Preparation method for dispersing quartz fibers with different length-diameter ratios in nano carbon slurry

Abstract

The invention relates to a preparation method for dispersing quartz fibers with different length-diameter ratios in nano carbon slurry, and belongs to the technical field of preparation of wave-absorbing materials. The preparation method for dispersing the quartz fibers in the nano carbon slurry comprises the following step: mixing graphene oxide slurry or a carbon nanotube solution with the quartz fibers with different length-diameter ratios. According to the preparation method for dispersing the quartz fibers in the nanocarbon slurry, the quartz fibers with different length-diameter ratios are dispersed in graphene oxide slurry or a carbon nanotube solution, and dispersion liquid of the quartz fibers with different length-diameter ratios in the nanocarbon slurry is obtained.

Description

Technical Field

[0001] The invention relates to a preparation method for dispersing quartz fibers with different aspect ratios in nano-carbon slurry, belonging to the technical field of wave absorbing material preparation. Background Art

[0002] Graphene is a two-dimensional layered material with the characteristics of light weight and high conductivity. The surface of reduced graphene oxide also carries a large number of functional groups and intrinsic defects, which can increase dipole polarization, making graphene an excellent new electromagnetic wave absorption material. However, due to the problem of impedance matching, the absorption band of single graphene material is narrow, which is difficult to meet the current demand for broadband absorbing materials and needs further modification. Carbon nanotubes are a one-dimensional material with the characteristics of high conductivity and low density, and have potential application prospects in the field of absorbing waves. In 2024, Xia et al. studied and prepared titanium dioxide / carbon nanotube (TiO2 / CNT) composite materials with a maximum effective absorption bandwidth of 5.19 GHz (1.6 mm), which almost covers the Ku band. (Reference [2]: [1] Xia Q, Wang X, Huang Z, et al. The lightweight titanium dioxide / reduced graphene oxide composites prepared by hydrothermal method for microwave absorption [J]. Journal of Alloys and Compounds, 2024, 1003175640-175640.), by compounding with other materials, microwave absorbing materials with excellent performance can be prepared. Summary of the invention

[0003] The purpose of the present invention is to provide a preparation method for dispersing quartz fibers with different aspect ratios in nano-carbon slurry, and to obtain a dispersion of quartz fibers in nano-carbon slurry.

[0004] In order to achieve the above purpose, the technical solution adopted by the dispersion of quartz fiber in nano-carbon slurry of the present invention is:

[0005] A preparation method for dispersing quartz fibers with different aspect ratios in nano-carbon slurry comprises the following steps: adding quartz fibers with different aspect ratios into graphene oxide slurry or carbon nanotube solution and mixing them to obtain a dispersion of quartz fibers in the nano-carbon slurry.

[0006] The method for preparing the dispersion of quartz fiber in nano-carbon slurry of the present invention uses graphene oxide and quartz fiber to composite and adjust the electromagnetic parameters of the graphene matrix, freeze-drying and reducing the graphene absorbing sponge. The process is simple and stable, and the electromagnetic parameters of the composite material can be adjusted by composite with quartz fiber, thereby adjusting its impedance matching characteristics, making it easier for electromagnetic waves to enter the interior of the material, and dissipating the electromagnetic waves through multiple loss mechanisms, thereby achieving better absorbing performance.

[0007] Preferably, the concentration of the graphene oxide slurry is 1-16 mg / g, preferably 8-10 mg / g.

[0008] Preferably, the concentration of the carbon nanotube solution is 1-16 mg / g, preferably 4-10 mg / g.

[0009] Preferably, the aspect ratio of the quartz fiber is 50-1500, preferably 130.

[0010] Preferably, the mass ratio of the quartz fiber to graphene oxide or carbon nanotube is 0.2-0.8, preferably 0.4-0.6.

[0011] Preferably, the method for dispersing quartz fibers in nano-carbon slurry comprises the following steps: dispersing quartz fibers and water in graphene oxide slurry or carbon nanotube solution according to a mass ratio and stirring them fully for 6 hours.

[0012] The technical solution adopted by the quartz fiber nano-carbon slurry dispersion of the present invention is:

[0013] A quartz fiber nano-carbon slurry dispersion is prepared by the above-mentioned preparation method of dispersing quartz fibers with different aspect ratios in nano-carbon slurry.

