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A method for preparing graphene microsheets using a pulsed high-pressure water jet pulverizer

A graphene microchip and water jet pulverization technology, which is applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of large environmental pollution, high production cost of graphene, complicated preparation process, etc., and the preparation method is easy , low cost, evenly dispersed layers

Active Publication Date: 2018-03-27
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 process, the present invention proposes a method for preparing graphene microchips using a pulse high-pressure water jet pulverizer

Method used

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  • A method for preparing graphene microsheets using a pulsed high-pressure water jet pulverizer

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Effect test

Embodiment 1

[0028] A kind of method utilizing pulse high-pressure water jet pulverizer to prepare graphene microchip:

[0029] (1) 90 parts by weight of graphite powder was heated and pretreated at a heating temperature of 180°C for 20 minutes, and then graphite powder, 0.5 parts by weight of ethanol, 0.4 parts by weight of potassium tripolyphosphate and 500 parts by weight of In the high-speed mixer that water is added, stir with rotating speed 360rpm simultaneously during adding process, stirring time 3min, obtain graphite powder aqueous solution;

[0030] (2) Send the graphite powder aqueous solution obtained in step (1) into a closed reaction kettle, pressurize and intercalate the graphite powder for 4 hours under a pressure of 10 MPa, and weaken the van der Waals force between graphite powder layers to obtain pretreated graphite powder aqueous solution;

[0031] (3) Send the pretreated graphite powder aqueous solution obtained in step (2) into the pulse high-pressure water jet pulve...

Embodiment 2

[0033] A kind of method utilizing pulse high-pressure water jet pulverizer to prepare graphene microchip:

[0034](1) 98 parts by weight of graphite powder were heated and pretreated at a heating temperature of 220°C for 40 minutes, and then graphite powder, 2.0 parts by weight of ethanol, 1.5 parts by weight of potassium tripolyphosphate and 1000 parts by weight of In the high-speed mixer that water is added, stir with rotating speed 480rpm simultaneously during adding process, stirring time 3min, obtain graphite powder aqueous solution;

[0035] (2) Send the graphite powder aqueous solution obtained in step (1) into a closed reaction kettle, pressurize and intercalate the graphite powder for 10 hours under a pressure of 25 MPa to weaken the van der Waals force between graphite powder layers, and obtain pretreated graphite powder aqueous solution;

[0036] (3) Send the pretreated graphite powder aqueous solution obtained in step (2) into the pulse high-pressure water jet pul...

Embodiment 3

[0038] A kind of method utilizing pulse high-pressure water jet pulverizer to prepare graphene microchip:

[0039] (1) 93 parts by weight of graphite powder were heated and pretreated at a heating temperature of 200°C for 30 minutes, and then graphite powder, 1.6 parts by weight of ethanol, 1.1 parts by weight of potassium tripolyphosphate and 8000 parts by weight of In the high-speed mixer that water is added, stir with rotating speed 400rpm simultaneously during adding process, stirring time 3min, obtain graphite powder aqueous solution;

[0040] (2) Send the graphite powder aqueous solution obtained in step (1) into a closed reaction kettle, pressurize and intercalate the graphite powder for 6 hours under a pressure of 16 MPa to weaken the van der Waals force between graphite powder layers, and obtain pretreated graphite powder aqueous solution;

[0041] (3) Send the pretreated graphite powder aqueous solution obtained in step (2) into the pulse high-pressure water jet pul...

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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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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/19
CPCC01B2204/04
Inventor 陈庆叶任海
Owner CHENDU NEW KELI CHEM SCI CO LTD
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