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Method for preparing graphene composite material based on Tesla valve

A technology of composite materials and Tesla valve tubes, applied in the field of preparing graphene composite materials based on Tesla valves, can solve problems such as difficult to reach the micron level, prepare graphene films, and thick composite materials, and achieve light weight , good adhesion, good flexibility effect

Pending Publication Date: 2022-01-18
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electroplating method is only suitable for metal substrates, and is not suitable for preparing graphene films on non-metal substrates.
Moreover, the thickness of composite materials prepared by physical methods such as electroplating is relatively thick, it is difficult to reach the micron level, and the error is large

Method used

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  • Method for preparing graphene composite material based on Tesla valve
  • Method for preparing graphene composite material based on Tesla valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Pass the prepared special 99 corundum Tesla valve tube into the deionized water with an impedance value of 8 ohms from the forward direction (the flow speed of the deionized water is 2.0m / s, and the passage time is 1800s), and then pass through Enter the national standard absolute ethanol solution (the flow rate is 1.0m / s, the passage time is 1200s), and dry (the drying temperature is 85°C, the time is 300min), and a clean corundum Tesla valve tube is obtained.

[0068] Using a vacuum pump, nano-alumina is introduced from the reverse direction of the corundum Tesla valve tube, the particle size is 1.2nm, the air supply speed is 0.25m / s, the deposition time is 1500min, and the thickness is 130μm obtained by physical vapor deposition. Al2O3 layer, and then from the reverse direction of the corundum Tesla valve tube into the nano-silica, the particle size is 1.3nm, the air outlet speed is 0.20m / s, the deposition time is 1800min, through the physical vapor deposition method ...

Embodiment 2

[0071] Pass the prepared special 99 corundum Tesla valve tube into the deionized water with an impedance value of 9.2 ohms from the forward direction (the flow speed of the deionized water is 3.0m / s, and the passage time is 1500s), and then pass through Enter the national standard absolute ethanol solution (the flow rate is 2.0m / s, the passage time is 800s), and dry (the drying temperature is 80°C, the time is 300min), and a clean corundum Tesla valve tube is obtained.

[0072]Using a vacuum pump, nano-aluminum oxide is introduced from the reverse direction of the corundum Tesla valve tube. The particle size is 3.0nm, the air outlet speed is 0.30m / s, the deposition time is 1980min, and the thickness is 150μm obtained by physical vapor deposition. Al2O3 layer, and then from the corundum Tesla valve tube into the nano-silica, the particle size is 3.0nm, the air outlet speed is 0.25m / s, the deposition time is 1800min, through the physical vapor deposition method A silicon dioxide...

Embodiment 3

[0075] Pass the prepared special 99 corundum Tesla valve tube forward into deionized water with an impedance value of 7.8 ohms (the flow speed of deionized water is 2.8m / s, and the passage time is 1550s), and then pass into the national standard Anhydrous ethanol solution (flow velocity of 2.8m / s, passage time of 900s), drying (drying temperature of 82°C, time of 150min) to obtain a clean corundum Tesla valve tube.

[0076] Using a vacuum pump, nano-aluminum oxide is introduced from the reverse side of the corundum Tesla valve tube. The particle size is 1.8nm, the air outlet speed is 0.26m / s, the deposition time is 1750min, and the thickness is 130μm obtained by physical vapor deposition. Al2O3 layer, and then from the reverse direction of the corundum Tesla valve tube into the nano-silica, the particle size is 1.8nm, the air outlet speed is 0.22m / s, the deposition time is 1800min, through the physical vapor deposition method A silicon dioxide layer with a thickness of 140 μm ...

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Abstract

The invention discloses a method for preparing a graphene composite material based on a Tesla valve, which comprises the following steps: sequentially introducing aluminum oxide and silicon dioxide from the reverse direction of a Tesla valve tube, and preparing a base material through a physical vapor deposition method; sequentially introducing graphene, silicon dioxide and aluminum oxide from the forward direction of the Tesla valve tube, and preparing the graphene composite material through a physical vapor deposition method. The graphene composite material is prepared on the inner wall of the Tesla valve tube by utilizing the special structure and performance of the Tesla valve tube, and the prepared graphene composite material has excellent high-temperature stability, is simple in structure and light in weight, can resist high-temperature oxidation corrosion and various severe environments, and is suitable for high-current environments such as various circuits.

Description

technical field [0001] The invention relates to the technical field of surface protection, in particular to a method for preparing a graphene composite material based on a Tesla valve. Background technique [0002] Graphene material is a relatively hot research material in recent years. Due to its special two-dimensional structure, it has superior electrical conductivity and good flexibility. In addition, in a relatively dense and oxygen-free environment, graphene material does not undergo severe damage. The oxidation reaction does not change its performance. Products prepared from graphite materials have been widely used, such as in vacuum high-temperature sintering molds. [0003] In order to further improve the performance of graphene materials, graphene is usually made into graphene composite materials together with other materials (such as alumina, silica, etc.) in the prior art. [0004] Existing methods for preparing graphene materials or graphene composite material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/22C23C14/06C23C14/02C23C14/08C23C14/10C23C14/54C01B32/194
CPCC23C14/22C23C14/0605C23C14/081C23C14/10C23C14/021C23C14/542C01B32/194
Inventor 杨波谢刚侯彦青谢雅典利建雨
Owner KUNMING UNIV OF SCI & TECH