0002] As an important type of smart material, conductive fibers have attracted widespread attention from the domestic and foreign material circles. Conductive fabrics made of conductive fibers have excellent electrical conductivity, thermal conductivity, shielding and absorption of electromagnetic waves. Conductive fibers can be used in anti-static textiles, anti-static fabrics, etc. The fields of electromagnetic radiation textiles, smart textiles and military textiles have good application prospects in clothing, sensors and industrial textiles. [0003] The current methods for preparing conductive fibers mainly include: 1) applying conductive polymers to the surface of fiber bundles by padding, coating or deposition. Although the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M11/53D06M10/00D06M15/03D06M15/15D06M15/233D06M15/356D06M15/37D06M15/61
CPCD06M11/74D06M15/3562D06M15/61D06M15/15D06M15/03D06M10/00D06M15/37D06M11/53D06M15/233
Inventor 王跃丹王栋朱如枫王垚陈媛丽刘琼珍
Owner WUHAN TEXTILE UNIV
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