High-purity ultra-fine crystalline silicon powder is made of high-quality natural quartz as raw material, through various processes such as sorting, crushing, impurity removal, ultra-fine grinding, precision grading, surface treatment, etc., to produce a
Feature：
High purity; High hardness and wear resistance; Good electrical insulation; Low coefficient of thermal expansion; The chemical properties are very stable: excellent acid and alkali resistance, corrosion resistance, and no reaction with any other substances except for hydrofluoric acid.
Application：
The application fields are very extensive: copper clad panels, ink coatings, adhesives, electronic packaging, composite materials, silicone rubber, cosmetics, special ceramics and other industries.
Technical Data：
| Item | Unit | Typical Value | |
| Particle size distribution | D50 | Available within D50=0.5-10µm | |
| Particle size distribution | May be adjusted on basis of typical distribution as needed, including multimodal distribution and narrow-range distribution. | ||
| Appearance | / | White powder | |
| Density | kg/m3 | 2.65×103 | |
| Mohs Hardness | / | 7 | |
| Dielectric Constant | / | 4.2（1MHz） | |
| Thermal Conductivity | W/K·m | 12.6 | |
| Coefficient of Linear Expansion | 1/K | 14×10-6 | |
| Ion impurity | ppm | Can be reduced below 5ppm | |
| Purity | SiO2content | % | ≧99.0 |
1.The above physical indicators and chemical compositions are based on the average value of sample analysis and testing.
2.Individualized products can be customized: Particle size distribution can be controlled, and different surface activation can be selected.
3.For any special requirements, please feel free to contact us, we will provide solutions for you wholeheartedly.
