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Preparation method of pleated and enriched graphene/nano-diamond composite film

A nano-diamond and composite film technology, applied in the directions of diamond, graphene, nano-carbon, etc., can solve the problems of difficult to deal with more needed fields, low specific surface area, etc., to improve thermal conductivity, increase specific surface area, and increase density. Effect

Inactive Publication Date: 2018-06-29
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing methods do not have a high specific surface area, and it is difficult to deal with more demanding areas

Method used

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  • Preparation method of pleated and enriched graphene/nano-diamond composite film
  • Preparation method of pleated and enriched graphene/nano-diamond composite film
  • Preparation method of pleated and enriched graphene/nano-diamond composite film

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preparation example Construction

[0026] A preparation method of a wrinkle-rich graphene / nano-diamond composite film, comprising the following steps:

[0027] Step 1, solution dispersing graphene oxide and nano-diamond. The graphene oxide powder is ultrasonically dispersed in the aqueous solution to form a graphene oxide aqueous solution; nano-diamonds are ultrasonically dispersed in the aqueous solution through a probe to form a uniformly dispersed nano-diamond suspension. as attached figure 1 As shown, the graphene oxide aqueous solution and the nano-diamond suspension are uniformly mixed in the reaction vessel 1, and the probe is further ultrasonically promoted to disperse to form a graphene oxide / nano-diamond mixed dispersion, as shown in the attached figure 1 Among them, the solvent is water 2, nanodiamond 3 and graphene sheet 4.

[0028] In actual operation, the concentration of the graphene oxide aqueous solution can be between 1 mg per milliliter and 10 mg per milliliter, and the concentration of the...

Embodiment 1

[0035] Ultrasonic dispersion of 75 mg of graphene oxide powder in 75 milliliters of water was prepared into an aqueous solution of graphene oxide of 1 mg per milliliter; 25 milligrams of nanodiamonds were ultrasonically dispersed in 25 milliliters of water to form a uniformly dispersed nanodiamond suspension solution; 1 The milligram per milliliter graphene oxide aqueous solution and the nano-diamond suspension were uniformly mixed, and further ultrasonicated with a probe for 2 minutes to form a graphene oxide / nano-diamond mixed dispersion. The above-mentioned graphene oxide / nano-diamond mixed dispersion is processed by a negative pressure deposition method, and the graphene oxide / nano-diamond film is directly formed on the filter paper. After drying the graphene oxide / nanodiamond film in a vacuum oven at 60 degrees, put it into a tube furnace, raise the temperature to 900 degrees Celsius at 10 degrees per minute under the protection of inert gas argon, and maintain it for 1 ho...

Embodiment 2

[0037] Ultrasonic dispersion of 50 mg of graphene oxide powder in 50 milliliters of water was prepared into a graphene oxide aqueous solution of 1 mg per milliliter; 50 milligrams of nano-diamonds were ultrasonically dispersed in 50 milliliters of water to form a uniformly dispersed nano-diamond suspension solution; 1 The milligram per milliliter graphene oxide aqueous solution and the nano-diamond suspension were uniformly mixed, and further ultrasonicated with a probe for 2 minutes to form a graphene oxide / nano-diamond mixed dispersion. The above-mentioned graphene oxide / nano-diamond mixed dispersion is processed by a negative pressure deposition method, and the graphene oxide / nano-diamond film is directly formed on the filter paper. After drying the graphene oxide / nanodiamond film in a vacuum oven at 60 degrees, put it into a tube furnace, raise the temperature to 900 degrees Celsius at 10 degrees per minute under the protection of inert gas argon, and maintain it for 1 hour...

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Abstract

The invention discloses a preparation method of a pleated and enriched graphene / nano-diamond composite film. The method comprises the steps that graphene oxide and nano-diamond are correspondingly uniformly dispersed in an aqueous solution alone, and a graphene oxide aqueous solution and a diamond aqueous dispersion are uniformly mixed through a solution mixing method, so that the graphene oxide and the nano-diamond are uniformly dispersed at a molecular level; a graphene oxide / nano-diamond composite film is obtained by a vacuum deposition method, and the pleated and enriched graphene / nano-diamond composite film is obtained by high-temperature baking. By inserting the nano-diamond between graphene sheet layers, not only an effective specific surface area can be increased by preventing graphene sheet layer stacking, but also a whole specific surface area of a material can be effectively increased by increasing the wrinkles of the graphene sheet layers. The excellent thermal conductivitypeculiar to a diamond material is used for enhancing the whole thermal conductivity of the material in the direction perpendicular to the direction of the graphene sheet layers.

Description

technical field [0001] The invention relates to a preparation method of a composite film, in particular to a preparation method of a wrinkle-enriched graphene / nanometer diamond composite film. Background technique [0002] Diamond film has excellent comprehensive properties such as good wave transparency from far infrared to ultraviolet, extremely high hardness, high thermal conductivity, excellent thermal shock resistance, chemical stability, etc. It is the best among known materials at present Infrared window materials, so it will be the most potential new advanced aerospace materials such as infrared windows and fairings in the next generation. Due to the complexity of the diamond film growth mechanism, there is still a big gap between my country's research on this aspect and foreign countries. The growth of a single diamond film on a heterogeneous substrate, due to the growth at a high substrate temperature and the mismatch between lattices, and the excessive difference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184C01B32/28
CPCC01P2002/01C01P2004/03
Inventor 张龙杨芳李艺刘永刚马弢
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS