Graphene Conductive Slurry Grinding and Dispersion Machine

Graphene is currently the thinnest, strongest, and most excellent two-dimensional carbon nanomaterial known, with exceptional electrical and thermal conductivity. Since its successful preparation in 2004, it has been regarded as one of the core materials leading the revolution in new materials due to its structure and properties. The defining feature of graphene is its two-dimensional crystal structure of a single layer of carbon atoms: each carbon atom forms covalent bonds with three adjacent carbon atoms through sp² hybrid orbitals, creating a planar network structure composed of hexagonal rings (similar to a honeycomb), with a thickness of only 0.335 nm. This structure is the source of all its outstanding properties—the strong covalent bonds within the plane give it extremely high stability, while the conjugated π-electron system provides the foundation for its electrical and optical properties.

The properties of graphene determine its wide range of applications, and it has already achieved commercial breakthroughs in multiple fields. Core application scenarios include:

1. Electronic Information Field

• Flexible Electronic Devices: CVD graphene films serve as transparent conductive electrodes, replacing ITO (indium tin oxide) in flexible displays (such as foldable phones) and wearable sensors, offering advantages such as bend resistance and low cost (indium is a scarce resource).

• High-Frequency Transistors: Utilizing the ballistic transport characteristics of electrons, high-frequency devices above 100 GHz are fabricated for 5G/6G communication.

• Sensors: Based on graphene's high sensitivity to gases and biomolecules (e.g., detecting formaldehyde concentrations as low as 0.1 ppm), it is used in environmental monitoring and medical diagnostics.

2. Energy Storage and Conversion

• Lithium-Ion Batteries: As a conductive additive (see previous section on "graphene conductive slurry"), it enhances the battery's rate performance (e.g., 20% improvement in 10C discharge capacity) and cycle life (＞90% retention after 1000 cycles). As an anode material (composite with silicon-based materials), its capacity can reach 1500 mAh/g (four times that of graphite).

• Supercapacitors: Graphene electrodes achieve a specific capacitance of 300-500 F/g (twice that of activated carbon) and fast charge-discharge speeds (1-10 seconds for full charge), making them suitable for automotive start-stop power sources and energy storage grids.

• Solar Cells: Replacing ITO as a transparent electrode, it reduces costs and improves light absorption efficiency (conversion efficiency increases by 1-2 percentage points).

3. Composite Materials

• Structural Reinforcement: Adding 0.1%-1% graphene to plastics (e.g., PP, PE) and rubber can increase material strength by 30%-50% and wear resistance by 20%, making it suitable for automotive components (weight reduction and fuel savings) and sports equipment (e.g., tennis rackets).

• Functional Composites: Adding graphene to metals (e.g., aluminum, copper) improves thermal conductivity by 20%-40%, making it suitable for LED heat sinks and power battery casings. Adding it to coatings imparts anti-static and anti-corrosion functions (e.g., anti-corrosion coatings for marine engineering).

4. Environmental Protection and Biomedicine

• Seawater Desalination: Graphene films with nanoscale pores (0.3-0.5 nm) can efficiently filter salt ions, with a water flux more than five times that of traditional reverse osmosis membranes, and are resistant to fouling.

• Pollutant Adsorption: Utilizing its high specific surface area, it adsorbs heavy metals (e.g., lead, mercury) and organic dyes from water, with an adsorption capacity exceeding 1000 mg/g.

• Drug Carriers: Surface-modified graphene can target and deliver anticancer drugs, reducing toxic side effects while also providing bioimaging functionality.

Jiangsu Sijun's GMSD2000 Graphene Conductive Slurry Grinding and Dispersion Machine is a high-tech equipment that integrates the functions of a colloid mill, disperser, and homogenizer. It is specifically designed for high-viscosity, hard-to-disperse materials and excels in the exfoliation and dispersion of nanoscale powders. Its core technology is derived from the German Industry 4.0 concept, achieving dual breakthroughs in efficiency and precision in fields such as graphene, lithium batteries, pharmaceuticals, and food through an innovative design of three-stage grinding + multi-stage shearing.

GMSD2000 Graphene Conductive Slurry Grinding and Dispersion Machine:

The grinding-type disperser is a high-tech product combining a cone mill and a disperser.

The first stage consists of three levels of progressively finer serrated protrusions and grooves. The stator can be adjusted infinitely to the desired distance from the rotor. Under enhanced fluid turbulence, the grooves change direction at each level.

The second stage consists of a rotor and stator. The design of the dispersion head also well meets the needs of materials with different viscosities and particle sizes. The difference between the inline stator and rotor (emulsification head) and the batch-type machine's working head design is primarily due to the requirements for transportability. It is particularly important to note that the differences between coarse, medium, and fine precision, as well as other types of working heads, are not only in the arrangement of the rotor teeth but also in the distinct geometric characteristics of different working heads. The number of slots, slot width, and other geometric features can alter the functions of the stator and rotor working heads. Based on past practices and experience, working heads are selected to meet specific applications. In most cases, the machine's construction is tailored to the specific application, making it crucial for producing the final product. When uncertain whether a working head's construction meets the intended application.

The GMSD2000 grinding disperser features a vertical split structure with certain conveying capabilities, enabling it to handle materials with high solid content and certain viscosity. The GM2000 is designed with a special rotor that conforms to the fluid characteristics of the slurry to push and convey materials. All parts in contact with the material are made of 316L stainless steel, and the machine base is made of 304 stainless steel. For special requirements, such as materials with high hardness or stringent iron impurity requirements, and applications requiring continuous operation under pipeline pressure, the grinding head can be optionally coated with carbides or ceramics. The improved GMSD2000 colloid mill features a jacket design outside the chamber for circulating cooling or heating media.