Simplified preparation method of graphene conductive fiber cloth and broadband electromagnetic wave absorption composite material thereof

A technology of conductive fibers and composite materials, applied in fiber processing, electrical components, magnetic field/electric field shielding, etc., can solve the problems of limited practical application, difficult to achieve large-scale production, complex preparation process, etc., to improve the interface polarization loss electromagnetic wave The ability to improve multiple scattering performance, the effect of broad application prospects

Active Publication Date: 2022-06-03
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process is complicated and it is difficult to achieve large-scale production, which limits its practical application.

Method used

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  • Simplified preparation method of graphene conductive fiber cloth and broadband electromagnetic wave absorption composite material thereof
  • Simplified preparation method of graphene conductive fiber cloth and broadband electromagnetic wave absorption composite material thereof
  • Simplified preparation method of graphene conductive fiber cloth and broadband electromagnetic wave absorption composite material thereof

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preparation example Construction

[0036] The invention provides a specific embodiment of a simplified preparation method of graphene conductive fiber cloth, comprising the following steps:

(1) Surface treatment of glass fiber cloth:

The glass fiber was placed in acetone under a certain power and ultrasonically treated for a certain period of time, and then the glass fiber cloth was taken out and dried to a constant weight for use.

[0037] (2) Preparation of graphene oxide dispersion:

Commercially available high-concentration graphene dispersion and water are used to prepare a uniformly dispersed graphene oxide dispersion of a certain concentration.

[0038] (3) The graphene oxide is loaded on the surface of the glass fiber cloth by the layer-by-layer self-assembly method:

(a) Arrange the glass fiber obtained in step (1) in the graphene oxide dispersion liquid obtained in step (2), immerse it for a certain period of time, take it out and dry it to a constant weight for use.

[0039] (b) Place the glass ...

Embodiment 1

A preparation method of a broadband electromagnetic wave absorption composite material utilizing graphene conductive fiber cloth, comprising the following steps:

(1) Cleaning treatment of glass fiber cloth surface:

The glass fibers were placed in acetone, sonicated at 100 W for 24 h, and then taken out and dried to constant weight for later use.

[0056] (2) Preparation of graphene oxide / water dispersion:

A graphene oxide / water dispersion with a concentration of 1 mg / mL was prepared, and then ultrasonically dispersed for 15 min at a power of 200 W to obtain a uniformly dispersed graphene oxide dispersion.

[0057] (3) The graphene oxide is loaded on the surface of the glass fiber cloth by the layer-by-layer self-assembly method:

(a) Arranging the glass fiber obtained in step (1) in the graphene oxide dispersion obtained in step (2), immersing it for 30 minutes, taking it out and drying it to a constant weight for later use;

(b) placing the glass fiber cloth obtained in ...

Embodiment 2

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Abstract

The invention relates to a simplified preparation method of graphene conductive fiber cloth and a broadband electromagnetic wave absorption composite material thereof. Graphene nanosheets are uniformly loaded on the surface of glass fiber cloth by adopting a layer-by-layer self-assembly matched chemical reduction process and are mutually lapped to form a conductive layer. All the graphene oxide physically adsorbed on the surface of the glass fiber cloth is removed by controlling ultrasonic power and time, so that the loaded graphene oxide uniformly wraps the surface of the glass fiber cloth through hydrogen bond interaction between the loaded graphene oxide and the glass fiber cloth and pi-pi action between sheet layers. The method is simple and easy to implement, green and environmentally friendly, and large-scale production is easy to achieve; in addition, under the condition that the graphene content is extremely low, good conductivity and very excellent wave absorbing performance are achieved. The graphene conductive fiber cloth is used as a reinforcing body to be compounded with a polymer matrix, and the structural wave-absorbing composite material which is thin in thickness, high in absorption strength and wide in absorption band can be obtained.

Description

technical field [0001] The invention relates to the field of graphene, in particular to a simplified preparation method of graphene conductive fiber cloth and a broadband electromagnetic wave absorption composite material. Background technique [0002] Graphene is a sp 2 Hybrid-connected carbon atoms are tightly packed into a new material with a single-layer two-dimensional honeycomb lattice structure, which has excellent optical, electrical, and mechanical properties, and is of great importance in the fields of materials, micro-nano processing, energy, biomedicine, and drug delivery. It is considered to be a revolutionary material in the future. [0003] Two-dimensional materials represented by graphene have unique microstructure, physicochemical properties and good dielectric loss ability, and have always been a hot research topic in the field of electromagnetic wave absorption. Graphene oxide (GO) is a two-dimensional (2D) structure with a variety of oxygen-containing f...

Claims

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Application Information

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IPC IPC(8): D06M11/74H05K9/00
CPCD06M11/74H05K9/0083Y02A20/212
Inventor 王飞飞温凯刘亚青黄绍梁
Owner ZHONGBEI UNIV
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