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Preparation device and preparation method of biomedical graphene dispersion liquid

A technology of graphene dispersion liquid and preparation device, which is applied in the direction of graphene, chemical instruments and methods, carbon compounds, etc., can solve problems such as easy agglomeration, poor electrical conductivity and chemical properties, and increase biological effects, so as to prevent agglomeration and ensure Biosafety, enhanced bioperformance effects

Active Publication Date: 2021-06-15
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a kind of preparation device and preparation method of biomedical graphene dispersion liquid, the graphene that adopts this device and method to make can effectively solve the problem that existing graphene exists easily. Problems of agglomeration, poor electrical conductivity and chemical properties, and by adding different functional biological reagents to increase its biological effect, it is more in line with the requirements of biomedicine

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  • Preparation device and preparation method of biomedical graphene dispersion liquid
  • Preparation device and preparation method of biomedical graphene dispersion liquid
  • Preparation device and preparation method of biomedical graphene dispersion liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of preparation method of biomedical graphene dispersion liquid, concrete steps are:

[0059] (1) Add 60 g of graphite with a particle size of 120 μm into the crushing tank through the feed port and feed argon gas into the crushing tank through the air inlet, turn on the power device 1, and drive the propeller with a size of 5 × 8 × 0.5 cm to rotate , the speed of the propeller is 4000r / min, and the time is 1h. The graphite is sheared and crushed into graphene by the propeller, and the graphene with a smaller particle size falls into the grinding tank through a filter plate with a pore size of 30nm;

[0060] (2) Turn on the power device 2 to drive the threaded stirring plate to rotate, the rotating speed is 2000r / min, and the time is 3h, and then drive the grinding balls with a diameter of 5mm to roll, and add distilled water to the grinding tank through the liquid inlet, and the graphene is in the grinding ball. The dispersion liquid is formed under the action of...

Embodiment 2

[0063] A kind of preparation method of biomedical graphene dispersion liquid, concrete steps are:

[0064] (1) Graphite 100g with a particle diameter of 200 μm is added in the pulverizing tank through the feed inlet and feeds helium into the pulverizing tank through the air inlet, and the power unit one is turned on to drive the propeller with a size of 10×15×1cm to rotate, The speed of the propeller is 5000r / min, and the time is 1h. The graphite is sheared and crushed into graphene by the propeller, and the graphene with a smaller particle size falls into the grinding tank through a filter plate with a pore size of 50nm;

[0065] (2) Turn on the power device 2 to drive the threaded agitator to rotate at a speed of 4000r / min for 2 hours, and then drive the grinding balls with a diameter of 6mm to roll, and add distilled water to the grinding tank through the liquid inlet, and the graphene will be in the grinding balls A dispersion is formed under the action of further grinding...

Embodiment 3

[0068] A kind of preparation method of biomedical graphene dispersion liquid, concrete steps are:

[0069] (1) Add 120 g of graphite with a particle size of 300 μm into the crushing tank through the feed port and feed helium into the crushing tank through the air inlet, turn on the power unit one, and drive the propeller with a size of 12 × 18 × 2 cm to rotate, The speed of the propeller is 4000r / min, and the time is 1h. The graphite is sheared and crushed into graphene by the propeller, and the graphene with a smaller particle size falls into the grinding tank through a filter plate with a pore size of 70nm;

[0070] (2) Turn on the power device 2 to drive the threaded stirring plate to rotate at a speed of 5000r / min for 1h, and then drive the grinding ball with a diameter of 10mm to roll, and add pure water to the grinding tank through the liquid inlet, and the graphene is in the grinding ball Form dispersion liquid under the further grinding effect of the dispersion liquid,...

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Abstract

The invention discloses a preparation device and a preparation method of a biomedical graphene dispersion liquid. The preparation device sequentially comprises a smashing tank, a grinding tank, a dispersing tank and a storage tank from top to bottom, the upper portion of the smashing tank is provided with an air inlet, the grinding tank is provided with a liquid inlet, the dispersing tank is provided with a medicine inlet, the smashing tank, the grinding tank and the dispersing tank are sequentially and movably connected, a first filter plate is arranged between the smashing tank and the grinding tank, a second filter plate is arranged between the grinding tank and the dispersing tank, a third filter plate and a high-pressure spray head device are arranged at the bottom of the dispersing tank, the high-pressure spray head device is detachably connected with the storage tank, and the apertures of the first filter plate, the second filter plate and the third filter plate are sequentially reduced. The graphene prepared by adopting the device and the method not only can effectively solve the problems that the existing graphene is easy to agglomerate and poor in conductivity and chemical performance, but also can increase the biological effect by adding biological reagents with different functions, and better meets the requirements of biomedicine.

Description

technical field [0001] The invention belongs to the technical field of graphene preparation, and in particular relates to a graphene dispersion liquid preparation device and a preparation method thereof. Background technique [0002] Graphene belongs to graphene derivatives, is a carbon atom with sp 2 The hybrid orbitals form a hexagonal two-dimensional carbon nanomaterial with a honeycomb lattice. As one of the materials with the highest strength known at present, it also has good toughness and can be bent. The theoretical Young's modulus of graphene reaches 1.0TPa, and the inherent tensile strength is 130GPa. Graphene has very good thermal conductivity properties. The thermal conductivity of pure defect-free single-layer graphene is as high as 5300W / mK, which is the carbon material with the highest thermal conductivity so far, higher than single-walled carbon nanotubes (3500W / mK) and multi-walled carbon nanotubes (3000W / mK) . Chemically similar to graphite, graphene ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19C01B32/194
CPCC01B32/19C01B32/194C01B2204/22Y02P20/10
Inventor 马宇郭艳珠贾洪林刘斌
Owner LANZHOU UNIVERSITY