Flexible graphene/barium ferrite composite fabric and preparation method thereof

A barium ferrite and composite fabric technology, applied in textiles and papermaking, etc., can solve the problems of easy agglomeration and poor impedance matching of graphene, and achieve the effect of improving impedance matching, good electromagnetic performance, and good softness and comfort.

Pending Publication Date: 2021-01-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene has poor impedance matching and is prone to agglomeration, so it is not suitable to be used alone as a wave absorber.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Flexible graphene/barium ferrite composite fabric and preparation method thereof
  • Flexible graphene/barium ferrite composite fabric and preparation method thereof
  • Flexible graphene/barium ferrite composite fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Flexible graphene / barium ferrite composite fabric and preparation method thereof, comprising the following steps:

[0027] Preparation of paint:

[0028] (1) Weigh 100g resin, 3g graphene and 30g barium ferrite powder.

[0029] (2) First, set the one-way series motor to stir the resin at 800rpm / min. During the stirring process, add graphene particles to the resin one by one. After adding the functional particles, increase the speed of the mixer to 2000rpm / min. Slowly drip Add appropriate amount of defoamer and thickener to make the paint mix evenly.

[0030] (3) Same as step 2, adding magnetic barium ferrite powder into resin to prepare barium ferrite coating.

[0031] Fabrication of flexible graphene / barium ferrite composite fabric:

[0032] (1) Choose 30×40cm fabric as the base fabric, and fix it flat on the needle board frame.

[0033] (2) First set the coating thickness to 0.4mm, first apply the graphene coating evenly on the surface of the fabric, place the sin...

Embodiment 2

[0036] Flexible graphene / barium ferrite composite fabric and preparation method thereof, comprising the following steps:

[0037] Preparation of paint:

[0038] (1) Weigh 100g resin, 3g graphene and 30g barium ferrite powder.

[0039] (2) First, set the one-way series motor to stir the resin at 800rpm / min. During the stirring process, add graphene particles to the resin one by one. After adding the functional particles, increase the speed of the mixer to 2000rpm / min. Slowly drip Add appropriate amount of defoamer and thickener to make the paint mix evenly.

[0040] (3) Same as step 2, adding magnetic barium ferrite powder into resin to prepare barium ferrite coating.

[0041] Fabrication of flexible graphene / barium ferrite composite fabric:

[0042] (1) Choose 30×40cm fabric as the base fabric, and fix it flat on the needle board frame.

[0043] (2) Firstly, set the coating thickness to 0.4 mm, firstly apply the barium ferrite coating evenly on the surface of the fabric, p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a flexible graphene/barium ferrite composite fabric and a preparation method thereof. The preparation method comprises the following steps of (1) preparing a coating: a, weighing a certain mass of graphene, barium ferrite and resin; b, stirring the resin, adding graphene in the stirring process, increasing the rotating speed, stirring for a certain time, and slowly dropwiseadding a defoaming agent and a thickening agent in the stirring process to uniformly disperse the mixture; and c, slowly adding barium ferrite powder into the resin as in the step 2 to prepare the barium ferrite coating. (2) preparing a coated fabric, namely a, flatly fixing a conductive fabric on a needle plate frame; B, selecting the coating thickness and the coating speed, uniformly coating the coating on the surface of the fabric, and changing the coating sequence of the two coatings (firstly coating graphene and then coating barium ferrite; or firstly coating barium ferrite and then coating graphene) to prepare two kinds of composite fabrics respectively; and c, drying the coated fabric in a drying oven to obtain the flexible graphene/barium ferrite composite fabric.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic shielding fabrics, in particular to magnetic barium ferrite doped graphene composite fabrics and a preparation method thereof Background technique [0002] With the development of electronic information technology, electromagnetic waves widely exist in people's daily life and have become one of the important sources of environmental pollution. Electromagnetic waves will not only interfere with the signals of military electronic equipment such as aircraft and radar, but also pose a potential threat to human health. Therefore, the research and development of new electromagnetic shielding materials is of great significance. [0003] As an effective means to prevent electromagnetic pollution, shielding materials have been widely used in military and civilian fields. However, it is difficult for a single shielding material to meet the development concepts of strong shielding ability, wide freq...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0063D06N3/0015D06N3/0088D06N3/0077D06N2201/085D06N2209/041D06N2209/048
Inventor 赵晓明王欢欢刘元军
Owner TIANJIN POLYTECHNIC UNIV
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