1. Definition & Process
Calcined Kaolin 2000 Mesh is a fine powder produced through superfine grinding and high-temperature calcination processes, representing an exceptional level of fineness (D97 approximately 10μm) and requiring stringent production controls.
2. Core Physical & Chemical Characteristics
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Fineness: 2000 Mesh (approximately 7.5μm), with ultra-fine and uniformly distributed particles.
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Whiteness: Extremely high, typically ≥93%.
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Oil Absorption: Low.
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Performance Features: Exhibits excellent dispersibility, hiding power, gloss contribution, and reinforcing effects.
| Chemical Composition (%) | Physical Indicators | ||
|---|---|---|---|
| component content | targeted value | project | targeted value |
| SiO₂ | 52±2 | whiteness | ≥93% |
| Al₂O₃ | 45±2 | 325 mesh | ≤0.01% |
| Fe₂O₃ | ≤0.6 | fine content (<2μm) | 76±2% |
| TiO₂ | ≤1.2 | PH | 7.0±1 |
| CaO | ≤0.5 | oil absorption(100g) | 55±5g |
| MgO | ≤0.2 | moisture content | ≤0.5% |
| K₂O | ≤0.1 | dispersity (Hegman) | ≤65μm |
| Na₂O | ≤0.2 | ||
3. Key Performance Advantages
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Superior Surface Properties: Imparts excellent surface smoothness, high gloss, and a fine tactile feel to products.
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Outstanding Optical Performance: High whiteness and scattering power provide superior hiding power and brightness.
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Significant Reinforcement: Offers excellent reinforcing properties in polymers, increasing strength and rigidity.
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High Fluidity: Helps improve the rheological properties of systems, facilitating processing.
4. Primary Application Fields
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High-Grade Coatings: Automotive paints, wood coatings, high-gloss industrial paints, etc.
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Premium Engineering Plastics: Appliance housings, automotive components, etc.
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Specialty Rubber Products: High-performance seals, light-colored or colored rubber goods.
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Specialty Coated Paper: High-gloss art paper, cast-coated paper, etc.
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Precision Ceramics: Electronic ceramic substrates, etc.
5. Usage Recommendations
To ensure the full performance potential of its ultra-fine particles, the use of high-efficiency dispersion equipment (e.g., high-speed dispersers, sand mills) coupled with appropriate wetting and dispersing agents is recommended.
