Product Description：
Graphene Nanoplatelets Dispersion Liquid (by physical method）
This product is made of natural flake graphite as raw material to get graphene products through physical exfoliation process. It has the advantages of high purity, large specific surface area, high stability, etc. The graphene microfilm exfoliated by physical method does not have the oxidation process of strong oxidizing agent, does not introduce lattice defects, and has excellent electrical conductivity. The most commonly used dispersant is water, while ethanol, ethyl, NMP, DMF, etc. can also be used as a dispersant for graphene. Graphene dispersion is not stable, often need to add an appropriate amount of dispersing additives.
Product Advantages:
1、High product quality: no introduction of lattice defects;
2, Less impurity content: all-round control of metal impurity content, to meet customer demand for high purity;
3, Good electrical conductivity: physical method of preparing graphene powder with few defects, excellent electrical and thermal conductivity;
4, No dust pollution in liquid form, easy to add, and it is convenient for operation;
5, Good stability of the dispersed liquid, less agglomeration, the product maintains a monolayer dispersion state;
Technical Specification:
|
Layers
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particle size（D50=μm）
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dispersing agent
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Solid content
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Appearance
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pH value
|
|
2~8
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7~12μm
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deionized water
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＜1%
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Black Liquid
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6~7
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Product name: Graphene dispersion (physical method)
Product Model:SY-GNP-L;
Product specification: 50ml/bottle, 100ml/bottle, 250ml/bottle, 500ml/bottle, 1000ml/bottle
Concentration of dispersant mg/mL: 0.5, 1.0, 2.0, 5.0, 10
Brand: SmartCmeta
Abbreviation: GNP
Preparation method: physical method
Raw material: natural flake graphite
Dispersion stability: unstable
Place of origin: Beijing, Xiamen
Price:Cheaper in a bulk order
Customization: Customization is acceptable
Frequently Asked Questions:
Q: What are the categories of graphene materials?
A: According to the different preparation processes, graphene materials can be divided into two categories: graphene oxide and graphene, and graphene can be divided into graphene nanosheets prepared by physical method, usually denoted by GNP, and reduced graphene oxide prepared by redox method, usually denoted by rGO, according to the different preparation processes.
Q: What are the differences in the usage conditions of these three types of graphene products?
A: GO has better hydrophilicity and can be stably dispersed in water without adding any additives, but some lattice defects are introduced in the process of oxidative intercalation, so GO is almost non-conductive; GNP has a complete lattice and better electrical conductivity, but GNP has a strong hydrophobicity, which makes it difficult to be dispersed without dispersing additives and the number of layers is higher than that of graphene oxide; rGO has a higher conductivity and dispersibility between GO and GNP; rGO also needs to add appropriate amount of dispersing additives in the process. The conductivity and dispersibility of rGO is between GO and GNP, and it is necessary to add appropriate amount of dispersing additives in the process.
Q: Is the graphene dispersion sonicated? Does it need to be ultrasonicated again before use?
A: Graphene dispersion is ultrasonically dispersed before leaving the factory, but since the dispersibility of graphene is poorer than that of graphene oxide, it is recommended to ultrasonicate again for 5~10min before use.
Q: What should I do if the dispersion effect deteriorates after storage for a period of time?
A: A small amount of surfactant such as sodium cholate can be added to the dispersion system to reduce the surface tension of graphene and enhance its dispersion effect.
Q: How to store graphene dispersion?
A: It is recommended to keep it in a ventilated, cool and dry environment, and store it separately from strong oxidizers and flammable materials.
Q: What is the particle size of graphene?
A: At present, the particle size of graphene products prepared by chemical method is less than 5μm, and that of graphene products prepared by physical method is 7~12μm, if you need other sizes, please contact us for customization.