[0014] The quartz fiber nano-carbon slurry dispersion of the invention obtains the quartz fiber nano-carbon slurry dispersion by dispersing quartz fibers with different aspect ratios in nano-carbon slurry, thereby providing an intermediate material for the preparation of subsequent materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an optical morphology image of the graphene and quartz fiber dispersion prepared in Example 1 of the present invention;

[0016] Figure 2 This is a SEM image of the quartz fiber used in Example 1 of the present invention.

[0017] Figure 3 This is a SEM image of the composite material prepared from the quartz fiber graphene dispersion in Example 1 of the present invention. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with specific implementation methods.

[0019] Example 1

[0020] The method for preparing the quartz fiber nano-carbon slurry dispersion of this embodiment comprises the following steps:

[0021] 1) Graphene oxide slurry, water and quartz fiber are mixed and stirred evenly to prepare quartz fiber graphene oxide slurry dispersions with different aspect ratios.

[0022] 2) The concentration of graphene oxide slurry is 10 mg / g, the aspect ratio of quartz fiber is 130, the mass ratio of quartz fiber to graphene oxide or carbon nanotube is 0.6, and the stirring time is 6 h.

[0023] The optical morphology of the graphene and quartz fiber dispersion obtained in step 1) of this embodiment is shown in Figure 1 .

[0024] Example 2

[0025] The method for preparing the quartz fiber nano-carbon slurry dispersion of this embodiment comprises the following steps:

[0026] 1) The carbon nanotube solution and quartz fiber are mixed and stirred evenly to prepare quartz fiber carbon nanotube dispersions with different aspect ratios.

[0027] Experimental example

[0028] Morphological tests were performed on the quartz fiber used in Example 1 and the composite material prepared from the dispersion.

[0029] The test method is to use a scanning electron microscope to observe the microscopic morphology of quartz fiber and composite materials. The test results are shown in Figure 2 , Figure 3 ,Depend on Figure 2 , 3 It can be seen that the quartz fibers prepared in the present invention are uniformly dispersed in the material, which indicates that the quartz fibers are uniformly dispersed in the dispersion.

[0030] It can be seen from the above embodiments that the present invention provides a preparation method for dispersing quartz fibers with different aspect ratios in nano-carbon slurry. By compounding with quartz fibers with different aspect ratios, the structure of the composite material can be adjusted, thereby adjusting the required material properties, so as to facilitate better application in actual production.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing quartz fibers with different aspect ratios dispersed in nano-carbon slurry, characterized in that: The method comprises the following steps: mixing graphene oxide slurry or carbon nanotube solution with quartz fibers of wave-transmitting materials with different aspect ratios to obtain the product.

2. The method for preparing quartz fiber dispersed in nano-carbon slurry according to claim 1, characterized in that: The concentration of the graphene oxide slurry is 1-16 mg / mL.

3. The method for preparing quartz fiber dispersed in nano-carbon slurry according to claim 1, characterized in that: The concentration of the carbon nanotube solution is 1-16 mg / mL.

4. The method for preparing quartz fiber dispersed in nano-carbon slurry according to claim 1, characterized in that: The aspect ratio of the quartz fiber is 50-1500.

5. The method for preparing quartz fiber dispersed in nano-carbon slurry according to claim 1, characterized in that: The mass ratio of the quartz fiber to graphene oxide or carbon nanotube is 0.2-0.

8.

6. The method for preparing quartz fiber dispersed in nano-carbon slurry according to any one of claims 1 to 5, characterized in that: The method for composite graphene oxide with quartz fiber comprises the following steps: dispersing quartz fibers with different aspect ratios and water in graphene oxide slurry according to a mass ratio and fully stirring for 4-6 hours; dispersing quartz fibers with different aspect ratios in a carbon nanotube solution according to a mass ratio and fully stirring for 4-6 hours.

7. A quartz fiber nano-carbon slurry dispersion prepared by the preparation method of dispersing quartz fibers with different aspect ratios in nano-carbon slurry as described in any one of claims 1 to 6.

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