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Graphene coating based on liquid material plasma spraying technology and spraying process thereof

A graphene and plasma technology, used in coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of limited applicable substrates, limited preparation size, weak bonding strength, etc., and achieve high production efficiency and process flow. Simple, short production cycle results

Active Publication Date: 2022-04-29
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to overcome the problems of limited preparation size, long preparation cycle, limited applicable matrix and weak bonding strength in the prior art.

Method used

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  • Graphene coating based on liquid material plasma spraying technology and spraying process thereof
  • Graphene coating based on liquid material plasma spraying technology and spraying process thereof
  • Graphene coating based on liquid material plasma spraying technology and spraying process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] refer to Figure 1-2 Shown, a kind of graphene coating and its spraying technology based on liquid material plasma spraying technology, concrete steps are as follows:

[0034] (1) Prefabricated graphene suspension: a graphite dispersion solution with a concentration of 1 mg / mL was used, and deionized water was used as a solvent.

[0035] (2) Substrate: The substrate is an alumina substrate with surface blasting treatment, the thickness is set to 1.8mm, and the substrate is preheated to 200°C.

[0036] (3) Spraying technology: set the spraying process parameters, adopt the liquid material plasma spraying technology to deposit the graphene suspension on the surface of the substrate through the spray gun, and obtain the graphene coating; realize the movement of the spray gun by setting up the plasma spray gun on the mechanical arm, and The moving speed of the mechanical arm is set at 200mm / s, the spraying distance is set at 100mm, and the number of spraying cycles is 20. ...

Embodiment 2

[0038] refer to Figure 1-2 Shown, a kind of graphene coating and its spraying technology based on liquid material plasma spraying technology, concrete steps are as follows:

[0039] (1) Prefabricated graphene suspension: a graphite dispersion solution with a concentration of 1.5 mg / mL was used, and deionized water was used as a solvent.

[0040] (2) Substrate: The substrate is a stainless steel substrate with surface sandblasting treatment, the thickness is set to 1.8mm, and the substrate is preheated to 200°C.

[0041](3) Spraying technology: set the spraying process parameters, adopt the liquid material plasma spraying technology to deposit the graphene suspension on the surface of the substrate through the spray gun, and obtain the graphene coating; realize the movement of the spray gun by setting up the plasma spray gun on the mechanical arm, and The moving speed of the mechanical arm is set at 200mm / s, the spraying distance is set at 100mm, and the number of spraying cy...

Embodiment 3

[0043] refer to Figure 1-2 Shown, a kind of graphene coating and its spraying technology based on liquid material plasma spraying technology, concrete steps are as follows:

[0044] (1) Prefabricated graphene suspension: Use a graphite dispersion solution with a concentration of 2 mg / mL and use deionized water as a solvent to compare the effect of the concentration of the prefabricated suspension on the deposition efficiency.

[0045] (2) Substrate: The substrate is an alumina substrate with surface blasting treatment, the thickness is set to 1.8mm, and the substrate is preheated to 200°C.

[0046] (3) Spraying technology: set the spraying process parameters, adopt the liquid material plasma spraying technology to deposit the graphene suspension on the surface of the substrate through the spray gun, and obtain the graphene coating; realize the movement of the spray gun by setting up the plasma spray gun on the mechanical arm, and The moving speed of the mechanical arm is set...

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Abstract

The invention relates to a graphene coating based on a liquid material plasma spraying technology and a spraying process of the graphene coating, and belongs to the technical field of coatings. According to the process, a substrate is preheated to 100-300 DEG C, graphene suspension liquid is deposited on the surface of the substrate through a spray gun by adopting a liquid material plasma spraying technology, and the graphene coating is obtained. The concentration of the graphene suspension liquid is 0.5 to 2 mg / mL; the power of the spray gun is 28-36 kW, the current of the spray gun is 780-850 A, and the voltage of the spray gun is 36-42 V; the spraying distance ranges from 40 mm to 200 mm; the moving speed of the spray gun is 50-1000mm / s; the number of spraying cycles is 2-50; the temperature of the matrix in the spraying process is 400-600 DEG C; the spraying process of the graphene coating has the characteristics of simple flow, short production period, high production efficiency and the like; and the prepared graphene coating has the advantages of larger preparation size, higher coating bonding strength and more applicable matrix types.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a graphene coating based on liquid material plasma spraying technology and a spraying process thereof. Background technique [0002] Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery. At present, conventional graphene coating preparation methods include vapor phase deposition (CVD) and suction filtration. First, the CVD preparation method of graphene coating requires high temperature and vacuum environment, and then the carbon-containing gaseous substance and hydrogen as a reducing gas are passed into a closed reaction furnace. Therefore, the CVD method limits the size of the substrate, cannot be deposited in a large size, and the deposition speed is slow, and the preparation cycle is long. In addition, the graphene coating prepared b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D5/00B05D1/02C09D1/00
CPCB05D7/24B05D5/00B05D1/02C09D1/00B05D2401/20
Inventor 俞泽新许振宁桂珑恩王博通刘妹妹王永光
Owner SUZHOU UNIV
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