Shenzhen Turing New Material Co., Ltd.
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Product Details
Turing graphene slurry is mainly composed of high-quality graphene and deionized water. This product has the characteristics of good dispersibility and excellent conductivity, and can meet the application needs of antistatic coatings, conductive coatings, and anti-corrosion coatings.
Product Features
• Exists in the form of slurry, no dust pollution, easy to add and disperse.
• Has good dispersibility in coatings, and can endow coatings with high conductivity, thermal conductivity and anti-corrosion performance.
Specification Parameters
Technical Parameters of Graphene Water-based Slurry (Coating)
Parameters and Indicators:
Appearance: Grayish-black slurry
Graphene content: 5%
Graphene sheet thickness/number of layers: 1-3 layers, with a single-layer rate greater than 95%
Particle size (D50): 7-10 μm
Particle size (D90): 11-16 μm
Aspect ratio: Approximately 25,000
PH value: ~4.5
Graphene defect status: Exfoliated by physical method, with fewer defects
Solvent: Deionized water
Viscosity: Non-Newtonian fluid, paste-like, thinning after shearing
Application fields
• Water-based coating systems, especially water-based conductive coatings
• water-based conductive inks
• water-based adhesives, reducing water and gas permeability and improving strength
• other water-based systems
•The surface resistance of graphene-based conductive coatings is lower than that of carbon black and carbon nanotubes. When the addition amount of graphene is 2% and 5% (the addition amount has been converted to graphene dry powder, the same below), the surface resistance of the coating reaches 10^9 Ω/sq and 10^3 Ω/sq respectively.
Water-based acrylic electromagnetic shielding coating with 5% graphene added, the surface resistance of the coating reaches 10^1 Ω/sq, the electromagnetic shielding effectiveness is improved, and it still performs well under high-frequency conditions.
• If you need to use powder products in coatings, you can pay attention to our company's graphene powder.
packaging
Each piece has a net weight of 20 kilograms and can be customized according to requirements.
The physical properties of the above products are for reference only and do not serve as the company's shipment commitment or acceptance criteria. The data provided above is only general information and is based on the information currently available to us. Due to the new and wide range of applications and uses of this product, some of which even go beyond our control, we shall not be liable even if we fail to investigate all necessary information in actual applications. Our company reserves the right to improve product parameters.
Micromechanical exfoliation method
In 2004, Geim et al. first successfully exfoliated and observed single-layer graphene from highly oriented pyrolytic graphite using the micromechanical exfoliation method. Geim's research group successfully prepared quasi-two-dimensional graphene using this method, observed its morphology, and revealed the reason for the existence of the two-dimensional crystal structure of graphene. The micromechanical exfoliation method can produce high-quality graphene.
The mechanical exfoliation method is a method for high-quality production! Unlike other production methods, it does not affect the properties of graphene!
Notes:
Instructions: This product is used under oral conditions.
Storage method: refrigerate and keep dry, protect from radiation, protect from reducing agents, and store away from light.
Graphene is a honeycomb-like planar film formed by carbon atoms through sp² hybridization. It is a quasi-two-dimensional material with a thickness of only one atomic layer, so it is also called single-atomic layer graphite. Physicists Andre Geim and Konstantin Novoselov from the University of Manchester in the UK successfully isolated graphene from graphite using the micromechanical exfoliation method, thus jointly winning the 2010 Nobel Prize in Physics. Common methods for producing graphene powder include mechanical exfoliation, oxidation-reduction, and SiC epitaxial growth, while the method for producing graphene films is chemical vapor deposition (CVD). Due to its excellent properties in strength, flexibility, electrical conductivity, thermal conductivity, and optical characteristics, it has achieved significant development in fields such as physics, materials science, electronic information, computer science, and aerospace. As a new type of nanomaterial currently found to be relatively thin, with high strength and excellent electrical and thermal conductivity, graphene is known as "black gold" and is highly likely to trigger a global upsurge in new technologies and new industries.
Physical properties
Strength and flexibility: The tensile strength and elastic modulus are 125 GPa and 1.1 TPa respectively, and the Young's modulus is approximately 42 N/m². A graphene sheet with an area of 1 m² can bear a mass of 4 kg, and its strength is about 100 times that of ordinary steel. A packaging bag made of graphene can bear a weight of approximately 2 tons, making it the strongest material known so far.
Electrical and thermal conductivity: One of the important properties of graphene is its unique carrier characteristics and massless Dirac fermion properties. Its electron mobility can reach 2×10⁵ cm²/V·s, which is about 140 times that of electrons in silicon and 20 times that of gallium arsenide. It has high temperature stability, with a conductivity of up to 10⁸ Ω/m and a sheet resistance of approximately 31 Ω/sq (310 Ω/m²), which is lower than that of copper or silver, making it the best conductive material at room temperature. It has a large specific surface area (2630 m²/g), and its thermal conductivity (5000 W·m⁻¹·K⁻¹ at room temperature) is 36 times that of silicon, 20 times that of gallium arsenide, and more than ten times that of copper (401 W·m·K at room temperature). The extremely high strength and flexibility, as well as the best electrical and thermal conductivity at room temperature, make graphene an ideal alternative material to ITO (indium tin oxide) and have important applications in flexible conductive film materials.
In addition, the half-integer quantum Hall effect of electron carriers and hole carriers in graphene can be observed by changing the chemical potential through the action of an electric field, and Novoselov et al. observed this quantum Hall effect of graphene under room temperature conditions. [4]
Experimental values of thermal conductivity, resistivity coefficient and temperature coefficient.
Optical properties: The absorption rate of single-layer graphene for visible light and near-infrared light perpendicular to it is only 2.3%, and there is no selective absorption for light of all wavelengths.
Linear optical properties: Single-layer graphene has a high light absorption rate, absorbing 2.3% of light per layer in the wide wavelength range from visible light to terahertz.
Nonlinear optical properties: When the intensity of incident light exceeds a certain critical value, the absorption of graphene for it will reach saturation. These characteristics enable graphene to be used in passive mode-locked lasers.
Chemical properties
Oxidizability: It can react with active metals or be oxidized in the air[5]. The reaction with active metals is equivalent to opening part of the double bonds: 8C + K = C8K. It is oxidized at high temperatures in the air: 2C + O2 = 2CO or C + O2 = CO2.
Reducibility: It can be oxidized by oxidizing acids, and through this method, graphene can be cut into small pieces[6]: 4HNO3 + C = 4NO2 + CO2 + 2H2O.
Stability: The structure of graphene is very stable, with the carbon-carbon bond only being 1.42. The connection between carbon atoms inside graphene is very flexible. When an external force is applied to graphene, the carbon atom plane will bend and deform, so that the carbon atoms do not need to rearrange to adapt to the external force, thus maintaining structural stability. This stable lattice structure gives graphene excellent thermal conductivity. In addition, when electrons in graphene move in orbitals, they will not be scattered due to lattice defects or the introduction of foreign atoms. Because the interatomic force is very strong, at room temperature, even if the surrounding carbon atoms collide, the interference to the electrons inside graphene is very small[7].
Aromaticity: Graphene has aromaticity and the properties of aromatic hydrocarbons.
Solubility: It shows good solubility in non-polar solvents[8].
Other properties: It can adsorb and desorb various atoms and molecules[9], and has hydrophobicity and lipophilicity.
Buyer's Notice
Shopkeeper's promise
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Price Description
This store offers factory-direct sales, so our product prices have an absolute advantage! We guarantee that the prices of products sold in our store are absolutely value for money. We provide our customers with products of absolute quality. All products are sold at a fixed price, no bargaining, no rounding down, and every customer is treated completely fairly.
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