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Fused silica powder
Fused silica powder
【基本說明】：General information: fused silica powder refers to the amorphous silicon dioxide powder material, which is firstly converted into amorphous quartz from natural quartz followed by such processes as electrofusion, sorting, grinding and classifying.
【應用范圍】：
>Basic characteristics of Fused silica powder：
| Item | Unit | Typical Value |
|---|---|---|
| Appearance | / | White powder |
| Density | kg/m3 | 2.20×103 |
| Mohs Hardness | / | 6.0 |
| Dielectric Constant | / | 3.88（1MHz） |
| Dielectric Loss | / | 0.0002（1MHz） |
| Coefficient of Linear Expansion | 1/K | 0.5×10-6 |
| Thermal Conductivity | W/K·m | 1.1 |
| Refraction Coefficient | / | 1.45 |
>Crystalline silica powder can be sorted on basis of following characteristics and prepared as required by customers:
| Item | Index of Correction | Introduction |
|---|---|---|
| Purity | SiO2content | Available within 99.0-99.9% |
| Ion impurity | Na+、Cl-,etc. | Can be reduced below 1ppm |
| Particle size distribution | D50 | Available within D50=0.5-50μm |
| Particle size distribution | May be adjusted on basis of typical distribution as needed, including multimodal distribution and narrow-range distribution. | |
| Appearance characteristics | Whiteness and transparency | Whiteness is within 60-98, high-transparency product is available. |
| Surface characteristics | Hydrophobicity and oil absorption | Treatment agent of different functions may be selected as needed by customer |
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