Method for preparing graphene nanoplatelets with pulsed high pressure water jet mill

A graphene micro-sheet, water jet pulverization technology, applied in graphene, chemical instruments and methods, inorganic chemistry and other directions, can solve the problems of large environmental pollution, complex preparation process, high graphene production cost, and achieves easy preparation method, The effect of uniform dispersion of layers and low cost

Active Publication Date: 2016-07-20
CHENDU NEW KELI CHEM SCI CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0007] Aiming at the disadvantages of high production cost of graphene, heavy environmental pollution and complex preparation pr

Method used

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  • Method for preparing graphene nanoplatelets with pulsed high pressure water jet mill

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Example Embodiment

[0027] Example 1

[0028] A method for preparing graphene microchips using a pulsed high-pressure water jet pulverizer:

[0029] (1) Heat 90 parts by weight of graphite powder at a heating temperature of 180°C for 20 minutes, and then combine the graphite powder and 0.5 parts by weight of ethanol, 0.4 parts by weight of potassium tripolyphosphate and 500 parts by weight. In the high-speed mixer where water is added, stir at 360 rpm during the adding process for 3 minutes to obtain an aqueous solution of graphite powder;

[0030] (2) The graphite powder aqueous solution obtained in step (1) is sent into a closed reaction kettle, and the graphite powder is pressurized and intercalated to embrittlement for 4 hours at a pressure of 10 MPa to weaken the van der Waals force between graphite powder layers to obtain pretreated graphite powder Aqueous solution

[0031] (3) The pretreated graphite powder aqueous solution obtained in step (2) is sent to the pulse high-pressure water jet pulver...

Example Embodiment

[0032] Example 2

[0033] A method for preparing graphene microchips using a pulsed high-pressure water jet pulverizer:

[0034] (1) Heat 98 parts by weight of graphite powder at a heating temperature of 220°C for 40 minutes, and then combine the graphite powder and 2.0 parts by weight of ethanol, 1.5 parts by weight of potassium tripolyphosphate and 1000 parts by weight. In the high-speed mixer where water is added, stir at 480 rpm during the adding process for 3 minutes to obtain an aqueous solution of graphite powder;

[0035] (2) The graphite powder aqueous solution obtained in step (1) is fed into a closed reaction kettle, and the graphite powder is pressurized and intercalated to embrittlement for 10 hours at a pressure of 25 MPa to weaken the van der Waals force between graphite powder layers to obtain pretreated graphite powder Aqueous solution

[0036] (3) The pretreated graphite powder aqueous solution obtained in step (2) is sent to the pulse high-pressure water jet pulve...

Example Embodiment

[0037] Example 3

[0038] A method for preparing graphene microchips using a pulsed high-pressure water jet pulverizer:

[0039] (1) Heat 93 parts by weight of graphite powder at a heating temperature of 200°C for 30 minutes, and then combine the graphite powder and 1.6 parts by weight of ethanol, 1.1 parts by weight of potassium tripolyphosphate and 8000 parts by weight. In the high-speed mixer where water is added, stir at 400 rpm during the adding process for 3 minutes to obtain an aqueous solution of graphite powder;

[0040] (2) The graphite powder aqueous solution obtained in step (1) is sent into a closed reaction kettle, and the graphite powder is pressurized and intercalated to embrittlement for 6 hours under a pressure of 16 MPa to weaken the van der Waals force between graphite powder layers to obtain pretreated graphite powder Aqueous solution

[0041] (3) The pretreated graphite powder aqueous solution obtained in step (2) is sent to the pulse high-pressure water jet pu...

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Abstract

The invention relates to the field of graphene materials, in particular to a method for preparing graphene nanoplatelets with a pulsed high pressure water jet mill.According to the method, a plugging layer is pressurized, Van der Waals' force among graphite powder layers is reduced, so that the graphite layers are easy to strip, then graphite powder is crushed and stripped under the action of water jet and turbulent flow and cavitation through pulsed high pressure water jet of the pulsed high pressure water jet mill, the evenly-dispersed graphene nanoplatelets with the number of layers ranging from 100 to 200 are obtained.Continuous and large-scale production of the graphene nanoplatelets with the number of layers being even is achieved, the yield is high, the cost is low, no pollution is caused, the layer thickness meets the use requirements in the fields of rubber enhancement, plastic enhancement, coating corrosion prevention, lubrication and sewage treatment, and it is convenient to promote large-scale application of graphene.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a method for preparing graphene microchips by using a pulse high-pressure water jet pulverizer. Background technique [0002] Graphene is another new carbon nanomaterial discovered after carbon nanotubes. Due to its special structure, graphene presents unique physical, chemical and mechanical properties, showing broad application prospects and receiving unprecedented attention. Attention and attention. Although the prospect of graphene is very attractive, there are still many challenging problems, among which the preparation of graphene is the most fundamental of all problems. If high-quality and high-yield graphene cannot be prepared efficiently and easily, then The research and application of other aspects of graphene will be greatly limited. [0003] Chinese Invention Patent Application No. 201210248634.X discloses a method for preparing graphene, which includes the followi...

Claims

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Application Information

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IPC IPC(8): C01B31/04
CPCC01B2204/04
Inventor 陈庆叶任海
Owner CHENDU NEW KELI CHEM SCI CO LTD
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