Ultrafine Grinding and Dispersion Processes in Nanotechnology Applications
In the rapidly evolving field of nanotechnology, the ability to manipulate materials at the nanoscale has revolutionized multiple industries, from pharmaceuticals to electronics. Central to these advancements are ultrafine grinding and dispersion processes, which enable the production of nanoparticles with unique physical and chemical properties.
●Chemical Composition:
| Composition | ZrO2 | Y2O3 | Other |
| Content % | 94.8±0.2 | 5.1±0.1 | 0.1% |
●Physical Properties:
| Specific Gravity g/cm3 | Bulk Density kg/L | Hardness Hv | Fracture Toughness MPam1-2 | Crushing Load KN(Φ2.0mm) | Grain size um | Wear loss (%) | Sphericity (%) |
| ≥6.02 | ≥ 3.70 | ≥1250 | 9 |
≥20
| ≤0.5 | ≤0.08 | ≥98 |
● Ball Sizes :
| Size(mm) | Size(mm) | Size(mm) | Size(mm) | Size(mm) |
| Φ0.08-0.12 | Φ0.12-0.18 | Φ0.18-0.22 | Φ0.22-0.28 | Φ0.28-0.35 |
| Φ0.3-0.4 | Φ0.4-0.6 | Φ0.6-0.8 | Φ0.8-1.0 | Φ1.0-1.2 |
| Φ1.2-1.4 | Φ1.4-1.6 | Φ1.6-1.8 | Φ1.8-2.0 | 2.0-2.2 |
| Φ2.2-2.4 | Φ2.4-2.6 | Φ2.6-2.8 | Φ2.8-3.0 | Φ3.0-3.2 |
| Φ3.2-3.5 | Φ4 | Φ5 | Φ6 | Φ7 |
| Φ8 | Φ10 | Φ12 | Φ15 | Φ17 |
| Φ20 | Φ25 | Φ30 | Φ40 | Φ50 |
●Features:
u High density, high grinding efficiency, high hardness;
u Compact Tetragonal Zirconia Polycrystalline (Y-TZP) to give the beads outstanding anti-corrosion and wear resistance;
u Always keep the smooth surface and the good roundness;
u Homogenous structure at high hardness;
u 15% superior to Ceria Stabilized beads in wear rate, proved by many tests.
What is Ultrafine Grinding?
Ultrafine grinding refers to the process of reducing material sizes to the nanoscale, typically ranging from 1 to 100 nanometers. This size reduction is crucial for enhancing the material's properties, such as increased surface area, improved solubility, and heightened chemical reactivity. These attributes are pivotal in applications across various sectors, including medicine, electronics, and materials science.
The Importance of Nanoparticles
Nanoparticles exhibit unique properties due to their size-induced functionalities. For instance, they are more break-resistant and possess a larger surface area relative to their volume, which is advantageous in applications like drug delivery and material reinforcement.
Top-Down vs. Bottom-Up Approaches
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Top-Down Approach: This method involves breaking down larger particles into nanoparticles. It is commonly achieved through mechanical means, such as ultrafine grinding using laboratory ball mills. The process involves several steps, including preliminary grinding, colloidal grinding, and consistency checks. The choice of grinding tools, ball size, and dispersant ratios are crucial factors influencing the outcome.
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Bottom-Up Approach: In contrast, this method synthesizes nanoparticles from atoms or molecules. It is often used in chemical and biological applications where precise control over particle size and composition is required.
The Role of Ball Mills
Ball mills are instrumental in the ultrafine grinding process. They provide the necessary energy input to achieve nanoscale particles. These mills utilize a combination of impact, friction, and circulating grinding jar movement to produce ultrafine particles rapidly.
Key Factors in Ball Milling
- Material of Grinding Tools: The choice of materials like zirconium oxide for grinding jars and balls ensures minimal contamination and abrasion resistance.
- Grinding Ball Size: The size of the grinding balls significantly affects the final particle size. Smaller balls are used for finer grinding.
- Energy Input and Grinding Time: High energy input and appropriate grinding time are essential for achieving desired fineness.
Industry-Specific Applications
- Pharmaceuticals: Ultrafine grinding facilitates the controlled release of drugs, enhancing their efficacy and bioavailability.
- Electronics: Nanoparticles improve the performance of semiconductors and other electronic components.
- Food Industry: Ultrafine grinding is used to produce functional foods with enhanced nutritional properties.
●Package:
25KG/Plastic Drum, 800-1000KG/Pallet with shrink wrapped
●Storage:
The grinding media should be stored in a dry and clean place.
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Test Equipment:
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