A kind of foamed carbon film and preparation method thereof

A carbon film and bubble technology, applied in the field of foamed carbon film and its preparation, can solve the problems of poor sound regulation, poor temperature resistance of the film, slow cooling speed, etc. low effect

Active Publication Date: 2021-02-09
HANGZHOU GAOXI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two films have inevitable defects. First, the structural defects are large and the heating rate is slow; second, the thickness is high and the cooling rate is slow, so the sound clarity is poor; third, the temperature resistance of the film is relatively low Poor, poor sound adjustment; Fourth, the vertical thermal conductivity of films such as graphene or carbon tubes is extremely poor, which is not conducive to heat dissipation during the cooling process, seriously affecting the further improvement of sound quality

Method used

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  • A kind of foamed carbon film and preparation method thereof
  • A kind of foamed carbon film and preparation method thereof
  • A kind of foamed carbon film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Graphene oxide was prepared into a graphene oxide aqueous solution with a concentration of 0.5ug / mL, and anodized aluminum oxide (AAO) was used as a substrate to form a film with a thickness of 600nm.

[0028] (2) Place the graphene oxide film attached to the AAO film in a closed container, and fumigate with HI steam at 60°C for 10 h.

[0029] (3) The above-mentioned reduced graphene oxide film is sublimated and evaporated at 100° C., and the solid transfer agent camphor is evenly coated on the surface of the graphene film, and heated for a period of time at a temperature below the melting point of the solid transfer agent by 5 degrees. Put the graphene film coated with the solid transfer agent at room temperature, and the graphene film will be automatically separated from the AAO film.

[0030] (4) Slowly volatilize the solid transfer agent from the graphene film supported by the solid transfer agent obtained above at a temperature at which the solid transfer agent...

Embodiment 2

[0040] (1) Graphene oxide was prepared into a graphene oxide aqueous solution with a concentration of 10ug / mL, and anodized aluminum oxide (AAO) was used as a substrate to form a film with a thickness of 200nm.

[0041] (2) Place the graphene oxide film attached to the AAO film in a closed container, and fumigate with HI steam at 100°C for 1 h.

[0042] (3) The above-mentioned reduced graphene oxide film is melted and coated at a low temperature (52° C.), and the solid transfer agent paraffin is evenly coated on the surface of the graphene film, and heated for a period of time at a temperature lower than the melting point of the solid transfer agent by 5 degrees. time. Put the graphene film coated with the solid transfer agent at room temperature, and the graphene film will be automatically separated from the AAO film.

[0043] (4) Slowly volatilize the solid transfer agent supported graphene film obtained above at 120° C. to obtain an independent self-supporting reduced grap...

Embodiment 3

[0053] (1) Graphene oxide was prepared into a graphene oxide aqueous solution with a concentration of 2ug / mL, and anodized aluminum oxide (AAO) was used as a substrate to form a film with a thickness of 280nm by suction filtration.

[0054] (2) Put the graphene oxide film attached to the AAO film in an airtight container, and use HI steam at 80°C for 9h.

[0055] (3) The method of coating the above-mentioned reduced graphene oxide film solution uniformly coats the solid transfer agent aluminum chloride on the surface of the graphene film, and heats for a period of time at a temperature below the melting point of the solid transfer agent by 5 degrees. Put the graphene film coated with the solid transfer agent at room temperature, and the graphene film will be automatically separated from the AAO film.

[0056] (4) Slowly volatilize the solid transfer agent by the graphene film supported by the solid transfer agent obtained above at 180° C. to obtain an independent self-supporti...

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Abstract

The invention discloses a foaming carbon film and a preparation method thereof. The thickness of the carbon film is 70 to 200nm; a layer of continuous bubbles is formed inside the carbon film; the inner wall surface of each bubble comprises graphene sheets with the sheet distance being 0.34nm; the outer wall surface of each bubble comprises diamonds; a diamond layer is adhered to a graphene layer;the graphene sheets of the inner wall surface have little defects; ID / IG is smaller than 0.01. The film can be applied to acoustic detection and generation devices.

Description

technical field [0001] The invention relates to a high-performance nanometer material and a preparation method thereof, in particular to a foamed carbon film and a preparation method thereof. Background technique [0002] In 2010, two professors Andre GeiM and Konstantin Novoselov from the University of Manchester won the Nobel Prize in Physics for their first successful separation of stable graphene, which set off a wave of research on graphene around the world. Graphene has excellent electrical properties (electron mobility up to 2×105cM2 / Vs at room temperature), outstanding performance (5000W / (MK), extraordinary specific surface area (2630M2 / g), and its Young’s modulus (1100GPa) and breaking strength (125GPa). The excellent electrical and thermal conductivity of graphene completely exceeds that of metals. At the same time, graphene has the advantages of high temperature resistance and corrosion resistance, and its good mechanical properties and low density make it have th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C01B32/194B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B2204/04C01B2204/22C01B2204/24C01B32/184C01B32/194
Inventor 高超彭蠡刘一晗郭燕
Owner HANGZHOU GAOXI TECH CO LTD
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